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Abstract
The electrodeposition of nickel powders from different baths containing the same chemical constituents except for the anion was studied. The baths were based mainly on aqueous dilute solutions of nickel sulphate, chloride, iodide, nitrate and acetate. A detailed study was carried out to investigate the influence of these anions on the cathodic polarization curves, current efficiency, growth morphology and catalytic activity of the electrodeposited nickel powders. The characteristics tested were affected to different extents by the nature of the anion employed. X-ray diffraction studies proved that the deposited powders were very pure and had the face centered cubic structure with the orientations {111}, {200}, {220}, {222} and {311} respectively.
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