Electrochemical impedance spectroscopy as a diagnostic tool for high-temperature PEM fuel cells
Mack F, Laukenmann R, Galbiati S, Kerres JA, Zeis R (2015)
Publication Type: Conference contribution
Publication year: 2015
Journal
Publisher: Electrochemical Society Inc.
Book Volume: 69
Pages Range: 1075-1087
Conference Proceedings Title: ECS Transactions
Event location: Phoenix, AZ
ISBN: 9781607685395
Abstract
Electrochemical Impedance Spectroscopy (EIS) is used to investigate the impact of acid doping level, air stoichiometry, polymer membrane type, and catalyst material on the operation of Membrane Electrode Assemblies (MEA) for high-temperature polymer electrolyte membrane fuel cells (HT-PEMFCs). EIS spectra are recorded during operation and analyzed by means of an equivalent circuit model to separate the contributions of individual internal losses. Acid doping level in membrane and electrodes plays a major role for MEA performance. Air stoichiometry influences the MEA operation mainly by affecting the cathode mass transport and charge transfer losses. The investigated membrane materials have little effect on MEA performance, although differences are observed in the shapes of the EIS spectra. The use of a Pt3Co/C alloy catalyst improves the MEA performance to a record value of 707 mV at 200 mA cm-2 in the polarization curve.
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Germany (DE)How to cite
APA:
Mack, F., Laukenmann, R., Galbiati, S., Kerres, J.A., & Zeis, R. (2015). Electrochemical impedance spectroscopy as a diagnostic tool for high-temperature PEM fuel cells. In H. A. Gasteiger, A. Z. Weber, V. K. Ramani, T. F. Fuller, R. A. Mantz, H. Uchida, F. N. Buchi, M. Edmundson, C. Coutanceau, J. M. Fenton, S. Mitsushima, T. J. Schmidt, K. Shinohara, K. Swider-Lyons, D. J. Jones, B. S. Pivovar, K. E. Ayers, K. A. Perry, S. R. Narayanan, P. Strasser (Eds.), ECS Transactions (pp. 1075-1087). Phoenix, AZ, US: Electrochemical Society Inc..
MLA:
Mack, Florian, et al. "Electrochemical impedance spectroscopy as a diagnostic tool for high-temperature PEM fuel cells." Proceedings of the Symposium on Polymer Electrolyte Fuel Cells 15, PEFC 2015 - 228th ECS Meeting, Phoenix, AZ Ed. H. A. Gasteiger, A. Z. Weber, V. K. Ramani, T. F. Fuller, R. A. Mantz, H. Uchida, F. N. Buchi, M. Edmundson, C. Coutanceau, J. M. Fenton, S. Mitsushima, T. J. Schmidt, K. Shinohara, K. Swider-Lyons, D. J. Jones, B. S. Pivovar, K. E. Ayers, K. A. Perry, S. R. Narayanan, P. Strasser, Electrochemical Society Inc., 2015. 1075-1087.
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