CHARACTERIZATION OF PEO CONDUCTING POLYMER ELECTROLYTE COMPLEXED WITH KNO3 ALKALI SALT AND NB2O5 NANO-FILLER

Conducting solid phase polymer electrolyte (SPE) films were synthesized using solution casting technique. In the present study the polyethylene oxide [PEO] complexed with potassium nitrate [KNO₃] as alkali salt group and Nb₂O₅ as nano fillers with weight percentile [5-15%] ratios. The complexation of KNO₃ salt with the polymer matrix PEO has been characterized by X-Ray Diffraction, surface morphology, EDAX and AC conductivity studies. The AC conductivity measurements were done in the temperature range of 303K–333 K using AC conductivity set up. From electrical conductivity studies it is observed that the conductivity order increased from fifth order to third order.  The conductivity in polymer electrolyte system is due to ions of alkaline salts and Nb₂O₅ nano-fillers which are present in polymer matrix. Several electrical and dielectric characterizations were done for these films and the results will be discussed in detail.