Hydrogen electrocatalysis on overlayers of rhodium over gold and palladium substrates - More active than platinum?

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. © 2011 the Owner Societies.

Palabras clave: Hydrogen , Electrocatalysis , Rhodium , Palladium

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Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)

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URI: http://hdl.handle.net/11336/66961

DOI: https://dx.doi.org/10.1039/C1CP21565E

URL: https://pubs.rsc.org/en/Content/ArticleLanding/2011/CP/c1cp21565e

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Articulos(CCT - BAHIA BLANCA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - BAHIA BLANCA

Articulos(IFEG)
Articulos de INST.DE FISICA ENRIQUE GAVIOLA

Citación

Soldano, Germán; Schulz, Eduardo Nicolás; Salinas, Daniel Ricardo; Santos, Elizabeth del Carmen; Schmickler, Wolfgang; Hydrogen electrocatalysis on overlayers of rhodium over gold and palladium substrates - More active than platinum?; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 13; 36; 9-2011; 16437-16443

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