subject:(porous electrode)

Queens University

1. Blore, Drew. Examination of the Pore Space of a Solid Oxide Fuel Cell Electrode: A Computational Approach .

Degree: Mechanical and Materials Engineering, 2011, Queens University

URL: http://hdl.handle.net/1974/6556

► A numerical model of a solid oxide fuel cell electrode is presented. Using an already established algorithm for dropping spheres as a base, alterations are… (more)

▼ A numerical model of a solid oxide fuel cell electrode is presented. Using an already established algorithm for dropping spheres as a base, alterations are made to the algorithm to increase the realism of the model. Two changes are analyzed in detail: the ability to drop pore former particles, and the use of pre-agglomerated solid particles. These changes are characterized by their impact on mean pore size, tortuosity, and effective diffusivity. As pore former volume fraction is increased, so too are mean pore size and tortuosity. A higher mean pore size has a beneficial effect on effective diffusivity due to Knudsen effects, while a higher tortuosity has a detrimental effect on effective diffusivity. The impact of mean pore size and tortuosity on diffusivity generally balances and if the impact of porosity is ignored, pore former volume fraction does not greatly affect effective diffusivity. As pore former particle size is increased, mean pore size and tortuosity also increase. Similarly to before, the effects of mean pore size and tortuosity balance. However, effective diffusivity is shown to decrease slightly with an increasing pore former particle size, suggesting a change in tortuosity has greater impact on diffusivity than a change in mean pore size. For a domain constructed with pre-agglomerated particles, the tortuosity and mean pore size were both noticeably larger than when no pre-agglomerated particles are used. Effective diffusivity was only slightly higher for a domain constructed with pre-agglomerated particles than with no pre-agglomerated particles. It is also shown that the relationship of effective diffusivity with porosity for a domain constructed with pre-agglomerated particles does not fit the correlation proposed by Berson et al. [1] for low porosity structures. A secondary goal of this work is to examine pore size measurement techniques, and present a novel technique that allows the determination of a local pore size, and therefore, a local Knudsen number. Results from the local pore size technique do not match those of the random walk method and so although the novel technique may prove to be a good starting point, it is deemed not yet suitable for use.

Subjects/Keywords: solid oxide fuel cell ; porous electrode

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APA (6^th Edition):

Blore, D. (2011). Examination of the Pore Space of a Solid Oxide Fuel Cell Electrode: A Computational Approach . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/6556

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Blore, Drew. “Examination of the Pore Space of a Solid Oxide Fuel Cell Electrode: A Computational Approach .” 2011. Thesis, Queens University. Accessed March 01, 2021. http://hdl.handle.net/1974/6556.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Blore, Drew. “Examination of the Pore Space of a Solid Oxide Fuel Cell Electrode: A Computational Approach .” 2011. Web. 01 Mar 2021.

Vancouver:

Blore D. Examination of the Pore Space of a Solid Oxide Fuel Cell Electrode: A Computational Approach . [Internet] [Thesis]. Queens University; 2011. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1974/6556.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Blore D. Examination of the Pore Space of a Solid Oxide Fuel Cell Electrode: A Computational Approach . [Thesis]. Queens University; 2011. Available from: http://hdl.handle.net/1974/6556

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Minnesota

2. Fierke, Melissa Ann. The utilization of templated porous electrodes in electrochemical applications.

Degree: PhD, 2013, University of Minnesota

URL: http://purl.umn.edu/159709

► The unifying theme within this work is three-dimensionally ordered macroporous (3DOM) carbon. This material consists of an ordered array of pores surrounded by a skeleton… (more)

▼ The unifying theme within this work is three-dimensionally ordered macroporous (3DOM) carbon. This material consists of an ordered array of pores surrounded by a skeleton of amorphous carbon with nanometer-scale dimensions. 3DOM carbon offers several advantages that make it ideal for use in electrochemical applications. It has a high surface area, an interconnected pore structure, it is electrically conductive and chemically inert, the surface chemistry can be modified and characterized using slight modifications of well-established techniques, and robust monoliths can be produced. Here, 3DOM carbon was utilized in three distinct electrochemical applications. A three-dimensional interpenetrating lithium ion battery with a 3DOM carbon anode and a mixed vanadia/ruthenia cathode was investigated. Optimization of the synthesis of the polymeric separator layer and the ruthenia component of the cathode were carried out. The synthesis conditions and post-synthesis treatment greatly affect the degree of ruthenia deposition within the porous structure and the extent of hydration of the product. An ion-selective electrode system with 3DOM carbon as the solid contact was developed. 3DOM carbon was covered with an ionophore-based sensing membrane, allowing for selective detection of K⁺ or Ag⁺. This system exhibited very low detection limits (4.3 ppt for Ag⁺), unprecedented electrode stability, and little-to-no response to common interferents (such as carbon dioxide and light). The reasons for this excellent performance were investigated using a variety of characterization methods (with an emphasis on electrochemical techniques). The high surface area and low concentration of surface functional groups on 3DOM carbon are important factors. A receptor-based sensor for explosives detection was also developed. The pore walls of 3DOM carbon were modified with a receptor for 2,4-dinitrotoluene (DNT) using a series of chemical and electrochemical modification steps. Only 3DOM carbon that had been modified with the receptor exhibited a response to the presence of DNT. This selective detection of DNT was also possible in the presence of interfering molecules. However, the high capacitance of the 3DOM carbon led to poor limits when using cyclic voltammetry as the detection method. When square wave voltammetry was used, which eliminates the capacitive currents, much improved detection limits (10 μM) were achieved.

Subjects/Keywords: Battery; Carbon; Electrode; Porous; Sensor; Templated

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APA (6^th Edition):

Fierke, M. A. (2013). The utilization of templated porous electrodes in electrochemical applications. (Doctoral Dissertation). University of Minnesota. Retrieved from http://purl.umn.edu/159709

Chicago Manual of Style (16^th Edition):

Fierke, Melissa Ann. “The utilization of templated porous electrodes in electrochemical applications.” 2013. Doctoral Dissertation, University of Minnesota. Accessed March 01, 2021. http://purl.umn.edu/159709.

MLA Handbook (7^th Edition):

Fierke, Melissa Ann. “The utilization of templated porous electrodes in electrochemical applications.” 2013. Web. 01 Mar 2021.

Vancouver:

Fierke MA. The utilization of templated porous electrodes in electrochemical applications. [Internet] [Doctoral dissertation]. University of Minnesota; 2013. [cited 2021 Mar 01]. Available from: http://purl.umn.edu/159709.

Council of Science Editors:

Fierke MA. The utilization of templated porous electrodes in electrochemical applications. [Doctoral Dissertation]. University of Minnesota; 2013. Available from: http://purl.umn.edu/159709

Vanderbilt University

3. Self, Ethan Craig. Electrospun Particle/Polymer Fiber Mat Electrodes for Li-ion Batteries.

Degree: PhD, Chemical Engineering, 2017, Vanderbilt University

URL: http://hdl.handle.net/1803/15340

► Since their commercial debut in 1991, Li-ion batteries (LIBs) have revolutionized the functionality of portable electronic devices, and the LIB industry continues to grow today… (more)

▼ Since their commercial debut in 1991, Li-ion batteries (LIBs) have revolutionized the functionality of portable electronic devices, and the LIB industry continues to grow today due emerging applications such as electric vehicle propulsion. Despite the extraordinary success of LIBs, many devices are still limited by battery performance, and thus new batteries with higher energy density, faster rechargeability, and longer cycle life must be developed to satisfy the ever-increasing demands of consumers. This dissertation details the fabrication and characterization of electrospun particle/polymer fiber mats as LIB electrodes, including: (i) anodes containing titania nanoparticles, carbon powder, and poly(acrylic acid) (TiO2/C/PAA), (ii) anodes containing carbon powder and poly(vinylidene fluoride) (C/PVDF), (iii) anodes containing Si nanoparticles, carbon powder, and PAA (Si/C/PAA), and (iv) cathodes containing LiCoO2 nanoparticles, carbon powder, and PVDF (LiCoO2/C/PVDF). The composition, thickness, fiber volume fraction, and fiber interconnectivity of electrospun mats can be easily controlled to achieve high capacities at fast charge/discharge rates. An electrospun TiO2/C/PAA anode with a thickness of 600 µm had an areal capacity of 0.97 mAh cm-2 at 2C which is much greater than that of a slurry cast anode of the same composition and loading (0.53 mAh cm-2). Likewise, a C/PVDF anode with a fiber volume fraction of 0.85 had a high volumetric capacity of 55 mAh cm-3 at 2C compared to only 27 mAh cm-3 for a conventional slurry cast graphite anode. Si/C/PAA fiber mat anodes had extremely high gravimetric, areal, and volumetric capacities of 1,484 mAh g-1, 4.5 mAh cm-2, and 750 mAh cm-3, respectively. C/LiCoO2 and Si/LiCoO2 full cells prepared with an electrospun anode and electrospun cathode had high specific energy densities of 150 and 270 Wh kg-1, respectively, which are among the highest values reported in the literature to date. The excellent performance of electrospun particle/polymer fiber mat electrodes is attributed to their: (i) large electrode/electrolyte interfacial areas, (ii) short Li+ transport pathways, and (iii) good electrolyte infiltration throughout the intra- and interfiber void space of the mats. These results demonstrate that the intelligent organization of electroactive powders into fiber mat electrodes can enhance Li+ transport rates and improve LIB performance. Advisors/Committee Members: Bridget R. Rogers (committee member), Cary L. Pint (committee member), Paul E. Laibinis (committee member), Peter N. Pintauro (Committee Chair).

Subjects/Keywords: Porous Electrode; Volumetric Capacity; Areal Capacity; Nanofibers; Electrospinning; Li-ion Batteries

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APA (6^th Edition):

Self, E. C. (2017). Electrospun Particle/Polymer Fiber Mat Electrodes for Li-ion Batteries. (Doctoral Dissertation). Vanderbilt University. Retrieved from http://hdl.handle.net/1803/15340

Chicago Manual of Style (16^th Edition):

Self, Ethan Craig. “Electrospun Particle/Polymer Fiber Mat Electrodes for Li-ion Batteries.” 2017. Doctoral Dissertation, Vanderbilt University. Accessed March 01, 2021. http://hdl.handle.net/1803/15340.

MLA Handbook (7^th Edition):

Self, Ethan Craig. “Electrospun Particle/Polymer Fiber Mat Electrodes for Li-ion Batteries.” 2017. Web. 01 Mar 2021.

Vancouver:

Self EC. Electrospun Particle/Polymer Fiber Mat Electrodes for Li-ion Batteries. [Internet] [Doctoral dissertation]. Vanderbilt University; 2017. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1803/15340.

Council of Science Editors:

Self EC. Electrospun Particle/Polymer Fiber Mat Electrodes for Li-ion Batteries. [Doctoral Dissertation]. Vanderbilt University; 2017. Available from: http://hdl.handle.net/1803/15340

Texas A&M University

4. Cho, Seongkoo. Analysis of Impedance Response in Lithium-ion Battery Electrodes.

Degree: MS, Mechanical Engineering, 2013, Texas A&M University

URL: http://hdl.handle.net/1969.1/151935

► A major amount of degradation in battery life is in the form of chemical degradation due to the formation of Solid Electrolyte Interface (SEI) which… (more)

▼ A major amount of degradation in battery life is in the form of chemical degradation due to the formation of Solid Electrolyte Interface (SEI) which is a passive film resulting from chemical reaction. Mechanical degradation in the form of fracture formation due to diffusion induced stress can aggravate the aging of the electrode. These mechanisms of deterioration are primary contributors on limiting the durability of Lithium-ion battery (LIB). In addition, an composition of insertion materials such as active material, additive, and binder as well as active particle’s morphological heterogeneity can influence solid-state transport, electronic conductivity and hence, battery performance. In this study, virtual 3-D microstructures of LIB electrodes with intercalation particles are designed to describe the influence of microstructure on effective electrical conductivity and the electrochemical impedance. The technique of digital stochastic modeling has been employed for the generation of electrode microstructures consisting of active material, binder, conductive additive and electrolyte. Physicochemical properties for each of the constituent phases have been duly accounted for. Mathematical models have been developed to characterize the electrochemical impedance of LIB electrode. In this work, we demonstrate the coupling of electrode microstructures to the solid state diffusion impedance response in LIB electrodes. This model considers not only the effect of heterogeneity in active particle size on the diffusion impedance response, but also the effect of electrical conductivity, interfacial surface area of the active materials, and volume fraction of the active materials in the porous electrode on the impedance response. In addition, the impact of the morphology of the active materials on the diffusion impedance response through utilization of the characteristic diffusion length of active particles and a Sauter mean particle size has been demonstrated. In order to show the effect of chemical degradation on the impedance response with focus on aging, the Li-ion diffusion inside an active particle is considered along with SEI. Finally, mechanical degradation induced increase in impedance is analyzed by coupling diffusion induced fracture with impedance. These approaches are envisioned to offer a virtual impedance response probing framework to elucidate the influence of electrode microstructural variability and underlying electrochemical and transport interactions. Advisors/Committee Members: Mukherjee, Partha P. (advisor), Zhang, Xinghang (committee member), Park, Philip (committee member).

Subjects/Keywords: Electrochemical Impedance; Porous Electrode; Solid Electrolyte Interphase; SEI; Fracture

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APA (6^th Edition):

Cho, S. (2013). Analysis of Impedance Response in Lithium-ion Battery Electrodes. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/151935

Chicago Manual of Style (16^th Edition):

Cho, Seongkoo. “Analysis of Impedance Response in Lithium-ion Battery Electrodes.” 2013. Masters Thesis, Texas A&M University. Accessed March 01, 2021. http://hdl.handle.net/1969.1/151935.

MLA Handbook (7^th Edition):

Cho, Seongkoo. “Analysis of Impedance Response in Lithium-ion Battery Electrodes.” 2013. Web. 01 Mar 2021.

Vancouver:

Cho S. Analysis of Impedance Response in Lithium-ion Battery Electrodes. [Internet] [Masters thesis]. Texas A&M University; 2013. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1969.1/151935.

Council of Science Editors:

Cho S. Analysis of Impedance Response in Lithium-ion Battery Electrodes. [Masters Thesis]. Texas A&M University; 2013. Available from: http://hdl.handle.net/1969.1/151935

Georgia Tech

5. Ding, Xiaoyu. Applied study and modeling of penetration depth for slot die coating onto porous substrates.

Degree: PhD, Mechanical Engineering, 2014, Georgia Tech

URL: http://hdl.handle.net/1853/53425

► A distinctive field in the coatings industry is the coating of porous media, with broad applications in paper, apparel, textile, electronics, bioengineering, filtration and energy… (more)

▼ A distinctive field in the coatings industry is the coating of porous media, with broad applications in paper, apparel, textile, electronics, bioengineering, filtration and energy sector. A primary industrial scale process that can be used to coat porous media in a fast and flexible manner is slot die extrusion. A major concern when coating porous media with a wetting fluid is fluid penetration into the substrate. Although some level of penetration is desirable to obtain specific material properties, inadequate or excessive fluid penetration can negatively affect the strength, functionality or performance of the resulting material. In spite of its apparent industrial importance, limited modeling and experimental work has been conducted to study fluid penetration into porous media during fabrication. The effects of processing parameters on the penetration depth, the effects of penetration on material quality, and the method to predict and control the penetration depth are not well understood. This dissertation is composed of two parts. Part I is an applied study for coating onto porous media. This part focuses on the first objective of this dissertation which is to elucidate clearly the feasibility, advantages and disadvantages of the direct coating method as a potential fabrication route for membrane electrode assembly (MEA). MEA samples are fabricated using both traditional and the direct coating methods. Then, the quality and performance of the MEA samples are examined. Experimental results in Part I demonstrate that it is feasible to fabricate MEAs using the direct coating method. However, Nafion® solution penetrates into the catalyst layer during the coating process and causes lower performance of fuel cells, which is the motivation for Part II of this thesis. The objective of Part II is to fundamentally understand the fluid penetration process and predict the penetration depth when directly coating porous media, using a comprehensive approach. A series of computational and analytical models are developed to predict the penetration depth for both Newtonian and non-Newtonian fluids with or without capillary pressure. Finally the accuracy of developed models are validated through experiments. The relative error between the predicted and experimentally measured penetration depth is generally lower than 20%. Advisors/Committee Members: Fuller, Thomas F. (advisor), Harris, Tequila A. L. (advisor), Breedveld, Victor (committee member), Wang, Yan (committee member), Smith, Marc K. (committee member).

Subjects/Keywords: Slot die coating; Porous media; Fuel cell; Membrane electrode assembly; Penetration

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APA (6^th Edition):

Ding, X. (2014). Applied study and modeling of penetration depth for slot die coating onto porous substrates. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/53425

Chicago Manual of Style (16^th Edition):

Ding, Xiaoyu. “Applied study and modeling of penetration depth for slot die coating onto porous substrates.” 2014. Doctoral Dissertation, Georgia Tech. Accessed March 01, 2021. http://hdl.handle.net/1853/53425.

MLA Handbook (7^th Edition):

Ding, Xiaoyu. “Applied study and modeling of penetration depth for slot die coating onto porous substrates.” 2014. Web. 01 Mar 2021.

Vancouver:

Ding X. Applied study and modeling of penetration depth for slot die coating onto porous substrates. [Internet] [Doctoral dissertation]. Georgia Tech; 2014. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1853/53425.

Council of Science Editors:

Ding X. Applied study and modeling of penetration depth for slot die coating onto porous substrates. [Doctoral Dissertation]. Georgia Tech; 2014. Available from: http://hdl.handle.net/1853/53425

Indian Institute of Science

6. Penki, Tirupathi Rao. High Capacity Porous Electrode Materials of Li-ion Batteries.

Degree: PhD, Faculty of Science, 2017, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/2907

► Lithium-ion battery is attractive for various applications because of its high energy density. The performance of Li-ion battery is influenced by several properties of the… (more)

▼ Lithium-ion battery is attractive for various applications because of its high energy density. The performance of Li-ion battery is influenced by several properties of the electrode materials such as particle size, surface area, ionic and electronic conductivity, etc. Porosity is another important property of the electrode material, which influences the performance. Pores can allow the electrolyte to creep inside the particles and also facilitate volume expansion/contraction arising from intercalation/deintercalation of Li+ ions. Additionally, the rate capability and cycle-life can be enhanced. The following porous electrode materials are investigated. Poorly crystalline porous -MnO2 is synthesized by hydrothermal route from a neutral aqueous solution of KMnO4 at 180 °C and the reaction time of 24 h. On heating, there is a decrease in BET surface area and also a change in morphology from nanopetals to clusters of nanorods. As prepared MnO2 delivers a high discharge specific capacity of 275 mAh g-1 at a specific current of 40 mA g-1 (C/5 rate). Lithium rich manganese oxide (Li2MnO3) is prepared by reverse microemulsion method employing Pluronic acid (P123) as a soft template. It has a well crystalline structure with a broadly distributed mesoporosity but low surface area. However, the sample gains surface area with narrowly distributed mesoporosity and also electrochemical activity after treating in 4 M H2SO4. A discharge capacity of about 160 mAh g-1 is obtained at a discharge current of 30 mA g-1. When the acid-treated sample is heated at 300 °C, the resulting porous sample with a large surface area and dual porosity provides a discharge capacity of 240 mAh g-1 at a discharge current density of 30 mA g-1. Solid solutions of Li2MnO3 and LiMO2 (M=Mn, Ni, Co, Fe and their composites) are more attractive positive electrode materials because of its high capacity >200 mAh g-1.The solid solutions are prepared by microemulsion and polymer template route, which results in porous products. All the solid solution samples exhibit high discharge capacities with high rate capability. Porous flower-like α-Fe2O3 nanostructures is synthesized by ethylene glycol mediated iron alkoxide as an intermediate and heated at different temperatures from 300 to 700 °C. The α-Fe2O3 samples possess porosity with high surface area and deliver discharge capacity values of 1063, 1168, 1183, 1152 and 968 mAh g-1 at a specific current of 50 mA g-1 when prepared at 300, 400, 500, 600 and 700 °C, respectively. Partially exfoliated and reduced graphene oxide (PE-RGO) is prepared by thermal exfoliation of graphite oxide (GO) under normal air atmosphere at 200-500 °C. Discharge capacity values of 771, 832, 1074 and 823 mAh g -1 are obtained with current density of 30 mA g-1 at 1st cycle for PE-RGO samples prepared at 200, 300, 400 and 500 °C, respectively. The electrochemical performance improves on increasing of exfoliation temperature, which is attributed to an increase in surface area. The high rate capability is attributed to porous nature of the… Advisors/Committee Members: Munichandraiah, N (advisor).

Subjects/Keywords: Porous Electrode Materials; Rechargable Batteries; Li-ion Batteries; Electrochemical Energy Storage; Electrochemical Power Sources; Electrode Materials; Lithium-ion Batteries; Porous MnO2; Porous Li2MnO3; Porous Li1.2Mn0.53Ni0.13Co0.13O2 Composite; Dual Porosity Li1.2Mn0.6Ni0.2O2 Composite; Porous α-Fe2O3; Graphite Oxide (GO); Reduced Graphite Oxide (RGO); Li-ion Cells; Graphene; Electrochemistry

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Penki, T. R. (2017). High Capacity Porous Electrode Materials of Li-ion Batteries. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/2907

Chicago Manual of Style (16^th Edition):

Penki, Tirupathi Rao. “High Capacity Porous Electrode Materials of Li-ion Batteries.” 2017. Doctoral Dissertation, Indian Institute of Science. Accessed March 01, 2021. http://etd.iisc.ac.in/handle/2005/2907.

MLA Handbook (7^th Edition):

Penki, Tirupathi Rao. “High Capacity Porous Electrode Materials of Li-ion Batteries.” 2017. Web. 01 Mar 2021.

Vancouver:

Penki TR. High Capacity Porous Electrode Materials of Li-ion Batteries. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2017. [cited 2021 Mar 01]. Available from: http://etd.iisc.ac.in/handle/2005/2907.

Council of Science Editors:

Penki TR. High Capacity Porous Electrode Materials of Li-ion Batteries. [Doctoral Dissertation]. Indian Institute of Science; 2017. Available from: http://etd.iisc.ac.in/handle/2005/2907

Delft University of Technology

7. Kapel, Pieter (author). Manufacturing of a polymeric membrane with integrated porous electrode.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:1296cd8f-8d0e-44c1-abbf-79d7f6b158b1

►

A manufacturing technology is proposed to manufacture polymeric membrane scaffolds for culturing of cells, tissues, and organoids with integrated sensor capabilities and fluidic functionalities. A… (more)

Subjects/Keywords: Organ-on-chip; Porous membrane; Micro manufacturing; two-photon polymerization; conductive polymer; Nano imprint lithography; Electrode integration; Characterization

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APA (6^th Edition):

Kapel, P. (. (2018). Manufacturing of a polymeric membrane with integrated porous electrode. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:1296cd8f-8d0e-44c1-abbf-79d7f6b158b1

Chicago Manual of Style (16^th Edition):

Kapel, Pieter (author). “Manufacturing of a polymeric membrane with integrated porous electrode.” 2018. Masters Thesis, Delft University of Technology. Accessed March 01, 2021. http://resolver.tudelft.nl/uuid:1296cd8f-8d0e-44c1-abbf-79d7f6b158b1.

MLA Handbook (7^th Edition):

Kapel, Pieter (author). “Manufacturing of a polymeric membrane with integrated porous electrode.” 2018. Web. 01 Mar 2021.

Vancouver:

Kapel P(. Manufacturing of a polymeric membrane with integrated porous electrode. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Mar 01]. Available from: http://resolver.tudelft.nl/uuid:1296cd8f-8d0e-44c1-abbf-79d7f6b158b1.

Council of Science Editors:

Kapel P(. Manufacturing of a polymeric membrane with integrated porous electrode. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:1296cd8f-8d0e-44c1-abbf-79d7f6b158b1

University of Minnesota

8. Koop, Brendan Early. Creation and In Vivo evaluation of a porous electrode for pacing in a coronary vein: an assessment of the potential for improved electrical performance and chronic stability of coronary venous pacing leads.

Degree: PhD, Mechanical Engineering, 2009, University of Minnesota

URL: http://purl.umn.edu/52230

► In this work, a porous electrode was fabricated and evaluated in a chronic animal study on a coronary venous pacing lead in order to assess… (more)

▼ In this work, a porous electrode was fabricated and evaluated in a chronic animal study on a coronary venous pacing lead in order to assess its potential for mitigating chronic lead dislodgements and reducing the characteristic rise in pacing thresholds after implant, both of which being important issues that impact safety and efficacy of implanted cardiac resynchronization therapy systems. Eight test leads were assembled with a porous tip electrode with an average pore size of approximately 30 micrometers, created via a novel fabrication method, and eight control leads were assembled with a standard solid tip electrode design. Both groups were created without steroid-eluting collars and without a capacitive coating on the tip electrodes in order to isolate the affects of electrode porosity. Leads were implanted in canines, and electrical data and x-rays of lead position were taken regularly throughout the 60-day study. Tissue histology was performed for each lead. Significantly lower (p<0.05) mean rise in pacing threshold after implant was observed at day 3 and day 21 for the test group leads (with porous electrodes) as compared to the control group leads. Despite the higher surface area of the porous tip electrodes, pacing impedance was not statistically different between the groups throughout the study, a result likely due to decreased chronic inflammatory response at the surface of porous electrodes. The test group had no lead retractions after day 3 as determined by inspection of x-ray radiographs, while 3-6 (of 8) control group leads retracted after day 3, a result likely due to anchoring of the lead tip due to observed tissue growth into porous electrodes. Mean fibrous capsule thickness at pre-defined measurement points on the tip electrode was not statistically different between the groups, which correlates with the nearly equal mean pacing thresholds for the groups at day 60. The lack of lead retractions for the test groups leads after day 3 is a promising result which should be investigated further, along with investigations of lead extraction force and further electrical data evaluations, using larger sample sizes and more challenging implant conditions.

Subjects/Keywords: Coronary Venous; Electrode; Lead; Pacing; Porous; Mechanical Engineering

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APA (6^th Edition):

Koop, B. E. (2009). Creation and In Vivo evaluation of a porous electrode for pacing in a coronary vein: an assessment of the potential for improved electrical performance and chronic stability of coronary venous pacing leads. (Doctoral Dissertation). University of Minnesota. Retrieved from http://purl.umn.edu/52230

Chicago Manual of Style (16^th Edition):

Koop, Brendan Early. “Creation and In Vivo evaluation of a porous electrode for pacing in a coronary vein: an assessment of the potential for improved electrical performance and chronic stability of coronary venous pacing leads.” 2009. Doctoral Dissertation, University of Minnesota. Accessed March 01, 2021. http://purl.umn.edu/52230.

MLA Handbook (7^th Edition):

Koop, Brendan Early. “Creation and In Vivo evaluation of a porous electrode for pacing in a coronary vein: an assessment of the potential for improved electrical performance and chronic stability of coronary venous pacing leads.” 2009. Web. 01 Mar 2021.

Vancouver:

Koop BE. Creation and In Vivo evaluation of a porous electrode for pacing in a coronary vein: an assessment of the potential for improved electrical performance and chronic stability of coronary venous pacing leads. [Internet] [Doctoral dissertation]. University of Minnesota; 2009. [cited 2021 Mar 01]. Available from: http://purl.umn.edu/52230.

Council of Science Editors:

Koop BE. Creation and In Vivo evaluation of a porous electrode for pacing in a coronary vein: an assessment of the potential for improved electrical performance and chronic stability of coronary venous pacing leads. [Doctoral Dissertation]. University of Minnesota; 2009. Available from: http://purl.umn.edu/52230

Virginia Tech

9. Atcitty, Stanley. Electrochemical Capacitor Characterization for Electric Utility Applications.

Degree: PhD, Electrical and Computer Engineering, 2006, Virginia Tech

URL: http://hdl.handle.net/10919/29613

► Electrochemical capacitors (ECs) have received a significant level of interest for use in the electric utility industry for a variety of potential applications. For example,… (more)

▼ Electrochemical capacitors (ECs) have received a significant level of interest for use in the electric utility industry for a variety of potential applications. For example, ECs integrated with a power conversion system can be used to assist the electric utility by providing voltage support, power factor correction, active filtering, and reactive and active power support. A number of electric utility applications have been proposed but, to date, ECs have not been very well characterized for use in these applications. Consequently, there is a need to gain a better understanding of ECs when used in electric utility applications. ECs are attractive for utility applications because they have higher energy density than conventional capacitors and higher power density than batteries. ECs also have higher cycle life than batteries, which results in longer life spans. To better understand the system dynamics when ECs are used for utility applications requires suitable models that can be incorporated into the variety of software programs currently used to create dynamic simulations for the applications, programs such as PSPICEâ ¢, MATLAB Simulinkâ ¢, and PSCADâ ¢. To obtain a relevant simulation with predictive capability, the behavior of the EC on which the model is based must be well defined; this necessitates a thorough understanding of the electrical characteristics of these devices. This paper and the associated research focus on the use of the electrochemical impedance spectroscopy (EIS) to develop nonlinear equivalent circuit models to better understand and characterize symmetric ECs (SECs) for electric utility applications. It also focuses on the development of analytical solutions to better understand SEC efficiency and energy utilization. Representative static synchronous compensator (StatCom) systems, with and with out SECs, were simulated and discussed. The temperature effects on device ionic resistance and capacitance are covered as is the effect of temperature on maximum power transfer to a resistive load. Experimental data showed that the SEC's double-layer capacitance and ionic resistance are voltage dependent. Therefore a voltage-dependent RC network model was developed and validated and the results showed that this type of model mimicked the experimental SEC better than traditional electrical models. Analytical solutions were developed for the efficiency and energy utilization of an SEC. The analytical solutions are a function of operating voltages, constant current, and ionic resistance. The operating voltage method is an important factor in system design because the power conversion interface is typically limited by a voltage window and thus can determine the performance of SECs during charge and discharge. If the operating voltage window is not properly selected the current rating of the system can be reduced thus limiting the SECs performance. Advisors/Committee Members: Liu, Yilu (committeechair), Centeno, Virgilio A. (committee member), Wang, Fei Fred (committee member), Lin, Tao (committee member), Conners, Richard W. (committee member).

Subjects/Keywords: supercaps; ultracaps; electric utility; porous electrode; electrochemical capacitors

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APA (6^th Edition):

Atcitty, S. (2006). Electrochemical Capacitor Characterization for Electric Utility Applications. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/29613

Chicago Manual of Style (16^th Edition):

Atcitty, Stanley. “Electrochemical Capacitor Characterization for Electric Utility Applications.” 2006. Doctoral Dissertation, Virginia Tech. Accessed March 01, 2021. http://hdl.handle.net/10919/29613.

MLA Handbook (7^th Edition):

Atcitty, Stanley. “Electrochemical Capacitor Characterization for Electric Utility Applications.” 2006. Web. 01 Mar 2021.

Vancouver:

Atcitty S. Electrochemical Capacitor Characterization for Electric Utility Applications. [Internet] [Doctoral dissertation]. Virginia Tech; 2006. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10919/29613.

Council of Science Editors:

Atcitty S. Electrochemical Capacitor Characterization for Electric Utility Applications. [Doctoral Dissertation]. Virginia Tech; 2006. Available from: http://hdl.handle.net/10919/29613

North-West University

10. Dreyer, Herbert Morgan Evans. A comparison of catalyst application techniques for membrane electrode assemblies in SO2 depolarized electrolysers / Dreyer H.M.E.

Degree: 2011, North-West University

URL: http://hdl.handle.net/10394/7373

► Hydrogen production via the electrolysis of water has gained a lot of attention in the last couple of years. Research related to electrolysers is mostly… (more)

Subjects/Keywords: Carbon micro porous layer; Catalyst application techniques; Catalyst layer; Electrolyser electrode; Fuel cell electrode; Hand paint; Inkjet print; Membrane electrode assembly; Screen print; Spray paint; Sputtering; Water electrolysis; Brandstofsel-elektrode; Handverf; Inkjet-druk; Katalisator-aanwendingstegnieke; Katalisatorlaag; Membraanelektrode-samestelling; Poreuse koolstoflaag; Spuitverf; Waterelektrolise; Waterelektroliseerder-elektrode

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APA (6^th Edition):

Dreyer, H. M. E. (2011). A comparison of catalyst application techniques for membrane electrode assemblies in SO2 depolarized electrolysers / Dreyer H.M.E. (Thesis). North-West University. Retrieved from http://hdl.handle.net/10394/7373

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dreyer, Herbert Morgan Evans. “A comparison of catalyst application techniques for membrane electrode assemblies in SO2 depolarized electrolysers / Dreyer H.M.E. ” 2011. Thesis, North-West University. Accessed March 01, 2021. http://hdl.handle.net/10394/7373.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dreyer, Herbert Morgan Evans. “A comparison of catalyst application techniques for membrane electrode assemblies in SO2 depolarized electrolysers / Dreyer H.M.E. ” 2011. Web. 01 Mar 2021.

Vancouver:

Dreyer HME. A comparison of catalyst application techniques for membrane electrode assemblies in SO2 depolarized electrolysers / Dreyer H.M.E. [Internet] [Thesis]. North-West University; 2011. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10394/7373.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dreyer HME. A comparison of catalyst application techniques for membrane electrode assemblies in SO2 depolarized electrolysers / Dreyer H.M.E. [Thesis]. North-West University; 2011. Available from: http://hdl.handle.net/10394/7373

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade Nova

11. Bruxelas, Maria Beatriz Queiroz de Andrada. Nickel - 3 Yttria Stabilized Zirconia - Graphite Electrical Energy Storage Device.

Degree: 2017, Universidade Nova

URL: https://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/37536

► A Nickel-3 Yttria Stabilized Zirconia-Graphite Electrical Energy Storage (EES) device was fabricated using porous 3% mol Yttria-Stabilized Zirconia (3YSZ) as the separator and potassium hydroxide… (more)

▼ A Nickel-3 Yttria Stabilized Zirconia-Graphite Electrical Energy Storage (EES) device was fabricated using porous 3% mol Yttria-Stabilized Zirconia (3YSZ) as the separator and potassium hydroxide (KOH) as the electrolyte. The porous separator was fabricated through uniaxial pressing of 3YSZ nanopowder mixed with solid particles of Poly-vinylidene fluoride (PVDF) with a ratio of 2:1.5, respectively, to obtain maximum open porosity (59%). The resulting pellet was sintered using 2 ºC/min heating ramp (from 25 ºC to 1100 ºC) with a two-hour platform at this same temperature. Chemical exfoliation of graphite powder into graphene was performed mixing graphite powder in 25% water and 75% acetone solution (particle concentration of 3 mg/ml), that undergone a four-hour ultrasonication bath. The liquid phase of this solution was then evaporated at room temperature (RT). In order to determine qualitatively the amount of graphene present in the exfoliated graphite powder obtained, peak intensity ratios of its Raman spectrum were determined (I2D/IG=0.90, ID/IG=0.85), revealing the presence of multilayer graphene. To fabricate the exfoliated graphite electrode, the powder was mixed with a binder consisting of PVDF dissolved in N,N-Dimethylfomammide (DMF) in a proportion of 1:10 w/v, respectively. A ratio of 1:5 exfoliated graphite to binder was used to attain a maximum conductivity of (1.17 ± 0.18) x 103 S/m, a concentration of majority carriers of -5.22 x 1017 cm-2 and a mobility of 1.98 cm2/V∙s, all for a percentage of active material of only 27.93%. The nickel electrode was obtained from a commercial source, being that both electrodes were deposited on opposing sides of the separator by drop casting, and left to dry at RT. The performance of the device was measured by Cyclic Voltammetry (CV), galvanostatic Constant Current Cyclic Charge Discharge (CCCD), Constant Current Discharge (CCD) and Electrochemical Impedance Spectroscopy (EIS), from which it was possible to design an Electrical Equivalent Circuit (EEC) based on the Randles Cell and to determine the Equivalent Series Resistance (ESR), 63.55 Ω ± 8.62 Ω. The analysis of the data allowed to attest the high non-linearity of the device, that demonstrated to have a high capacitance (0.99 Fg-1) and a calculated energy and power densities of 0.31 Wh∙kg-1 and 10.29 μWh cm-2. Advisors/Committee Members: Ferreira, Isabel.

Subjects/Keywords: Electrical Energy Storage; Supercapacitors; Porous 3% mol Yttria-Stabilized Zirconia (3YSZ); Chemical exfoliation of graphite; Nickel electrode; Domínio/Área Científica::Engenharia e Tecnologia::Engenharia dos Materiais

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APA (6^th Edition):

Bruxelas, M. B. Q. d. A. (2017). Nickel - 3 Yttria Stabilized Zirconia - Graphite Electrical Energy Storage Device. (Thesis). Universidade Nova. Retrieved from https://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/37536

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bruxelas, Maria Beatriz Queiroz de Andrada. “Nickel - 3 Yttria Stabilized Zirconia - Graphite Electrical Energy Storage Device.” 2017. Thesis, Universidade Nova. Accessed March 01, 2021. https://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/37536.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bruxelas, Maria Beatriz Queiroz de Andrada. “Nickel - 3 Yttria Stabilized Zirconia - Graphite Electrical Energy Storage Device.” 2017. Web. 01 Mar 2021.

Vancouver:

Bruxelas MBQdA. Nickel - 3 Yttria Stabilized Zirconia - Graphite Electrical Energy Storage Device. [Internet] [Thesis]. Universidade Nova; 2017. [cited 2021 Mar 01]. Available from: https://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/37536.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bruxelas MBQdA. Nickel - 3 Yttria Stabilized Zirconia - Graphite Electrical Energy Storage Device. [Thesis]. Universidade Nova; 2017. Available from: https://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/37536

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

12. Mainka, Julia. Impédance locale dans une pile à membrane H2/air (PEMFC) : études théoriques et expérimentales : Local impedance in H2/air Proton Exchange Membrane Fuel Cells (PEMFC) : theoretical and experimental investigations.

Degree: Docteur es, Mécanique et énergétique, 2011, Université Henri Poincaré – Nancy I

URL: http://www.theses.fr/2011NAN10042

►

Cette thèse apporte des éléments de compréhension de la boucle basse fréquence des spectres d'impédance de PEMFC H2/air. Différentes expressions de l'impédance de transport de… (more)

▼

Cette thèse apporte des éléments de compréhension de la boucle basse fréquence des spectres d'impédance de PEMFC H2/air. Différentes expressions de l'impédance de transport de l'oxygène alternatives à l'élément de Warburg sont proposées. Elles prennent en compte des phénomènes de transport dans les directions perpendiculaire et parallèle à l'électrode qui sont habituellement négligés: convection à travers la GDL et le long du canal d'air, résistance protonique de la couche catalytique et appauvrissement en oxygène entre l'entrée et la sortie de la cellule. Une attention particulière est portée sur les oscillations de concentration induites par le signal de mesure qui se propagent le long du canal d'air. Ces différentes expressions de l'impédance de transport de l'oxygène sont utilisées dans un circuit électrique équivalent destiné à simuler l'impédance de la cellule. Une comparaison entre résultats expérimentaux et théoriques permet d'identifier les paramètres du circuit électrique. A partir de ces paramètres, il est possible d'analyser les mécanismes physiques et électro-chimiques qui se produisent dans la pile, ainsi que de tirer certaines conclusions sur les phénomènes de transport de l'oxygène dans les milieux poreux de la cathode. Pour cela, nous avons utilité des cellules segmentées et instrumentées conçues et fabriquées au laboratoire

The aim of this Ph.D thesis is to contribute to a better understanding of the low frequency loop in impedance spectra of H2/air fed PEMFC and to bring information about the main origin(s) of the oxygen transport impedance through the porous media of the cathode via locally resolved EIS. Different expressions of the oxygen transport impedance alternative to the one-dimensional finite Warburg element are proposed. They account for phenomena occurring in the directions perpendicular and parallel to the electrode plane that are not considered usually: convection through the GDL and along the channel, finite proton conduction in the catalyst layer, and oxygen depletion between the cathode inlet and outlet. A special interest is brought to the oxygen concentration oscillations induced by the AC measuring signal that propagate along the gas channel and to their impact on the local impedance downstream. These expressions of the oxygen transport impedance are used in an equivalent electrical circuit modeling the impedance of the whole cell. Experimental results are obtained with instrumented and segmented cells designed and built in our group. Their confrontation with numerical results allows to identify parameters characterizing the physical and electrochemical processes in the MEA

Advisors/Committee Members: Lottin, Olivier (thesis director), Maranzana, Gaël (thesis director).

Subjects/Keywords: Pile à combustible; Pemfc; Spectroscopie d'impédance locale; Cellule instrumentée; Milieux poreux; Modélisation; Cathode; Fuel cells; Pemfc; Local electrochemical impedance spectroscopy; Segmented cell; Porous media; Modeling; Gas diffusion electrode

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mainka, J. (2011). Impédance locale dans une pile à membrane H2/air (PEMFC) : études théoriques et expérimentales : Local impedance in H2/air Proton Exchange Membrane Fuel Cells (PEMFC) : theoretical and experimental investigations. (Doctoral Dissertation). Université Henri Poincaré – Nancy I. Retrieved from http://www.theses.fr/2011NAN10042

Chicago Manual of Style (16^th Edition):

Mainka, Julia. “Impédance locale dans une pile à membrane H2/air (PEMFC) : études théoriques et expérimentales : Local impedance in H2/air Proton Exchange Membrane Fuel Cells (PEMFC) : theoretical and experimental investigations.” 2011. Doctoral Dissertation, Université Henri Poincaré – Nancy I. Accessed March 01, 2021. http://www.theses.fr/2011NAN10042.

MLA Handbook (7^th Edition):

Mainka, Julia. “Impédance locale dans une pile à membrane H2/air (PEMFC) : études théoriques et expérimentales : Local impedance in H2/air Proton Exchange Membrane Fuel Cells (PEMFC) : theoretical and experimental investigations.” 2011. Web. 01 Mar 2021.

Vancouver:

Mainka J. Impédance locale dans une pile à membrane H2/air (PEMFC) : études théoriques et expérimentales : Local impedance in H2/air Proton Exchange Membrane Fuel Cells (PEMFC) : theoretical and experimental investigations. [Internet] [Doctoral dissertation]. Université Henri Poincaré – Nancy I; 2011. [cited 2021 Mar 01]. Available from: http://www.theses.fr/2011NAN10042.

Council of Science Editors:

Mainka J. Impédance locale dans une pile à membrane H2/air (PEMFC) : études théoriques et expérimentales : Local impedance in H2/air Proton Exchange Membrane Fuel Cells (PEMFC) : theoretical and experimental investigations. [Doctoral Dissertation]. Université Henri Poincaré – Nancy I; 2011. Available from: http://www.theses.fr/2011NAN10042

University of Houston

13. Kaveevivitchai, Watchareeya 1986-. Redox Intercalation and Electrochemical Reactions of Metal-Organic Frameworks and a Mixed Transition Metal Oxide with Applications in Lithium and Magnesium Batteries.

Degree: PhD, Inorganic Chemistry, 2014, University of Houston

URL: http://hdl.handle.net/10657/4760

► This dissertation focuses on the redox properties of metal-organic frameworks and a microporous mixed transition metal oxide. The study is divided into two main areas:… (more)

▼ This dissertation focuses on the redox properties of metal-organic frameworks and a microporous mixed transition metal oxide. The study is divided into two main areas: an intercalation of a redox active molecular guest into host single crystals, and an intercalation of reactive alkali and alkaline earth metals, Li and Mg, by solid state electrochemical reactions into the microporous compounds with applications in lithium and magnesium rechargeable batteries. A metal-organic framework [VIV(O)(bdc)](H2bdc)0.71 (1) was synthesized. This solid was activated to remove the guest molecules, and an empty framework of [VIV(O)(bdc)] (2) was obtained. 2 was used as a host to undergo a vapor-phase redox intercalation of an electroactive organic guest, hydroquinone. In ambient atmosphere, [VIII(OH)(bdc)]•{(O-C6H4-O)(HO-C6H4-OH)}0.76•(H2O)0.48 (3) was formed, whereas under anhydrous conditions, the product was [VIII(O-C6H4-O)(bdc)] (4). Structural deformations as a function of temperature of 2 and 4 were also studied. [VIV(O)(bdc)] (2) was used in solid state electrochemical reaction with lithium. The Li cells with 2 as the cathode material were reversibly cycled with good rate capability and specific capacity. The cell performance and electrochemical profiles at various current conditions were discussed. Structural evolution associated with the electrochemical lithiation was characterized. A metal-organic framework, [NH2(CH3)2][FeIIIFeII(HCOO)6] (FeFOR), was used as cathode in secondary lithium batteries. The electrochemical profiles suggested that FeFOR reacted reversibly with Li. The mechanism involved in the electrochemical reaction was proposed to be intercalation-based and conversion-based with LiHCOO being the matrix involved. A microporous molybdenum-vanadium oxide with large open 1D channels, Mo2.5+yVO9+δ, was used as an intercalation positive electrode material in lithium batteries. The electrochemical profiles showed good specific capacity at high current densities. The cells were found to be reversible even without conducting additives. The structural changes taking place during Li-ion insertion were described, and the chemical deintercalation of lithium was also performed to demonstrate the reversibility. Mo2.5+yVO9+δ was found to reversibly undergo not only lithium insertion in Li-based batteries, but also magnesium intercalation. The compound was used as cathode material, and reversibly cycled with magnesium as the counter electrode with good specific capacity. The effect of varying current densities on the discharge profiles was included. Advisors/Committee Members: Jacobson, Allan J. (advisor), Guloy, Arnold M. (committee member), Halasyamani, P. Shiv (committee member), Lee, T. Randall (committee member), Ardebili, Haleh (committee member).

Subjects/Keywords: Redox Intercalation; Electrochemical reactions; Metal-organic frameworks; Transition Metal Oxides; Lithium batteries; Batteries; Magnesium batteries; Electrode Materials; Lithium Intercalation; Magnesium intercalation; Mo-V oxide; Hydroquinone; Porous materials

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APA (6^th Edition):

Kaveevivitchai, W. 1. (2014). Redox Intercalation and Electrochemical Reactions of Metal-Organic Frameworks and a Mixed Transition Metal Oxide with Applications in Lithium and Magnesium Batteries. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/4760

Chicago Manual of Style (16^th Edition):

Kaveevivitchai, Watchareeya 1986-. “Redox Intercalation and Electrochemical Reactions of Metal-Organic Frameworks and a Mixed Transition Metal Oxide with Applications in Lithium and Magnesium Batteries.” 2014. Doctoral Dissertation, University of Houston. Accessed March 01, 2021. http://hdl.handle.net/10657/4760.

MLA Handbook (7^th Edition):

Kaveevivitchai, Watchareeya 1986-. “Redox Intercalation and Electrochemical Reactions of Metal-Organic Frameworks and a Mixed Transition Metal Oxide with Applications in Lithium and Magnesium Batteries.” 2014. Web. 01 Mar 2021.

Vancouver:

Kaveevivitchai W1. Redox Intercalation and Electrochemical Reactions of Metal-Organic Frameworks and a Mixed Transition Metal Oxide with Applications in Lithium and Magnesium Batteries. [Internet] [Doctoral dissertation]. University of Houston; 2014. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10657/4760.

Council of Science Editors:

Kaveevivitchai W1. Redox Intercalation and Electrochemical Reactions of Metal-Organic Frameworks and a Mixed Transition Metal Oxide with Applications in Lithium and Magnesium Batteries. [Doctoral Dissertation]. University of Houston; 2014. Available from: http://hdl.handle.net/10657/4760

14. Koyama, Akira. Acceleration of Electrochemical Reactions in Confined Nanospaces Caused by Surface-Induced Phase Transition : 表面誘起相転移の発現に基づく拘束空間での電気化学反応の高速化.

Degree: 博士(工学), 2017, Kyoto University / 京都大学

URL: http://hdl.handle.net/2433/225589 ; http://dx.doi.org/10.14989/doctor.k20364

新制・課程博士

甲第20364号

工博第4301号

Subjects/Keywords: surface-induced phase transition; liquid state in confined nanospace; porous electrode; electrodeposition; pH manipulation

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APA (6^th Edition):

Koyama, A. (2017). Acceleration of Electrochemical Reactions in Confined Nanospaces Caused by Surface-Induced Phase Transition : 表面誘起相転移の発現に基づく拘束空間での電気化学反応の高速化. (Thesis). Kyoto University / 京都大学. Retrieved from http://hdl.handle.net/2433/225589 ; http://dx.doi.org/10.14989/doctor.k20364

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Koyama, Akira. “Acceleration of Electrochemical Reactions in Confined Nanospaces Caused by Surface-Induced Phase Transition : 表面誘起相転移の発現に基づく拘束空間での電気化学反応の高速化.” 2017. Thesis, Kyoto University / 京都大学. Accessed March 01, 2021. http://hdl.handle.net/2433/225589 ; http://dx.doi.org/10.14989/doctor.k20364.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Koyama, Akira. “Acceleration of Electrochemical Reactions in Confined Nanospaces Caused by Surface-Induced Phase Transition : 表面誘起相転移の発現に基づく拘束空間での電気化学反応の高速化.” 2017. Web. 01 Mar 2021.

Vancouver:

Koyama A. Acceleration of Electrochemical Reactions in Confined Nanospaces Caused by Surface-Induced Phase Transition : 表面誘起相転移の発現に基づく拘束空間での電気化学反応の高速化. [Internet] [Thesis]. Kyoto University / 京都大学; 2017. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2433/225589 ; http://dx.doi.org/10.14989/doctor.k20364.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Koyama A. Acceleration of Electrochemical Reactions in Confined Nanospaces Caused by Surface-Induced Phase Transition : 表面誘起相転移の発現に基づく拘束空間での電気化学反応の高速化. [Thesis]. Kyoto University / 京都大学; 2017. Available from: http://hdl.handle.net/2433/225589 ; http://dx.doi.org/10.14989/doctor.k20364

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

15. Koyama, Akira. Acceleration of Electrochemical Reactions in Confined Nanospaces Caused by Surface-Induced Phase Transition .

Degree: 2017, Kyoto University

URL: http://hdl.handle.net/2433/225589

Subjects/Keywords: surface-induced phase transition; liquid state in confined nanospace; porous electrode; electrodeposition; pH manipulation

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Koyama, A. (2017). Acceleration of Electrochemical Reactions in Confined Nanospaces Caused by Surface-Induced Phase Transition . (Thesis). Kyoto University. Retrieved from http://hdl.handle.net/2433/225589

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Koyama, Akira. “Acceleration of Electrochemical Reactions in Confined Nanospaces Caused by Surface-Induced Phase Transition .” 2017. Thesis, Kyoto University. Accessed March 01, 2021. http://hdl.handle.net/2433/225589.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Koyama, Akira. “Acceleration of Electrochemical Reactions in Confined Nanospaces Caused by Surface-Induced Phase Transition .” 2017. Web. 01 Mar 2021.

Vancouver:

Koyama A. Acceleration of Electrochemical Reactions in Confined Nanospaces Caused by Surface-Induced Phase Transition . [Internet] [Thesis]. Kyoto University; 2017. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2433/225589.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Koyama A. Acceleration of Electrochemical Reactions in Confined Nanospaces Caused by Surface-Induced Phase Transition . [Thesis]. Kyoto University; 2017. Available from: http://hdl.handle.net/2433/225589

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

16. Rice, Lynn Margaret. Carbon-based Materials for Energy Storage.

Degree: Chemical Engineering, 2012, UCLA

URL: http://www.escholarship.org/uc/item/33q3w6hw

► Fossil fuels can be burned to provide on-demand energy at any time, but cleaner renewable energy sources such as the sun and wind are intermittent.… (more)

Subjects/Keywords: Materials Science; Chemical engineering; Energy; capacitor; electrode; lithium ion battery; microporous carbon; porous; templated synthesis

…volumetric energy density. Scheme 2-1. Schematic of an electrode based on porous graphitized… …mechanism where charge is stored statically at the interface between electrode and electrolyte… …Such electrode materials don’t undergo the electrochemical reactions present in batteries… …x29; and hierarchically porous (incorporating micro, meso and/or macropores)… …more recently, soft template can be used to make templated, porous carbon. The use of hard…

11 more images…

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APA (6^th Edition):

Rice, L. M. (2012). Carbon-based Materials for Energy Storage. (Thesis). UCLA. Retrieved from http://www.escholarship.org/uc/item/33q3w6hw

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rice, Lynn Margaret. “Carbon-based Materials for Energy Storage.” 2012. Thesis, UCLA. Accessed March 01, 2021. http://www.escholarship.org/uc/item/33q3w6hw.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rice, Lynn Margaret. “Carbon-based Materials for Energy Storage.” 2012. Web. 01 Mar 2021.

Vancouver:

Rice LM. Carbon-based Materials for Energy Storage. [Internet] [Thesis]. UCLA; 2012. [cited 2021 Mar 01]. Available from: http://www.escholarship.org/uc/item/33q3w6hw.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rice LM. Carbon-based Materials for Energy Storage. [Thesis]. UCLA; 2012. Available from: http://www.escholarship.org/uc/item/33q3w6hw

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

17. Shang, Xia. A combined modeling and experimental study assessing the impact of fluid pulsation and operating schemes on charge and energy efficiency in capacitive deionization.

Degree: MS, Mechanical Engineering, 2017, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/99442

► Cell-cycling performance in capacitive deionization (CDI) can suffer from various charge-efficiency loss mechanisms. In conventional CDI, we show that salt residue within electrodes introduces a… (more)

▼ Cell-cycling performance in capacitive deionization (CDI) can suffer from various charge-efficiency loss mechanisms. In conventional CDI, we show that salt residue within electrodes introduces a temporal lag between charge and desalination stages of a CDI cycle. Without accounting for this effect in the collection of effluent, significant performance degradation occurs as current density increases. To overcome this we use pulse-flow operation to control fresh- and brine-water concentrations. The charge and energy efficiency performance between the two flow-modes is compared using a porous electrode model that is calibrated and validated with experimental data. To quantify specific contributions to charge efficiency losses, the model captures local salt variations resulting from a combination of electrosorption, leakage current, and immobile surface charge. Compared to traditional continuous-flow operation, simulation results show that charge efficiency increases up to 23% in the pulse-flow operation at a current density up to 20 A/m2, which leads to a 73% decrease of specific energy consumption (SEC). In addition, the SEC predicted by the pulse-flow operation model closely aligns with the predictions of the continuous-flow model after accounting for temporal lag in effluent salinity. Both simulations and experimental results suggest that pulse-flow operation closely approximates the performance in continuous-flow operation. We further apply the pulse-flow model to simulate two different CDI architectures (membrane capacitive deionization and flow-through CDI) and focus on the identification energy losses specific to each system component. The model was used to quantify the effects of ohmic resistance, parasitic faradaic reactions, co-ion repulsion, and incomplete utilization of electrode capacitance on salt specific energy consumption (kJ g-NaCl-1) across a range of current densities and charging voltage limits. We show that significant irreversible energy loss is observed at low and high current density, which is mainly contributed by the parasitic reactions and resistive charge transport dissipation, respectively. However, the greatest source of energy loss can be linked to reverse diffusional flux at the beginning of a charging stage, caused by retention of salt from the brine discharge stage. From this analysis, we show how target effluent concentration and cell architecture can be controlled to reduce energy consumption by greater than one order of magnitude. Advisors/Committee Members: Smith, Kyle C (advisor).

Subjects/Keywords: Capacitive deionization; Flow mode; Numerical simulation; Porous electrode model; Charge efficiency; Salt specific energy consumption

…OF SYMBOLS 𝑎∗ effective surface area for faradaic reactions on porous electrode, m2… …carbon electrode desalting system based on porous electrode theory.10 In 1990s, Farmer and his… …demonstrate with two-dimensional porous-electrode modeling, the spatial separation of electrode and… …immobile charges through parasitic reactions or surface modification. Porous Electrode Modeling… …present porous electrode model, we incorporate microscopic electrosorption processes through an…

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APA (6^th Edition):

Shang, X. (2017). A combined modeling and experimental study assessing the impact of fluid pulsation and operating schemes on charge and energy efficiency in capacitive deionization. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/99442

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Shang, Xia. “A combined modeling and experimental study assessing the impact of fluid pulsation and operating schemes on charge and energy efficiency in capacitive deionization.” 2017. Thesis, University of Illinois – Urbana-Champaign. Accessed March 01, 2021. http://hdl.handle.net/2142/99442.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Shang, Xia. “A combined modeling and experimental study assessing the impact of fluid pulsation and operating schemes on charge and energy efficiency in capacitive deionization.” 2017. Web. 01 Mar 2021.

Vancouver:

Shang X. A combined modeling and experimental study assessing the impact of fluid pulsation and operating schemes on charge and energy efficiency in capacitive deionization. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2017. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2142/99442.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Shang X. A combined modeling and experimental study assessing the impact of fluid pulsation and operating schemes on charge and energy efficiency in capacitive deionization. [Thesis]. University of Illinois – Urbana-Champaign; 2017. Available from: http://hdl.handle.net/2142/99442

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Clemson University

18. Feng, Guang. MOLECULAR PHYSICS OF ELECTRICAL DOUBLE LAYERS IN ELECTROCHEMICAL CAPACITORS.

Degree: PhD, Mechanical Engineering, 2010, Clemson University

URL: https://tigerprints.clemson.edu/all_dissertations/624

► At present, electrochemical capacitors (ECs) are emerging as a novel type of energy storage devices and have attracted remarkable attention, due to their key characteristics,… (more)

▼ At present, electrochemical capacitors (ECs) are emerging as a novel type of energy storage devices and have attracted remarkable attention, due to their key characteristics, such as high power density and excellent durability. However, the moderate energy density of ECs restricts their widespread deployment in everyday technology. To surmount this limitation, four strategies are adopted: (1) to reduce the total system mass, (2) to increase the specific surface area of electrodes, (3) to enhance normalized capacitance, and (4) to expand the range of potentials applied on electrodes. The implementation of these approaches critically relies on the fundamental understanding of physical processes underlying the energy storage mechanisms hinging on the electrical double layers (EDLs) in ECs. In this dissertation, to gain the fundamentals of EDLs in ECs, based on the strategies described above, we studied the structure, capacitance, and dynamics of EDLs in different electrolytes near electrodes featuring different pores using atomistic simulations. The pores of electrodes are categorized into macropores, mesopores, and micropores, following the decreasing order of pore size. The chosen electrolytes fall into aqueous electrolytes, organic electrolytes, and ionic liquids (ILs), listed by the increasing order of their decomposition voltages. For the aqueous electrolytes, we explored the water and ion distributions inside electrified micropores (< 2nm) using molecular dynamics (MD) simulations. The results showed that the ion distribution differs qualitatively from that described by classical EDL theories. Based on such exceptional phenomenon, a new sandwich capacitance model was developed to describe the EDLs inside micropores, which is capable of predicting the sharp increase of capacitance that has been experimentally observed in micropores. For the organic electrolytes, we examined the ion solvation and the EDL structure, capacitance, and dynamics in the electrolyte of tetraethylammonium tetrafluoroborate (TEABF₄) in the aprotic solvent of acetonitrile (ACN). Firstly, the solvation of TEA⁺ and BF₄<super>–</super> ions is found to be much weaker than that of small inorganic ions. This characteristic accounts for the rich structure of EDLs near the electrodes. In particular, near charged electrodes, the ion distribution cannot be explained by the traditional EDL models. Secondly, the computed capacitances of EDLs agree well with those inferred from experimental measurements. Finally, we probed the dynamics of EDLs in organic electrolytes by analyzing the rotational dynamics of solvent and the self diffusion coefficients of ion/solvent. For the ILs, we performed the MD simulations of EDLs at the interface between an IL of 1-butyl-3-methylimidazolium nitrate ([BMIM][NO₃]) and planar electrodes. The results revealed that the structure of the EDL is significantly affected by the liquid nature of the IL, the short-range… Advisors/Committee Members: Qiao, Rui, Gao , Bruce, Miller , Richard, Saylor , John.

Subjects/Keywords: Aqueous Electrolyte; Electrical Double Layer; Electrochemical Capacitors; Ionic Liquid; Organic Electrolyte; Porous Electrode; Nanoscience and Nanotechnology

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APA (6^th Edition):

Feng, G. (2010). MOLECULAR PHYSICS OF ELECTRICAL DOUBLE LAYERS IN ELECTROCHEMICAL CAPACITORS. (Doctoral Dissertation). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_dissertations/624

Chicago Manual of Style (16^th Edition):

Feng, Guang. “MOLECULAR PHYSICS OF ELECTRICAL DOUBLE LAYERS IN ELECTROCHEMICAL CAPACITORS.” 2010. Doctoral Dissertation, Clemson University. Accessed March 01, 2021. https://tigerprints.clemson.edu/all_dissertations/624.

MLA Handbook (7^th Edition):

Feng, Guang. “MOLECULAR PHYSICS OF ELECTRICAL DOUBLE LAYERS IN ELECTROCHEMICAL CAPACITORS.” 2010. Web. 01 Mar 2021.

Vancouver:

Feng G. MOLECULAR PHYSICS OF ELECTRICAL DOUBLE LAYERS IN ELECTROCHEMICAL CAPACITORS. [Internet] [Doctoral dissertation]. Clemson University; 2010. [cited 2021 Mar 01]. Available from: https://tigerprints.clemson.edu/all_dissertations/624.

Council of Science Editors:

Feng G. MOLECULAR PHYSICS OF ELECTRICAL DOUBLE LAYERS IN ELECTROCHEMICAL CAPACITORS. [Doctoral Dissertation]. Clemson University; 2010. Available from: https://tigerprints.clemson.edu/all_dissertations/624

19. -1518-4685. Custom-cell-component design and development for rechargeable lithium-sulfur batteries.

Degree: PhD, Materials Science and Engineering, 2015, University of Texas – Austin

URL: http://hdl.handle.net/2152/30529

► Development of alternative cathodes that have high capacity and long cycle life at an affordable cost is critical for next generation rechargeable batteries to meet… (more)

▼ Development of alternative cathodes that have high capacity and long cycle life at an affordable cost is critical for next generation rechargeable batteries to meet the ever-increasing requirements of global energy storage market. Lithium-sulfur batteries, employing sulfur cathodes, are increasingly being investigated due to their high theoretical capacity, low cost, and environmental friendliness. However, the practicality of lithium-sulfur technology is hindered by technical obstacles, such as short shelf and cycle life, arising from the shuttling of polysulfide intermediates between the cathode and the anode as well as the poor electronic conductivity of sulfur and the discharge product Li2S. This dissertation focuses on overcoming some of these problems. The sulfur cathode involves an electrochemical conversion reaction compared to the conventional insertion-reaction cathodes. Therefore, modifications in cell-component configurations/structures are needed to realize the full potential of lithium-sulfur cells. This dissertation explores various custom and functionalized cell components that can be adapted with pure sulfur cathodes, e.g., porous current collectors in Chapter 3, interlayers in Chapter 4, sandwiched electrodes in Chapter 5, and surface-coated separators in Chapter 6. Each chapter introduces the new concept and design, followed by necessary modifications and development. The porous current collectors embedded with pure sulfur cathodes are able to contain the active material in their porous space and ensure close contact between the insulating active material and the conductive matrix. Hence, a stable and reversible electrochemical-conversion reaction is facilitated. In addition, the use of highly porous substrates allows the resulting cell to accommodate high sulfur loading. The interlayers inserted between the pure sulfur cathode and the separator effectively intercept the diffusing polysulfides, suppress polysulfide migration, localize the active material within the cathode region, and boost cell cycle stability. The combination of porous current collectors and interlayers offers sandwiched electrode structure for the lithium/dissolved polysulfide cells. By way of integrating the advantages from the porous current collector and the interlayer, the sandwiched electrodes stabilize the dissolved polysulfide catholyte within the cathode region, resulting in a high discharge capacity, long-term cycle stability, and high sulfur loading. The novel surface-coated separators have a polysulfide trap or filter coated onto one side of a commercial polymeric separator. The functional coatings possess physical and/or chemical polysulfide-trapping capabilities to intercept, absorb, and trap the dissolved polysulfides during cell discharge. The functional coatings also have high electrical conductivity and porous channels to facilitate electron, lithium-ion, and electrolyte mobility for reactivating the trapped active material. As a result, effective reutilization of the trapped active material… Advisors/Committee Members: Manthiram, Arumugam (advisor), Goodenough, John Bannister (committee member), Ferreira, Paulo Jorge (committee member), Yu, Guihua (committee member), Hwang, Gyeong (committee member).

Subjects/Keywords: Electrochemistry; Lithium-sulfur batteries; Cell configuration; Porous current collector; Interlayer; Sandwiched electrode; Separator

…24 1.6.1 Porous current collectors… …33 2.2.1 Porous structure analysis… …Chapter 3: The research and development of porous current collectors ................37 3.1… …40 3.2.1 Paste-absorption method for porous current collector application… …43 3.3.1 Nickel foam current collector: a porous metal current collector 43 3.3.1.1…

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APA (6^th Edition):

-1518-4685. (2015). Custom-cell-component design and development for rechargeable lithium-sulfur batteries. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/30529

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-1518-4685. “Custom-cell-component design and development for rechargeable lithium-sulfur batteries.” 2015. Doctoral Dissertation, University of Texas – Austin. Accessed March 01, 2021. http://hdl.handle.net/2152/30529.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-1518-4685. “Custom-cell-component design and development for rechargeable lithium-sulfur batteries.” 2015. Web. 01 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-1518-4685. Custom-cell-component design and development for rechargeable lithium-sulfur batteries. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2015. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2152/30529.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-1518-4685. Custom-cell-component design and development for rechargeable lithium-sulfur batteries. [Doctoral Dissertation]. University of Texas – Austin; 2015. Available from: http://hdl.handle.net/2152/30529

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Georgia Tech

20. Zhang, Yuelan. Synthesis and Characterization of Nanostructured Electrodes for Solid State Ionic Devices.

Degree: PhD, Materials Science and Engineering, 2006, Georgia Tech

URL: http://hdl.handle.net/1853/14000

► The demands for advanced power sources with high energy efficiency, minimum environmental impact, and low cost have been the impetus for the development of a… (more)

▼ The demands for advanced power sources with high energy efficiency, minimum environmental impact, and low cost have been the impetus for the development of a new generation of batteries and fuel cells. One of the key challenges in this effort is to develop and fabricate effective electrodes with desirable composition, microstructure and performance. This work focused on the design, fabrication, and characterization of nanostructured electrodes in an effort to minimize electrode polarization losses. Solid-state diffusion often limits the utilization and rate capability of electrode materials in a lithium-ion battery, especially at high charge/discharge rates. When the fluxes of Li+ insertion or extraction exceed the diffusion-limited rate of Li+ transport within the bulk phase of an electrode, concentration polarization occurs. Further, large volume changes associated with Li+ insertion or extraction could induce stresses in bulk electrodes, potentially leading to mechanical failure. Interconnected porous materials with high surface-to-volume ratio were designed to suppress the stress and promote mass transport. In this work, electrodes with these unique architectures for lithium ion batteries have been fabricated to improve the cycleability, rate capability and capacity retention. Cathodic interfacial polarization represents the predominant voltage loss in a low-temperature SOFC. For the first time, regular, homogeneous and bimodal porous MIEC electrodes were successfully fabricated using breath figure templating, which is self-assembly of the water droplets in polymer solution. The homogeneous macropores promoted rapid mass transport by decreasing the tortuosity. And mesoporous microstructure provided more surface areas for gas adsorption and more TPBs for the electrochemical reactions. Moreover, composite electrodes were developed with a modified sol-gel process for honeycomb SOFCs. The sol gel derived cathodes with fine grain size and large specific surface area, showed much lower interfacial polarization resistances than those prepared by other existing processing methods. Nanopetals of cerium hydroxycarbonate have been synthesized via a controlled hydrothermal process in a mixed water-ethanol medium. The formation of the cerium compound depends strongly on the composition of the precursors, and is attributed to the favored ethanol oxidation by Ce(IV) ions over Ce(IV) hydrolysis process. Raman studies showed that microflower CeO2 preferentially stabilizes O2 as a peroxide species on its surface for CO oxidation. Advisors/Committee Members: Liu, Meilin (Committee Chair), Bottomley, Lawrence A (Committee Member), Singh, Preet M (Committee Member), Cochran, Joe K (Committee Member), Wong, C.P. (Committee Member).

Subjects/Keywords: Lithium ion batteries; Interconnected porous electrode; Catalysts; Fuel cells; Self-assembly templating; Thin film electrode; Nanostructures; Nanostructured materials Synthesis; Solid state electronics; Fuel cells Electrodes Design and construction; Ionic crystals; Lithium cells

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zhang, Y. (2006). Synthesis and Characterization of Nanostructured Electrodes for Solid State Ionic Devices. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/14000

Chicago Manual of Style (16^th Edition):

Zhang, Yuelan. “Synthesis and Characterization of Nanostructured Electrodes for Solid State Ionic Devices.” 2006. Doctoral Dissertation, Georgia Tech. Accessed March 01, 2021. http://hdl.handle.net/1853/14000.

MLA Handbook (7^th Edition):

Zhang, Yuelan. “Synthesis and Characterization of Nanostructured Electrodes for Solid State Ionic Devices.” 2006. Web. 01 Mar 2021.

Vancouver:

Zhang Y. Synthesis and Characterization of Nanostructured Electrodes for Solid State Ionic Devices. [Internet] [Doctoral dissertation]. Georgia Tech; 2006. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1853/14000.

Council of Science Editors:

Zhang Y. Synthesis and Characterization of Nanostructured Electrodes for Solid State Ionic Devices. [Doctoral Dissertation]. Georgia Tech; 2006. Available from: http://hdl.handle.net/1853/14000

21. Green, Robert David. Carbon Dioxide Reduction on Gadolinia-Doped Ceria Cathodes.

Degree: PhD, Chemical Engineering, 2009, Case Western Reserve University School of Graduate Studies

URL: http://rave.ohiolink.edu/etdc/view?acc_num=case1232574534

► This work describes an investigation of CO-CO2 exchange on 40 mol% gadolinia-doped ceria (GDC) electrodes for potential application as a CO2 reduction cathode for the… (more)

▼ This work describes an investigation of CO-CO2 exchange on 40 mol% gadolinia-doped ceria (GDC) electrodes for potential application as a CO2 reduction cathode for the solid oxide electrolysis of CO2.A computational analysis was performed on the thick electrolyte cylindrical pellet test cell geometry to investigate the effects of this cell geometry on Electrochemical Impedance Spectroscopy (EIS) due to non-linear current distribution. The analysis showed the particular cell geometry selected does induce an error of 15% on the impedance measurements, but in a predicable linear manner. Additional parametric analyses indicate that impedance errors for the cylindrical cell geometry can be reduced by covering the faces of the pellet with the working and counter-electrodes, centering the reference electrode hole equidistant from working and counter-electrodes, or utilizing a reference electrode mounted at the midpoint edge of the pellet. A continuum-based model is described for equilibrium CO-CO2 exchange on a mixed-conducting electrode utilizing porous electrode theory. The resulting three-parameter model is expressed in terms of a characteristic resistance, a characteristic time constant, and a utilization thickness ratio, that can be related to physiochemical properties.EIS measurements were performed on the 40 mol% GDC electrodes on yttria stabilized zirconia (YSZ) electrolytes at 700-950 degrees C in reducing CO/CO2 atmospheres. Area-specific-resistance (ASR) values for this electrode were in the range of 0.8-37 ohm-cm2, about two orders of magnitude lower than measurements on Pt electrodes and slightly lower than data on Ni-YSZ electrodes in the literature under similar temperature and partial pressure of oxygen conditions. An analysis utilizing the continuum-based porous electrode model was performed to extract the vacancy diffusion coefficient and surface exchange rate coefficient as a function of temperature and partial pressure of oxygen, from the impedance results. The vacancy diffusion coefficient data agree well with published measurements of the tracer diffusion coefficient based on isotope profiling by secondary ion mass spectroscopy (SIMS), and conductivity measurements on 40 mol% GDC. The surface exchange rate coefficient values are a factor of 3 lower than published measurements of the surface reaction rate obtained from isothermal thermogravimetric relaxation and decrease with increasing partial pressure of oxygen. Advisors/Committee Members: Liu, Chung-Chiun (Advisor).

Subjects/Keywords: Chemical Engineering; Chemistry; Materials Science; carbon dioxide reduction; carbon dioxide electrolysis; Gadolinia-doped ceria; ceria; impedance spectroscopy; porous electrode model; electrode kinetics; exchange rate; vacancy diffusion coefficient; thermodynamic factor

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APA (6^th Edition):

Green, R. D. (2009). Carbon Dioxide Reduction on Gadolinia-Doped Ceria Cathodes. (Doctoral Dissertation). Case Western Reserve University School of Graduate Studies. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=case1232574534

Chicago Manual of Style (16^th Edition):

Green, Robert David. “Carbon Dioxide Reduction on Gadolinia-Doped Ceria Cathodes.” 2009. Doctoral Dissertation, Case Western Reserve University School of Graduate Studies. Accessed March 01, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1232574534.

MLA Handbook (7^th Edition):

Green, Robert David. “Carbon Dioxide Reduction on Gadolinia-Doped Ceria Cathodes.” 2009. Web. 01 Mar 2021.

Vancouver:

Green RD. Carbon Dioxide Reduction on Gadolinia-Doped Ceria Cathodes. [Internet] [Doctoral dissertation]. Case Western Reserve University School of Graduate Studies; 2009. [cited 2021 Mar 01]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=case1232574534.

Council of Science Editors:

Green RD. Carbon Dioxide Reduction on Gadolinia-Doped Ceria Cathodes. [Doctoral Dissertation]. Case Western Reserve University School of Graduate Studies; 2009. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=case1232574534

University of Oxford

22. Menshykau, Dzianis. Computational electrochemistry.

Degree: PhD, 2012, University of Oxford

URL: http://ora.ox.ac.uk/objects/uuid:64e553c7-1bd2-429d-a5de-aeb4a29fc067 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.533837

► This thesis addresses simulation of electrochemical experiments, with an emphasis on processes of diffusional mass transport to electrode surface. Following system has been studied: •… (more)

▼ This thesis addresses simulation of electrochemical experiments, with an emphasis on processes of diffusional mass transport to electrode surface. Following system has been studied: • Applying theoretical modeling and experimentation is shown that even significant surface roughness produced by deliberate polishing or scratching is not sufficient to be distinguished in cyclic voltammetry experiments conducted under the usual conditions. In stripping voltammetry experiment the shape of the voltammograms strongly depends on the model of the electron transfer but is not always sensitive to the precise model of the electrode surface; the conditions under which this is the case are identified, and generic roughness effects on stripping voltammetry are quantified. Electrode roughness can have a significant effect on the stripping of the metals from the solid electrode especially in respect of the voltammetric waveshape. • We first consider two different models of electrodes covered with electroinactive layers: the electrode is covered with a uniform layer and the layer contains pinholes. Both models are simulated and then compared to identify conditions under which they can be distinguished. Next we propose generic model to predict the influence of electroactive layer on the cyclic voltammetric. The conditions under which deviation from the behavior of a planar electrode are predicted. • We first consider one electron, one proton and next two electron, two proton reduction of surface bound species. Two mechanisms of reaction are considered: stepwise and concerted. Voltammetry studied under the three regimes of protons mass transport: infinitely fast (fully buffered solution), infinitely slow (infinitely high surface coverage of electrode) and intermediate case of finite rate of diffusional mass transport to electrode surface. Types of voltammograms observed in each case are presented and discussed. • Theory of chronoamperometry on disc and ring-recessed microelectrodes and their arrays is reported. Three and four different regimes of transient current versus time can be observed at microelectrode arrays of disc and ring electrodes, accordingly. A generic, accurate and easy to use method of experimental chronoamperometric data analysis is proposed. It is shown that the method can be applied to the simultaneous measurement of D and nC in solution. • The fabrication, characterization, and use of arrays of ring-recessed disk generator-colector microelectrodes are reported. Experiments and simulations relating to time- of-flight experiments in which material electrogenerated at a disk is diffusionally transported to the ring are reported. We further study voltammetry of electrochemically active species which undergoes first and second order chemical reactions. Current transients are found to be sensitive to the diffusion coefficient of both the reduced and oxidised species as well as to the rate of the chemical reaction and its mechanism.

Subjects/Keywords: 541.37; Chemical kinetics; Electrochemistry and electrolysis; Physical & theoretical chemistry; Structure of interfaces; Surface chemistry; Theoretical chemistry; computational chemistry; electrochemistry; microelectrode; array of microelectrodes; ring electrode; generator-collector electrods; cyclic voltammetry; chronoamperometry; stripping voltammetry; porous electrodes; rough electrodes; voltammetry of surface bound species; proton-coupled electrochemical reduction; pinhole diffusion; through-film diffusion

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APA (6^th Edition):

Menshykau, D. (2012). Computational electrochemistry. (Doctoral Dissertation). University of Oxford. Retrieved from http://ora.ox.ac.uk/objects/uuid:64e553c7-1bd2-429d-a5de-aeb4a29fc067 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.533837

Chicago Manual of Style (16^th Edition):

Menshykau, Dzianis. “Computational electrochemistry.” 2012. Doctoral Dissertation, University of Oxford. Accessed March 01, 2021. http://ora.ox.ac.uk/objects/uuid:64e553c7-1bd2-429d-a5de-aeb4a29fc067 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.533837.

MLA Handbook (7^th Edition):

Menshykau, Dzianis. “Computational electrochemistry.” 2012. Web. 01 Mar 2021.

Vancouver:

Menshykau D. Computational electrochemistry. [Internet] [Doctoral dissertation]. University of Oxford; 2012. [cited 2021 Mar 01]. Available from: http://ora.ox.ac.uk/objects/uuid:64e553c7-1bd2-429d-a5de-aeb4a29fc067 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.533837.

Council of Science Editors:

Menshykau D. Computational electrochemistry. [Doctoral Dissertation]. University of Oxford; 2012. Available from: http://ora.ox.ac.uk/objects/uuid:64e553c7-1bd2-429d-a5de-aeb4a29fc067 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.533837

University of Waterloo

23. Farhad, Siamak. Performance Simulation of Planar Solid Oxide Fuel Cells.

Degree: 2011, University of Waterloo

URL: http://hdl.handle.net/10012/6252

► The performance of solid oxide fuel cells (SOFCs) at the cell and system levels is studied using computer simulation. At the cell level, a new… (more)

▼ The performance of solid oxide fuel cells (SOFCs) at the cell and system levels is studied using computer simulation. At the cell level, a new model combining the cell micro and macro models is developed. Using this model, the microstructural variables of porous composite electrodes can be linked to the cell performance. In this approach, the electrochemical performance of porous composite electrodes is predicted using a micro-model. In the micro-model, the random-packing sphere method is used to estimate the microstructural properties of porous composite electrodes from the independent microstructural variables. These variables are the electrode porosity, thickness, particle size ratio, and size and volume fraction of electron-conducting particles. Then, the complex interdependency among the multi-component mass transport, electron and ion transports, and the electrochemical and chemical reactions in the microstructure of electrodes is taken into account to predict the electrochemical performance of electrodes. The temperature distribution in the solid structure of the cell and the temperature and species partial pressure distributions in the bulk fuel and air streams are predicted using the cell macro-model. In the macro-model, the energy transport is considered for the cell solid structure and the mass and energy transports are considered for the fuel and air streams. To demonstrate the application of the cell level model developed, entitled the combined micro- and micro-model, several anode-supported co-flow planar cells with a range of microstructures of porous composite electrodes are simulated. The mean total polarization resistance, the mean total power density, and the temperature distribution in the cells are predicted. The results of this study reveal that there is an optimum value for most of the microstructural variables of the electrodes at which the mean total polarization resistance of the cell is minimized. There is also an optimum value for most of the microstructural variables of the electrodes at which the mean total power density of the cell is maximized. The microstructure of porous composite electrodes also plays a significant role in the mean temperature, the temperature difference between the hottest and coldest spots, and the maximum temperature gradient in the solid structure of the cell. Overall, using the combined micro- and micro-model, an appropriate microstructure for porous composite electrodes to enhance the cell performance can be designed. At the system level, the full load operation of two SOFC systems is studied. To model these systems, the basic cell model is used for SOFCs at the cell level, the repeated-cell stack model is used for SOFCs at the stack level, and the thermodynamic model is used for the balance of plant components of the system. In addition to these models, a carbon deposition model based on the thermodynamic equilibrium assumption is employed. For the system level model, the first SOFC system considered is a combined heat and power (CHP) system that…

Subjects/Keywords: Fuel Cell; Solid Oxife fuel cell; Performance Simulation; Cell level model; System Level Model; Combined Micro- and Macro-model; Transport phenomena; Mass Transfer; Heat Transfer; Momentum Transfer; Biogas fuel; Ammonia fuel; Electric power generation; Heat and power system; Fuel reformer; Carbon deposition; Steam reforming; Partial oxidation; Microstructure modeling; Porous composite electrode; Portable system

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APA (6^th Edition):

Farhad, S. (2011). Performance Simulation of Planar Solid Oxide Fuel Cells. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/6252

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Farhad, Siamak. “Performance Simulation of Planar Solid Oxide Fuel Cells.” 2011. Thesis, University of Waterloo. Accessed March 01, 2021. http://hdl.handle.net/10012/6252.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Farhad, Siamak. “Performance Simulation of Planar Solid Oxide Fuel Cells.” 2011. Web. 01 Mar 2021.

Vancouver:

Farhad S. Performance Simulation of Planar Solid Oxide Fuel Cells. [Internet] [Thesis]. University of Waterloo; 2011. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10012/6252.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Farhad S. Performance Simulation of Planar Solid Oxide Fuel Cells. [Thesis]. University of Waterloo; 2011. Available from: http://hdl.handle.net/10012/6252

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Queensland University of Technology

24. Farrell, Troy W. The mathematical modelling of primary alkaline battery cathodes.

Degree: 1998, Queensland University of Technology

URL: http://eprints.qut.edu.au/36996/

Subjects/Keywords: Electric batteries Mathematical models; asymptotic analysis; battery; boundary layer; cathode; concentrated electrolyte solution; control volume; convection; differential equations; diffusion; discharge experiment; discharge simulation; electrochemistry; electrochemical methods; electrode; equivalent circuit; afinite district; graphite; industrial modelling; macrohomogenous; macroscopic; manganese dioxide; mathematical modelling; migration; model; non-linear equations; numerical techniques; pertubation analysis; porous cathode; porous electrode; porous media; potential loss; potential recovery; potassium hydroxide; primary battery; reaction; thesis; doctoral

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Farrell, T. W. (1998). The mathematical modelling of primary alkaline battery cathodes. (Thesis). Queensland University of Technology. Retrieved from http://eprints.qut.edu.au/36996/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Farrell, Troy W. “The mathematical modelling of primary alkaline battery cathodes.” 1998. Thesis, Queensland University of Technology. Accessed March 01, 2021. http://eprints.qut.edu.au/36996/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Farrell, Troy W. “The mathematical modelling of primary alkaline battery cathodes.” 1998. Web. 01 Mar 2021.

Vancouver:

Farrell TW. The mathematical modelling of primary alkaline battery cathodes. [Internet] [Thesis]. Queensland University of Technology; 1998. [cited 2021 Mar 01]. Available from: http://eprints.qut.edu.au/36996/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Farrell TW. The mathematical modelling of primary alkaline battery cathodes. [Thesis]. Queensland University of Technology; 1998. Available from: http://eprints.qut.edu.au/36996/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

25. Oyewole, Isaiah. Optimal Model Reduction of Lithium-Ion Battery Systems Using Particle Swarm Optimization.

Degree: MSin Engineering, Energy Systems Engineering, College of Engineering & Computer Science, 2019, University of Michigan

URL: http://hdl.handle.net/2027.42/148848

► Lithium-ion batteries (LIBs) have been widely used as an energy storage mechanism among all the types of rechargeable batteries owing to their high energy and… (more)

▼ Lithium-ion batteries (LIBs) have been widely used as an energy storage mechanism among all the types of rechargeable batteries owing to their high energy and power density. Because of the vast applications of LIBs in several dynamic operations, the development of a robust model to simulate the battery’s dynamic behavior and performance for control and system design is paramount. Several modeling efforts have been invested into the development of electrochemical models for simulation of LIB systems ranging from a full-order model, the so-called Doyle-Fuller-Newman (DFN) model to several reduced-order models. This thesis work involves the development of a reduced-order electrochemical model based on single particle approach with electrolyte dynamics (SPMe). The partial differential equations (PDEs) that capture the dynamic behavior and performance characteristics of the LIB systems were solved numerically through a finite difference method in MATLAB environment. For model reduction purpose, a constrained optimization problem was formulated to determine the optimal uneven discretization node points needed to numerically solve the battery PDEs for both solid and electrolyte phase concentration predictions. The optimization problem was solved using a particle swarm optimization (PSO) by minimizing the errors between the reference model, a SPMe with even discretization and the reduced model, a SPMe with uneven discretization. The proposed approach is similar to that proposed by Lee T.K. and Filipi Z., but differs because of the inclusion of electrolyte dynamics. The battery voltage was computed based on the optimal uneven discretization nodes under three different charging/discharging conditions. The proposed model demonstrates that as the number of optimal uneven discretization nodes applied to the model increases, the fidelity of the model increase. However, no significant improvement of prediction accuracy is observed after a certain level of uneven discretization. The proposed model demonstrates that in comparison to the evenly discretized model, the complexity in terms of the number of states can be reduced by 7 times without loss of physical interpretation of the diffusion and migration dynamics in the solid particles and electrolyte. This reduction in the number of discretization allows for faster computation for the purpose of control and system design. Advisors/Committee Members: Kim, Youngki (advisor), Baek, Stanley (committee member), Kwak, Kyoung Hyun (committee member).

Subjects/Keywords: Battery systems; Porous electrode theory; Optimization; Lithium-ion battery; Particle swarm optimization; Reduced-order model; Optimal model reduction; Automotive industry; SPMe; Automotive Engineering; Energy; Mechanical Engineering

…porous electrode battery, enables the lithium salt electrolyte to diffuse and migrate from one… …separator/insertion cathode cell model in 1993 [8] using the porous electrode theory… …model was developed based on porous electrode theory. This model describes lithium ion… …porous electrode theory as introduced by Doyle et al. [8], and electrode-averaging… …and their behavior are modeled based on porous electrode theory. This theory stipulates that…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Oyewole, I. (2019). Optimal Model Reduction of Lithium-Ion Battery Systems Using Particle Swarm Optimization. (Masters Thesis). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/148848

Chicago Manual of Style (16^th Edition):

Oyewole, Isaiah. “Optimal Model Reduction of Lithium-Ion Battery Systems Using Particle Swarm Optimization.” 2019. Masters Thesis, University of Michigan. Accessed March 01, 2021. http://hdl.handle.net/2027.42/148848.

MLA Handbook (7^th Edition):

Oyewole, Isaiah. “Optimal Model Reduction of Lithium-Ion Battery Systems Using Particle Swarm Optimization.” 2019. Web. 01 Mar 2021.

Vancouver:

Oyewole I. Optimal Model Reduction of Lithium-Ion Battery Systems Using Particle Swarm Optimization. [Internet] [Masters thesis]. University of Michigan; 2019. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2027.42/148848.

Council of Science Editors:

Oyewole I. Optimal Model Reduction of Lithium-Ion Battery Systems Using Particle Swarm Optimization. [Masters Thesis]. University of Michigan; 2019. Available from: http://hdl.handle.net/2027.42/148848

Queensland University of Technology

26. Johansen, Jonathan Frederick. Mathematical modelling of primary alkaline batteries.

Degree: 2007, Queensland University of Technology

URL: https://eprints.qut.edu.au/16412/

► Three mathematical models, two of primary alkaline battery cathode discharge, and one of primary alkaline battery discharge, are developed, presented, solved and investigated in this… (more)

▼ Three mathematical models, two of primary alkaline battery cathode discharge, and one of primary alkaline battery discharge, are developed, presented, solved and investigated in this thesis. The primary aim of this work is to improve our understanding of the complex, interrelated and nonlinear processes that occur within primary alkaline batteries during discharge. We use perturbation techniques and Laplace transforms to analyse and simplify an existing model of primary alkaline battery cathode under galvanostatic discharge. The process highlights key phenomena, and removes those phenomena that have very little effect on discharge from the model. We find that electrolyte variation within Electrolytic Manganese Dioxide (EMD) particles is negligible, but proton diffusion within EMD crystals is important. The simplification process results in a significant reduction in the number of model equations, and greatly decreases the computational overhead of the numerical simulation software. In addition, the model results based on this simplified framework compare well with available experimental data. The second model of the primary alkaline battery cathode discharge simulates step potential electrochemical spectroscopy discharges, and is used to improve our understanding of the multi-reaction nature of the reduction of EMD. We find that a single-reaction framework is able to simulate multi-reaction behaviour through the use of a nonlinear ion-ion interaction term. The third model simulates the full primary alkaline battery system, and accounts for the precipitation of zinc oxide within the separator (and other regions), and subsequent internal short circuit through this phase. It was found that an internal short circuit is created at the beginning of discharge, and this self-discharge may be exacerbated by discharging the cell intermittently. We find that using a thicker separator paper is a very effective way of minimising self-discharge behaviour. The equations describing the three models are solved numerically in MATLABR, using three pieces of numerical simulation software. They provide a flexible and powerful set of primary alkaline battery discharge prediction tools, that leverage the simplified model framework, allowing them to be easily run on a desktop PC.

Subjects/Keywords: advection; anode; asymptotic analysis; BET surface area; binary electrolyte; boundary condition; Butler-Volmer equation; cathode; closed circuit voltage; concentration polarisation; control volume; current path; discretisation; diffusion; electrochemical reaction; electrode; electrolytic manganese dioxide; EMD crystals; EMD particles; exchange current density; geometric surface area; initial condition; linearisation; macrohomogeneous porous electrode theory; mathematical model; Nernst equation; ohmic losses; open circuit voltage; ordinary differential equation; overpotential; partial differential equation; perturbation techniques; potassium hydroxide; potassium zincate; precipitation reaction; primary battery; separator paper; simulation; step potential electrochemical spectroscopy; ternary electrolyte; theoretical capacity; utilisation; zinc; zinc oxide

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Johansen, J. F. (2007). Mathematical modelling of primary alkaline batteries. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/16412/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Johansen, Jonathan Frederick. “Mathematical modelling of primary alkaline batteries.” 2007. Thesis, Queensland University of Technology. Accessed March 01, 2021. https://eprints.qut.edu.au/16412/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Johansen, Jonathan Frederick. “Mathematical modelling of primary alkaline batteries.” 2007. Web. 01 Mar 2021.

Vancouver:

Johansen JF. Mathematical modelling of primary alkaline batteries. [Internet] [Thesis]. Queensland University of Technology; 2007. [cited 2021 Mar 01]. Available from: https://eprints.qut.edu.au/16412/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Johansen JF. Mathematical modelling of primary alkaline batteries. [Thesis]. Queensland University of Technology; 2007. Available from: https://eprints.qut.edu.au/16412/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Open Access Theses and Dissertations