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
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
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
