A Comparative Study of Equivalent Circuit Models for Electro-Chemical Impedance Spectroscopy Analysis of Proton Exchange Membrane Fuel Cells

Lei Zhao, Haifeng Dai, Fenglai Pei, Pingwen Ming, Xuezhe Wei and Jiangdong Zhou
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Lei Zhao: School of Automotive Studies, Tongji University, Shanghai 201804, China
Haifeng Dai: School of Automotive Studies, Tongji University, Shanghai 201804, China
Fenglai Pei: Shanghai Motor Vehicle Inspection Certification & Tech Innovation Center Co., Ltd., Shanghai 201804, China
Pingwen Ming: School of Automotive Studies, Tongji University, Shanghai 201804, China
Xuezhe Wei: School of Automotive Studies, Tongji University, Shanghai 201804, China
Jiangdong Zhou: Nantong Bing Energy Co., Ltd., Nantong 226500, China

Energies, 2022, vol. 15, issue 1, 1-16

Abstract: Electrochemical impedance spectroscopy is one of the important tools for the performance analysis and diagnosis of proton exchange membrane fuel cells. The equivalent circuit model is an effective method for electrochemical impedance spectroscopy resolution. In this paper, four typical equivalent circuit models are selected to comprehensively compare and analyze the difference in the fitting results of the models for the electrochemical impedance spectroscopy under different working conditions (inlet pressure, stoichiometry, and humidity) from the perspective of the fitting accuracy, change trend of the model parameters, and the goodness of fit. The results show that the fitting accuracy of the model with the Warburg element is the best for all under each working condition. When considering the goodness of fit, the model with constant phase components is the best choice for fitting electrochemical impedance spectroscopy under different inlet pressure and air stoichiometry. However, under different air humidity, the model with the Warburg element is best. This work can help to promote the development of internal state analysis, estimation, and diagnosis of the fuel cell based on the equivalent circuit modeling of electrochemical impedance spectroscopy.

Keywords: proton exchange membrane fuel cell; electrochemical impedance spectroscopy; equivalent circuit model; comparative study (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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