High-entropy solvent design enabling a universal electrolyte with a low freezing point for low-temperature aqueous batteries

Huimin Ji; Chunlin Xie; Tingqing Wu; Hao Wang; Zhiwen Cai; Qi Zhang; Wenbin Li; Liang Fu; Huanhuan Li; Haiyan Wang

doi:10.1039/D3CC02214E

High-entropy solvent design enabling a universal electrolyte with a low freezing point for low-temperature aqueous batteries†

Huimin Ji,‡^a Chunlin Xie,‡^a Tingqing Wu,^a Hao Wang,^a Zhiwen Cai,^a Qi Zhang,

^a Wenbin Li,^a Liang Fu,*^b Huanhuan Li

^c and Haiyan Wang

*^a

Author affiliations

* Corresponding authors

^a Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha, P. R. China
E-mail: wanghy419@csu.edu.cn

^b College of Materials Science and Engineering, Chongqing University, Chongqing, P. R. China
E-mail: liangfu@cqu.edu.cn

^c School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, P. R. China

Abstract

Amide additives acting as hydrogen-bonding ligands effectively break the cross-linking structures between water molecules and increase the entropy of mixed solvents, thus enabling a mixed solvent with an ultralow freezing point of −98 °C. Zinc-ion batteries using this hybrid solvent exhibit good cycling stability over a wide temperature range from −60 °C to 50 °C.

Chemical Communications

High-entropy solvent design enabling a universal electrolyte with a low freezing point for low-temperature aqueous batteries†

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High-entropy solvent design enabling a universal electrolyte with a low freezing point for low-temperature aqueous batteries

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