全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
电化学  2010 

锂离子电池内部短路失效的反应机理研究

, PP. 185-191

Keywords: 锂离子电池,内部短路,失效机理,挤压

Full-Text   Cite this paper   Add to My Lib

Abstract:

应用电池挤压试验机研究了锂离子电池内部短路失效过程,并由DSC、GC/MS和XRD分析了电池内部的正极、负极和电解液之间在不同温度下的反应机理.实验表明,正极Li0.5CoO2与电解液的反应是导致电池内部短路失效的根本原因.电池因内部短路发热,一旦温度达到正极Li0.5CoO2的分解温度时,正极瞬时分解,并释放出O2.后者与电解液瞬间发生剧烈反应,同时放出大量CO2气体,冲破电池壳体,造成电池发生爆炸.其中SEI膜自身的分解反应以及负极与电解液在初期的反应都为正极与电解液反应起了积累热量的作用.

References

[1]  Wu Yuping(吴宇平),Wan Chunrong(万春荣),Jiang Changyin(姜长印),et al.Lithium ion second battery[M].Beijing:Chemical Industry Press,2002.10.
[2]  Spotnitz R,Franklin J.Abuse behavior of high-power,lithium-ion cells[J].Journal of Power Sources,2003,113:81-100.
[3]  Balakrishnan P G,Ramesh R,Kumar T P.Safety mecha-nisms in lithium-ion batteries[J].Journal of Power Sources,2006,155:401-414.
[4]  Zeng Yuqun,Wu Kai,Wang Deyu,et al.Overcharge in-vestigation of lithium-ion polymer batteries[J].Journal of Power Sources,2006,160:1302-1307.
[5]  Mandal B K,Padhi A K,Shi Zhong,et al.Thermal runa-way inhibitors for lithium battery electrolytes[J].Jour-nal of Power Sources,2006,161:1341-1345.
[6]  Tang Chenming(唐琛明),Wang Xingwei(王兴威),Sha Yongxiang(沙永香),et al.Over-charge characteris-tics of high-power18650Li-ion batteries[J].Chinese Journal of Power Sources(电源技术),2007,31(11):885-887.
[7]  Said Al-Hallaj,Selman J R.Thermal modeling of sec-ondary lithium batteries for electric vehicle/hybrid elec-tric vehicle applications[J].Journal of Power Sources,2002,110:341-348.
[8]  Tang Zhiyuan(唐致远),Guan Daoan(管道安),Zhang Na(张娜),et al.Research on safety characteristics of high power lithium-ion batteries[J].Chemical Industry and Engineering Progress(化工进展),2005,24(10):1098-1102.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133