Kinetic study of parasitic reactions in lithium-ion batteries: A case study on LiNi0.6Mn0.2Co0.2O2

  • Zeng X
  • Xu G
  • Li Y
 et al. 
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Abstract

The side reactions between the electrode materials and the nonaqueous electrolytes have been the major contributor to the degradation of electrochemical performance of lithium-ion batteries. A home-built high-precision leakage current measuring system was deployed to investigate the reaction kinetics between the delithiated LiNi0.6Mn0.2Co0.2O2 and a conventional nonaqueous electrolyte. It was found that the rate of parasitic reaction had strong dependence on the upper cutoff potential of the cathode material. The kinetic data also indicated a change of reaction mode at about 4.5 V vs Li+/Li.

Author-supplied keywords

  • cathode
  • interfacial reaction
  • leakage current
  • lithium-ion battery
  • parasitic reaction

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Authors

  • Xiaoqiao Zeng

  • Gui Liang Xu

  • Yan Li

  • Xiangyi Luo

  • Filippo Maglia

  • Christoph Bauer

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