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You searched for subject:(mechano electrochemistry). Showing records 1 – 2 of 2 total matches.

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1. Schauben, Deanna Nicole. Mechano-Electrochemistry of Nickel Titanium Alloy.

Degree: MS, Mechanical Engineering, 2017, Vanderbilt University

MECHANICAL ENGINEERING Mechano-Electrochemistry of Nickel Titanium Alloy Deanna Schauben Thesis under the direction of Professor Cary L. Pint The fields of strain engineering and mechano-electrochemistry have recently emerged to explore the relationship between strain and electrochemical properties, particularly as they pertain to corrosion. NiTi is an ideal candidate for investigating this relationship due to its superelastic and shape memory properties. Here, an in-situ mechano-electrochemical cell is designed and implemented to obtain the open circuit voltage response of NiTi during straining. Of particular interest is the OCV behavior during the stress-induced martensitic transformation, which is both immediate and dramatic. A survey of OCV response during straining as well as the steady-state response after straining was performed for samples deformed to different percentages of strain at two different strain rates. The steady-state response is permanently changed by up to 44.8 mV only when strain is halted within the SIM plateau, and the magnitude of OCV change increases by a factor of about 2.5-2.9 with a strain rate increase by a factor of 5. These results point to an energetic mechanism of the SIM transformation that is yet to be investigated. Advisors/Committee Members: Douglas Adams (committee member), Cary Pint (chair), Ravindra Duddu (committee member).

Subjects/Keywords: martensite; martensitic transformation; austenite; OCV; strain engineering; mechano-electrochemistry; strain; shape memory; NiTi; open circuit voltage; open circuit potential; Nitinol

…some groups have investigated the mechano-electrochemistry of NiTi and its native oxide in… …localized corrosion.21 In the context of electrochemistry, the open circuit voltage (OCV)… …perform in-situ electrochemistry analysis while the samples were strained, a specialized cell… …quasi-static, thermal effects on the electrochemistry can be neglected. First, the Biot number… …Saturated Calomel Electrode (SCE) as a reference. The mechano-electrochemical… 

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

APA (6th Edition):

Schauben, D. N. (2017). Mechano-Electrochemistry of Nickel Titanium Alloy. (Masters Thesis). Vanderbilt University. Retrieved from http://etd.library.vanderbilt.edu/available/etd-04102017-013317/ ;

Chicago Manual of Style (16th Edition):

Schauben, Deanna Nicole. “Mechano-Electrochemistry of Nickel Titanium Alloy.” 2017. Masters Thesis, Vanderbilt University. Accessed January 24, 2020. http://etd.library.vanderbilt.edu/available/etd-04102017-013317/ ;.

MLA Handbook (7th Edition):

Schauben, Deanna Nicole. “Mechano-Electrochemistry of Nickel Titanium Alloy.” 2017. Web. 24 Jan 2020.

Vancouver:

Schauben DN. Mechano-Electrochemistry of Nickel Titanium Alloy. [Internet] [Masters thesis]. Vanderbilt University; 2017. [cited 2020 Jan 24]. Available from: http://etd.library.vanderbilt.edu/available/etd-04102017-013317/ ;.

Council of Science Editors:

Schauben DN. Mechano-Electrochemistry of Nickel Titanium Alloy. [Masters Thesis]. Vanderbilt University; 2017. Available from: http://etd.library.vanderbilt.edu/available/etd-04102017-013317/ ;

2. Muralidharan, Nitin. Mechano-Electrochemistry for Advanced Energy Storage and Harvesting Devices.

Degree: PhD, Interdisciplinary Materials Science, 2018, Vanderbilt University

A fundamental perception in the energy storage community is that mechanical processes accompanying electrochemical processes are an unavoidable by-product. However, the coupling between mechanics and electrochemistry termed as the âmechano-electrochemical couplingâ is a powerful yet unexplored tool. Using principles of elastic strain engineering, we demonstrate controllable modulation of electrochemical parameters governing energy storage systems. Leveraging the shape memory properties of NiTi alloys, redox potentials and diffusion coefficient modulations for energy storage materials were achieved as a function of applied strain. Building off these principles, we developed electrochemical-mechanical energy harvesters for harnessing ambient mechanical energy at very low frequencies (<5 Hz), a regime where the conventional state-of the art piezoelectric and triboelectric energy harvesters have drastically reduced performances. We also highlight frequency tuning capabilities in this class of energy harvesters owing to the inherent differences in various battery electrode chemistries for use in human motion harvesting and sensing applications and multifunctional transient energy harvesting and storage devices. Additionally, to further illustrate the relationship between mechanical and electrochemical properties, we developed multifunctional structural supercapacitor and battery composites for use in load-bearing applications. Overall, these approaches provide paradigm shifting fundamental insights as well as create a framework for developing such multifunctional energy storage/harvesting architectures for a multitude of applications. Advisors/Committee Members: Dr. Cary Pint (chair), Dr. Douglas Adams (chair), Dr. Greg Walker (committee member), Dr. Rizia Bardhan (committee member), Dr. Leon Bellan (committee member), Dr. Piran Kidambi (committee member).

Subjects/Keywords: electrochemical mechanical coupling; energy harvesting; in-situ; strain; stress; mechanical processes; elastic strain engineering; strain setting; substrate strains; shapememory alloy; superelastic; multifunctional energy storage; transient energy harvesters; transient energy storage; pseudocapacitors; supercapacitors; load-bearing; structural; human motion harvesting; modulating electrochemistry; mechano-electrochemistry; advanced energy storage; advanced energy harvesting; low frequency energy harvesting; ambient energy harvesting; electrochemical-mechanical energy harvesting; Nitinol; battery mechanics; strain engineering; energy storage

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

APA (6th Edition):

Muralidharan, N. (2018). Mechano-Electrochemistry for Advanced Energy Storage and Harvesting Devices. (Doctoral Dissertation). Vanderbilt University. Retrieved from http://etd.library.vanderbilt.edu/available/etd-06142018-084514/ ;

Chicago Manual of Style (16th Edition):

Muralidharan, Nitin. “Mechano-Electrochemistry for Advanced Energy Storage and Harvesting Devices.” 2018. Doctoral Dissertation, Vanderbilt University. Accessed January 24, 2020. http://etd.library.vanderbilt.edu/available/etd-06142018-084514/ ;.

MLA Handbook (7th Edition):

Muralidharan, Nitin. “Mechano-Electrochemistry for Advanced Energy Storage and Harvesting Devices.” 2018. Web. 24 Jan 2020.

Vancouver:

Muralidharan N. Mechano-Electrochemistry for Advanced Energy Storage and Harvesting Devices. [Internet] [Doctoral dissertation]. Vanderbilt University; 2018. [cited 2020 Jan 24]. Available from: http://etd.library.vanderbilt.edu/available/etd-06142018-084514/ ;.

Council of Science Editors:

Muralidharan N. Mechano-Electrochemistry for Advanced Energy Storage and Harvesting Devices. [Doctoral Dissertation]. Vanderbilt University; 2018. Available from: http://etd.library.vanderbilt.edu/available/etd-06142018-084514/ ;

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