Temperature-responsive solvation enabled by dipole-dipole interactions towards wide-temperature sodium-ion batteries

Meilong Wang, Luming Yin, Mengting Zheng, Xiaowei Liu, Chao Yang, Wenxi Hu, Jingjing Xie, Ruitao Sun, Jin Han, Ya You () and Jun Lu ()
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Meilong Wang: Wuhan University of Technology
Luming Yin: Wuhan University of Technology
Mengting Zheng: Zhejiang University
Xiaowei Liu: Wuhan University of Technology
Chao Yang: Wuhan University of Technology
Wenxi Hu: Wuhan University of Technology
Jingjing Xie: Wuhan University of Technology
Ruitao Sun: Wuhan University of Technology
Jin Han: School of Materials Science and Microelectronics, Wuhan University of Technology
Ya You: Wuhan University of Technology
Jun Lu: Zhejiang University

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Rechargeable batteries with high durability over wide temperature is needed in aerospace and submarine fields. Unfortunately, Current battery technologies suffer from limited operating temperatures due to the rapid performance decay at extreme temperatures. A major challenge for wide-temperature electrolyte design lies in restricting the parasitic reactions at elevated temperatures while improving the reaction kinetics at low temperatures. Here, we demonstrate a temperature-adaptive electrolyte design by regulating the dipole-dipole interactions at various temperatures to simultaneously address the issues at both elevated and subzero temperatures. This approach prevents electrolyte degradation while endowing it with the ability to undergo adaptive changes as temperature varies. Such electrolyte favors to form solvation structure with high thermal stability with rising temperatures and transits to one that prevents salt precipitation at lower temperatures. This ensures stably within a wide temperature range of ‒60 −55 °C. This temperature-adaptive electrolyte opens an avenue for wide-temperature electrolyte design, highlighting the significance of dipole-dipole interactions in regulating solvation structures.

Date: 2024
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DOI: 10.1038/s41467-024-53259-5

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