Electrical properties of melting-prepared polymer electrolyte/carbon composites

A new method of preparation of polymer electrolyte/ carbon composites is presented. Thermal and electrical properties of the materials are studied. The DSC analysis shows that the salt complexation by the polymer occurs at least semi-quantitatively. The electric behaviour characterized by impedance spectroscopy is described in terms of three distinct processes: interfacial, intraand inter-aggregates. An electrical equivalent circuit is proposed and the corresponding parameters are studied in function of carbon concentration and temperature.