Selective hydrogen oxidation catalyst for reduced startup/shutdown degradation in low temperature fuel cells

Julien Durst, Alin Orfanidi, Philipp J. Rheinländer, Frédéric Hasché, Christian Eickes, Peter Suchsland, Matthias Binder, Hubert A. Gasteiger

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

15 Scopus citations

Abstract

In this study, we are reporting for the first time clear evidence that Ir-based electrocatalysts are feasible alternatives to state-of-the-art Pt/C anode catalysts for PEMFC applications. While Ir/C has almost the same hydrogen oxidation activity as Pt/C, so that only minor voltage penalties are observed in H2/air performance curves (<20 mV at 1.5 A/cmgeo2 at 0.1 mgmetal/cm2), its oxygen reduction activity is substantially lower. Therefore, a replacement of Pt/C with Ir/C anodes would be expected to result in lower startup/shutdown (SUSD) damages. It will be shown that indeed 3-fold lower SUSD degradation rates are obtained with Ir/C compared to Pt/C anodes.

Original languageEnglish
Title of host publicationPolymer Electrolyte Fuel Cells 15, PEFC 15
EditorsH. 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
PublisherElectrochemical Society Inc.
Pages67-76
Number of pages10
Edition17
ISBN (Electronic)9781607685395
DOIs
StatePublished - 2015
EventSymposium on Polymer Electrolyte Fuel Cells 15, PEFC 2015 - 228th ECS Meeting - Phoenix, United States
Duration: 11 Oct 201515 Oct 2015

Publication series

NameECS Transactions
Number17
Volume69
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

ConferenceSymposium on Polymer Electrolyte Fuel Cells 15, PEFC 2015 - 228th ECS Meeting
Country/TerritoryUnited States
CityPhoenix
Period11/10/1515/10/15

Fingerprint

Dive into the research topics of 'Selective hydrogen oxidation catalyst for reduced startup/shutdown degradation in low temperature fuel cells'. Together they form a unique fingerprint.

Cite this