High-entropy electrolytes in boosting battery performance

doi: 10.1088/2752-5724/ace8ab

Jijian Xu^{1, 2
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Department of Chemistry, City University of Hong Kong, Hong Kong 999077, People’s Republic of China
Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, United States of America

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Corresponding author: E-mail: jijianxu@umd.edu

摘要

Abstract: Entropy, once overlooked, is an essential aspect of electrolytes. Recently emerged high-entropy electrolytes with multiple components provide vast compositional space and interfacial chemistry possibilities for electrolyte design. It is noteworthy that high-entropy electrolytes exhibit extraordinarily high ionic conductivity at low temperatures, thereby creating a new direction for batteries to operate at ultra-low temperatures. This commentary discusses the underlying mechanism, challenges encountered, and potential solutions of high-entropy electrolyte design in the hope of sparking future research in this subject.
- electrolyte design /
- high-entropy /
- low temperature /
- batteries
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Figure 1. (a) Increasing the number of components is a promising strategy to increase the entropy and lower the Gibbs free energy. (b) Phase diagram of eutectic mixture with two components, showing the eutectic point is lower than the melting point of each component.

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Figure 2. Schematic illustrations of the difference between commercial carbonate-based electrolytes and high-entropy electrolytes upon the decrease of temperature.

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