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

Chem Commun (Camb). 2023 Jul 11;59(56):8715-8718. doi: 10.1039/d3cc02214e.

Authors

Huimin Ji¹, Chunlin Xie¹, Tingqing Wu¹, Hao Wang¹, Zhiwen Cai¹, Qi Zhang¹, Wenbin Li¹, Liang Fu², Huanhuan Li³, Haiyan Wang¹

Affiliations

¹ Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China. wanghy419@csu.edu.cn.
² College of Materials Science and Engineering, Chongqing University, Chongqing, 400045, P. R. China. liangfu@cqu.edu.cn.
³ School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, P. R. China.

PMID: 37350501
DOI: 10.1039/d3cc02214e

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.