Electrochemical Nucleation and Growth of Rhenium on Glassy Carbon in the KF-KBF4-B2O3-KReO4 Melt

The initial stages of rhenium electrocrystallization on the glassy carbon electrode from the KF-KBF4-B2O3-KReO4 (0.88 wt% Re) melt at 773 K were studied using cyclic voltammetry, chronoamperometry, and scanning electron microscopy (SEM). Cyclic voltammetry data indicated the presence of a nucleation...

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Bibliographic Details
Published in:Journal of the Electrochemical Society 2019, Vol.166 (16), p.D935-D939
Main Authors: Arkhipov, Stepan P., Apisarov, Alexey P., Grishenkova, Olga V., Isakov, Andrey V., Chernyshev, Aleksandr A., Zaikov, Yurii P.
Format: Article
Language:English
Online Access:Get full text
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Summary:The initial stages of rhenium electrocrystallization on the glassy carbon electrode from the KF-KBF4-B2O3-KReO4 (0.88 wt% Re) melt at 773 K were studied using cyclic voltammetry, chronoamperometry, and scanning electron microscopy (SEM). Cyclic voltammetry data indicated the presence of a nucleation process. Analysis of potentiostatic current transients and SEM images demonstrated that the electrocrystallization process occurs by the three-dimensional instantaneous nucleation with diffusion-controlled growth under the studied conditions. The Scharifker-Hills and Scharifker-Mostany theoretical models were used to calculate the nucleation parameters and the diffusion coefficient of rhenium ions.
ISSN:1945-7111
DOI:10.1149/2.0531916jes