Decomposition reaction of LiPF6-based electrolytes for lithium ion cells

  • Kawamura T
  • Okada S
  • Yamaki J
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The decomposition of LiPF6 electrolytes with water was studied by measuring the water content after storage. The solvents used were ethylene carbonate (EC)+diethyl carbonate (DEC), EC+dimethyl carbonate (DMC), propylene carbonate (PC)+DEC, and PC+DMC mixed by the volume ratio 1 to 1, respectively. The experimental results were in good agreement with −d[H2O]/dt=k[H2O]2[LiPF6]. We obtained rate constants (k) from this empirical equation, with k increasing in the order of EC+DMC

Author-supplied keywords

  • Decomposition
  • Electrolyte
  • Kinetics
  • LiPF6
  • Lithium ion battery
  • Water content

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  • Tetsuya Kawamura

  • Shigeto Okada

  • Jun-ichi Yamaki

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