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Some adsorption-nucleation-based models for electrochemical phase formation

Bosco, E and Rangarajan, SK (1981) Some adsorption-nucleation-based models for electrochemical phase formation. In: Journal of the Chemical Society-Faraday Transactions, 77 (7). pp. 1673-1696.

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A new class of models which are based on adsorption, nucleation growth and their coupling is discussed. In particular, the potentiostatic response of a model that involves nucleative phase growth via direct incorporation and adsorptive discharge of metal ions on the free area is analysed for both instantaneous and progressive nucleation. This model is able to predict certain experimental features in the potentiostatic transient, like the initial fall, shoulder or maximum (as well as minimum) which have not been predicted by models analysed hitherto.Limiting behaviour for short and long times as well as a description of the above-mentioned features in terms of model parameters are given.A special case of the above model, viz. a reversible adsorption–nucleation model, wherein the adsorption is very fast, is shown to give rise to transients which can be distinguished from the pure nucleation-growth transients only by its parametric dependence, but not by the form.

Item Type: Journal Article
Publication: Journal of the Chemical Society-Faraday Transactions
Publisher: Royal Society of Chemistry
Additional Information: Copyright of this article belongs to Royal Society of Chemistry.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 17 Feb 2012 06:05
Last Modified: 17 Feb 2012 06:05
URI: http://eprints.iisc.ac.in/id/eprint/43269

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