Mitigating the volume expansion and enhancing the cycling stability of ferrous fluorosilicate-modified silicon-based composite anodes for lithium-ion batteries

Author:

Sun Jichang12,Liu Xiaoyi1,Zheng Penglun2,Zhao Yang3,Zheng Yun1ORCID,Chai Jingchao1ORCID,Liu Zhihong4ORCID

Affiliation:

1. School of Optoelectronic Materials and Technology, Jianghan University, Wuhan, 430056, P. R. China

2. College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, 618307, P.R. China

3. China Institute of Ocean Engineering (Tsing Tao), Qingdao, 266555, P. R. China

4. State Key Laboratory of Precision Blasting, Jianghan University, Wuhan, 430056, P. R. China

Abstract

This study introduces an FeSiF6 additive synthesized via the reaction of HF with Si–Fe alloys. It prevents crystalline Li15Si4 formation and promotes stable SEI film, significantly enhancing the cycling stability of silicon-based anodes.

Funder

Jianghan University

Publisher

Royal Society of Chemistry (RSC)

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