Abstract
In this paper, an impedance model is developed for simulating the discharge curve of LiFePO4 cathode material. The voltage drop is divided into three parts: the Ohm voltage drop, the charge transfer voltage drop and the diffusion voltage drop. A theoretical expression has been derived to predict the discharge curves at various discharge rates. The parameters of the equation have been obtained by fitting the results of EIS measurement, and a good agreement between the fitting and the experimental data has been found at all discharge rates.
Graphical Abstract
Keywords
LiFePO4, impedance model, fitting
Publication Date
2012-08-28
Online Available Date
2012-02-01
Revised Date
2012-01-19
Received Date
2011-11-24
Recommended Citation
Ming WANG, Jian-Jun LI, Xiang-Ming HE, Peng BAI, Gan WU, Chun-Rong WAN, Guang-Yu TIAN.
Discharge Curve Fitting of LiFePO4 Based on Impedance Model[J]. Journal of Electrochemistry,
2012
,
18(4): Article 4.
DOI: 10.61558/2993-074X.2921
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol18/iss4/4
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