高比能长循环磷酸铁锂电解液添加剂研究进展  

Research Progress of Electrolyte Additives for High Specific Energy and Long Cycle Life Lithium Iron Phosphate Batteries

作　　者：孙文坡 陈乐 谢添 周立 SUN Wenpo;CHEN Le;XIE Tian;ZHOU Li(Guangzhou Tinci Materials Technology Co.,Ltd.,Guangdong Guangzhou 510030,China)

机构地区：[1]广州天赐高新材料股份有限公司,广东广州510030

出　　处：《广州化工》2024年第22期61-66,共6页GuangZhou Chemical Industry

摘　　要：锂离子电池近几年在电动车和电子设备行业的应用呈现爆发式增长,高能量密度长循环锂离子电池的需求不断增加。作为提高电池能量密度的重要措施之一,正极预锂化的应用也受到越来越多的关注。然而,正极预锂化添加剂分解电压偏高,稳定性差及易产生气体等问题,严重影响了电池的能量密度和循环寿命。针对正极预锂化技术的实际应用,迫切需要开发商业可用的电解液添加剂来提升电池稳定性和抑制产气。因此,从电池电解液添加剂改进的角度系统地总结和分析了各种提升电解液稳定性和稳固电池界面的添加剂,可为锂离子电池的预锂化技术开发和高比能电池的性能优化提供重要的参考价值。In recent years,the application of lithium-ion batteries in the electric vehicle and electronic equipment industry has shown explosive growth,and the demand for high-energy density long-cycle lithium-ion batteries has been increasing.For the practical application of positive electrode prelithium technology,it is urgent to develop commercially available electrolyte additives to improve battery stability and inhibit gas production.However,the decomposition voltage of the positive electrode pre-lithiation additive is too high,its stability is poor,and it is prone to producing gas,which seriously affects the energy density and cycle life of the battery.For the practical application of positive electrode pre-lithiation technology,there is an urgent need to develop commercially available electrolyte additives to improve the stability of the battery and suppress gas generation.Therefore,systematically summarizing and analyzing various additives that can improve the stability and stabilize the battery interface in the electrolyte can provide important reference value for the development of lithium-ion battery pre-lithiation technology and the optimization of high-energy density batteries.

关 键 词：锂离子电池 正极预锂化 磷酸铁锂 产气机制 电解液添加剂 

分 类 号：O646[理学—物理化学]