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

doi:10.1134/S1023193518030072

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 journal › Article › peer-review

2 Scopus citations

Abstract

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 language	English
Pages (from-to)	225-233
Number of pages	9
Journal	Russian Journal of Electrochemistry
Volume	54
Issue number	3
DOIs	https://doi.org/10.1134/S1023193518030072
State	Published - 1 Mar 2018
Externally published	Yes

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.

Keywords

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

Access to Document

10.1134/S1023193518030072

Cite this

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title = "Chemical Oxidation of LiFePO4 in Aqueous Medium as a Method for Studying Kinetics of Delithiation",

abstract = "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.",

keywords = "activation energy, aqueous solution, cathode, diffusion coefficient, kinetics, lithium iron phosphate, oxidation",

author = "Kurbatov, {A. P.} and Malchik, {F. I.} and Galeyeva, {A. K.} and Davydchenko, {D. S.} and Rakhimova, {A. K.} and Lepikhin, {M. S.} and Kamysbayev, {D. Kh}",

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doi = "10.1134/S1023193518030072",

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T1 - Chemical Oxidation of LiFePO4 in Aqueous Medium as a Method for Studying Kinetics of Delithiation

AU - Kurbatov, A. P.

AU - Malchik, F. I.

AU - Galeyeva, A. K.

AU - Davydchenko, D. S.

AU - Rakhimova, A. K.

AU - Lepikhin, M. S.

AU - Kamysbayev, D. Kh

PY - 2018/3/1

Y1 - 2018/3/1

N2 - 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.

AB - 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.

KW - activation energy

KW - aqueous solution

KW - cathode

KW - diffusion coefficient

KW - kinetics

KW - lithium iron phosphate

KW - oxidation

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SN - 1023-1935

VL - 54

SP - 225

EP - 233

JO - Russian Journal of Electrochemistry

JF - Russian Journal of Electrochemistry

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