Kinetics of copper dissolution and deposition in aqueous sulphate solution |
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Authors: | T Hurlen G Ottesen A Staurset |
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Affiliation: | Department of Chemistry, University of Oslo, Oslo, Norway |
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Abstract: | Galvanostatic single-pulse, rotating-disc and chronopotentiometric measurements on etched polycrystalline copper electrodes in semimolar mixed solutions of CuSO4, MgSO4 and H2SO4 at 25°C have yielded kinetic parameters and specific rate data for either of the two consecutive charge-transfer steps of the Cu(I)/Cu(II) electrode. The ion-transfer step Cu/Cu(I), but not the electron-transfer step Cu/Cu(II), depends on a surface factor for crystal growth and demolition. Some information on this factor is obtained. Comparisons are made to the solid Ni/Ni(II) electrode and to the liquid Cu(Hg)/Cu(II) electrode. |
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