锂离子电池产气机制及基于电解液的抑制策略

徐冲, 徐宁, 蒋志敏, 李中凯, 胡洋, 严红, 马国强

Mechanisms of gas evolution and suppressing strategies based on the electrolyte in lithium-ion batteries

Chong XU, Ning XU, Zhimin JIANG, Zhongkai LI, Yang HU, Hong YAN, Guoqiang MA

图8 (a) 电解液中溶剂可能产生的气体汇总；(b) 在EMC溶剂中使用3种锂盐提升NCM811/Gr电池热稳定性[63]；(c) 使用EMD(EMC/DMC/DEC)-LiNO3 电解液体系提升NCM811/Gr电池在高电压下的稳定性[64]

Fig. 8 (a) Summary of gas generation from solvents in electrolytes; (b) Adopting three types of lithium salts in electrolyte to improve thermal stability of NCM811/Gr pouch cell[63]; (c) EMD(EMC/DMC/DEC)-LiNO3 electrolyte to enhance cycling stability at 2.8～4.4 V in NCM811/Gr cell[64]