MULTICOMPONENT LAYER-BY-LAYER ELECTROCRYSTALLIZATION - CASCADE MODEL

A new model for describing electrochemical aggregation and growth via a layer-by-layer mode is described, where there are competing phases. The earlier version of ''the cascade approach'' is generalized to acco mmodate two components, i.e. phases A and B, growing with their own me chanisms of nucleation and accretion. The overlap corrections under su ch competing situations are made through an extended Avrami ansatz. Se veral possible outcomes are indicated including the exact predictions of the steady state limit for the current, exhibiting different Tafel regimes, with slopes determined by the relative importance of the para meters characterizing the A-on-A, A-on-B, B-on-A and B-on-B transition s. Special cases to reflect partial and total blocking of the growth o f one by the other are also discussed.