Ion-conducting polymer electrolyte based on poly (ethylene oxide) complexed with NaNO3 salt-application as an electrochemical cell

Abstract Solid polymer electrolyte films based on poly (ethylene oxide) (PEO) complexed with sodium nitrate (NaNO 3 ) have been prepared by a solution-cast technique. The complexation of NaNO 3 salt with PEO has been confirmed by X-ray diffraction, infrared (IR) and optical microscopic studies. Measurements of the dc conductivity in the temperature range 303 to 373 K and the transference numbers have been carried out to investigate the charge transport in this polymer electrolyte system. Transport number data show that the charge transport in this polymer electrolyte system is predominantly due to ions. Using the polymer electrolyte, solid-state electrochemical cells have been fabricated. The various cell parameters are evaluated and reported.