subject:(Cathode)

Texas A&M University

1. Gu, Zhihui. Dissolution of oxygen reduction electrocatalysts in acidic environment.

Degree: 2009, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2458

► Platinum (Pt) alloy nanoparticles are used as catalysts in electrochemical cells to reduce oxygen to water and to oxidize hydrogen; the overall reaction converts chemical… (more)

▼ Platinum (Pt) alloy nanoparticles are used as catalysts in electrochemical cells to reduce oxygen to water and to oxidize hydrogen; the overall reaction converts chemical energy into electrical energy. These nanocatalysts are deposited on a carbon substrate and their catalytic function takes place in acid medium. This harsh environment causes an undesired reaction, which is the dissolution of the metal atoms into the acid medium; thus affecting the catalyst life. This dissertation aims to investigate the dissolution mechanism of fuel cell cathode catalysts at the atomic level starting from the oxygen reaction intermediates on the cathode catalyst surface and propose guidelines to improve cathode catalysts durability based on our proposed mechanism. Density functional theory is employed to study various possible scenarios with the goals of understanding the mechanism of the metal atom dissolution process and establishing some guidelines that permit a rational design of catalysts with better stability against dissolution. A thermodynamic analysis of potential metal dissolution reactions in acid medium is presented first, using density functional theory calculations to explore the relative stabilities of transition metals in relation to that of Pt. The study is performed by comparing the change in reaction Gibbs free energies for different metals in a given dissolution reaction. Then, a series of density functional theory studies, tending to investigate the adsorbed atomic oxygen absorption process from cathode catalyst surface into its subsurface, includes: 1) the oxygen adsorption on various catalyst surfaces and oxygen absorption in subsurface sites to figure out the minimum energy pathway and energy barrier of on-surface oxygen migration and absorption into subsurface; 2) the oxygen coverage, the other oxygen reduction reaction intermediates, and water effects on the oxygen absorption process according to reaction pathways, energy barriers, and thermodynamic analysis; 3) the oxygen absorption process on several Pt-based alloys with various compositions and components to find out the best alloy to inhibit atomic oxygen absorption including both kinetic and thermodynamic analyses, and the effects of such alloyed species on the inhibition process. Advisors/Committee Members: Balbuena, Perla B (advisor), Seminario, Jorge M (committee member), Soriaga, Manuel P (committee member), Ugaz, Victor M (committee member).

Subjects/Keywords: Cathode; Pt catalyst; Dissolution

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APA (6^th Edition):

Gu, Z. (2009). Dissolution of oxygen reduction electrocatalysts in acidic environment. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2458

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):

Gu, Zhihui. “Dissolution of oxygen reduction electrocatalysts in acidic environment.” 2009. Thesis, Texas A&M University. Accessed July 16, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-2458.

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

MLA Handbook (7^th Edition):

Gu, Zhihui. “Dissolution of oxygen reduction electrocatalysts in acidic environment.” 2009. Web. 16 Jul 2019.

Vancouver:

Gu Z. Dissolution of oxygen reduction electrocatalysts in acidic environment. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2458.

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

Council of Science Editors:

Gu Z. Dissolution of oxygen reduction electrocatalysts in acidic environment. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2458

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

Penn State University

2. Stager, Jennifer L. Impact of Anode-separator Configurations and Cathode Materials on Microbial Fuel Cell Performance.

Degree: MS, Environmental Engineering, 2015, Penn State University

URL: https://etda.libraries.psu.edu/catalog/26687

► Microbial fuel cells (MFCs) have been shown to simultaneously treat wastewater and generate electricity. Scaling up MFCs will require compact and efficient reactor designs, stable… (more)

▼ Microbial fuel cells (MFCs) have been shown to simultaneously treat wastewater and generate electricity. Scaling up MFCs will require compact and efficient reactor designs, stable performance, inexpensive electrode materials, and high power production using domestic wastewater. In this study, small graphite fiber brush anodes were used in larger-scale MFCs to determine if stable anode potentials and high power production could be achieved when using domestic wastewater in fed batch and continuous flow modes. Additionally, a new activated carbon cathode material incorporating nitrogen and phosphorus was tested in cube MFCs to determine if power generation would be higher compared to other activated carbon cathode materials when using a phase inversion process to produce these cathodes. Small diameter graphite brush anodes were examined using three different cathode configurations: a platinum catalyst on carbon cloth without a separator (Pt-NS); a platinum catalyst on carbon cloth with polyvinyl alcohol (PVA) (Pt-PVA) separator; and an activated carbon cathode with cloth separator (AC-CS). The Pt-NS and Pt-PVA configurations achieved similar maximum power densities in batch mode, but the Pt-NS had a lower maximum power density in continuous flow mode. Long-term operation using wastewater and the Pt-NS cathode resulted in erratic anode performance based on power generation in continuous flow mode, likely as a result of oxygen contamination of the anodes. The use of a PVA separator to reduce oxygen crossover into the anode chamber did not stabilize performance. An AC-CS cathode was then examined as a method to restore anode performance, but this cathode produced only half the maximum power density obtained with the Pt-NS or Pt-PVA MFCS operated in fed batch mode. It was hypothesized that the poor stability in performance of the MFC was due to low wastewater strength. Therefore, the wastewater was amended with 1 g/L sodium acetate and operated using the AC-CS cathode in continuous flow mode. The use of the acetate amended wastewater resulted in stable operation and reproducible performance between replicate reactors. The anodes had a high negative potential and polarization data did not show signs of power overshoot. This indicates that the graphite fiber brush anodes will perform better under high COD conditions. An alternative cathode material was examined in separate tests using smaller cube type MFCs to determine if incorporating nitrogen and phosphorus into the activated carbon material would improve performance, as reported by others by a press process, when cathodes were instead constructed using a phase inversion process. After immersing cellulose in an ammonium phosphate solution, allowing it to air dry, and then heating in a nitrogen atmosphere at 5°C/min to 900°C, this material was then used to make a cathode by a phase inversion process. The power performance achieved with this dual doped cellulose-derived activated carbon cathode (cellulose N+P) was compared to a plain, self-manufactured cellulose activated…

Subjects/Keywords: Microbial Fuel Cell; Anode; Cathode

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APA (6^th Edition):

Stager, J. L. (2015). Impact of Anode-separator Configurations and Cathode Materials on Microbial Fuel Cell Performance. (Masters Thesis). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/26687

Chicago Manual of Style (16^th Edition):

Stager, Jennifer L. “Impact of Anode-separator Configurations and Cathode Materials on Microbial Fuel Cell Performance.” 2015. Masters Thesis, Penn State University. Accessed July 16, 2019. https://etda.libraries.psu.edu/catalog/26687.

MLA Handbook (7^th Edition):

Stager, Jennifer L. “Impact of Anode-separator Configurations and Cathode Materials on Microbial Fuel Cell Performance.” 2015. Web. 16 Jul 2019.

Vancouver:

Stager JL. Impact of Anode-separator Configurations and Cathode Materials on Microbial Fuel Cell Performance. [Internet] [Masters thesis]. Penn State University; 2015. [cited 2019 Jul 16]. Available from: https://etda.libraries.psu.edu/catalog/26687.

Council of Science Editors:

Stager JL. Impact of Anode-separator Configurations and Cathode Materials on Microbial Fuel Cell Performance. [Masters Thesis]. Penn State University; 2015. Available from: https://etda.libraries.psu.edu/catalog/26687

University of Bath

3. Heath, Jenny. Beyond lithium : atomic-scale insights into cathode materials for sodium and magnesium rechargeable batteries.

Degree: PhD, 2018, University of Bath

URL: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.761000

► The importance of energy storage worldwide is increasing with the use of renewable energy sources and electric vehicles. With the intermittent nature of wind and… (more)

▼ The importance of energy storage worldwide is increasing with the use of renewable energy sources and electric vehicles. With the intermittent nature of wind and solar power, large-scale grid storage is an extremely important progression needed to reduce the use of fossil fuels. For this to become a reality, rechargeable batteries beyond existing Li-ion technologies need consideration. The development of such batteries requires improvement of understanding their component materials. Modern computer modelling techniques enable valuable insights into the fundamental defect, ion transport and voltage properties of battery materials at the atomic level. Atomistic simulation and ab initio density functional theory (DFT) techniques have been used to study a number of potential cathode materials for Na-ion and Mg batteries. Firstly, the olivine and maricite forms of NaFePO4 are considered in terms of their defect formation energies and Na ion diffusion. The atomistic study indicates that anti-site disorder is the most favourable type of intrinsic defect. The activation energies for Na-ion migration in the olivine and maricite materials are 0.4 eV and 1.6 – 1.8 eV respectively. Moreover, molecular dynamics (MD) studies reveal that there is only substantial Na-ion diffusion in the olivine structure, with diffusion coefficients (DNa) at 300 K of 7 x 10−13 cm2s−1 for maricite and 4 x 10−9 cm2s−1 for olivine NaFePO4. The presence of anti-site defects is shown to decrease Na+ diffusion within the olivine structure, which is of relevance to its rate behaviour. Secondly, the effect of lattice strain on ion transport and defect formation in olivine-type LiFePO4 and NaFePO4 is investigated as a means to enhance their ion conduction properties. It is predicted that lattice strain can have a remarkable effect on the rate performance of olivine cathode materials, with a major increase in ionic conductivity and decrease in blocking defectsat room temperature. Thirdly, DFT techniques have been used to examinesurface and grain boundary formation in P2-NaCoO2. The coordination lossexperienced by ions present at surfaces is found to influence the resultingsurface energy. Layered oxide cathode materials were further investigated byconsidering the effect of Mg2+ doping on P2-Na2 [Ni1 Mn2 ]O2. Na vacancy 333formation energies decreased with 10% Mg2+ doping on the Ni site and an increase in Na diffusion was predicted with MD calculations. This positive effect on Na ion conductivity is caused by displacement of the Mg ions from the transition metal layer and the resulting change in electrostatic potential. Finally, Mg ion conduction, doping and voltage behaviour of MgFeSiO4 were studied. The Mg-ion migration activation energy is relatively low for an olivine-type silicate, and MD simulations predict a diffusion coefficient (DMg) of 10−9 cm2s−1, suggesting favourable electrode kinetics. Partial substitution of Fe by Co or Mn could increase the cell voltage from 2.3 V vs Mg/Mg2+ to 2.8 - 3.0 V.

Subjects/Keywords: 540; Battery; Cathode; Sodium; Magnesium

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APA (6^th Edition):

Heath, J. (2018). Beyond lithium : atomic-scale insights into cathode materials for sodium and magnesium rechargeable batteries. (Doctoral Dissertation). University of Bath. Retrieved from https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.761000

Chicago Manual of Style (16^th Edition):

Heath, Jenny. “Beyond lithium : atomic-scale insights into cathode materials for sodium and magnesium rechargeable batteries.” 2018. Doctoral Dissertation, University of Bath. Accessed July 16, 2019. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.761000.

MLA Handbook (7^th Edition):

Heath, Jenny. “Beyond lithium : atomic-scale insights into cathode materials for sodium and magnesium rechargeable batteries.” 2018. Web. 16 Jul 2019.

Vancouver:

Heath J. Beyond lithium : atomic-scale insights into cathode materials for sodium and magnesium rechargeable batteries. [Internet] [Doctoral dissertation]. University of Bath; 2018. [cited 2019 Jul 16]. Available from: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.761000.

Council of Science Editors:

Heath J. Beyond lithium : atomic-scale insights into cathode materials for sodium and magnesium rechargeable batteries. [Doctoral Dissertation]. University of Bath; 2018. Available from: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.761000

University of Wollongong

4. Gao, Xuanwen. Development of novel materials for rechargeable lithium batteries.

Degree: PhD, 2014, University of Wollongong

URL: 030304 Physical Chemistry of Materials ; https://ro.uow.edu.au/theses/4364

► In the field of electrical energy storage, lithium ion batteries (LIBs) are considered as one of the most promising technologies due to their particularly… (more)

Subjects/Keywords: Lithium battery; cathode; anode; electrolyte

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APA (6^th Edition):

Gao, X. (2014). Development of novel materials for rechargeable lithium batteries. (Doctoral Dissertation). University of Wollongong. Retrieved from 030304 Physical Chemistry of Materials ; https://ro.uow.edu.au/theses/4364

Chicago Manual of Style (16^th Edition):

Gao, Xuanwen. “Development of novel materials for rechargeable lithium batteries.” 2014. Doctoral Dissertation, University of Wollongong. Accessed July 16, 2019. 030304 Physical Chemistry of Materials ; https://ro.uow.edu.au/theses/4364.

MLA Handbook (7^th Edition):

Gao, Xuanwen. “Development of novel materials for rechargeable lithium batteries.” 2014. Web. 16 Jul 2019.

Vancouver:

Gao X. Development of novel materials for rechargeable lithium batteries. [Internet] [Doctoral dissertation]. University of Wollongong; 2014. [cited 2019 Jul 16]. Available from: 030304 Physical Chemistry of Materials ; https://ro.uow.edu.au/theses/4364.

Council of Science Editors:

Gao X. Development of novel materials for rechargeable lithium batteries. [Doctoral Dissertation]. University of Wollongong; 2014. Available from: 030304 Physical Chemistry of Materials ; https://ro.uow.edu.au/theses/4364

Texas A&M University

5. Lynch, Thomas. Surface Modification of LiNi0.5Mn0.3Co0.2O2 Cathode for Improved Battery Performance.

Degree: 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11836

► This thesis details electrical and physical measurements of pulsed laser deposition-applied thin film coatings of Alumina, Ceria, and Yttria-stabilized Zirconia (YSZ) on a LiNi0.5Mn0.3Co0.2O2 (NMC)… (more)

▼ This thesis details electrical and physical measurements of pulsed laser deposition-applied thin film coatings of Alumina, Ceria, and Yttria-stabilized Zirconia (YSZ) on a LiNi0.5Mn0.3Co0.2O2 (NMC) cathode in a Lithium ion battery. Typical NMC cathodes exhibit problems such as decreased rate performance and an opportunity for increased capacity exists by raising operation voltage beyond the electrolyte stability window. Very thin (~10 nm) coatings of stable oxides provide a pathway to solve both problems. As well, the electrochemical impedance spectra of the uncoated and coated cells were measured after different numbers of cycles to reveal the property variation in the cathode. Further understanding of the mechanism of rate performance enhancement and chemical protection by thin oxide coatings will continue to improve battery capability and open up new applications. Ceria-coated Li-NMC cells show the best capacity and rate performance in battery testing. Through electrochemical impedance spectroscopy (EIS), the surface film resistance was found to remain stable or even drop slightly after repeated cycling at high voltage. CeO2 is proposed as a coating for Lithium ion battery cathodes owing to its high chemical stability and the demonstrated but not yet well understood electrical conductivity. Alumina-coated cathode shows comparable performance as that of the uncoated cell in the early stage of the test, but through the course of testing the rate capability and recoverable capacity is improved. This is possibly due to Al2O3?s well-known abilities as HF scavenger and chemically inert nature. YSZ-coated cathode performs worse than the uncoated ones in terms of capacity, rate capability, and EIS-related figures of merit. The reason for the poor performance is not yet known, and repeatability tests are under way to verify performance. High voltage cycling reveals no obvious difference in irreversible loss between the coated or uncoated cells. The reason for the lack of distinction could be the relatively small percentage of surface coating compared to the thick doctor-blade processed cathode layer. Advisors/Committee Members: Wang, Haiyan (advisor), Harris, Harlan (committee member), Radovic, Miladin (committee member), Annapareddy, Narasimha (committee member).

Subjects/Keywords: Lithium ion battery; surface modification; cathode; NMC

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APA (6^th Edition):

Lynch, T. (2012). Surface Modification of LiNi0.5Mn0.3Co0.2O2 Cathode for Improved Battery Performance. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11836

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):

Lynch, Thomas. “Surface Modification of LiNi0.5Mn0.3Co0.2O2 Cathode for Improved Battery Performance.” 2012. Thesis, Texas A&M University. Accessed July 16, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11836.

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

MLA Handbook (7^th Edition):

Lynch, Thomas. “Surface Modification of LiNi0.5Mn0.3Co0.2O2 Cathode for Improved Battery Performance.” 2012. Web. 16 Jul 2019.

Vancouver:

Lynch T. Surface Modification of LiNi0.5Mn0.3Co0.2O2 Cathode for Improved Battery Performance. [Internet] [Thesis]. Texas A&M University; 2012. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11836.

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

Council of Science Editors:

Lynch T. Surface Modification of LiNi0.5Mn0.3Co0.2O2 Cathode for Improved Battery Performance. [Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11836

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

Wright State University

6. Patel, Jay. GROWTH AND CHARACTERIZATION OF CARBON NANOMATERIALS.

Degree: MS, Physics, 2011, Wright State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=wright1310148312

► In this thesis, single and multi-layered graphene films were epitaxially grown on either Si-face or C-face of SiC single crystal substrates. The film growth conditions,… (more)

Subjects/Keywords: Physics; carbon nanotube; field emission; cathode; graphene

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APA (6^th Edition):

Patel, J. (2011). GROWTH AND CHARACTERIZATION OF CARBON NANOMATERIALS. (Masters Thesis). Wright State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=wright1310148312

Chicago Manual of Style (16^th Edition):

Patel, Jay. “GROWTH AND CHARACTERIZATION OF CARBON NANOMATERIALS.” 2011. Masters Thesis, Wright State University. Accessed July 16, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1310148312.

MLA Handbook (7^th Edition):

Patel, Jay. “GROWTH AND CHARACTERIZATION OF CARBON NANOMATERIALS.” 2011. Web. 16 Jul 2019.

Vancouver:

Patel J. GROWTH AND CHARACTERIZATION OF CARBON NANOMATERIALS. [Internet] [Masters thesis]. Wright State University; 2011. [cited 2019 Jul 16]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=wright1310148312.

Council of Science Editors:

Patel J. GROWTH AND CHARACTERIZATION OF CARBON NANOMATERIALS. [Masters Thesis]. Wright State University; 2011. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=wright1310148312

The Ohio State University

7. Choi, Hyunkyu. Perovskite-type oxide material as electro-catalysts for solid oxide fuel cells.

Degree: PhD, Chemical and Biomolecular Engineering, 2012, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1354652812

► Solid oxide fuel cells (SOFCs) are one of the most promising energy conversion devices for the next generation. This is mainly a result of the… (more)

▼ Solid oxide fuel cells (SOFCs) are one of the most promising energy conversion devices for the next generation. This is mainly a result of the low emission of environmental hazardous species associated with SOFC’s, high fuel conversion efficiency, and fuel flexibility. However, current ‘state-of-the art’ catalysts used in SOFCs are suffering from several drawbacks that encumber a commercial application of SOFCs in the direct conversion of hydrocarbons. In this application, high operating temperatures are required due to low oxygen reduction reaction (ORR) activity at the cathode, which limits the use of less expensive materials. In addition, ‘state of the art’ anode catalysts are very susceptible to sulfur poisoning and carbon depositions when it is operated with carbonaceous fuels. Since SOFCs aim to use the relatively abundant fuel sources, such as coal-derived syngas and natural gas, high activity and stable catalysts are required. Therefore, the need in developing and testing new catalysts formulations for both cathode and anode catalysts are crucial.The current research aims to find solutions for these problems through development of novel electro-catalysts based on perovskite materials. The objective is to develop perovskite materials which are capable of enhancing ORR activity as well as possessing a high tolerance to sulfur poisoning and carbon laydown. New formulations of cerium-doped perovskite material were synthesized with varying concentrations of cerium. The bulk structure, oxygen mobility, and electro-catalytic performance of the catalysts were examined using in-situ X-ray diffraction (XRD), oxygen temperature-programmed desorption (O2-TPD), X-ray absorption fine structure (XAFS), CO2 temperature programmed oxidation (TPO) and button cell/impedance measurements.Cerium-doped perovskites exhibit a cubic structure at room temperature and no apparent structural changes were observed with increasing temperature. An additional CeO2 phase was observed when cerium concentration exceeded 15% in the A-site of perovskite. Thermal compatibility of the catalyst gets closer to that of galdolinia-doped ceria (GDC) electrolyte by addition of cerium. Oxidation states of both Fe and Co were shown to be very close to their valence state with different cerium dopant levels at room temperature, indicating that the charge imbalance is compensated by the creation of oxygen vacancies. The oxygen vacancy was generated mainly from the reduction of Co where the Fe contribution was minimal. It was observed that the oxygen vacancy generation was inversely proportional to the dopant level of Ce. However, the electrocatalytic activity showed that the intermediate concentration of Ce doping has the best unit cell performance, which suggests that the secondary ceria phase at higher cerium dopant levels has a detrimental effect on the performance. The trend of the unit cell performance followed the CO2-TPO experiment results and found to be a good probe for button cell performance.On the anode side, the structural stability of the new… Advisors/Committee Members: Ozkan, Umit (Advisor).

Subjects/Keywords: Chemical Engineering; SOFC; perovskite; anode; cathode

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APA (6^th Edition):

Choi, H. (2012). Perovskite-type oxide material as electro-catalysts for solid oxide fuel cells. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1354652812

Chicago Manual of Style (16^th Edition):

Choi, Hyunkyu. “Perovskite-type oxide material as electro-catalysts for solid oxide fuel cells.” 2012. Doctoral Dissertation, The Ohio State University. Accessed July 16, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354652812.

MLA Handbook (7^th Edition):

Choi, Hyunkyu. “Perovskite-type oxide material as electro-catalysts for solid oxide fuel cells.” 2012. Web. 16 Jul 2019.

Vancouver:

Choi H. Perovskite-type oxide material as electro-catalysts for solid oxide fuel cells. [Internet] [Doctoral dissertation]. The Ohio State University; 2012. [cited 2019 Jul 16]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1354652812.

Council of Science Editors:

Choi H. Perovskite-type oxide material as electro-catalysts for solid oxide fuel cells. [Doctoral Dissertation]. The Ohio State University; 2012. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1354652812

Oregon State University

8. Wells, Bruce Arrington. Recording impulse waves with the Dufour cathode-ray oscillograph.

Degree: MS, Electrical Engineering, 1941, Oregon State University

URL: http://hdl.handle.net/1957/53634

Subjects/Keywords: Cathode ray oscillograph

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APA (6^th Edition):

Wells, B. A. (1941). Recording impulse waves with the Dufour cathode-ray oscillograph. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/53634

Chicago Manual of Style (16^th Edition):

Wells, Bruce Arrington. “Recording impulse waves with the Dufour cathode-ray oscillograph.” 1941. Masters Thesis, Oregon State University. Accessed July 16, 2019. http://hdl.handle.net/1957/53634.

MLA Handbook (7^th Edition):

Wells, Bruce Arrington. “Recording impulse waves with the Dufour cathode-ray oscillograph.” 1941. Web. 16 Jul 2019.

Vancouver:

Wells BA. Recording impulse waves with the Dufour cathode-ray oscillograph. [Internet] [Masters thesis]. Oregon State University; 1941. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/1957/53634.

Council of Science Editors:

Wells BA. Recording impulse waves with the Dufour cathode-ray oscillograph. [Masters Thesis]. Oregon State University; 1941. Available from: http://hdl.handle.net/1957/53634

Penn State University

9. Zhang, Yimin. THE USE AND OPTIMIZATION OF STAINLESS STEEL MESH CATHODES IN MICROBIAL ELECTROLYSIS CELLS.

Degree: MS, Environmental Engineering, 2010, Penn State University

URL: https://etda.libraries.psu.edu/catalog/10828

► Microbial electrolysis cells (MECs) provide a high yield method for producing hydrogen from renewable biomass. One challenge for commercialization of the technology is a low-cost… (more)

Subjects/Keywords: microbial electrolysis cell; stainless steel mesh; cathode

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APA (6^th Edition):

Zhang, Y. (2010). THE USE AND OPTIMIZATION OF STAINLESS STEEL MESH CATHODES IN MICROBIAL ELECTROLYSIS CELLS. (Masters Thesis). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/10828

Chicago Manual of Style (16^th Edition):

Zhang, Yimin. “THE USE AND OPTIMIZATION OF STAINLESS STEEL MESH CATHODES IN MICROBIAL ELECTROLYSIS CELLS.” 2010. Masters Thesis, Penn State University. Accessed July 16, 2019. https://etda.libraries.psu.edu/catalog/10828.

MLA Handbook (7^th Edition):

Zhang, Yimin. “THE USE AND OPTIMIZATION OF STAINLESS STEEL MESH CATHODES IN MICROBIAL ELECTROLYSIS CELLS.” 2010. Web. 16 Jul 2019.

Vancouver:

Zhang Y. THE USE AND OPTIMIZATION OF STAINLESS STEEL MESH CATHODES IN MICROBIAL ELECTROLYSIS CELLS. [Internet] [Masters thesis]. Penn State University; 2010. [cited 2019 Jul 16]. Available from: https://etda.libraries.psu.edu/catalog/10828.

Council of Science Editors:

Zhang Y. THE USE AND OPTIMIZATION OF STAINLESS STEEL MESH CATHODES IN MICROBIAL ELECTROLYSIS CELLS. [Masters Thesis]. Penn State University; 2010. Available from: https://etda.libraries.psu.edu/catalog/10828

UCLA

10. Wang, Jiechuan. Operation of Lanthanum Hexaboride Hollow Cathode with Argon Gas.

Degree: Electrical Engineering, 2018, UCLA

URL: http://www.escholarship.org/uc/item/5777w22p

► A lanthanum hexaboride hollow cathode using argon gas has been built as a prototype for the eventual development of a hollow cathode that operates with… (more)

Subjects/Keywords: Engineering; argon; Lanthanum hexaboride hollow cathode

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APA (6^th Edition):

Wang, J. (2018). Operation of Lanthanum Hexaboride Hollow Cathode with Argon Gas. (Thesis). UCLA. Retrieved from http://www.escholarship.org/uc/item/5777w22p

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):

Wang, Jiechuan. “Operation of Lanthanum Hexaboride Hollow Cathode with Argon Gas.” 2018. Thesis, UCLA. Accessed July 16, 2019. http://www.escholarship.org/uc/item/5777w22p.

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

MLA Handbook (7^th Edition):

Wang, Jiechuan. “Operation of Lanthanum Hexaboride Hollow Cathode with Argon Gas.” 2018. Web. 16 Jul 2019.

Vancouver:

Wang J. Operation of Lanthanum Hexaboride Hollow Cathode with Argon Gas. [Internet] [Thesis]. UCLA; 2018. [cited 2019 Jul 16]. Available from: http://www.escholarship.org/uc/item/5777w22p.

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

Council of Science Editors:

Wang J. Operation of Lanthanum Hexaboride Hollow Cathode with Argon Gas. [Thesis]. UCLA; 2018. Available from: http://www.escholarship.org/uc/item/5777w22p

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

University of Sydney

11. Gummersall, David Vaughan. Scaling laws of electron confinement and power losses in zero and low beta Polywell devices .

Degree: 2014, University of Sydney

URL: http://hdl.handle.net/2123/13541

► The Polywell consists of three orthogonal pairs of opposing coil current loops equidistant from the center of the device. The coils produce strong magnetic field… (more)

▼ The Polywell consists of three orthogonal pairs of opposing coil current loops equidistant from the center of the device. The coils produce strong magnetic field gradients to confine a central negative space charge, of electrons, to create a virtual cathode within the Polywell. To investigate electron confinement in the Polywell, we developed an orbital theory simulation, which was then used to simulate electrons in the vacuum magnetic fields of a zero beta (ratio of plasma pressure to magnetic pressure) Polywell. Both empirical and analytical expressions of the electron conﬁnement time and average position within the device were obtained in terms of the current in the ﬁeld coils, the dimensions of the device, and the kinetic energy of the electrons. Comparisons between the numerical simulations and the analytically derived expressions showed good agreement over a parameter range that spanned several orders of magnitude. Electron recirculation exterior to the Polywell device have been investigated in order to mitigate electron cusp losses. It was observed that without a positive bias placed on the Polywell coils the electron trajectories intersected with the vacuum chamber wall. Recirculating electrons spent approximately an order of magnitude longer outside the device compared to their internal confinement time. Also, the volume required to accommodate the recirculating electrons was calculated to be 90% of the vacuum chamber volume, using the optimum parameters used in the simulation. By modifying the cusp transmission probability to include the electrostatic repulsion effects of the repeller plates we derived new electron confinement time scaling laws. We also predict a significant improvement in the confinement time of electrons. Finally, we derived the electron power loss scaling laws for a thermalised distribution of electrons with and without electrostatic plugging. Also, space charge limited flow effects were considered in the cusp of the device.

Subjects/Keywords: Polywel; fusion; plasma; confinement; virtual; cathode

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APA (6^th Edition):

Gummersall, D. V. (2014). Scaling laws of electron confinement and power losses in zero and low beta Polywell devices . (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/13541

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):

Gummersall, David Vaughan. “Scaling laws of electron confinement and power losses in zero and low beta Polywell devices .” 2014. Thesis, University of Sydney. Accessed July 16, 2019. http://hdl.handle.net/2123/13541.

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

MLA Handbook (7^th Edition):

Gummersall, David Vaughan. “Scaling laws of electron confinement and power losses in zero and low beta Polywell devices .” 2014. Web. 16 Jul 2019.

Vancouver:

Gummersall DV. Scaling laws of electron confinement and power losses in zero and low beta Polywell devices . [Internet] [Thesis]. University of Sydney; 2014. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/2123/13541.

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

Council of Science Editors:

Gummersall DV. Scaling laws of electron confinement and power losses in zero and low beta Polywell devices . [Thesis]. University of Sydney; 2014. Available from: http://hdl.handle.net/2123/13541

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

Oregon State University

12. Edgar, Charles Clifton. A logarithmic sweep for sampling oscilloscopes.

Degree: MS, Electrical and Electronics Engineering, 1969, Oregon State University

URL: http://hdl.handle.net/1957/46530

► The use of the exponential-transfer-characteristics of a transistor junction as a means of giving a logarithmic sweep calibration to a sampling oscilloscope is presented. The… (more)

Subjects/Keywords: Cathode ray oscillograph

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APA (6^th Edition):

Edgar, C. C. (1969). A logarithmic sweep for sampling oscilloscopes. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/46530

Chicago Manual of Style (16^th Edition):

Edgar, Charles Clifton. “A logarithmic sweep for sampling oscilloscopes.” 1969. Masters Thesis, Oregon State University. Accessed July 16, 2019. http://hdl.handle.net/1957/46530.

MLA Handbook (7^th Edition):

Edgar, Charles Clifton. “A logarithmic sweep for sampling oscilloscopes.” 1969. Web. 16 Jul 2019.

Vancouver:

Edgar CC. A logarithmic sweep for sampling oscilloscopes. [Internet] [Masters thesis]. Oregon State University; 1969. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/1957/46530.

Council of Science Editors:

Edgar CC. A logarithmic sweep for sampling oscilloscopes. [Masters Thesis]. Oregon State University; 1969. Available from: http://hdl.handle.net/1957/46530

Oregon State University

13. Perkins, Peter Eugene. The design and development of a noncompressing post-deflection acceleration method for cathode-ray tubes.

Degree: MS, Electrical and Electronics Engineering, 1967, Oregon State University

URL: http://hdl.handle.net/1957/47132

► A short history is given of cathode-ray tubes, from the earliest laboratory tubes available during the early 1900's through present day high performance tubes. Special… (more)

Subjects/Keywords: Cathode ray tubes

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APA (6^th Edition):

Perkins, P. E. (1967). The design and development of a noncompressing post-deflection acceleration method for cathode-ray tubes. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/47132

Chicago Manual of Style (16^th Edition):

Perkins, Peter Eugene. “The design and development of a noncompressing post-deflection acceleration method for cathode-ray tubes.” 1967. Masters Thesis, Oregon State University. Accessed July 16, 2019. http://hdl.handle.net/1957/47132.

MLA Handbook (7^th Edition):

Perkins, Peter Eugene. “The design and development of a noncompressing post-deflection acceleration method for cathode-ray tubes.” 1967. Web. 16 Jul 2019.

Vancouver:

Perkins PE. The design and development of a noncompressing post-deflection acceleration method for cathode-ray tubes. [Internet] [Masters thesis]. Oregon State University; 1967. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/1957/47132.

Council of Science Editors:

Perkins PE. The design and development of a noncompressing post-deflection acceleration method for cathode-ray tubes. [Masters Thesis]. Oregon State University; 1967. Available from: http://hdl.handle.net/1957/47132

Uppsala University

14. Rehnlund, David. Nanostructured Cathodes : A step on the path towards a fully interdigitated 3-D microbattery.

Degree: Inorganic Chemistry, 2011, Uppsala University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-169405

► The Li-ion field of battery research has in the latest decades made substantial progress and is seen to be the most promising battery technology… (more)

▼ The Li-ion field of battery research has in the latest decades made substantial progress and is seen to be the most promising battery technology due to the high volume and specific energy densities of Li-ion batteries. However, in order to achieve a battery capable of competing with the energy density of a combustion engine, further research into new electrode materials is required. As the cathode materials are the limiting factor in terms of capacity, this is the main area in need of further research. The introduction of 3-D electrodes brought new hope as the ion transportpath is decreased as well as an increased electrode area leading to an increased capacity. This thesis work has focused on the development of aluminium 3-D current collectors in order to improve the electrode area and shorten the Li-ion transportpath. By using a template assisted electrodeposition technique, nanorods of controlled magnitude and order can be synthesized. Furthermore, the electrodeposition brings excellent possibilities of upscaling for future industrial manufacturing of the batterycells. A polycarbonate template material which showed interesting properties,was used in the electrodeposition of aluminium nanorods. As the template pores were nonhomogeneously ordered a number of nonordered nanorods were expected to arise during the deposition. However, a surplus of nanorods in reference to the template pores was acquired. This behavior was investigated and a hypothesis was formed as to the mechanism of the nanorod formation. In order to achieve acomplete cathode electrode, a coating of an ion host material on the nanorods isneeded. Due to its high capacity and voltage, vanadium oxide was selected. Based on previous work with electrodeposition of V2O5 on platinum, a series of experiments were performed to mimic the deposition on an aluminium sample. Unfortunately, the deposition was unsuccessful as the experimental conditions resulted in aluminium corrosion which in turn made deposition of the cathode material impossible. The pH dependence of the deposition was evaluated and the conclusion was drawn, that electrodeposition of vanadium oxide on aluminium is not possible using this approach.

Subjects/Keywords: Nanostructure; Lithium ion battery; microbattery; cathode

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APA (6^th Edition):

Rehnlund, D. (2011). Nanostructured Cathodes : A step on the path towards a fully interdigitated 3-D microbattery. (Thesis). Uppsala University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-169405

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):

Rehnlund, David. “Nanostructured Cathodes : A step on the path towards a fully interdigitated 3-D microbattery.” 2011. Thesis, Uppsala University. Accessed July 16, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-169405.

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

MLA Handbook (7^th Edition):

Rehnlund, David. “Nanostructured Cathodes : A step on the path towards a fully interdigitated 3-D microbattery.” 2011. Web. 16 Jul 2019.

Vancouver:

Rehnlund D. Nanostructured Cathodes : A step on the path towards a fully interdigitated 3-D microbattery. [Internet] [Thesis]. Uppsala University; 2011. [cited 2019 Jul 16]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-169405.

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

Council of Science Editors:

Rehnlund D. Nanostructured Cathodes : A step on the path towards a fully interdigitated 3-D microbattery. [Thesis]. Uppsala University; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-169405

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

IUPUI

15. Bell, Michaela Elaine. Novel organosulfur cathode materials for advanced lithium batteries.

Degree: 2018, IUPUI

URL: http://hdl.handle.net/1805/15954

►

Indiana University-Purdue University Indianapolis (IUPUI)

Recent innovations in portable electronics, electric vehicles and power generation by wind and solar have expanded the need for effcient… (more)

Subjects/Keywords: Lithium Sulfur Batteries; Cathode Materials; Flexible

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APA (6^th Edition):

Bell, M. E. (2018). Novel organosulfur cathode materials for advanced lithium batteries. (Thesis). IUPUI. Retrieved from http://hdl.handle.net/1805/15954

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):

Bell, Michaela Elaine. “Novel organosulfur cathode materials for advanced lithium batteries.” 2018. Thesis, IUPUI. Accessed July 16, 2019. http://hdl.handle.net/1805/15954.

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

MLA Handbook (7^th Edition):

Bell, Michaela Elaine. “Novel organosulfur cathode materials for advanced lithium batteries.” 2018. Web. 16 Jul 2019.

Vancouver:

Bell ME. Novel organosulfur cathode materials for advanced lithium batteries. [Internet] [Thesis]. IUPUI; 2018. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/1805/15954.

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

Council of Science Editors:

Bell ME. Novel organosulfur cathode materials for advanced lithium batteries. [Thesis]. IUPUI; 2018. Available from: http://hdl.handle.net/1805/15954

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

University of Waterloo

16. Hart, Connor. The Evolving Search for Positive Electrode Host Materials for the Li-S Battery.

Degree: 2015, University of Waterloo

URL: http://hdl.handle.net/10012/9314

► High energy density storage systems are constantly being researched to support the demand for electric vehicles and use for renewable energy systems. One such energy… (more)

▼ High energy density storage systems are constantly being researched to support the demand for electric vehicles and use for renewable energy systems. One such energy storage system of interest is lithium-sulfur batteries which utilize inexpensive, earth-abundant sulfur as the active material. In order to fully realize the potential of Li-S batteries being commercialized, many problems must still be overcome. Among them are: 1) low conductivity of sulfur species, 2) polysulfide redox shuttle in the electrolyte and self-discharge, 3) volume expansion of active material upon cycling, and 4) lithium metal dendrite formation. The work in this thesis will first focus on a diagnostic method that probes ideal characteristics of sulfur host materials, and then focus on a new material that will address the first three problems. The exhaustive search for a material that has a high electronic conductivity to facilitate charge transfer, substantial surface area and pore volume to allow high sulfur loading, and well-suited physical/chemical surface properties to inhibit Sn2- diffusion into the electrolyte is still ongoing. It is vital to find a material with these characteristics, so as to bring the Li-S battery one step closer to commercialization. In the first section of this thesis, a versatile, cost-effective electrochemical analysis strategy is described that determines the specific Sn2- adsorptivity of materials. This analytical method for screening sulfur host materials is based on metrics: a quantitative electro-oxidation reaction provides the value for Sn2- adsorptivity – which coupled with surface area – is correlated to the extent of self-discharge at an intermediate state of discharge during a 5-day cycling protocol. Measurement of nine different materials with varying surface area, and hydrophobicity using the analytical method determined optimum properties for capacity stabilization. In fact, materials (such as MnO2) that have a high surface area and the ability to chemically interact with intermediate polysulfides realized improved long-term cycling performance and mitigated self-discharge. In the second part of this thesis, a positive electrode material is proposed as a sulfur host. Surface thiosulfate groups are known to drastically mitigate polysulfide diffusion through the formation of a polythionate complex which acts as an internal mediator catenating long-chain polysulfides. The presence of the polythionate complex through an extrinsic additive was explored for low-cost carbon materials. In this study, carbon materials which contained functional groups able to form the polythionate complex saw up to 60% reduction in the irreversible capacity loss as a result of self-discharge. With 15 wt% additive, polysulfide adsorptivity increased and excellent long-term cycling was realized with a capacity fade of 0.085% per cycle over 200 cycles. By combining a polysulfide adsorber with a carbon matrix, long-term cycling is realized with a sulfur loading of ~1.5 mg/cm2.

Subjects/Keywords: Li-S Batteries; Energy Storage; Cathode materials

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APA (6^th Edition):

Hart, C. (2015). The Evolving Search for Positive Electrode Host Materials for the Li-S Battery. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/9314

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):

Hart, Connor. “The Evolving Search for Positive Electrode Host Materials for the Li-S Battery.” 2015. Thesis, University of Waterloo. Accessed July 16, 2019. http://hdl.handle.net/10012/9314.

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

MLA Handbook (7^th Edition):

Hart, Connor. “The Evolving Search for Positive Electrode Host Materials for the Li-S Battery.” 2015. Web. 16 Jul 2019.

Vancouver:

Hart C. The Evolving Search for Positive Electrode Host Materials for the Li-S Battery. [Internet] [Thesis]. University of Waterloo; 2015. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/10012/9314.

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

Council of Science Editors:

Hart C. The Evolving Search for Positive Electrode Host Materials for the Li-S Battery. [Thesis]. University of Waterloo; 2015. Available from: http://hdl.handle.net/10012/9314

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

University of Waterloo

17. Raimbault, Justin. Na0.66(Ni0.13Mn0.54Co0.13)O2 Cathode Coated with Alucone by Molecular Layer Deposition for Sodium Ion Batteries.

Degree: 2018, University of Waterloo

URL: http://hdl.handle.net/10012/13596

► The importance of batteries has skyrocketed in the twentieth century due to an impending energy crisis arising from a dependence on fossil fuels. Global warming… (more)

▼ The importance of batteries has skyrocketed in the twentieth century due to an impending energy crisis arising from a dependence on fossil fuels. Global warming has alerted the world to the environmental dangers of fossil fuel reliance and has spurred the development of clean energy sources. Clean energy sources are often less predictable and controllable than fossil fuel energy and require a means of storing energy until its use is required. The spreading growth of the electric vehicle industry has also spurred much research into high-performance batteries. Thus, batteries play an integral role in our everyday lives and are required for an environmentally-conscious future. Lithium ion batteries currently dominate the portable battery industry due to their long lifetime, good capacity, and wide operating window. However, mineable sources of lithium are unsustainable in the long term and their expense, combined with the expense of the cobalt used in commercial cathodes, is a major barrier to widespread adaption of batteries for energy storage and electric vehicles. On the other hand, sodium is much more abundant and inexpensive than lithium, and its electrochemical behaviours are very similar to those of lithium. Thus, much time and effort are being invested into developing sodium ion batteries (SIBs) to replace lithium ion batteries. One problem with many sodium ion battery cathodes is their instability at high voltages. These cathode materials undergo a phase change above 4.3 V which limits their energy density. To solve this problem, a coating can be applied to the cathode particles which prevents side reactions with the electrolyte, dissolution of active materials, and breakdown due to volume changes. Several coating methods could be used to accomplish this, but only atomic/molecular layer deposition can create the ultrathin, homogeneous, and defect-free coatings necessary for high performance SIBs. This thesis work investigates the effect of coating alucone, an alumina containing ethane linkers, deposited by molecular layer deposition on the SIB cathode Na0.66(Ni0.13Mn0.54Co0.13)O2 (NaNMC). This work also details the optimization of the NaNMC cathode with regards to annealing temperature and chelating agent addition. The research described in this thesis shows that an annealing temperature of 850 °C produced the purest crystal structure as observed from XRD and by testing its electrochemical performance. The addition of a chelating agent stabilized the metal ions in solution during synthesis and decreased the agglomeration of the particles after annealing. Specifically, the addition of citric aid resulted in the highest capacity and rate performance when the synthesized cathode material was fabricated into a coin cell, compared to other chelating agents tested. After the optimization of the cathode material was completed, 5, 10, or 20 layers of alucone were coated onto assembled cathodes and their performance at a higher voltage of 4.5 V was compared to a pristine cathode of the same material. The…

Subjects/Keywords: sodium ion battery; molecular layer deposition; cathode

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APA (6^th Edition):

Raimbault, J. (2018). Na0.66(Ni0.13Mn0.54Co0.13)O2 Cathode Coated with Alucone by Molecular Layer Deposition for Sodium Ion Batteries. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/13596

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):

Raimbault, Justin. “Na0.66(Ni0.13Mn0.54Co0.13)O2 Cathode Coated with Alucone by Molecular Layer Deposition for Sodium Ion Batteries.” 2018. Thesis, University of Waterloo. Accessed July 16, 2019. http://hdl.handle.net/10012/13596.

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

MLA Handbook (7^th Edition):

Raimbault, Justin. “Na0.66(Ni0.13Mn0.54Co0.13)O2 Cathode Coated with Alucone by Molecular Layer Deposition for Sodium Ion Batteries.” 2018. Web. 16 Jul 2019.

Vancouver:

Raimbault J. Na0.66(Ni0.13Mn0.54Co0.13)O2 Cathode Coated with Alucone by Molecular Layer Deposition for Sodium Ion Batteries. [Internet] [Thesis]. University of Waterloo; 2018. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/10012/13596.

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

Council of Science Editors:

Raimbault J. Na0.66(Ni0.13Mn0.54Co0.13)O2 Cathode Coated with Alucone by Molecular Layer Deposition for Sodium Ion Batteries. [Thesis]. University of Waterloo; 2018. Available from: http://hdl.handle.net/10012/13596

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

University of Wollongong

18. Idris, Nurul Hayati. Advanced materials for lithium rechargeable battery.

Degree: PhD, Faculty of Engineering, 2011, University of Wollongong

URL: ; https://ro.uow.edu.au/theses/3492

► Due to the rapid increase in the use of portable computers, mobile phones, and electric vehicles, there is an increasing demand for larger capacity,… (more)

▼ Due to the rapid increase in the use of portable computers, mobile phones, and electric vehicles, there is an increasing demand for larger capacity, smaller size, lighter weight and lower priced rechargeable batteries. Lithium ion battery technology offers the highest energy densities by weight of all the commercial rechargeable battery technologies, with high voltage, long cycle life, and a wide environmental operation range. Commercial lithium ion battery electrodes today contain expensive and hazardous cathode (lithium cobalt oxide) and low specific capacity anode (carbonaceous materials). It is desirable to replace these materials with potentially cheaper, less toxic materials that have high specific capacity. In this doctoral work, several nanostructured materials and nanocomposites were examined and characterized as potential electrode material in lithium storage applications. In an attempt to improve the performance of nickel oxide (NiO), NiO-polypyrrole (PPy) and NiO-graphene nanocomposite were prepared and investigated as possible anode materials. Meanwhile, several cathode materials were studied: LiV₃O₈/carbon nanocomposite and nickel sulfide (NiS). The superior performance of poly(vinylidene fluoride)/poly(methyl methacrylate) (PVDF/PMMA) gel polymer electrolyte in lithium-polymer batteries was also demonstrated. NiO-PPy nanocomposites for lithium-ion batteries were prepared by a chemical polymerization method, with sodium p-toluenesulfonate as the dopant, Triton X-100 as the surfactant, and FeCl3 as the oxidant. The new composite material was characterized by Raman spectroscopy, thermogravimetric analysis (TGA), scanning electronmicroscopy (SEM), and field-emission scanning electron microscopy (FESEM). Nanosize conducting PPy particles with a cauliflower-like morphology were uniformly coated onto the surface of the NiO powder. The electrochemical results were improved for the NiO-PPy composite compared with the pristine NiO. After 30 cycles, the capacities of the NiO and the NiO-PPy composite were about 119 and 436 mAh g^-1, respectively, indicating that the electrochemical performance of the composite was significantly improved. Graphene-metal-oxide composites as anode materials for Li-ion batteries have been investigated extensively, but these attempts have been mostly limited to moderate rate charge-discharge applications. Here, NiO-graphene nanostructures have been synthesized using a controlled hydrothermal method, which enables in situ formation of NiO with a coralloid nanostructure on graphene. Graphene/NiO (20%), graphene/NiO (50%), and pure NiO show stable discharge capacities of 185 mAh g^-1 at 20 C (1 C = 300 mA g^-1), 450 mAh g^-1 at 1 C, and 400 mAh g^-1 at 1 C, respectively. High rate capability and good stability in prolonged charge-discharge cycling permit the application of this material in fast charging batteries for upcoming electric vehicles. To the best of our knowledge, such fast rate performance…

Subjects/Keywords: lithium-ion; solid polymer electrolytes; cathode; anode

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APA (6^th Edition):

Idris, N. H. (2011). Advanced materials for lithium rechargeable battery. (Doctoral Dissertation). University of Wollongong. Retrieved from ; https://ro.uow.edu.au/theses/3492

Chicago Manual of Style (16^th Edition):

Idris, Nurul Hayati. “Advanced materials for lithium rechargeable battery.” 2011. Doctoral Dissertation, University of Wollongong. Accessed July 16, 2019. ; https://ro.uow.edu.au/theses/3492.

MLA Handbook (7^th Edition):

Idris, Nurul Hayati. “Advanced materials for lithium rechargeable battery.” 2011. Web. 16 Jul 2019.

Vancouver:

Idris NH. Advanced materials for lithium rechargeable battery. [Internet] [Doctoral dissertation]. University of Wollongong; 2011. [cited 2019 Jul 16]. Available from: ; https://ro.uow.edu.au/theses/3492.

Council of Science Editors:

Idris NH. Advanced materials for lithium rechargeable battery. [Doctoral Dissertation]. University of Wollongong; 2011. Available from: ; https://ro.uow.edu.au/theses/3492

University of Wollongong

19. Li, Dan. Preparation and electrochemical properties of nanostructured electrode materials for lithium ion batteries.

Degree: PhD, 2014, University of Wollongong

URL: ; https://ro.uow.edu.au/theses/4370

► Lithium ion batteries (LIBs) have been regarded as the most successful electrochemical power sources for a wide range of applications, including consumer devices, portable… (more)

Subjects/Keywords: Nanostructure; Anode; Cathode; Lithium ion batteries

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

APA (6^th Edition):

Li, D. (2014). Preparation and electrochemical properties of nanostructured electrode materials for lithium ion batteries. (Doctoral Dissertation). University of Wollongong. Retrieved from ; https://ro.uow.edu.au/theses/4370

Chicago Manual of Style (16^th Edition):

Li, Dan. “Preparation and electrochemical properties of nanostructured electrode materials for lithium ion batteries.” 2014. Doctoral Dissertation, University of Wollongong. Accessed July 16, 2019. ; https://ro.uow.edu.au/theses/4370.

MLA Handbook (7^th Edition):

Li, Dan. “Preparation and electrochemical properties of nanostructured electrode materials for lithium ion batteries.” 2014. Web. 16 Jul 2019.

Vancouver:

Li D. Preparation and electrochemical properties of nanostructured electrode materials for lithium ion batteries. [Internet] [Doctoral dissertation]. University of Wollongong; 2014. [cited 2019 Jul 16]. Available from: ; https://ro.uow.edu.au/theses/4370.

Council of Science Editors:

Li D. Preparation and electrochemical properties of nanostructured electrode materials for lithium ion batteries. [Doctoral Dissertation]. University of Wollongong; 2014. Available from: ; https://ro.uow.edu.au/theses/4370

University of Connecticut

20. Lassman, Alexander M. Evaluation of Cathode Materials for Low Temperature (500-700C) Solid Oxide Fuel Cells.

Degree: MS, Mechanical Engineering, 2011, University of Connecticut

URL: https://opencommons.uconn.edu/gs_theses/196

► <a></a>Solid oxide fuel cells (SOFC) have gained a great deal of interest, due to their potential for high efficiency power generation and ability to… (more)

▼ <a></a>Solid oxide fuel cells (SOFC) have gained a great deal of interest, due to their potential for high efficiency power generation and ability to utilize hydrogen fuel, as well as various hydrocarbon-based fuels. A recent trend in SOFC development has been towards lower operating temperatures (500-700°C), which can substantially reduce the cost and complexity of the system. This thesis presents an investigation into state of the art Ba- and La- based cathode materials for use in low temperature (500-700°C) solid oxide fuel cells. Synthesis of A-site deficient [A=0.97] Ba_0.5Sr_0.5Co_0.8Fe_0.2O₃ (BSCF) was accomplished by the EDTA-citrate method. This powder was compared against a commercially available La_0.6Sr_0.4Co_0.2Fe_0.8O₃ (LSCF) powder used as a reference. The phase structure and morphology of the powders was characterized using XRD analysis, SEM imaging, and BET surface area analysis. Thermal expansion and thermogravimetric measurements were performed to characterize the chemical and mechanical properties of the powders up to 800°C. The powders were also found to develop a secondary surface phase after exposure to ambient air at room temperature for as little as 100h. This phase was attributed to surface A-site carbonate formation due to exposure to atmospheric CO₂. Symmetric cells were prepared and electrochemically characterized using AC impedance spectroscopy in a range of 500-700°C, and a PO₂ of 1.0-0.01 atm. The BSCF was found to have a ~7x lower ASR than LSCF at 600°C (0.4 Ωcm² vs. 2.95 Ωcm² at 600°C). The impedance spectra were modeled using an equivalent circuit model, and three distinct processes were identified. These processes were ultimately attributed to a charge transfer process, a surface exchange process, and a gas diffusion process. Using the calculated PO₂ and temperature dependencies, a model was proposed to explain the mechanism behind the oxygen reduction reaction on the BSCF cathode. It was found that below 600°C, the primary mechanism is partial reduction of the gaseous oxygen, possibly followed by surface diffusion. Above 600°C, the gaseous oxygen is completely reduced and incorporated into the bulk of the cathode, where it undergoes bulk diffusion to the cathode/electrolyte interface. Advisors/Committee Members: Ugur Pasaogullari, Gary L. McVay, Atul Verma, Leon Shaw, Prabhakar Singh.

Subjects/Keywords: solid oxide fuel cell; cathode; BSCF

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

APA (6^th Edition):

Lassman, A. M. (2011). Evaluation of Cathode Materials for Low Temperature (500-700C) Solid Oxide Fuel Cells. (Masters Thesis). University of Connecticut. Retrieved from https://opencommons.uconn.edu/gs_theses/196

Chicago Manual of Style (16^th Edition):

Lassman, Alexander M. “Evaluation of Cathode Materials for Low Temperature (500-700C) Solid Oxide Fuel Cells.” 2011. Masters Thesis, University of Connecticut. Accessed July 16, 2019. https://opencommons.uconn.edu/gs_theses/196.

MLA Handbook (7^th Edition):

Lassman, Alexander M. “Evaluation of Cathode Materials for Low Temperature (500-700C) Solid Oxide Fuel Cells.” 2011. Web. 16 Jul 2019.

Vancouver:

Lassman AM. Evaluation of Cathode Materials for Low Temperature (500-700C) Solid Oxide Fuel Cells. [Internet] [Masters thesis]. University of Connecticut; 2011. [cited 2019 Jul 16]. Available from: https://opencommons.uconn.edu/gs_theses/196.

Council of Science Editors:

Lassman AM. Evaluation of Cathode Materials for Low Temperature (500-700C) Solid Oxide Fuel Cells. [Masters Thesis]. University of Connecticut; 2011. Available from: https://opencommons.uconn.edu/gs_theses/196

University of Newcastle

21. Jones, Timothy William. Prospecting for advanced battery materials.

Degree: PhD, 2010, University of Newcastle

URL: http://hdl.handle.net/1959.13/807524

►

Research Doctorate - Doctor of Philosophy (PhD)

Modern society is highly dependent on portable power sources to power portable electronic devices (laptop computers, mobile phones… (more)

Subjects/Keywords: battery cathode; primary; alkaline; copper oxide; secondary

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APA (6^th Edition):

Jones, T. W. (2010). Prospecting for advanced battery materials. (Doctoral Dissertation). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/807524

Chicago Manual of Style (16^th Edition):

Jones, Timothy William. “Prospecting for advanced battery materials.” 2010. Doctoral Dissertation, University of Newcastle. Accessed July 16, 2019. http://hdl.handle.net/1959.13/807524.

MLA Handbook (7^th Edition):

Jones, Timothy William. “Prospecting for advanced battery materials.” 2010. Web. 16 Jul 2019.

Vancouver:

Jones TW. Prospecting for advanced battery materials. [Internet] [Doctoral dissertation]. University of Newcastle; 2010. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/1959.13/807524.

Council of Science Editors:

Jones TW. Prospecting for advanced battery materials. [Doctoral Dissertation]. University of Newcastle; 2010. Available from: http://hdl.handle.net/1959.13/807524

Colorado State University

22. Edelen, Jonathan Paul. Theory and mitigation of electron back-bombardment in thermionic cathode radio frequency guns.

Degree: PhD, Electrical and Computer Engineering, 2015, Colorado State University

URL: http://hdl.handle.net/10217/167135

► Photocathode RF guns are currently the standard for high- power, low-emittance beam generation in free-electron lasers. These devices require the use of high-power lasers (which… (more)

▼ Photocathode RF guns are currently the standard for high- power, low-emittance beam generation in free-electron lasers. These devices require the use of high-power lasers (which are bulky and expensive to operate) and high-quantum-efficiency cathodes (which have limited lifetimes requiring frequent replacement). The use of RF-gated thermionic cathodes enables operation without a large drive laser and with long lifetimes. One major limitation of RF-gated thermionic cathodes is that electrons emitted late in the RF period will not gain enough energy to exit the gun before being accelerated back towards the cathode by the change in sign of the RF field. These electrons deposit their kinetic energy on the cathode surface in the form of heat, limiting the ability to control the output current from the cathode. This dissertation is aimed at understanding the fundamental design factors that drive the back-bombardment process and at exploring novel techniques to reduce its impact on a high-current system. This begins with the development of analytic models that predict the back-bombardment process in single-cell guns. These models are compared with simulation and with a measurement taken at a specific facility. This is followed by the development of analytic models that predict the effects of space-charge on back-bombardment. These models are compared with simulations. This is followed by an analysis of how the addition of multiple cells will impact the back-bombardment process. Finally, a two-frequency gun is studied for its ability to mitigate the back-bombardment process. This dissertation provides new insight on how the back-bombardment process scales as a function of the beam parameters and how space-charge affects this process. Additionally this dissertation shows how a second frequency can be used to mitigate the back-bombardment effect. Advisors/Committee Members: Milton, Stephen (advisor), Biedron, Sandra (advisor), Notaros, Branislav (committee member), Johnson, Thomas (committee member).

Subjects/Keywords: particle accelerator; electron gun; thermionic cathode

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APA (6^th Edition):

Edelen, J. P. (2015). Theory and mitigation of electron back-bombardment in thermionic cathode radio frequency guns. (Doctoral Dissertation). Colorado State University. Retrieved from http://hdl.handle.net/10217/167135

Chicago Manual of Style (16^th Edition):

Edelen, Jonathan Paul. “Theory and mitigation of electron back-bombardment in thermionic cathode radio frequency guns.” 2015. Doctoral Dissertation, Colorado State University. Accessed July 16, 2019. http://hdl.handle.net/10217/167135.

MLA Handbook (7^th Edition):

Edelen, Jonathan Paul. “Theory and mitigation of electron back-bombardment in thermionic cathode radio frequency guns.” 2015. Web. 16 Jul 2019.

Vancouver:

Edelen JP. Theory and mitigation of electron back-bombardment in thermionic cathode radio frequency guns. [Internet] [Doctoral dissertation]. Colorado State University; 2015. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/10217/167135.

Council of Science Editors:

Edelen JP. Theory and mitigation of electron back-bombardment in thermionic cathode radio frequency guns. [Doctoral Dissertation]. Colorado State University; 2015. Available from: http://hdl.handle.net/10217/167135

University of Southern California

23. Rong, Jiepeng. Nanostructured silicon anode and sulfur cathode for lithium rechargeable batteries.

Degree: PhD, Materials Science, 2015, University of Southern California

URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/526687/rec/4321

► Silicon and sulfur are both attractive electrode materials for next-generation rechargeable lithium batteries because of their abundance, high specific capacity, and low cost. This thesis… (more)

▼ Silicon and sulfur are both attractive electrode materials for next-generation rechargeable lithium batteries because of their abundance, high specific capacity, and low cost. This thesis is mainly focused on the research progress I made on silicon-based anode materials and sulfur-based cathode materials for rechargeable lithium batteries with improved energy density, power density, and cycle life. ❧ In Chapter 1, the working mechanism of lithium-ion battery, and commercial anode/cathode materials are introduced, which serve as the background information for the following chapters. Then in Chapter 2, the research progress I made in silicon-based anode is presented. To tackle with the problems of silicon anode, such as poor cyclability and early capacity fading due to significant volume change during lithiation and delithiation process, I fabricated a coaxial silicon / anodic titanium oxide / silicon (Si-ATO-Si) nanotube array structure grown on titanium substrate demonstrating excellent electrochemical cyclability. The ATO nanotube scaffold used for Si deposition has many desired features, such as rough surface for enhanced Si adhesion, and direct contact with the Ti substrate working as current collector. More importantly, the ATO scaffold provides a rather unique advantage that Si can be loaded on both the inner and outer surfaces, and an inner pore can be maintained to provide room for Si volume expansion. This coaxial structure shows a capacity above 1500mAh/g after 100 cycles, with less than 0.05% decay per cycle. ❧ In Chapter 3 and Chapter 4, two kinds of sulfur-based cathode materials are reported. In Chapter 3, a generic and facile method of coating graphene oxide (GO) on sulfur particles is presented. The applications of sulfur/GO core-shell particles as Li-S battery cathode materials are further investigated and the results show that sulfur/GO exhibit significant improvements over bare sulfur particles without coating. Galvanic charge-discharge test using GO/sulfur particles shows a specific capacity of 800 mAh/g is retained after 1000 cycles at 1 A/g current rate if only the mass of sulfur is taken into calculation, and 400 mAh/g if the total mass of sulfur/GO is considered. Most importantly, the capacity decay over 1000 cycles is less than 0.02% per cycle. The coating method developed in this study is facile, robust, and versatile, and is expected to have wide range of applications in improving the properties of particle materials. ❧ In Chapter 4, in order to further improve the power density of sulfur-based cathode material, a method of fabricating graphene oxide (GO) wrapped porous carbon/sulfur composite (porous C-S) for high performance lithium-sulfur (Li-S) battery cathode material is reported. A porous C-S composite using conductive porous carbon as framework and sulfur within its channels as filler is synthesized to generate essential electrical contact to the insulating sulfur, thus achieving high specific capacity. Further graphene oxide wrapping over porous C-S is used to mitigate the problem of… Advisors/Committee Members: Zhou, Chongwu (Committee Chair), Goo, Edward K. (Committee Member), Wu, Wei (Committee Member).

Subjects/Keywords: lithium rechargeable batteries; silicon anode; sulfur cathode

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APA (6^th Edition):

Rong, J. (2015). Nanostructured silicon anode and sulfur cathode for lithium rechargeable batteries. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/526687/rec/4321

Chicago Manual of Style (16^th Edition):

Rong, Jiepeng. “Nanostructured silicon anode and sulfur cathode for lithium rechargeable batteries.” 2015. Doctoral Dissertation, University of Southern California. Accessed July 16, 2019. http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/526687/rec/4321.

MLA Handbook (7^th Edition):

Rong, Jiepeng. “Nanostructured silicon anode and sulfur cathode for lithium rechargeable batteries.” 2015. Web. 16 Jul 2019.

Vancouver:

Rong J. Nanostructured silicon anode and sulfur cathode for lithium rechargeable batteries. [Internet] [Doctoral dissertation]. University of Southern California; 2015. [cited 2019 Jul 16]. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/526687/rec/4321.

Council of Science Editors:

Rong J. Nanostructured silicon anode and sulfur cathode for lithium rechargeable batteries. [Doctoral Dissertation]. University of Southern California; 2015. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/526687/rec/4321

24. Sabaut, Lucie. Cathode commutable à nanotubes de carbone pour tube à rayons X : Development of carbon nanotube based gated cathodes for X-ray tubes.

Degree: Docteur es, Physique, 2016, Paris Saclay

URL: http://www.theses.fr/2016SACLX078

►

Les systèmes d'imagerie à rayons X (RX) sont des appareils volumineux et contraignants en termes de contrôle du faisceau. L'industrie des tubes électroniques est donc… (more)

▼

Les systèmes d'imagerie à rayons X (RX) sont des appareils volumineux et contraignants en termes de contrôle du faisceau. L'industrie des tubes électroniques est donc à la recherche de solutions pour assurer la stabilité du courant tout en permettant la miniaturisation du système.Ce travail opte pour l'amélioration de la source d'électrons, en remplaçant l'émission thermoïonique historique par l'émission de champ. En particulier, les cathodes froides à base de nanotubes de carbone possèdent l'avantage de pouvoir délivrer de forts courants (>1A/cm²), tout en ayant un faible temps de réponse.A travers le développement d'une structure innovante de cathodes à nanotubes de carbone à grille intégrée, l'objectif de cette étude est de réaliser des sources commutables et régulées, pour des sources de rayons X miniatures, portables ou polyvalentes.La modélisation électrostatique de la nouvelle structure a conduit à la fabrication de cathodes à grille optimisées, sur lesquelles est cru un réseau vertical de nanotubes de carbone. L'analyse de défaillance permet finalement d'obtenir des dispositifs isolés fiables. Leur caractérisation en émission de champ indique des performances de modulation de courant inégalées, de l'ordre de 10⁶ pour +/-40V de polarisation de grille. La régulation du courant a également été démontrée avec l'obtention d'une stabilité à 0,02% sur 100 h.Pour pallier les limitations rencontrées (courant de fuite et croissance parasite), une structure de grille enterrée a été proposée avec succès, ainsi qu'une nouvelle méthode de fabrication d'émetteurs courts et fins. Ces cathodes fonctionnelles ont finalement été intégrées en tube à rayons X et ont montré pour la première fois une modulation de courant de 2000 à une haute tension fixe de 60 kV.

This work chooses to improve the electron source by replacing thermionic emission with field emission. More especially, carbon nanotubes based cold cathodes stand out by their ability to supply high currents (>1A/cm²) while responding fast.Through the development of an innovative structure of in-plane gated carbon nanotube based cathode, this study aims at making switchable and regulated sources for miniature, portable or polyvalent X-rays sources.The electrostatic modelling of the new structure led to the fabrication of optimized gated cathodes, where a vertically aligned array of carbon nanotubes is grown. Default analysis allows to get reliable insulated devices.Field emission characterization shows unprecedented current modulation of 10⁶ at +/-40V bias voltage. Current regulation is also achieved with a stability of 0.02% over 100 h.Another structure with a burried gate electrode was designed to successfully cope with leak current and parasitic growth. A new way of growing short and thin nanotubes was tackled.Finally, gated cathodes were integrated in a compact X-ray tube and showed a current modulation of 2000 at a high voltage of 60 kV.

Advisors/Committee Members: Maurice, Jean-Luc (thesis director).

Subjects/Keywords: Cathode froide; Émission de champ; Nanotube de carbone; Cathode à grille; Modulation; Tube électronique; Cold cathode; Field emission; Carbon nanotube; Gated cathode; Modulation; Vacuum tube

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

APA (6^th Edition):

Sabaut, L. (2016). Cathode commutable à nanotubes de carbone pour tube à rayons X : Development of carbon nanotube based gated cathodes for X-ray tubes. (Doctoral Dissertation). Paris Saclay. Retrieved from http://www.theses.fr/2016SACLX078

Chicago Manual of Style (16^th Edition):

Sabaut, Lucie. “Cathode commutable à nanotubes de carbone pour tube à rayons X : Development of carbon nanotube based gated cathodes for X-ray tubes.” 2016. Doctoral Dissertation, Paris Saclay. Accessed July 16, 2019. http://www.theses.fr/2016SACLX078.

MLA Handbook (7^th Edition):

Sabaut, Lucie. “Cathode commutable à nanotubes de carbone pour tube à rayons X : Development of carbon nanotube based gated cathodes for X-ray tubes.” 2016. Web. 16 Jul 2019.

Vancouver:

Sabaut L. Cathode commutable à nanotubes de carbone pour tube à rayons X : Development of carbon nanotube based gated cathodes for X-ray tubes. [Internet] [Doctoral dissertation]. Paris Saclay; 2016. [cited 2019 Jul 16]. Available from: http://www.theses.fr/2016SACLX078.

Council of Science Editors:

Sabaut L. Cathode commutable à nanotubes de carbone pour tube à rayons X : Development of carbon nanotube based gated cathodes for X-ray tubes. [Doctoral Dissertation]. Paris Saclay; 2016. Available from: http://www.theses.fr/2016SACLX078

25. Dumaisnil, Kévin. Élaboration et caractérisations de matériaux de cathode et d'électrolyte pour pile à combustible à oxyde solide : Elaboration and characterization of cathode and electrolyte materials for solid oxide fuel cell.

Degree: Docteur es, Science des matériaux, 2015, Littoral

URL: http://www.theses.fr/2015DUNK0396

►

L'énergie produite par des matières fossiles, pétrole et charbon, va se raréfier de manière inéluctable et couter de plus en plus cher à moyen terme.… (more)

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L'énergie produite par des matières fossiles, pétrole et charbon, va se raréfier de manière inéluctable et couter de plus en plus cher à moyen terme. Pour pallier à la fin des matières fossiles, le développement d'énergies alternatives est indispensable. Parmi celles-ci, la production d'électricité et de chaleur à partir d'hydrogène commence à se développer grâce aux piles à combustible (PAC) depuis les très faibles puissances (des microwatts pour alimenter les capteurs) jusqu'aux fortes puissances (des Mégawatts pour l'industrie) en passant par des puissances moyennes (des kilowatts pour le résidentiel). Une PAC est constituée de 3 éléments : 2 électrodes (anode et cathode) séparées par un électrolyte. Dans cette thèse, ces 3 éléments sont constitués d'oxydes solides et la pile est appelée SOFC (Solid Oxide Fuel Cell). Les piles SOFC actuellement commercialisées fonctionnent à de très hautes températures, typiquement supérieures à 800°C. L'objectif du travail a été d'élaborer des oxydes pour diminuer cette température vers 600°C ce qui permet d'utiliser de l'acier pour contenir ces piles. Pour que la pile SOFC fonctionne à cette température, il est impératif de diminuer la résistance électrique des 2 électrodes et de l'électrolyte de manière à récupérer une tension électrique continue maximale aux bornes de la pile et aussi à faire passer un courant électrique élevé dans celle-ci. La cathode, en contact avec l'oxygène de l'air, est l'élément le plus critique à optimiser. Nous avons choisi comme matériau de cathode un matériau déjà étudié, La₀.₆Sr₀.₄Co₀.₈Fe₀.₂O₃ (LSCF) et comme électrolyte Ce₀.₉Gd₀.₁O₂ (CGO) connu comme performant en dessous de 650 °C. Nous avons élaboré ces matériaux par une méthode de chimie douce, la méthode sol-gel Péchini, et caractérisé ceuxi-ci par diffraction de rayons X et microscopie électronique à balayage. Une part importante du travail a été la caractérisation électrique à l'aide de mesures d'impédance complexe dans une large gamme de fréquence (0,05 Hz à 2 MHz) et de température (300°C à 700 °C). Le meilleur résultat a été obtenu avec une cathode composite poreuse d'épaisseur 40 µm constituée à masses égales de LSCF et de CGO déposée par sérigraphie sur une céramique dense de CGO d'épaisseur 1,5 mm. De plus, un film mince dense de LSCF d'épaisseur 0,1 µm environ a été déposé par centrifugation pour améliorer l'interface entre la cathode et l'électrolyte. À 600 °C la résistance de cette cathode a été mesurée à 0,13 Ω pour 1 cm² de cathode : cette valeur est à l'état de l'art. Une étude du vieillissement de cette cathode et de l'électrolyte a été effectuée à 600 °C pendant 1000 h en continu sous air : cela s'est traduit par une augmentation de la résistance de la cathode de 32%. Ceci peut être lié à la différence de valeurs des coefficients d'expansion thermique des matériaux de cathode et d'électrolyte.

Energy made from fossil fuels, oil or coal, is becoming increasingly rare and its price will increase in the near future. Developing alternative energy sources could compensate the use…

Advisors/Committee Members: Carru, Jean-Claude (thesis director), Fasquelle, Didier (thesis director).

Subjects/Keywords: Sofc; Cathode; Lscf; Mesure de spectroscopie d'impédance complexe; Pechini; Etude interface cathode-électrolyte; Sofc; Cathode; Lscf; Electrochemical impedance spectroscopy; Pechini; Cathode-electrolyte interface

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

APA (6^th Edition):

Dumaisnil, K. (2015). Élaboration et caractérisations de matériaux de cathode et d'électrolyte pour pile à combustible à oxyde solide : Elaboration and characterization of cathode and electrolyte materials for solid oxide fuel cell. (Doctoral Dissertation). Littoral. Retrieved from http://www.theses.fr/2015DUNK0396

Chicago Manual of Style (16^th Edition):

Dumaisnil, Kévin. “Élaboration et caractérisations de matériaux de cathode et d'électrolyte pour pile à combustible à oxyde solide : Elaboration and characterization of cathode and electrolyte materials for solid oxide fuel cell.” 2015. Doctoral Dissertation, Littoral. Accessed July 16, 2019. http://www.theses.fr/2015DUNK0396.

MLA Handbook (7^th Edition):

Dumaisnil, Kévin. “Élaboration et caractérisations de matériaux de cathode et d'électrolyte pour pile à combustible à oxyde solide : Elaboration and characterization of cathode and electrolyte materials for solid oxide fuel cell.” 2015. Web. 16 Jul 2019.

Vancouver:

Dumaisnil K. Élaboration et caractérisations de matériaux de cathode et d'électrolyte pour pile à combustible à oxyde solide : Elaboration and characterization of cathode and electrolyte materials for solid oxide fuel cell. [Internet] [Doctoral dissertation]. Littoral; 2015. [cited 2019 Jul 16]. Available from: http://www.theses.fr/2015DUNK0396.

Council of Science Editors:

Dumaisnil K. Élaboration et caractérisations de matériaux de cathode et d'électrolyte pour pile à combustible à oxyde solide : Elaboration and characterization of cathode and electrolyte materials for solid oxide fuel cell. [Doctoral Dissertation]. Littoral; 2015. Available from: http://www.theses.fr/2015DUNK0396

Cornell University

26. Lee, Hyeri. For brighter electron sources: a cryogenically cooled photocathode and DC photogun .

Degree: 2017, Cornell University

URL: http://hdl.handle.net/1813/56734

► Electron beams produced by photoinjectors have a wide range of applications including colliders for high energy and nuclear physics experiments, Free Electron Lasers (FEL), Energy… (more)

Subjects/Keywords: Physics; bright electron beam; cryogenic cathode; photoemission; photoemission gun; transmission cathode; ultrafast electron diffraction

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APA (6^th Edition):

Lee, H. (2017). For brighter electron sources: a cryogenically cooled photocathode and DC photogun . (Thesis). Cornell University. Retrieved from http://hdl.handle.net/1813/56734

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):

Lee, Hyeri. “For brighter electron sources: a cryogenically cooled photocathode and DC photogun .” 2017. Thesis, Cornell University. Accessed July 16, 2019. http://hdl.handle.net/1813/56734.

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

MLA Handbook (7^th Edition):

Lee, Hyeri. “For brighter electron sources: a cryogenically cooled photocathode and DC photogun .” 2017. Web. 16 Jul 2019.

Vancouver:

Lee H. For brighter electron sources: a cryogenically cooled photocathode and DC photogun . [Internet] [Thesis]. Cornell University; 2017. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/1813/56734.

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

Council of Science Editors:

Lee H. For brighter electron sources: a cryogenically cooled photocathode and DC photogun . [Thesis]. Cornell University; 2017. Available from: http://hdl.handle.net/1813/56734

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

University of Dayton

27. Garlapati, Vasisht. Development of High Performance Air-Cathodes for Solid State Lithium-Air Cells.

Degree: MS(M.S.), Mechanical Engineering, 2010, University of Dayton

URL: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1269636615

► A solid state lithium-air battery is receiving considerable attention by the battery community recently. A challenging part of making a solid state lithium-air battery… (more)

▼ A solid state lithium-air battery is receiving considerable attention by the battery community recently. A challenging part of making a solid state lithium-air battery is to develop a solid state air-cathode. The present study relates to the development of the air-cathode. The air-cathode consists of a lithium ion conducting material, electron conducting material, metal substrate, binder and dispersant. For lithium ion conduction Lithium aluminum germanium phosphate (LAGP) glass-ceramic powder was used. For electron conduction two types of carbon were used. One type of carbon help in providing better electron conductivity and the other type of carbon helps in pore formation in the cathode. Nickel mesh/foam was used for structural support and current collection. Polytetrafluoroethylene (PTFE) was used to bind LAGP and carbon. Dispersant was used for preventing LAGP and carbon powders from agglomerating. The investigation includes evaluation of processing parameters including the effect of LAGP or dispersant concentration on the rate capacity. LAGP glass was prepared at 1350°C and crystallized at 850°C for 12 hours to transform it into a glass- ceramic. The cathodes prepared from the batch materials and processed were characterized to determine porosity, surface area, pore size and volume. To evaluate the electrochemical properties of these cathodes twelve lithium-air cells were fabricated and tested in the temperature range 45 – 115°C and were characterized using a Solartron 1260 impedance analyzer with 1287 electrochemical interface in oxygen atmosphere under 1 kPa pressure. It was determined that the use of dispersant helped the cathode obtain a porosity of 22% which is due to the proper dispersion of LAGP in cathode. A dispersant concentration of 5.92 wt% helped the cell discharge at a voltage of 2.5 V for 35 hours and achieved a capacity of 14.1 mAh at 75°C. LAGP concentration of 90 wt% helped in discharging the cell with a current of 0.50 mA for 13 hours at 75°C. The enhanced capacity of the cell is attributed to the catalyzing effect of LAGP for oxygen reduction. A capacity of 8.76 mAh was obtained at 67°C by having nickel foam side exposed to oxygen flow. The capacity was obtained because of the better oxygen transport inside the cathode. Advisors/Committee Members: Kumar, Dr. Binod (Committee Chair).

Subjects/Keywords: Materials Science; Mechanical Engineering; cathode; lithium-air cell; solid state; air cathode

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APA (6^th Edition):

Garlapati, V. (2010). Development of High Performance Air-Cathodes for Solid State Lithium-Air Cells. (Masters Thesis). University of Dayton. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=dayton1269636615

Chicago Manual of Style (16^th Edition):

Garlapati, Vasisht. “Development of High Performance Air-Cathodes for Solid State Lithium-Air Cells.” 2010. Masters Thesis, University of Dayton. Accessed July 16, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1269636615.

MLA Handbook (7^th Edition):

Garlapati, Vasisht. “Development of High Performance Air-Cathodes for Solid State Lithium-Air Cells.” 2010. Web. 16 Jul 2019.

Vancouver:

Garlapati V. Development of High Performance Air-Cathodes for Solid State Lithium-Air Cells. [Internet] [Masters thesis]. University of Dayton; 2010. [cited 2019 Jul 16]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1269636615.

Council of Science Editors:

Garlapati V. Development of High Performance Air-Cathodes for Solid State Lithium-Air Cells. [Masters Thesis]. University of Dayton; 2010. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1269636615

Indiana University

28. Webb, Michael. New designs and detection strategies for glow discharge as an alternative spectrochemical source .

Degree: 2010, Indiana University

URL: http://hdl.handle.net/2022/7462

► Powerful instrumentation exists for the determination of elemental concentrations in a range of samples, but all such instruments are the product of compromises among desirable… (more)

▼ Powerful instrumentation exists for the determination of elemental concentrations in a range of samples, but all such instruments are the product of compromises among desirable properties. Sensitivity, accuracy, precision, portability, expense, sample size, speed, and other aspects of analysis are balanced based on the nature of a problem and the available resources. Opportunities exist for new instruments that strike a different balance from existing methods, particularly if these new techniques offer advantages over existing ones. Glow discharge (GD) is a flexible and potent platform from which to develop new spectrochemical methods, including those for elemental analysis. The methods described here seek to improve upon areas where GD falls short of other methods and to exploit the areas where GD excels, particularly speed and cost. Glow discharge has predominately been used for the analysis of solids, and it offers high sensitivity and depth resolution at a comparatively low cost in this application. However, it has historically lacked lateral (in the plane of the sample surface) resolution. This document describes a new method, making use of pulsed GD and monochromatic imaging, that adds lateral resolution better than 100 µm. Traditionally, glow discharges have found little use in the analysis of solutions, largely due to their inefficiency in vaporizing the solvent. Two glow discharges, both operated at atmospheric pressure to improve desolvation, are described and characterized here. The solution-cathode glow discharge (SCGD) is a simplified and improved version of the electrolyte-cathode glow discharge. A high voltage is applied across a gap between a sample solution and an electrode, forming a plasma that directly samples the solution and produces atomic emission that is used to identify and quantify the solution's elemental constituents. Several studies on the SCGD are described, including characterization and improvement of the source. The annular glow discharge (AGD) is another glow discharge for the analysis of solutions. Unlike the SCGD, it is operated between two metal electrodes and the solution does not form a fundamental part of the plasma, which allows greater flexibility in solution composition. Both methods offer competitive analytical performance at low cost and with the potential for portability. Advisors/Committee Members: Hieftje, Gary M (advisor).

Subjects/Keywords: solution-cathode glow discharge; glow discharge; ELCAD; electrolyte-cathode glow discharge; spectroscopy; elemental analysis

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APA (6^th Edition):

Webb, M. (2010). New designs and detection strategies for glow discharge as an alternative spectrochemical source . (Thesis). Indiana University. Retrieved from http://hdl.handle.net/2022/7462

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):

Webb, Michael. “New designs and detection strategies for glow discharge as an alternative spectrochemical source .” 2010. Thesis, Indiana University. Accessed July 16, 2019. http://hdl.handle.net/2022/7462.

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

MLA Handbook (7^th Edition):

Webb, Michael. “New designs and detection strategies for glow discharge as an alternative spectrochemical source .” 2010. Web. 16 Jul 2019.

Vancouver:

Webb M. New designs and detection strategies for glow discharge as an alternative spectrochemical source . [Internet] [Thesis]. Indiana University; 2010. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/2022/7462.

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

Council of Science Editors:

Webb M. New designs and detection strategies for glow discharge as an alternative spectrochemical source . [Thesis]. Indiana University; 2010. Available from: http://hdl.handle.net/2022/7462

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

Université Montpellier II

29. Perea, Alexis. Les phosphates de structure olivine LiMPO4 (M=Fe, Mn) comme matériau actif d’électrode positive des accumulateurs Li-ion : The lithium metal phosphates LiMPO4 olivine structure (M = Fe, Mn) as the active material of the positive electrode of Li-ion.

Degree: Docteur es, Chimie et Physicochimie des matériaux, 2011, Université Montpellier II

URL: http://www.theses.fr/2011MON20074

►

Ce mémoire est consacré à la recherche de matériaux d'électrode positive pour batteries Li-ion et plus particulièrement aux phases de type olivine : LiFePO4, LiFe1-yMnyPO4,… (more)

▼

Ce mémoire est consacré à la recherche de matériaux d'électrode positive pour batteries Li-ion et plus particulièrement aux phases de type olivine : LiFePO4, LiFe1-yMnyPO4, LiFe1-yCoyPO4 et LiMnyCo1-yPO4 obtenues par voie céramique. Une étude des propriétés physico-chimiques et structurales de ces composés a été réalisée par les techniques classiques de la Chimie du Solide et de la Science des Matériaux : spectrométrie Mössbauer de 57Fe, microscopie MEB et diffraction des rayons X. L'objectif de cette étude est d'identifier et de comprendre les mécanismes de réaction lors du cyclage de la batterie qui peuvent améliorer ou limiter les performances de la batterie.Cette étude a permis de montrer la complémentarité de la spectrométrie Mössbauer et de la diffraction des rayons X pour l'analyse des mécanismes d'oxydo-réduction mis en jeu dans les réactions électrochimiques. A partir du mécanisme biphasé bien connu de LiFePO4, des mécanismes électrochimiques en trois étapes et les phases formées lors du cyclage ont été identifiés pour les phases substituées au manganèse. L'aptitude de ces composés à fonctionner comme matériaux d'électrode positive de batteries Li-Ion de puissance a été démontrée par des cyclages à longue durée à différentes températures et vitesses de cyclage.

This thesis is devoted to finding positive electrode materials for Li-ion batteries and more particularlycompounds of olivine type: LiFePO4, LiFe1-yMnyPO4, LiFe1-yCoyPO4 and LiMnyCo1-yPO4. An in-depth study of their physicochemical and structural properties was done combining Solid State Chemistry and Material Sciences techniques: Mössbauer spectrometry of 57Fe, microscopy SEM and X-ray diffraction. The aim of this study is to identify and understand the electrochemical mechanism during the cycling of the battery that can enhance or limit the battery performance. This study has shown the complementarity of Mössbauer spectrometry and X-ray diffraction to analyze the redox mechanisms involved into the electrochemical reactions. From the well-known two-phase mechanism of LiFePO4, electrochemical mechanisms in three steps and phases formed during cycling have been identified for phase substituted manganese. The ability of these compounds to be used as positive electrode materials for powerful Li-Ion batteries was demonstrated by long-term cycling at different temperatures and rates of cycling.

Advisors/Committee Members: Aldon, Laurent (thesis director).

Subjects/Keywords: Lithium-ion; Olivine; Cathode; Mössbauer; Phosphate; Lithium-ion; Olivine; Cathode; Mössbauer; Phosphate

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

APA (6^th Edition):

Perea, A. (2011). Les phosphates de structure olivine LiMPO4 (M=Fe, Mn) comme matériau actif d’électrode positive des accumulateurs Li-ion : The lithium metal phosphates LiMPO4 olivine structure (M = Fe, Mn) as the active material of the positive electrode of Li-ion. (Doctoral Dissertation). Université Montpellier II. Retrieved from http://www.theses.fr/2011MON20074

Chicago Manual of Style (16^th Edition):

Perea, Alexis. “Les phosphates de structure olivine LiMPO4 (M=Fe, Mn) comme matériau actif d’électrode positive des accumulateurs Li-ion : The lithium metal phosphates LiMPO4 olivine structure (M = Fe, Mn) as the active material of the positive electrode of Li-ion.” 2011. Doctoral Dissertation, Université Montpellier II. Accessed July 16, 2019. http://www.theses.fr/2011MON20074.

MLA Handbook (7^th Edition):

Perea, Alexis. “Les phosphates de structure olivine LiMPO4 (M=Fe, Mn) comme matériau actif d’électrode positive des accumulateurs Li-ion : The lithium metal phosphates LiMPO4 olivine structure (M = Fe, Mn) as the active material of the positive electrode of Li-ion.” 2011. Web. 16 Jul 2019.

Vancouver:

Perea A. Les phosphates de structure olivine LiMPO4 (M=Fe, Mn) comme matériau actif d’électrode positive des accumulateurs Li-ion : The lithium metal phosphates LiMPO4 olivine structure (M = Fe, Mn) as the active material of the positive electrode of Li-ion. [Internet] [Doctoral dissertation]. Université Montpellier II; 2011. [cited 2019 Jul 16]. Available from: http://www.theses.fr/2011MON20074.

Council of Science Editors:

Perea A. Les phosphates de structure olivine LiMPO4 (M=Fe, Mn) comme matériau actif d’électrode positive des accumulateurs Li-ion : The lithium metal phosphates LiMPO4 olivine structure (M = Fe, Mn) as the active material of the positive electrode of Li-ion. [Doctoral Dissertation]. Université Montpellier II; 2011. Available from: http://www.theses.fr/2011MON20074

30. Kosimaningrum, Widya Ernayati. Modification of Carbon Felt for Contruction of Air-Breathing Cathode and Its Application in Microbial Fuel Cell : Construction d'une biopile microbienne à un compartiment avec une cathode à air.

Degree: Docteur es, Chimie et physico-chimie des matériaux, 2018, Montpellier; Institut teknologi Bandung

URL: http://www.theses.fr/2018MONTS110

► La pile à combustible microbienne, MFC, est un bioengine qui associe respectivement le principe biochimique et le principe électrochimique pour extraire les électrons stockés dans… (more)

▼ La pile à combustible microbienne, MFC, est un bioengine qui associe respectivement le principe biochimique et le principe électrochimique pour extraire les électrons stockés dans la matière organique et les transformer en électricité. Dans un MFC, des microbes électroactifs vivants, avec son système enzymatique complet, sont utilisés pour biocatalyser l'oxydation du combustible organique; une anode est introduite artificiellement pour détourner les électrons, ce qui a eu pour résultat le système respiratoire bactérien; et à l'opposé, une cathode entraîne le flux d'électrons qui est ensuite commuté sur le courant électrique. Les microbes électroactifs se répandent dans de nombreuses sources telles que le sol, le compost, les boues, les eaux usées, etc. Les aliments pour animaux, les combustibles organiques et / ou d'autres nutriments peuvent également être abondamment présents dans leurs sources matricielles et dans de nombreuses autres sources inestimables, couramment disponibles dans la vie quotidienne. L'abondance bactérienne et le carburant organique illimité sont les deux raisons attrayantes pour le développement d'une source d'énergie durable telle que le MFC, qui attire également notre attention dans cette recherche. Ici, nous avons développé MFC, double chambre (DCMFC) et chambre unique (SCMFC), alimentés par compost de jardin comme source électroactive et acétate de carburant. Pour des raisons de durabilité et d’autres avantages, c’est-à-dire praticables et respectueux de l’environnement, nous nous sommes principalement concentrés sur le SCMFC avec un système de cathodes respiratoires. La problématique commune du SCMFC est la production d’énergie limitée due principalement à la cinétique lente de la réaction de réduction de l’oxygène (ORR) dans la partie cathodique. Par conséquent, il est important de mettre au point le matériau de la cathode respiratoire qui présente une activité de catalyse appropriée vis-à-vis de la perte de réponse optique pour surmonter cette limitation. Le feutre de carbone (CF) est le matériau de support choisi qui convient à la fabrication de cathodes à respiration aérienne. Alors que le platine (Pt) et l’oxyde de manganèse (MnOx), respectivement, en tant que classe de catalyseur suprême et de second rang, ont été développés sur CF grâce à une méthode simple d’électrodéposition. Les matériaux résultants, dénommés [email protected] et [email protected], ont été caractérisés de manière complète par des méthodes électrochimiques et physicochimiques afin de déterminer leurs performances électrocatalytiques, supportant ainsi l’application de cathodes respiratoires. En conséquence, nous avons développé deux principaux types de cathodes respiratoires, à savoir [email protected] et [email protected], appliquées avec succès dans le SCMFC alimenté par du compost de jardin avec une densité de puissance respective de 140 mW m-2 et 110 mW m-2. De plus, les deux matériaux développés révèlent également des applications prometteuses. Par exemple, [email protected] a été utilisé comme anode de MFC, à la fois dans DCMFC et SCMFC, et a amélioré la… Advisors/Committee Members: Innocent, Christophe (thesis director), Buchari, B. (thesis director), Cretin, Marc (thesis director).

Subjects/Keywords: Biopile; Cathode a air; Microorganismes electroactifs; Biofuel cell; Air cathode; Electroactive microorganisms

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

APA (6^th Edition):

Kosimaningrum, W. E. (2018). Modification of Carbon Felt for Contruction of Air-Breathing Cathode and Its Application in Microbial Fuel Cell : Construction d'une biopile microbienne à un compartiment avec une cathode à air. (Doctoral Dissertation). Montpellier; Institut teknologi Bandung. Retrieved from http://www.theses.fr/2018MONTS110

Chicago Manual of Style (16^th Edition):

Kosimaningrum, Widya Ernayati. “Modification of Carbon Felt for Contruction of Air-Breathing Cathode and Its Application in Microbial Fuel Cell : Construction d'une biopile microbienne à un compartiment avec une cathode à air.” 2018. Doctoral Dissertation, Montpellier; Institut teknologi Bandung. Accessed July 16, 2019. http://www.theses.fr/2018MONTS110.

MLA Handbook (7^th Edition):

Kosimaningrum, Widya Ernayati. “Modification of Carbon Felt for Contruction of Air-Breathing Cathode and Its Application in Microbial Fuel Cell : Construction d'une biopile microbienne à un compartiment avec une cathode à air.” 2018. Web. 16 Jul 2019.

Vancouver:

Kosimaningrum WE. Modification of Carbon Felt for Contruction of Air-Breathing Cathode and Its Application in Microbial Fuel Cell : Construction d'une biopile microbienne à un compartiment avec une cathode à air. [Internet] [Doctoral dissertation]. Montpellier; Institut teknologi Bandung; 2018. [cited 2019 Jul 16]. Available from: http://www.theses.fr/2018MONTS110.

Council of Science Editors:

Kosimaningrum WE. Modification of Carbon Felt for Contruction of Air-Breathing Cathode and Its Application in Microbial Fuel Cell : Construction d'une biopile microbienne à un compartiment avec une cathode à air. [Doctoral Dissertation]. Montpellier; Institut teknologi Bandung; 2018. Available from: http://www.theses.fr/2018MONTS110

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Open Access Theses and Dissertations