Influence of pH on nickel electrodeposition at low nickel(II) concentrations |
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Authors: | W. G. Proud E. Gomez E. Sarret E. Valles C. Müller |
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Affiliation: | (1) Departament de Química Física, Universitat de Barcelona, Martí i Franques 1, 08028 Barcelona, Spain |
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Abstract: | The effect of pH on the nucleation stages of nickel electrodeposition on vitreous carbon has been analysed using low nickel concentrations, without additives. The experimental results indicated that there was a change in the electrochemical response of the system at 4 < pH < 4.5. A predischarge adsorption ascribed to nickel(II) species was observed with a different surface coverage depending on the pH. Moreover, different inhibition and 3D nucleation processes were detected in varying experimental conditions. |
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