Artículo
Analysis of the use of voltammetric results as a steady state approximation to evaluate kinetic parameters of the hydrogen evolution reaction
Fecha de publicación:
11/2005
Editorial:
Elsevier
Revista:
Electrochimica Acta
ISSN:
0013-4686
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The use of the voltammetric response jvol(η) of a potentiodynamic sweep at a slow scan rate vs in place of a steady state polarization curve jss(η) for the determination of the kinetic parameters of the hydrogen evolution reaction is analyzed. It is proposed to consider jvol(η, vs) ∼= jss(η) when the condition 0.99 ≤ jvol(η, vs)/jss(η) ≤ 1.01 is verified in the overpotentials range η≤−0.05V. It has been also established a simple relationship between the maximum admissible scan rate vmax s and the equilibrium polarization resistance Rp. Finally, the application of this criterion on different electrodes is described and discussed.
Palabras clave:
Hydrogen Reactions
,
Numerical Simulations
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Articulos(INTEC)
Articulos de INST.DE DES.TECNOL.PARA LA IND.QUIMICA (I)
Articulos de INST.DE DES.TECNOL.PARA LA IND.QUIMICA (I)
Citación
Marozzi, Carlos Alberto; Canto, Mario Ruben; Costanza, Vicente; Chialvo, Abel Cesar; Analysis of the use of voltammetric results as a steady state approximation to evaluate kinetic parameters of the hydrogen evolution reaction; Elsevier; Electrochimica Acta; 51; 4; 11-2005; 731-738
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