Bijayalaxmi Panda, S.C. Das
The individual as well as the synergistic effect of depolarisers, such as H2SO4 (aq) and/or Fe2+ (aq) and/or Co2+ (aq) on copper electrodeposition has been studied. A comparison is made of their relative effects on anode potential, cell potential, current efficiency (CE), power consumption and deposit quality. Linear sweep voltammetry (LSV) has been used to study the cathodic and the anodic behaviours of the depolarisers during electrodeposition of copper. The lowest value in anode potential is observed in the presence of H2SO4 and Fe2+ (aq) together. The presence of either added Fe2+ (aq) or added Co2+ (aq) or both together polarises the cathode deposition potential of copper; the extent of polarisation is more prominent in the presence of only Fe2+ (aq). In contrast, the cathode deposition potential of copper is depolarised in the presence of H2SO4 in the electrolyte; the depolarisation increases when Fe2+ (aq) is added to the electrolyte containing sulfurous acid. X-ray diffraction data show the change in the relative growth of the preferred orientations of cathode copper deposits in the absence and the presence of H2SO4 (aq) and/or Fe2+ (aq) and/or Co2+ (aq) in the electrolyte solution. Scanning electron microscopy (SEM) results establish different surface morphology of the copper samples deposited in the presence of H2SO4/Fe2+ (aq)/Co2+ (aq)/Fe2+ (aq) and Co2+ (aq) in the electrolyte solution.
@article{fb545d80-797e-4a2f-9766-33539396ac2a,
title={Synergistic effects of added bivalent aq},
author={Bijayalaxmi Panda and S.C. Das},
year={2026},
language={en}
}TY - JOUR TI - Synergistic effects of added bivalent aq AU - Bijayalaxmi Panda AU - S.C. Das PY - 2026 LA - en ER -
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