欢迎访问《电化学(中英文)》期刊官方网站,今天是

电化学(中英文) ›› 2006, Vol. 12 ›› Issue (3): 266-270. 

• 研究论文 • 上一篇    下一篇

锂离子电池爆炸机理分析

陈玉红;唐致远;贺艳兵;刘强;   

  1. 天津大学化工学院应用化学系,天津大学化工学院应用化学系,天津大学化工学院应用化学系,天津大学化工学院应用化学系 天津300072,天津300072,天津300072,天津300072
  • 收稿日期:2006-08-28 修回日期:2006-08-28 出版日期:2006-08-28 发布日期:2006-08-28

Research of Explosion Mechanism of Lithium-ion Battery

CHEN Yu-hong,TANG Zhi-yuan~   

  1. (*),HE Yan-bing,LIU Qiang(Department of Applied Chemistry,School of Chemical Engineering and Technology,Tianjin300072,China
  • Received:2006-08-28 Revised:2006-08-28 Published:2006-08-28 Online:2006-08-28

摘要: 研究L iCoO2(或L1.05Co1/3N i1/3Mn3O2)/L ixC6锂离子电池材料的热分解特性以及锂离子电池在加热、过充、短路等情况下的爆炸机理.实验表明,50~350℃之间负极表面存在SEI膜的分解、L ixC6与电解液乃至L ixC6与PVDF等3种放热反应,电解液于178℃时开始放热,L i1-xCo1/3N i1/3Mn1/3O2的热分解反应起始于230℃.锂离子电池在150℃加热时爆炸,1.5 C过充至15 m in时爆炸,短路情况下不发生爆炸.

关键词: 锂离子电池, 爆炸机理, 热稳定性, 过充, 短路

Abstract: The heat character of Lithium-ion battery materials and explosion mechanism of Lithium-ion cells under the overcharge,short-circuit and other abuse behavior are tested by C_(80) calorimeter,_()DSC and charge-discharge instrument.SEI reactions,Li_xC_(6)/electrolyte and Li_xC_(6)/PVDF reactions take place at the anodes.Electrolyte and solvent reactions happen after 178℃ and Li_(1-x)Co_(1/3)Ni_(1/3)Mn_(1/3)O_(2) decomposes after 230℃.The batteries explode at 150℃ oven test or 1.5C,5.5 V overcharge and do not explode at short-circuit.

Key words: Lithium-ion battery, Explosion mechanism, Thermal stability, Overcharge, Short-circuit

中图分类号: