Abstract
A glassy carbon (GC) static disc electrode substrate was employed for both chronoamperometry and to study the morphological growth behaviour of cobalt in sulfate solutions containing 0.10 M and 0.50 M Co2+, at pH 2.5, and 60 °C. The effect of potentiostatic pulses on the initial stage of electrodeposition of cobalt is reported. The early stages of metal deposition were found to be controlled by three-dimensional instantaneous nucleation followed by hemispherical growth. The experimental findings for the growth mechanism matched well with the theoretical results and the 3D-growth of cobalt nuclei was confirmed by scanning electron microscopy (SEM).
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Mishra, K., Singh, P. & Muir, D. Nucleation during electrocrystallization of cobalt on glassy carbon (GC). Journal of Applied Electrochemistry 32, 1391–1396 (2002). https://doi.org/10.1023/A:1022680903893
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DOI: https://doi.org/10.1023/A:1022680903893