一种低温环境下镍钴锰酸锂三元锂离子电池的研制

Development of a Lithium Ion Nickel-Cobalt-Manganate Ternary Battery at Low Temperature

低温环境下锂离子电池的放电容量剧减,改善其低温性能意义重大,但锂离子电池低温特性的研究明显滞后。本文优选出合适的三元正极材料、人造石墨负极材料、负极导电剂和低温电解液(包括溶剂体系、添加剂和锂盐),开发出一种耐低温镍钴锰酸锂三元锂离子电池,并测试了电池的放电倍率、贮存和耐低温等性能,以期为相关行业提供参考。

The discharge capacity of lithium ion battery decrease sharply in low temperature environment.It is of great significance to improve its low temperature performance,but the research on low temperature characteristics of lithium ion battery lags behind obviously.This paper selected the appropriate ternary anode materials,artificial graphite anode materials,electrolyte(including solvent systems,additives and lithium salt)at low temperature,the cathode conductive agent,and developed a low temperature resistant nickel-cobalt-manganate lithium ternary lithium ion battery,and test the battery discharge rate,storage and low temperature resistant performance,so as to provide reference for related industries.