Chemical Oxidation of LiFePO4 in Aqueous Medium as a Method for Studying Kinetics of Delithiation

A. P. Kurbatov, F. I. Malchik, A. K. Galeyeva, D. S. Davydchenko, A. K. Rakhimova, M. S. Lepikhin, D. Kh Kamysbayev

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The kinetics of LiFePO4 oxidation by hydrogen peroxide in aqueous alkaline medium is studied with the use of potentiometric determination of lithium concentration in solution during delithiation. It is demonstrated that the lithium transfer through the reaction-product layer is controlled by diffusion. The activation energy and the diffusion coefficient of the species transferred in the solid phase during the chemical reaction of oxidative delithiation are determined and the parameters of this processes are analyzed.

Original languageEnglish
Pages (from-to)225-233
Number of pages9
JournalRussian Journal of Electrochemistry
Issue number3
StatePublished - 1 Mar 2018
Externally publishedYes

Bibliographical note

Funding Information:
ACKNOWLEDGEMENTS This study was financially supported by the Kazakhstan government (grants 0143/PTF and 4186/GF4).

Publisher Copyright:
© 2018, Pleiades Publishing, Ltd.


  • activation energy
  • aqueous solution
  • cathode
  • diffusion coefficient
  • kinetics
  • lithium iron phosphate
  • oxidation


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