Non-equilibrium electrical behaviour of polymeric electrochemical junctions

Current oscillations were observed at constant applied voltage in electrochemical heterostructures, composed of conducting polymer, solid electrolyte and a charge accumulating system (graphite electrode or capacitor). These oscillations were attributed to the periodic modulation of the conductivity in the active zone of conducting polymer (polyaniline) due to ionic flow in the solid electrolyte (polyethylene oxide with LiClO4).