Artículo
Kinetic Study of the hydrogen electrode reaction on Bi-modified Platinum
Fecha de publicación:
01/2009
Editorial:
Electrochemical Society
Revista:
Journal of the Electrochemical Society
ISSN:
0013-4651
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The present work deals with a kinetic study of the hydrogen electrode reaction (HER) on a platinum electrode modified by bismuth adatoms in both cathodic and anodic range of overpotentials. Kinetic expressions previously derived for the Volmer-Heyrovsky-Tafel mechanism were modified in order to take into account the influence of bismuth. Thus, a modification of the adsorption energy of the reaction intermediate, described through the variation of the Frumkin interaction parameter, and a possible effect of inhibition on the active sites were included in the kinetic expressions. On this basis, the experimental results obtained in the overpotentials range -0.20 < h / V < 0.40 were successfully correlated through the variation of only four adjustable parameters, which dependence on the bismuth surface coverage were evaluated and discussed.
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Articulos(CCT - SANTA FE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - SANTA FE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - SANTA FE
Citación
Quaino, Paola Monica; Gennero, Maria Rosa; Chialvo, Abel Cesar; Kinetic Study of the hydrogen electrode reaction on Bi-modified Platinum; Electrochemical Society; Journal of the Electrochemical Society; 156; 1-2009; 167-173
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