摘要
在低温下由于电解液流动性下降、Li+传输能力降低导致的锂离子电池容量快速衰减、循环寿命缩短等问题,日益受到重视。分析锂离子电池低温性能的影响因素,如电解液的本体性质与电解液/电极界面反应。着重从溶剂、锂盐和添加剂等方面,总结低温电解液的研究进展,如开发高低温兼顾的电解液、制备锂盐及探讨不同添加剂的协同作用。对低温电解液的发展提出展望,如制备局部高浓度电解液或发展全氟化电解液等。
The rapid decline of capacity and the shorten of cycle life due to the decline of electrolyte liquidity and Li+transmission capacity at low temperatures of Li-ion battery had attracted more attention.The factors influencing the low-temperature performance of Li-ion battery,such as the intrinsic properties of the electrolyte and the electrolyte/electrode interface reaction were analyzed.The research progress in low-temperature electrolytes was summarized,focusing on solvents,lithium salts and additives,such as the development of new electrolytes that combined high and low temperature,the preparation of new lithium salts and the exploration of the synergy of different additives.The development of low temperature electrolyte was prospected,such as the preparation of local high concentration electrolyte or the development of perfluorinated electrolyte.
作者
何菡
王跃
邱景义
陈俊红
HE Han;WANG Yue;QIU Jing-yi;CHEN Jun-hong(School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China;Research Institute of Chemical Defense,Beijing 100191,China)
出处
《电池》
CAS
北大核心
2023年第2期208-212,共5页
Battery Bimonthly
关键词
锂离子电池
低温性能
电解液
锂盐
添加剂
Li-ion battery
low temperature performance
electrolyte
lithium salt
additive
