联苯作为锂离子电池过充保护剂研究  

Study on Biphenyl as Overcharge Protective Agent for Lithium Ion Battery

作　　者：李渠成 LI Qucheng(Henan Fine Electrolyte New Energy Technology Co.,Ltd. , Jiaozuo 454006 , China)

机构地区：[1]河南省法恩莱特新能源科技有限公司,河南焦作454006

出　　处：《河南化工》2022年第5期30-32,共3页Henan Chemical Industry

摘　　要：以联苯作为锂离子电解液过充保护添加剂,在过充电压为4.5~4.6 V时发生氧化电聚合反应。在电池正极生成电聚合物,能有效使电池电压维持在一个相对安全的区间;同时生成的电聚合物增大电池内阻和温升程度,提高温度保护设备的灵敏度,在电池温度较低时阻止电池持续过充和电解液的大量分解。加入联苯的电解液在正常使用时,对电池的性能没有根本性的影响。Biphenyl as lithium ion electrolyte overcharge protection additives,oxidative electropolymerization occurres at overcharge voltage of 4.5~4.6 V,the polymer battery positive electrode to generate electricity,can effectively keep the battery voltage in a relatively safe range,simultaneous generated of electropolymers increases the internal resistance and temperature rise of batteries,improves the sensitivity of temperature protection equipment,prevents continuous overcharge and massive decomposition of electrolyte when the battery temperature is low.The electrolyte adds with biphenyl has no fundamental effect on the performance of the battery in normal use.

关 键 词：联苯 过充保护 安全性 电解液添加剂 

分 类 号：TQ152[化学工程—电化学工业]