Temperature Effects on the Behavior of Lithium Iron Phosphate Electrodes
- Authors: Tusseeva E.K.1, Kulova T.L.1, Skundin A.M.1, Galeeva A.K.2, Kurbatov A.P.3
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Affiliations:
- Frumkin Institute of Physical Chemistry and Electrochemistry
- Center of Physical Chemical Methods of Research and Analysis
- Al-Farabi Kazakh National University
- Issue: Vol 55, No 3 (2019)
- Pages: 194-199
- Section: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/191930
- DOI: https://doi.org/10.1134/S1023193519020149
- ID: 191930
Cite item
Abstract
The systematic study of the effect of temperature (in the range from −45 to +60°C) on the process of lithium extraction from LiFePO4 and its insertion into FePO4 is carried out. At a current of about C/1.5, with decreasing temperature, the capacity decreases, the polarization increases, the range of compositions corresponding to nonequilibrium solid solutions widens, and the slope of the linear section of the galvanostatic curves corresponding to the two-phase system increases. The decrease in the capacity with decreasing temperature is not described by the simple Arrhenius equation. It is assumed that the process on the lithium iron phosphate electrodes has a mixed diffusion-activation nature. The polarization of the anodic and cathodic processes increases with decreasing temperature in a complicated way, and the polarization of the anodic process exceeds that of the cathodic process appreciably.
About the authors
E. K. Tusseeva
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: askundin@mail.ru
Russian Federation, Moscow, 119071
T. L. Kulova
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: askundin@mail.ru
Russian Federation, Moscow, 119071
A. M. Skundin
Frumkin Institute of Physical Chemistry and Electrochemistry
Author for correspondence.
Email: askundin@mail.ru
Russian Federation, Moscow, 119071
A. K. Galeeva
Center of Physical Chemical Methods of Research and Analysis
Email: askundin@mail.ru
Kazakhstan, Almaty
A. P. Kurbatov
Al-Farabi Kazakh National University
Email: askundin@mail.ru
Kazakhstan, Almaty