High-Voltage and Intrinsically Safe Sodium Metal Batteries Enabled by Nonflammable Fluorinated Phosphate Electrolytes

Autor: Hui Li, Hui Chen, Xiaohui Shen, Xingwei Liu, Yongjin Fang, Faping Zhong, Xinping Ai, Hanxi Yang, Yuliang Cao
Rok vydání: 2022
Předmět:
Zdroj: ACS Applied Materials & Interfaces. 14:43387-43396
ISSN: 1944-8252
1944-8244
Popis: Sodium metal is a promising anode for high-energy-density sodium rechargeable batteries (RSBs). However, the low Coulombic efficiency (CE) of the Na plating/stripping process and the problem of safety hinder their practical application. Herein, we report a facile strategy for employing the fluorinated phosphate solvents to realize highly reversible Na plating/stripping and improve the safety performance. The fluorinated phosphate molecules reduce the polarity of the solvent and lower the coordination number to Na
Databáze: OpenAIRE