Journal of Solid State Electrochemistry

, Volume 10, Issue 6, pp 373–379 | Cite as

Morphology, internal structure and growth mechanism of electrodeposited Ni and Co powders

  • V. D. Jović
  • V. Maksimović
  • M. G. Pavlović
  • K. I. Popov
Original Paper


In this paper the morphology (SEM analysis), the internal structure (cross-section analysis) and the growth mechanism of Ni and Co powders electrodeposited from ammoniacal electrolyte are investigated. It is shown that morphology and the internal structure of those powders are quite different. For Ni powder, all particles are of the same morphology, cauliflower-like type. In the case of Co powder, generally two types of particles are detected: (1) dendrite particles and (2) different types of agglomerates, compact, spongy-like and ball-like ones. The growth mechanism for all agglomerates is based on the fact that with the time of growth the disperse (dendrite) agglomerate is branching in different directions and at the tip of each branch spherical diffusion takes over the planar one, providing conditions for the growth of compact deposit. After some time, these branches form compact deposit all over the agglomerate surface and the same agglomerate further grows as a compact one, until it falls off from the electrode surface. Characteristic of all agglomerates is the presence of deep cavities on their surface and the fern-like dendrites on the bottom for most of these cavities.


Ni Co Powders Dendrite particles Cauliflower-like particles Different agglomerates Growth mechanism 



This work was supported by the Ministry of Science and Environmental Protection of the Republic of Serbia under the research project “Electrodeposition of Metal Powders at a Constant and Periodically Changing Rate” (1806/2002).


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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • V. D. Jović
    • 1
  • V. Maksimović
    • 2
  • M. G. Pavlović
    • 3
  • K. I. Popov
    • 4
  1. 1.Center for Multidisciplinary StudiesUniversity of BelgradeBelgradeSerbia & Montenegro
  2. 2.Institute of Nuclear Science, “Vinča”BelgradeSerbia & Montenegro
  3. 3.ICTM, Institute of ElectrochemistryBelgradeSerbia & Montenegro
  4. 4.Faculty of Technology and MetallurgyUniversity of BelgradeBelgradeSerbia & Montenegro

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