电源技术2025，Vol.49Issue(5)：940-945,6.DOI:10.3969/j.issn.1002-087X.2025.05.007
四乙烯基硅烷在高镍硅碳软包电池的应用研究
Application research of tetravinylsilane in high-nickel silicon-carbon pouch cells
谢英朋 1冀亚娟 1黄佳苑 1刘建华 1刘金成 1赵瑞瑞1
作者信息
- 1. 惠州亿纬锂能股份有限公司,广东 惠州 516006
- 折叠
摘要
Abstract
Some problems in the high nickel/silicon-carbon system of pouch batteries such as gas pro-duction at high temperatures and repeated rupture-growth of the solid-electrolyte interphase(SEI),which leads to poor cell cycling and storage performance.In this study,a graphite-based anode blended with 20%silicon-carbon and a ternary NCM811 cathode were employed to investigate the film-forming effect and mechanism of TVSi(Tetravinylsilane),an electrolyte additive,on the surfaces of both the anode and cathode.Experimental results demonstrate that TVSi can preferentially form a dense and stable interfacial film on the surfaces of both electrodes,which significantly enhances the battery's cycle and storage performance.Compared with the general electrolyte,the cell containing TVSi exhibits an increased cycle life by 112 times at 25℃,407 times at 45℃,and an improved ca-pacity recovery rate by 3%after 30 days of storage at 60℃.SEM and ICP were utilized to character-ize the mechanism of TVSi action on the surfaces of both electrodes.The utilization of TVSi additives can address the current calendar life issues in high-nickel silicon-carbon battery systems,accelerating the industrialization of high-energy-density battery products.关键词
高镍/高硅体系/四乙烯基硅烷/循环寿命/存储寿命/表面稳定化技术Key words
high-nickel/high-silicon system/tetravinylsilane/cycle life/storage life/surface stabiliza-tion technology分类
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谢英朋,冀亚娟,黄佳苑,刘建华,刘金成,赵瑞瑞..四乙烯基硅烷在高镍硅碳软包电池的应用研究[J].电源技术,2025,49(5):940-945,6.
