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Constanze Donner

Kinetics of Electrochemical Phase Formation in Two-Dimensional Systems

Keywords: Homogeneous Nucleation, Heterogeneous Nucleation, Growth, Nonstationarity, Truncated Nucleation

The review provides an overview on the modelling concepts of first-order phase transition kinetics for Faradaic and capacitive systems. The basics of homogeneous and heterogeneous nucleation are considered. Special attention is paid to the role of a time-dependent supersaturation.
The whole kinetics in a thermodynamic open system includes transport processes. They cannot be separated from nucleation and growth processes.
Depending on the reaction pathways as well as on the rate-determining steps a line of models is evaluated, which reflect the actual kinetics in a suitable accuracy. The differentiation of the models can be made according to parallel and consecutive pathways.
Parallel reaction pathways occur according to competitive and noncompetitive mechanism.
Consecutive pathways distinguish between surface-diffusion controlled and adsorption controlled kinetics.

Zeitschrift für Physikalische Chemie, Oldenbourg Wissenschaftsverlag

Print ISSN: 0942-9352
Volume: 220, 03/2006
Pages: 265 - 304

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