Ion conducting polymer electrolyte films based on (PEO+KNO3) system and its application as an electrochemical cell

Ion conducting polymer electrolyte films based on poly (ethylene oxide) (PE O) complexed with potassium nitrate (KNO3) have been prepared by solution-c ast technique. The complexation of KNO3 salt with the polymer PEO has been confirmed by X-ray diffraction (XRD) and Infrared (IR) studies. DC conducti vity in the temperature range 303-373 K and transference number measurement s have been employed to investigate the charge transport in this polymer el ectrolyte system. Transport number data have shown that the charge transpor t in this polymer electrolyte system is predominantly due to ions. Using th is polymer electrolyte, solid state electrochemical cells have been fabrica ted. Various cell parameters associated with these cells are evaluated and reported. (C) 1999 Elsevier Science S.A. All rights reserved.