Abstract
The theoretical current-time curves at constant potential on spherical and plane electrodes have been derived in the case that the depolarizer and the product of the electrode reaction are adsorbed on the electrode surface according to linear isotherms. Under the assumption that the adsorption coefficients are independent of potential, the theoretical treatment shows that a maximum in the voltammetric curves is to be expected both for slow and fast charge transfer processes, if the adsorption coefficient of the depolarizer is sufficiently high and greater than that of the product of the electrode reaction, the latter condition being required only for a Nernstian charge transfer. Possible differences between faradaic and directly measurable currents have been examined, in view of the concept of charge separation or recombination.
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