Issue 36, 2011

Hydrogen electrocatalysis on overlayers of rhodium over gold and palladium substrates—more active than platinum?

Abstract

We have investigated the stability and catalytic activity of epitaxial overlayers of rhodium on Au(111) and Pd(111). Both surfaces show a strong affinity for hydrogen. We have calculated the energy of adsorption both for a strongly and a more weakly adsorbed species; the latter is the intermediate in the hydrogen evolution reaction. Both the energy of activation for hydrogen adsorption (Volmer reaction) and hydrogen recombination (Tafel reaction) are very low, suggesting that these overlayers are excellent catalysts.

Graphical abstract: Hydrogen electrocatalysis on overlayers of rhodium over gold and palladium substrates—more active than platinum?

Article information

Article type
Paper
Submitted
15 May 2011
Accepted
01 Aug 2011
First published
16 Aug 2011

Phys. Chem. Chem. Phys., 2011,13, 16437-16443

Hydrogen electrocatalysis on overlayers of rhodium over gold and palladium substrates—more active than platinum?

G. Soldano, E. N. Schulz, D. R. Salinas, E. Santos and W. Schmickler, Phys. Chem. Chem. Phys., 2011, 13, 16437 DOI: 10.1039/C1CP21565E

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