Electrochemical study of doped LiFePO4 as a cathode material for lithium-ion battery

  • Andrey Chekannikov Skolkovo Institute of Science and Technology, 100 Novaya str., Skolkovo, Odintsovsky district, 143025 Moscow Region and A.N. Frumkin Institute of Physical chemistry and Electrochemistry of the Russian Academy of Sciences, 31-4 Leninsky prospect, 119071 Moscow
  • Svetlana Novikova Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky prospect, Moscow 119071
  • Tatiana Kulova A.N. Frumkin Institute of Physical chemistry and Electrochemistry of the Russian Academy of Sciences, 31-4 Leninsky prospect, 119071 Moscow
  • Alexander Skundin A.N. Frumkin Institute of Physical chemistry and Electrochemistry of the Russian Academy of Sciences, 31-4 Leninsky prospect, 119071 Moscow
  • Andrey Yaroslavtsev Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky prospect, 11999 Moscow
Keywords: Cathode materials, Lithium ion battery, Lithium iron phosphate, Vanadium doping

Abstract

LiFe1-xVxPO4/C (x= 0.01, 0.03, 0.05, 0.1) composites had been obtained by sol-gel method and characterized with the use of the XRD-analysis, SEM and charge/discharge tests. The doping was shown to result in decrease of electrode polarization, and correspondingly in capacity increase at high C-rates.

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Published
21-04-2016