Overpotential controls the morphology of electrolytically produced copper dendritic forms

Authors

  • Nebojša D. Nikolić ICTM-Department of Electrochemistry, University of Belgrade, Njegoševa 12, P.O.B. 473, Belgrade
  • Predrag M. Živković Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, P.O.B. 3503, 11001 Belgrade
  • Miomir G. Pavlović ICTM-Department of Electrochemistry, University of Belgrade, Njegoševa 12, P.O.B. 473, Belgrade
  • Zvezdana Baščarević Institute for Multidisciplinary Research, University of Belgrade, Kneza Višeslava 1a, Belgrade

DOI:

https://doi.org/10.2298/JSC190522066N

Keywords:

electrolysis, copper, powder, dendrite, scanning electron microscope (SEM)

Abstract

The morphologies of copper dendritic forms obtained in both poten­tio­static and galvanostatic regimes of electrolysis with various amounts of the electricity were analyzed by the scanning electron microscopy (SEM) tech­nique. Irrespective of amount of passed electricity, 3D (three dimensional) pine-like dendrites with sharp tips were formed in the potentiostatic regime of electrolysis. On the other hand, the amount of passed electricity had a strong effect on the shape of the 3D pine-like dendrites formed in the galvanostatic regime of electrolysis. Dendrites with sharp tips were formed with smaller amount of passed electricity, while dendrites with globular tips were formed with larger amounts. The change in the shape of the galvanostatically synthe­sized 3D pine-like dendrites was explained by comparison with copper deposits obtained potentiostatically at overpotentials that corresponded to the final over­potentials during galvanostatic regime of electrolysis for the analyzed amounts of electricity. Based on the similarity of the obtained morphologies at the macro level, it was concluded that the overpotential plays a crucial role in the formation of the electrolytically synthesized dendrites and that the controlled conditions of electrolysis could represent a suitable way for a synthesis of spherical Cu particles by electrolysis.

Author Biography

Zvezdana Baščarević, Institute for Multidisciplinary Research, University of Belgrade, Kneza Višeslava 1a, Belgrade

Institute for Multidisciplinary Research, University of Belgrade, Kneza Višeslava 1a, Belgrade

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Published

2019-12-03

How to Cite

[1]
N. D. Nikolić, P. M. Živković, M. G. Pavlović, and Z. Baščarević, “Overpotential controls the morphology of electrolytically produced copper dendritic forms”, J. Serb. Chem. Soc., vol. 84, no. 11, pp. 1209-1220, Dec. 2019.

Issue

Section

In Memoriam Issue Devoted to Prof. Konstantin Popov