添加剂LiBOB对锂离子电池存储性能影响研究  

Study on influences of LiBOB as additive on the storage performances of lithium-ion battery

作　　者：程冰冰 程臣 盘毅[2] Bingbing Cheng;Chen Cheng;Yi Pan(Wuhan Institute of Marine Electric Propulsion,Wuhan 430064,China;National University of Defense Technology,Changsha 410000,China)

机构地区：[1]武汉船用电力推进装置研究所,武汉430064 [2]国防科技大学,长沙410000

出　　处：《船电技术》2022年第10期73-75,共3页Marine Electric & Electronic Engineering

摘　　要：以双草酸硼酸锂(LiBOB)为锂离子电池添加剂,对电池正负极相容性以及对电池存储性能影响进行了研究。本文介绍了对锂离子电池在不同比例(0%和3%)添加剂LiBOB下电池在25℃和65℃温度下的存储性能,并对比分析了电池存储前后电压、内阻和阻抗变化。结果表明,LiBOB作为硼酸锂锂盐能够在正极和负极表面分别形成完整但不影响Li在电极中嵌入和脱出过程的表面膜;当添加比例为3%,电池于65℃存储120天时,内阻仅由22.8 mΩ增加至30.4 mΩ,同时电池的放电性能优于不含添加剂电池。The LiBOB was used as the additive to study the compatibility with graphite anode and LiCoO2 positive electrode as well as its influences on the storage performances of lithium-ion battery.In this paper,the storage performances such as voltage,internal resistance and impedance at different temperatures(25℃and 65℃)of lithium-ion battery with different percentage(0%and 3%)of LiBOB are introduced.The Studies show that the additive LiBOB can promote the positive and anode electrode forming a more stable surface film which does not affect the diffusion of lithium in the electrode.It is observed that the internal resistance only increased from 22.8mΩto 30.4mΩwhen the ratio of the additive is 3%and meanwhile the discharge performance of the battery with LiBOB are improved compared with that without the additive.

关 键 词：锂离子电池 存储性能 LIBOB 

分 类 号：TM912[电气工程—电力电子与电力传动]