Abstract

VELASCO, Jaime González. A New Formulation of the Frequency Factor in the Expression for the Rate Constant of Interfacial Charge Transfers . Port. Electrochim. Acta [online]. 2007, vol.25, n.3, pp.293-318. ISSN 0872-1904.

A new way for deriving the fundamental equation of the electrochemistry has been developed in the potential range in which Butler-Volmer behaviour is found. In this approach the frequency factor is considered to be a function of the potential instead of the activation energy. The frequency factor is calculated by means of a classical statistical mechanics treatment giving rise to a new definition for the symmetry factor. A new expression for the standard rate constant in adiabatic heterogeneous charge transfer reactions has been derived.

Keywords : heterogeneous charge transfer; standard rate constant; potential dependent frequency factor.

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