Characterization of Plasticized Solid  Polymer Electrolyte by AC Impedance  Spectroscopy

N.Vijaya; D.Vinoth Pandi; S.Selvasekarapandian

Volume : II, Issue : IX, September - 2013

Characterization of Plasticized Solid Polymer Electrolyte by AC Impedance Spectroscopy

N. Vijaya, D. Vinoth Pandi, S. Selvasekarapandian

Abstract :

Solid polymer electrolytes based on poly (N–vinyl pyrrolidone) (PVP) as host polymer, ammonium chloride (NH4 Cl) as complexing salt, propylene carbonate (PC) and ethylene carbonate (EC) as plasticizers have been prepared by solution casting technique and their complex formation has been confirmed by Fourier Transform Infrared Spectroscopy. AC impedance measurements have been carried out on the samples to find out the conductivity of the films. The film containing 85 mol% PVP, 15 mol% NH4 Cl, 0.001 mol% of PC and EC each, has been found to have high ionic conductivity. The temperature dependent conductivity of the electrolyte with and without plasticizers appears to obey the Arrhenius Law. The activation energy of the plasticized polymer electrolyte, 85 mol% PVP:15 mol% NH4 Cl: 0.001 mol% PC:0.001 mol% EC is 0.517 eV, which is considerably lower than that of the film without the plasticizers. The dielectric behaviour of the electrolyte has been discussed.