DataVXACS Applied Energy MaterialsPaper
journal article·2023-09-11Open access

Assessing Utilization Boundaries for Pt-Based Catalysts in an Operating Proton-Exchange Membrane Fuel Cell

Michal Ronovsky, Lujin Pan, Malte Klingenhof, Isaac Martens, Lukas Fusek, Peter Kus, Raphael Chattot, Marta Mirolo, Fabio Dionigi, Harriet Burdett, Jonathan Sharman, Peter Strasser, Alex Martinez Bonastre, Jakub Drnec

ACS Applied Energy Materials· Volume 6· Issue 17
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Source abstract

Abstract

Octahedra (oh) PtNiX/C catalysts are notable cathode catalysts for proton-exchange membrane fuel cells due to their exceptional oxygen reduction reaction activity. Here, we investigate the degradation of oh-PtNiIr catalysts under fuel-cell conditions using operando X-ray diffraction (XRD). Employing two accelerated stress tests with different lower potential limits and XRD-coupled cyclic voltammetry on benchmark Pt and oh-PtNiIr catalysts, we find that dissolution and degradation are proportional to the extent of reduction, independent of the catalyst’s nature. Our method identifies the optimal potential range for Pt-based catalysts to minimize degradation without lengthy stress tests.
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Research context

Energy storageCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

The European Synchrotron Radiation Facility (ESRF), ID 31 Beamline, 38000 Grenoble, France

Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany

Faculty of Mathematics and Physics, Department of Surface and Plasma Science, Charles University, V Holešovičkách 2, 18000 Prague 8, Czech Republic

ICGM, Université Montpellier, CNRS, ENSCM, 34095 Montpellier Cedex 5, France

Johnson Matthey Technology Centre, Blount’s Court, Sonning Common, Reading RG4 9NH, United Kingdom

Funding

H2020 Marie Sklodowska-Curie Actions · Fuel Cells and Hydrogen Joint Undertaking

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