A minimal hybrid-chain ether electrolyte enables wide-temperature sodium-ion storage

Chuang Bao; Pan Chu; Fadong Wu; Xiang Li; Yihen Qi; Yong Zhao; Runyi Zhou; Keyu Wang; Haoran Xue; Xuanchi Li; Xiaojun Ma; Zheng Bo; Huachao Yang

doi:10.1039/D6CC01604A

A minimal hybrid-chain ether electrolyte enables wide-temperature sodium-ion storage

Chuang Bao,^a Pan Chu,^b Fadong Wu,^c Xiang Li,^d Yihen Qi,^a Yong Zhao,^a Runyi Zhou,^a Keyu Wang,^a Haoran Xue,^a Xuanchi Li,^a Xiaojun Ma,^c Zheng Bo

^a and Huachao Yang

*^a

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* Corresponding authors

^a State Key Laboratory of Clean Energy Utilization, College of Energy Engineering, Zhejiang University, Hangzhou, Zhejiang Province, China
E-mail: huachao@zju.edu.cn

^b Petro China Shenzhen Renewable Energy Research Institute Co. Ltd, Shenzhen 518000, China

^c Zhejiang Environmental Protection Group Ecological and Environmental Protection Research Institute Co., Ltd, Hangzhou, Zhejiang Province, China

^d Science and Education Integration College of Energy and Carbon Neutralization, Zhejiang University of Technology, Hangzhou, Zhejiang Province, China

Abstract

A minimal hybrid-chain ether electrolyte enables wide-temperature sodium-ion storage by balancing Na⁺ solvation and interfacial chemistry. It lowers the freezing point to −60.6 °C, maintains a conductivity of 1.23 mS cm⁻¹ at −40 °C, induces the formation of a temperature-adaptive SEI, and delivers stable pouch-cell operation from −40 to 50 °C.

Chemical Communications

A minimal hybrid-chain ether electrolyte enables wide-temperature sodium-ion storage

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