Mono- and multilayer formation studies of silver iodide on silver electrode from iodide-containing solutions

Cyclic voltammetric and single potential step current-time experiments were carried out on the silver electrode in order to understand the nature of kinetic processes involved during the mono- and multilayer formation of silver iodide. Two pre-peaks were noticed at potentials more negative to the multilayer formation and to the Ag/AgI reversible potential. These pre-peaks were found to arise during the monolayer formation of AgI via the adsorption-desorption processes. On the other hand, the multilayer formation of AgI processes occurs by instantaneous nucleation-growth.