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Title: Analysis of the performance of an open-cathode polymer electrolyte fuel cell stack using simultaneous electrochemical impedance spectroscopy measurements
Authors: Cruz-Manzo, Samuel
Chen, Rui
Greenwood, Paul S.
Issue Date: 2014
Publisher: © The Electrochemical Society
Citation: CRUZ-MANZO, S., CHEN, R. and GREENWOOD, P., 2014. Analysis of the performance of an open-cathode polymer electrolyte fuel cell stack using simultaneous electrochemical impedance spectroscopy measurements. ECS Transactions, 48(1), pp.47-58.
Abstract: In this study, an analysis of the performance in a commercial opencathode polymer electrolyte fuel cell (PEFC) stack is conducted using simultaneous electrochemical impedance spectroscopy (EIS) measurements. The factors that limit the performance of the PEFC stack were evaluated with EIS measurements and the impedance model developed in the authors’ previous study. The results showed that adsorbed intermediate species during the oxygen reduction reaction (ORR) limit the PEFC stack performance. The activation overpotential in the stack was dominated by low electrocatalytic activity from one of the cells. The inhomogeneity of air flow rate for this particular PEFC stack played an important role in oxygen transport limitations and ohmic resistance. This study has demonstrated that simultaneous EIS is a powerful tool for in-situ diagnosis of a PEFC stack. This EIS understanding has enabled an assessment of the state of health and performance of the fuel cell stack.
Description: © The Electrochemical Society, Inc. 2014. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). This paper was also presented at the 13th International Conference on Advanced Batteries, Accumulators and Fuel Cells (ABAF 2012), August 26-30, Brno, Czech Republic.
Sponsor: The authors thank the Mexican National Council for Science and Technology (CONACYT) for the sponsorship of the Ph.D. research study of S. Cruz-Manzo (Grant no. 183195).
Version: Accepted for publication
DOI: 10.1149/04801.0047ecst
URI: https://dspace.lboro.ac.uk/2134/15683
Publisher Link: http://dx.doi.org/10.1149/04801.0047ecst
ISSN: 1938-5862
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

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