Electrical properties of liquid ion-exchange membranes with dissociated sites

Summary The paper presents a theoretical investigation of electrodiffusion in a system composed of a liquid membrane, containing charged sites, interposed between two aqueous ionic solutions. The membrane is assumed to be permeable to both counterions and colons, the treatment being, however, restricted to the simple case in which only two monovalent ionic species, oppositely charged, are present in the membrane phase. The concentration profiles of the mobile species, the current-voltage relationship, the fluxes-voltage relationship and the asymptotic behavior of the membrane conductance are derived. The results obtained show the qualitative deviation of the behavior of such a system, as compared to that of a liquid coion excluding and of a fixed charge membrane.