In Situ Study of the Gas-Phase Electrolysis of Water on Platinum by NAP-XPS

In Situ Study of the Gas-Phase Electrolysis of Water on Platinum by NAP-XPS

Chasing down the active state: Near‐ambient‐pressure X‐ray photoelectron spectroscopy was used to study the surface of a Pt electrode during the oxygen evolution reaction (OER). A hydrated Pt metal phase with dissolved oxygen in the near‐surface region is OER‐active and considered to be the precurso...

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Veröffentlicht in:Angewandte Chemie International Edition 2013-10, Vol.52 (44), p.11660-11664
Hauptverfasser: Arrigo, Rosa, Hävecker, Michael, Schuster, Manfred E., Ranjan, Chinmoy, Stotz, Eugen, Knop-Gericke, Axel, Schlögl, Robert
Format: Artikel
Sprache:eng
Schlagworte:
Deactivation
Electrodes
Evolution
Mathematical analysis
Nafion
Platinum
Precursors
Surface chemistry
water electrolysis
X-ray photoelectron spectroscopy
X-rays
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Zusammenfassung:Chasing down the active state: Near‐ambient‐pressure X‐ray photoelectron spectroscopy was used to study the surface of a Pt electrode during the oxygen evolution reaction (OER). A hydrated Pt metal phase with dissolved oxygen in the near‐surface region is OER‐active and considered to be the precursor of the analytically detected PtO2, which is in fact the deactivation product of the electrode.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201304765