Abstract: Polyacrylonitrile (PAN) based polymer electrolyte membranes complexedwith Ammoniumhexafluorophosphate (NH4PF6) with different molar concentration are prepared by solution casting method. Increase in the amorphous nature by the addition of Ammonium salt and the formation of polymersalt complex are confirmed by X ray diffraction studies and infrared spectroscopy respectively. The glass…