Internal-short-mitigating current collector for lithium-ion battery
作者: Meng WangAnh V. LeDaniel J. NoelleYang ShiY. Shirley MengYu Qiao
作者单位: 1Department of Structural Engineering, University of California – San Diego, La Jolla, CA 92093-0085, USA
2Program of Materials Science and Engineering, University of California – San Diego, La Jolla, CA 92093, USA
3Department of Nanoengineering, University of California – San Diego, La Jolla, CA 92093, USA
刊名: Journal of Power Sources, 2017
来源数据库: Elsevier Journal
DOI: 10.1016/j.jpowsour.2017.03.004
关键词: Lithium-ion batteryCurrent collectorMechanical abuseInternal shortThermal runaway
原始语种摘要: Abstract(#br)Mechanical abuse often causes thermal runaway of lithium-ion battery (LIB). When a LIB cell is impacted, radial cracks can be formed in the current collector, separating the electrode into petals. As separator ruptures, the petals on positive and negative electrodes may contact each other, forming internal short circuit (ISC). In this study, we conducted an experimental investigation on LIB coin cells with current collectors modified by surface notches. Our testing results showed that as the current collector contained appropriate surface notches, the cracking mode of electrode in a damaged LIB cell could be adjusted. Particularly, if a complete circumferential crack was generated, the petals would be cut off, which drastically reduced the area of electrode involved in ISC...
全文获取路径: Elsevier  (合作)
分享到:
来源刊物:
影响因子:4.675 (2012)

×
关键词翻译
关键词翻译
  • lithium 
  • battery 电池
  • current 
  • short 短的
  • collector 捕收剂