Method—Using Microelectrodes to Explore Solid Polymer Electrolytes

Date Published
05/2021
Publication Type
Journal Article
Authors
DOI
10.1149/1945-7111/abee5f
Abstract

Solid polymer electrolytes are an emerging technology in electrochemistry driven by their use in energy applications such as fuel cells, electrolyzers, and solid-state batteries. Compared to traditional liquid electrolytes, solid polymer electrolytes provide safer, cheaper, and potentially improved device performance. However, there is a lack of standard experimental methods for studying solid electrolytes. Microelectrodes have inherent benefits capable of filling this experimental gap due primarily to their integration into model electrochemical cells with solid electrolytes that represent complex interfaces, enabling additional insight into reaction processes. In this tutorial review, we explore the use of microelectrodes to study solid polymer electrolytes, beginning with a brief history of the field including common experimental cell designs and their benefits and drawbacks. Methods of evaluating essential kinetic and mass-transport parameters are then examined. In addition, the key studies of the past 30 years utilizing microelectrode cells and solid polymer electrolytes are summarized, with important results highlighted and compared. Finally, future studies of solid polymer electrolytes with microelectrodes and potential new avenues of research are commented on.

Journal
Journal of The Electrochemical Society
Volume
168
Year of Publication
2021
Issue
5
Pagination
056517
ISSN Number
0013-4651
Short Title
J. Electrochem. Soc.
Refereed Designation
Refereed
Organizations
Research Areas
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