Theoretical aspects of 2D electrochemical phase formation

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...

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Bibliographic Details
Published inJournal of solid state electrochemistry Vol. 25; no. 2; pp. 689 - 694
Main Authors Isaev, Vladimir A., Grishenkova, Olga V., Zaikov, Yury P.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.02.2021
Springer Nature B.V
Subjects
Analytical Chemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Crystallization
Current density
Electrochemistry
Energy Storage
Morphology
Nucleation
Original Paper
Physical Chemistry
2D deposit layer
Electrodeposition
Nucleation
Growth
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Summary: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.
ISSN:1432-8488
1433-0768
DOI:10.1007/s10008-020-04847-0