锂离子电池硅基负极预锂化技术的研究进展
Research Progress on Prelithiation for Silicon-based Anode in Lithium-ion Battery
冶伟冬 1叶岗2
作者信息
- 1. 中钢集团马鞍山矿山研究总院股份有限公司,安徽马鞍山 243000
- 2. 中钢集团马鞍山矿院新材料科技有限公司,安徽马鞍山 243000
- 折叠
摘要
硅基负极具有高理论容量、高安全性、环境友好性等优点,因此被认为是有潜力的新型负极材料.硅材料在首次充放电过程中会生成不可逆的硅酸盐,导致首次库伦效率降低、循环过程中体积膨胀与电解液的严重副反应,进而导致活性锂损失,严重阻碍了硅极负极的工业化进程.预锂化可以补偿初始活性锂损失来提升首效.总结了近年来硅基负极预锂化方法的研究进展以及各种预锂化技术的优缺点,并对其应用前景进行了展望.
Abstract
Silicon-based materials,with high specific capacity,high security and environmental friendliness,it is consid-ered as a potential new anode material.Irreversible silicate will be generated in the first charging and discharging process of silicon materials,which will lead to the decrease of the first coulombic efficiency,and the loss of active lithium due to vol-ume expansion and serious side reaction of electrolyte during the cycle,which seriously hinders the industrialization pro-cess of silicon anode.Pre-lithiation can compensate the loss of initial active lithium to improve the first effect and then im-prove the energy density of the battery.This review summarizes the research progress of pre-lithiation methods for silicon-based negative electrodes in recent years,summarizes the advantages and disadvantages of various pre-lithiation technolo-gies,and looks forward to their application prospects.
关键词
锂离子电池/硅负极/库伦效率/容量损失/预锂化Key words
lithium-ion battery/silicon anode/Coulombic efficiency/capacity loss/prelithiation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据