Comparing novel PGM-free, platinum, and alloyed platinum catalysts for HT-PEMFCs
Bevilacqua N, Gokhale R, Serov A, Banerjee R, Schmid M, Atanassov P, Zeis R (2018)
Publication Type: Conference contribution
Publication year: 2018
Journal
Publisher: Electrochemical Society Inc.
Book Volume: 86
Pages Range: 221-229
Conference Proceedings Title: ECS Transactions
Event location: Cancun, MEX
ISBN: 9781607688600
Abstract
Electrochemical Impedance Spectroscopy (EIS) constitutes a well-established method for characterizing the losses in a polymer electrolyte membrane fuel cell (PEMFC). However, without further analysis, the EI spectrum yields only qualitative insight into the mechanism and contribution of each of the losses in the fuel cell. The distribution of relaxation times (DRT) method allows the quantification of each process contributing to the performance loss in the cell. The application of aforementioned methods for various catalysts allows the explanation of performance differences of the investigated catalysts based on the respective contribution of each major loss mechanism. We tested a platinum (Pt) catalyst, a platinum-cobalt (Pt3Co) alloy catalyst, and a platinum group metal-free (PGM-free) iron-nitrogen-carbon (Fe-N-C) catalyst and found that the Oxygen Reduction Reaction (ORR) is not the dominant loss factor. Against our expectation, the mass transport loss in the PGM-free catalyst is severely dominating. The higher performance of the alloy catalyst can be explained by both, an improved mass transport and a lower ORR resistivity.
Authors with CRIS profile
Involved external institutions
Helmholtz Institut Ulm
Germany (DE)
University of New Mexico (UNM) / Universidad de Nuevo México
United States (USA) (US)
Germany (DE)
University of New Mexico (UNM) / Universidad de Nuevo México
United States (USA) (US)
How to cite
APA:
Bevilacqua, N., Gokhale, R., Serov, A., Banerjee, R., Schmid, M., Atanassov, P., & Zeis, R. (2018). Comparing novel PGM-free, platinum, and alloyed platinum catalysts for HT-PEMFCs. In D.J. Jones, H. Gasteiger, H. Uchida, T.J. Schmidt, F. Buechi, K.E. Swider-Lyons, B.S. Pivovar, P.N. Pintauro, V.K. Ramani, J.M. Fenton, P. Strasser, K.E. Ayers, A.Z. Weber, T.F. Fuller, R.A. Mantz, H. Xu, C. Coutanceau, S. Mitsushima, S. Narayan, P. Shirvanian, Y.-T. Kim, Y. Gochi-Ponce (Eds.), ECS Transactions (pp. 221-229). Cancun, MEX: Electrochemical Society Inc..
MLA:
Bevilacqua, N., et al. "Comparing novel PGM-free, platinum, and alloyed platinum catalysts for HT-PEMFCs." Proceedings of the Symposium on Polymer Electrolyte Fuel Cells and Electrolyzers 18, PEFC and E 2018 - AiMES 2018, ECS and SMEQ Joint International Meeting, Cancun, MEX Ed. D.J. Jones, H. Gasteiger, H. Uchida, T.J. Schmidt, F. Buechi, K.E. Swider-Lyons, B.S. Pivovar, P.N. Pintauro, V.K. Ramani, J.M. Fenton, P. Strasser, K.E. Ayers, A.Z. Weber, T.F. Fuller, R.A. Mantz, H. Xu, C. Coutanceau, S. Mitsushima, S. Narayan, P. Shirvanian, Y.-T. Kim, Y. Gochi-Ponce, Electrochemical Society Inc., 2018. 221-229.
BibTeX: Download