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Effect of added cobalt ion on copper ele

HUANG Hui, ZHOU Ji-yu

2026encopper electrowinningcobalt additivepolyanilinelead silver anodeelectrode polarizationsulfate electrolyte

Abstract

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Effect of added Co2+(aq) on copper electrowinning was studied using doped polyaniline (Pani) and Pb-Ag(1%) anodes and a stainless steel cathode. The presence of added Co2+(aq) in the electrolyte solution was found to decrease the anode potentials. The optimum level of Co2+(aq) concentration in the electrolyte, with respect to the maximum saving of power consumption, was established. Linear sweep voltammetry (LSV) was used to study the influence of added Co2+(aq) on the anodic processes in a copper sulfate-sulfuric acid electrolyte. The oxygen-evolution potential for Pani anode is depolarised at lower current densities (≤0.01 A/cm2) and attains saturation at ρ(Co2+)o≈0.789 g/L; whilst the oxygen-evolution potential for Pb-Ag(1%) anode is depolarised at higher current densities (≤0.02 A/cm2) and attains saturation at ρ(Co2+)o≈1.315 g/L. The preferred orientations of the copper deposits change from (220) to (111) with the addition of 0.394−0.789 g/L Co2+ but higher concentrations favor (220) orientation again.

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Cite This Work

@article{1aa2dadf-04ca-4e67-9086-597691190bf8,
  title={Effect of added cobalt ion on copper ele},
  author={HUANG Hui and ZHOU Ji-yu},
  year={2026},
  language={en}
}
TY  - JOUR
TI  - Effect of added cobalt ion on copper ele
AU  - HUANG Hui
AU  - ZHOU Ji-yu
PY  - 2026
LA  - en
ER  -

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