Microscopic modelling of absorption of dipoles in electrical double layer

Abstract

(i) A spin-1 model allowing for induced dipole moment effects is formulated. The analysis, within the mean-field approximation, is deduced and the identity with the earlier approach shown. (ii) A spin-1 model is analysed in order to describe competitive adsorption of solvent and organic molecules. In particular, adsorption of organic molecules in presence of two-state solvent and vice versa, and adsorption of three-state solvent dipoles are analysed and the appropriate equilibrium relations are derived. These are compared with earlier approaches. The approach to the study of phase transitions using this formalism is also indicated.