Promotional Effect of Palladium on the Hydrogen Oxidation Reaction at a PtPd Alloy Electrode

A volcano curve is observed for the hydrogen oxidation reaction (HOR) as a function of the Pd content of alloyed PtPd electrodes. The maximum exchange current density was obtained for Pt72Pd28, and the results indicate that PdHx species (hydrogen gas spontaneously adsorbed to Pd; see picture) causes...

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Veröffentlicht in:	Angewandte Chemie International Edition 2008-11, Vol.47 (48), p.9307-9310
Hauptverfasser:	Yoo, Sung Jong, Park, Hee‐Young, Jeon, Tae‐Yeol, Park, In‐Su, Cho, Yong‐Hun, Sung, Yung‐Eun
Format:	Artikel
Sprache:	eng
Schlagworte:	electrochemistry fuel cells hydrogen oxidation palladium platinum
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	A volcano curve is observed for the hydrogen oxidation reaction (HOR) as a function of the Pd content of alloyed PtPd electrodes. The maximum exchange current density was obtained for Pt72Pd28, and the results indicate that PdHx species (hydrogen gas spontaneously adsorbed to Pd; see picture) causes the electronic structure of Pt to be favorable for the HOR.
ISSN:	1433-7851 1521-3773
DOI:	10.1002/anie.200802749