中文摘要：

分析锂离子电池在低温工作条件下的性能劣化机理,阐述溶剂物理性质对电解液低温性能的影响规律,总结目前通过低黏度及低熔点的溶剂组分、低阻抗的成膜添加剂以及新型锂盐来改善电池低温性能的研究工作。同时,探讨锂离子电池在高温工作条件下容量衰减机制,综述目前改善锂离子电池高温性能的主要方法,包括采用高温成膜添加剂、耐高温锂盐以及锂盐稳定剂。在此基础上指出目前宽温域锂离子电池发展面临的主要挑战,展望锂离子宽温域电解液的发展趋势。

英文摘要：

The degradation mechanism of lithium ion battery under low temperature was analyzed. The effect regularity of physical properties of solvent on low temperature performance of electrolyte was also described. Then, the research works of improving the low temperature performances of batteries by using low melting point and low viscosity solvent, low-impedance film-forming additives, new lithium salts were summarized. Meanwhile, the capacity attenuation mechanism of lithium ion battery under elevated temperature working conditions was also discussed. The main methods of improving the high temperature stability of lithium ion battery were reviewed, containing using high temperature film additive, high temperature lithium salt and lithium salt stabilizer. On these basis, the domain challenges and the development trend of lithium ion battery working in a wide temperature scope was prospected.