Abstract
A theoretical treatment of the transients obtained in potentiostatic single pulse experiments on metal alloy/metal ion electrodes coupled to a redox reaction is presented. Formulas have been derived for the concentration of the electrochemically active component in the alloy and of the corresponding metal ions of different valent state which form the redox couple in the electrolyte, respectively, as a function of the distance from the interface and the duration of the voltage pulse. Expressions for the partial current densities carried by the two consecutive charge‐transfer reactions, and , and for the total current density flowing through the cell have been worked out. Analysis of the current density transients on the basis of these expressions allows interpretation of experimental curves in terms of the characteristic kinetic parameters of the electrochemical system.
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