Effect of Sinusoidal A.C. on the Kinetics of Cu/Cu2+ Reaction in Acidic Sulfate Solution

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Abstract
A study has been made of the effect of high amplitude a.c. on the kinetics of a copper rotating disk electrode in acidic copper sulfate solutions. It was found that the rest potential was shifted toward the negative direction, and the exchange current density and the Tafel slopes increased with the superimposition of a.c. A mathematical model which took into account the periodical change in the surface concentration, the double layer capacity, the surface and the ohmic overpotential, was proposed to explain the observed phenomena.

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