Regulating the solvation structure of potassium Ions using a multidentate ether in potassium metal batteries
Date
2022-09-26
Advisor
Instructor
Source Title
ACS Applied Energy Materials
Print ISSN
Electronic ISSN
2574-0962
Publisher
American Chemical Society
Volume
5
Issue
9
Pages
10366 - 10374
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Abstract
Potassium (K) is regarded as an alternative to lithium (Li) for use in contemporary energy storage devices owing to its high abundance and low electrochemical potential. However, because K ions are larger than Li ions, they exhibit different solvation properties that can ultimately affect device performance. Herein, a multidentate ether-based electrolyte is demonstrated to effectively solvate K ions and the solvation structures can be further modulated with cosolvents. The use of the multidentate ether-based electrolyte also suppresses the formation of K dendrites and significantly enhances the cycling stability of K//K symmetric cells (e.g., over 2000 h at 0.25 mA cm-2). © 2022 American Chemical Society. All rights reserved.
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Other identifiers
Book Title
Keywords
Dendrite-free metal anode, Ether-based electrolytes, Multidentate solvents, Potassium metal anode, Solvation structures