Investigations on the ion transport mechanism in conducting polymer films

The change in the electrical properties were investigated as a function of relative humidity by several techniques (among them the electrochemical imp edance) for different ion-conducting polymers, sprayed as films on interdig itated gold electrodes. It was found that the equations valid for electroly tic solutions fit the experimental data. In particular, the Onsager equatio n, applied to the relevant parameters of the polymeric films, describes the change in the film resistance as a function of relative humidity satisfact orily. (C) 2000 Elsevier Science B.V. All rights reserved.