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

Andrey Chekannikov; Svetlana Novikova; Tatiana Kulova; Alexander Skundin; Andrey Yaroslavtsev

doi:10.5599/jese.234

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

DOI: https://doi.org/10.5599/jese.234

Keywords: Cathode materials, Lithium ion battery, Lithium iron phosphate, Vanadium doping

Abstract

LiFe_1-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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