Artículos de revistas
Hydrogen Evolution Reaction on Nanostructures Electrodes—a Scenario on Stepped Silver Surfaces
Fecha
2017-11Registro en:
Juárez, M. F.; Avila, Milagros; Ruderman, Andres; Santos, Elizabeth del Carmen; Leiva, Ezequiel Pedro M.; et al.; Hydrogen Evolution Reaction on Nanostructures Electrodes—a Scenario on Stepped Silver Surfaces; Springer New York LLC; Electrocatalysis; 8; 6; 11-2017; 587-593
1868-5994
CONICET Digital
CONICET
Autor
Juárez, M. F.
Avila, Milagros
Ruderman, Andres
Santos, Elizabeth del Carmen
Leiva, Ezequiel Pedro M.
Oviedo, Oscar Alejandro
Resumen
We have investigated the scenario for the hydrogen evolution reaction at stepped silver surfaces in acid solutions at high overpotentials using a simple kinetic model. Two independent types of sites, at the steps and at the terraces, were considered. The rate constants for the Volmer and Heyrovsky reactions were estimated. Both reactions occur with rate constant about two orders of magnitude larger at step sites than at terrace sites. Calculations of the activation energy for these reactions using our theory of electrocatalysis give similar results. [Figure not available: see fulltext.].