Abstract
Irreversible electrochemical co-adsorption of cations on two different kinds of active sites on the electrode surface has been studied theoretically for the conditions of the linear potential scan voltammetry (LPSV). The analytical expressions for the LPSV peak currents and peak potentials for the partial co-adsorption processes have been derived. The normalized, dimensionless LPSV characteristics have been computed using an implicit digital simulation procedure. The effect of the lateral self-interactions and exchange interactions, as well as effects of the kinetic parameters on the LPSV curves have been examined. An interesting phenomenon of splitting of the partial-current peak (for the adsorption reaction on one kind of active site) caused by coadsorption has been found. The potential distributions of the partial coverages have also been analyzed.
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