ArticleACS applied materials & interfaces2022
Structural Model for Transient Pt Oxidation during Fuel Cell Start-up Using Electrochemical X-ray Photoelectron Spectroscopy.
Article in ACS applied materials & interfaces, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed.
- Potential-Dependent Reversible Restructuring of Pt-Au Alloy Electrocatalysts.Small (Weinheim an der Bergstrasse, Germany) · 2026Article
- Microenvironment Engineering as a Design Principle for Suppressing Catalyst Metal Loss.Angewandte Chemie (International ed. in English) · 2026Article
- Time of Flight Secondary Ion Mass Spectrometry for Characterization of Pt-Coated Porous Transport Layers in PEM Water Electrolyzers.ACS applied nano materials · 2026Article
- Platinum surface oxides govern the cathodic overpotential of the oxygen reduction reaction.EES catalysis · 2026Article
- Probing charge-transfer processes in Pt/TiOProceedings of the National Academy of Sciences of the United States of America · 2026Article
- Designing the Platinum Catalyst Layer for Improved Performance and Durability in Anion Exchange Membrane Water Electrolysis.ACS applied materials & interfaces · 2026Article
- The Potential-Dependent Structure of PtACS catalysis · 2025Article
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3 authors.
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Abstract
Potential spikes during the start-up and shutdown of fuel cells are a major cause of platinum electrocatalyst degradation, which limits the lifetime of the device. The electrochemical oxidation of platinum (Pt) that occurs on the cathode during the potential spikes plays a key role in this degradation process. However, the composition of the oxide species formed as well as their role in catalyst dissolution remains unclear. In this study, we employ a special arrangement of XPS (X-ray photoelectron spectroscopy), in which the platinum electrocatalyst is covered by a graphene spectroscopy window, making the in situ examination of the oxidation/reduction reaction under wet conditions possible. We use this assembly to investigate the change in the oxidation states of Pt within the potential window relevant to fuel cell operation. We show that above 1.1 V
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