Temperature Effects on the Behavior of Lithium Iron Phosphate Electrodes
- 作者: Tusseeva E.1, Kulova T.1, Skundin A.1, Galeeva A.2, Kurbatov A.3
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隶属关系:
- Frumkin Institute of Physical Chemistry and Electrochemistry
- Center of Physical Chemical Methods of Research and Analysis
- Al-Farabi Kazakh National University
- 期: 卷 55, 编号 3 (2019)
- 页面: 194-199
- 栏目: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/191930
- DOI: https://doi.org/10.1134/S1023193519020149
- ID: 191930
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详细
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.
作者简介
E. Tusseeva
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: askundin@mail.ru
俄罗斯联邦, Moscow, 119071
T. Kulova
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: askundin@mail.ru
俄罗斯联邦, Moscow, 119071
A. Skundin
Frumkin Institute of Physical Chemistry and Electrochemistry
编辑信件的主要联系方式.
Email: askundin@mail.ru
俄罗斯联邦, Moscow, 119071
A. Galeeva
Center of Physical Chemical Methods of Research and Analysis
Email: askundin@mail.ru
哈萨克斯坦, Almaty
A. Kurbatov
Al-Farabi Kazakh National University
Email: askundin@mail.ru
哈萨克斯坦, Almaty