IMPEDANCE ANALYSIS OF ELECTRONICALLY CONDUCTING POLYMERS

We discuss in detail the equivalent circuits used to model the impedan ce of electronically conducting polymer systems and the procedure for the impedance analysis of these systems to account for deviation from the ideal behaviour. Impedance spectra of pyrrole-based and thiophene- based polymers of different thickness and at different values of injec ted charge in cells with liquid electrolytes and solid polymer electro lytes are reported, and the electrochemical parameters are evaluated a nd discussed.