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An electrical circuit for performance analysis of polymer electrolyte fuel cell stacks using electrochemical impedance spectroscopy

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journal contribution
posted on 20.08.2015, 11:06 by Samuel Cruz-Manzo, Rui ChenRui Chen
In this study, a new electrical equivalent circuit is developed to evaluate the performance of polymer electrolyte fuel cell (PEFC) stacks using electrochemical impedance spectroscopy (EIS). Experimental EIS measurements were carried out in an open-cathode PEFC stack to validate the new electrical equivalent circuit. The electrical equivalent circuit developed in the authors’ previous study, which simulates the impedance response of a single PEFC, is applied to EIS measurements carried out in the open-cathode PEFC stack. However, it cannot reproduce EIS measurements with positive imaginary components at low frequencies. Thus, in this study, the electrical equivalent circuit is modified by adding electrical components which represent intermediate adsorbed species in a two-step electrochemical reaction as reported in the literature. The results show that the new electrical equivalent circuit can accurately reproduce the experimental EIS measurements and can give an insight into the factors that limit the performance of the PEFC stack. This new electrical equivalent circuit can enable an assessment of the state of health and performance of the fuel cell stacks.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

JOURNAL OF THE ELECTROCHEMICAL SOCIETY

Volume

160

Issue

10

Pages

F1109 - F1115 (7)

Citation

CRUZ-MANZO, S. and CHEN, R., 2013. An electrical circuit for performance analysis of polymer electrolyte fuel cell stacks using electrochemical impedance spectroscopy. Journal of the Electrochemical Society, 160 (10), pp. F1109 - F1115.

Publisher

© Electrochemical Society

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2013

Notes

This article was accepted for publication in the Journal of the Electrochemical Society [© Electrochemical Society]. The definitive version is available at: http://dx.doi.org/10.1149/2.025310jes

ISSN

0013-4651

Language

en