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Información tecnológica

On-line version ISSN 0718-0764

Abstract

MORENO, Dora E  and  SUSTERSIC, María G. Potentiodynamic Current/Potential relationships for Electrochemical Formation of Yuxtaposed Layers. Inf. tecnol. [online]. 2007, vol.18, n.1, pp.23-30. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642007000100005.

The objective of this work is to analyze and to compare different models for electrochemical formation of mono and yuxtaposed-layer. In particular, the variation of electrode surface coverage as a function of time is studied for electroadsorption in reversible reactions. The basic model is that of Srinivasan-Gileadi. This has been extended by coupling a chemical dissolution process and an ohmic resistance. A model for multilayers formation elaborated taking into account the Srinivasan-Gileadi model for each of them and considering the ohmic resistance that each layer opposes to the electrical current has also been analyzed. Besides the surface coverage law, the behavior of the current/potential relation in the cases of mono and yuxtaposed-layers with and without ohmic resistance are considered. The influence of these variables in the peak potential is shown

Keywords : potentiodynamic relationships; yuxtaposed-layers; ohmic resistance; electrochemistry.

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