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Dynamics of electrocrystallization of dendritic zinc deposits in galvanostatic and potentiostatic modes

V. S. Nikitin, T. N. Ostanina, V. M. Rudoi, A. S. Farlenkov

Abstract


In the work the dynamics of growth of zinc dendritic deposits in the galvanostatic and potentiostatic modes from an electrolyte containing 0.3 mol/L of ZnO, and 4 mol/L of NaOH has been studied. It has been shown that in galvanostatic conditions decrease in the elongation rate of dendrites and change in the deposit structure from dendritic to compact accompanied by increasing density and decreasing through-thickness porosity are observed. In potentiostatic modes dendrites grow at a constant rate and the structure of the deposit varies little. The results have been confirmed by electron microscopic studies of morphology of zinc particles.

Keywords


electrocrystallization; zinc; dendritic; electrochemistry

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References


Neikov O, Naboychenko S. Handbook of non-ferrous metal powders: Technologies and applications. Naboychenko S, Mourachova I, Gopienko V, Frishberg I, Lotsko D, editors. Amsterdam: Elsevier; 2009. 634 p. ISBN: 978-1-85617-422-0.

Patrushev AV, Ostanina TN, Rudoy VM. Electrochemical methods for the determination of surface area of dendritic deposits. In: Proceedings of Phisycal chemistry and electrochemistry of molten and solid electrolytes. XVI Russian conference; 2013; Ekaterinburg, Russia. Russian.




DOI: http://dx.doi.org/10.15826/chimtech.2015.2.3.022

Copyright (c) 2015 V. S. Nikitin, T. N. Ostanina, V. M. Rudoi, A. S. Farlenkov

© Chimica Techno Acta, 2014-2018
ISSN 2411-1414 (Online), ISSN 2409-5613 (Print)

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