Thermal runaway mechanism of lithium-ion battery with LiNi0.8Mn0.1Co0.1O2 cathode materials

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Yan Li
  • Xiang Liu
  • Li Wang
  • Xuning Feng
  • Dongsheng Ren
  • Yu Wu
  • Guiliang Xu
  • Languang Lu
  • Junxian Hou
  • Weifeng Zhang
  • Yongling Wang
  • Wenqian Xu
  • Zaifa Wang
  • Jianyu Huang
  • Xiangfeng Meng
  • Xuebing Han
  • Hewu Wang
  • Xiangming He
  • Zonghai Chen
  • Khalil Amine
  • Minggao Ouyang

Detail(s)

Original languageEnglish
Article number105878
Journal / PublicationNano Energy
Volume85
Online published16 Feb 2021
Publication statusPublished - Jul 2021
Externally publishedYes

Abstract

Battery safety is critical to the application of lithium-ion batteries, especially for high energy density battery applied in electric vehicles. In this paper, the thermal runaway mechanism of LiNi0.8Co0.1Mn0.1O2 based lithium-ion battery is illustrated. And the reaction between cathode and flammable electrolyte is proved as the trigger of the thermal runaway accident. In detail, with differential scanning calorimeter tests for battery components, the material combination contributing to thermal runaway was decoupled. Characterization with synchrotron X-ray diffraction and transmission electron microscopy with in-situ heating proved that the vigorous exothermic reaction is initiated by the liberated oxygen species. The pulse of highly active oxygen species reacted quickly with the electrolyte, accompanied with tremendous heat release, which accelerated the phase transformation of charged cathode. Also, the mechanism is verified by a confirmatory experiment when the highly active oxygen species were trapped by anion receptor, the phase transformation of the charged cathode was inhibited. Clarifying the thermal runaway mechanism of LiNi0.8Co0.1Mn0.1 based lithium-ion battery may light the way to battery chemistries of both high energy density and high safety.

Research Area(s)

  • Battery safety, LiNi0.8Mn0.1Co0.1O2, Lithium-ion battery, Mechanism, Thermal runway

Citation Format(s)

Thermal runaway mechanism of lithium-ion battery with LiNi0.8Mn0.1Co0.1O2 cathode materials. / Li, Yan; Liu, Xiang; Wang, Li; Feng, Xuning; Ren, Dongsheng; Wu, Yu; Xu, Guiliang; Lu, Languang; Hou, Junxian; Zhang, Weifeng; Wang, Yongling; Xu, Wenqian; Ren, Yang; Wang, Zaifa; Huang, Jianyu; Meng, Xiangfeng; Han, Xuebing; Wang, Hewu; He, Xiangming; Chen, Zonghai; Amine, Khalil; Ouyang, Minggao.

In: Nano Energy, Vol. 85, 105878, 07.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review