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Reaction Kinetics of Lithium Electrodes with Solid Polymer Electrolytes

Title: Reaction Kinetics of Lithium Electrodes with Solid Polymer Electrolytes.

Inaccessible until May 18, 2019 due to copyright restrictions.

Name(s): Berliner, Marc Dylan, author
Type of Resource: text
Genre: Text
Bachelor Thesis
Date Issued: 2018-04-27
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Solid polymer electrolytes have the potential to produce safe, effective alternative to liquid batteries. Creative, new approaches must be developed to determine reaction kinetics. An alternative method to cyclic voltammetry in rotating disk electrodes has been developed in solid polymer electrolytes. The novel pulsed voltammetry approach analysis was verified using a rotating disk electrode with a liquid ferri/ferrocyanide redox couple, and reasonable agreement for exchange current density was found. Reaction kinetics of lithium electrodes were also studied in solid polymer electrolytes consisting of lithium bis(trifluoromethanesulfonyl)imide salt (LiTFSI) dissolved in polystyrene-b-poly(ethylene oxide) block copolymers (SEO). Symmetric Li cells were cycled with pulsed voltammetry to measure current at different salt concentrations and temperatures. Butler-Volmer kinetics for single-electron transfer, reversible reactions were applied to obtain exchange current density and the transfer coefficients. The plating reaction rate of lithium metal was found to be significantly greater than the stripping reaction rate. Reaction kinetics were found to be nearly independent of salt concentration, which suggests that they are dominated primarily by the nature of the lithium metal surface. The activation energy and pre-exponential factor for the plating of lithium metal was found to be a weak function of salt concentration.
Identifier: FSU_libsubv1_scholarship_submission_1524850184_6a0b8089 (IID)
Keywords: Electrochemical Fundamentals, Energy (Sustainability & Environment), Polymers, Plastics & Composites
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Owner Institution: FSU

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Berliner, M. D. (2018). Reaction Kinetics of Lithium Electrodes with Solid Polymer Electrolytes. Retrieved from