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- Title
Theoretical aspects of 2D electrochemical phase formation.
- Authors
Isaev, Vladimir A.; Grishenkova, Olga V.; Zaikov, Yury P.
- Abstract
Two-dimensional electrochemical phase formation as a result of nucleation, growth, and overlap of disk-shaped nuclei of a new phase on the electrode surface is analyzed. This problem is considered based on the Kolmogorov-Johnson-Mehl-Avrami (KJMA) theory. General formulae applicable for any type of two-dimensional crystallization are derived. The theory of the double-pulse potentiostatic method is considered. Theoretical expressions are obtained for potentiostatic current density transients in the case of two-dimensional electrocrystallization at different durations and magnitudes of the first and second pulses (nucleation and growth pulses, respectively). The maxima of the current density transients are analyzed to obtain information about the mechanisms and parameters of nucleation and growth. The morphology of a continuous deposit layer is discussed in terms of Voronoi cells.
- Subjects
DISCONTINUOUS precipitation; ELECTROCRYSTALLIZATION; NUCLEATION; CRYSTALLIZATION
- Publication
Journal of Solid State Electrochemistry, 2021, Vol 25, Issue 2, p689
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-020-04847-0