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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/18531

Title: An electrical circuit for performance analysis of polymer electrolyte fuel cell stacks using electrochemical impedance spectroscopy
Authors: Cruz-Manzo, Samuel
Chen, Rui
Keywords: Electrical circuit
PEFC stack
EIS
Electrochemical mechanisms
Issue Date: 2013
Publisher: © Electrochemical Society
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.
Abstract: 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.
Description: 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
Version: Accepted for publication
DOI: 10.1149/2.025310jes
URI: https://dspace.lboro.ac.uk/2134/18531
Publisher Link: http://dx.doi.org/10.1149/2.025310jes
ISSN: 0013-4651
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

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