Benign-to-malignant transition in external short circuiting of lithium-ion batteries

Ze Yu Chen, Rui Xiong, Bo Zhang, Rui Xin Yang, Wei Xiang Shen, Xiao Guang Yang, Wan Zhou Sun, Dai Wei Yu, Feng Chun Sun

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

External short circuiting (ESC) is a main source of battery faults. However, the ESC damage mechanism and its evolution process are unclear, resulting in difficulties in safety management. Here, we report the impact of different ESC durations on battery performance and divide the ESC process into four stages. The analysis reveals that there is a benign regime in which the ESC effect is comparable to nominal charge-discharge cycling. When ESC duration is close to a critical time, there is a benign-to-malignant transition. The critical time corresponds to the inflection point at the end of battery current curve, which reflects heating-induced membrane melting and contraction that distorts the jellyroll. The critical time surface under various conditions is established and the center temperatures of the critical time and battery completely failure are disclosed, paving the way for fault diagnosis and using “benign ESC” in a controlled fashion.

Original languageEnglish (US)
Article number100923
JournalCell Reports Physical Science
Volume3
Issue number6
DOIs
StatePublished - Jun 15 2022

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Materials Science
  • General Engineering
  • General Energy
  • General Physics and Astronomy

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