A solid polymer electrolyte system based on polyvinyl pyrrolidone (PVP) complexed with amino benzene sulphonic acid isomers have been prepared by solution casting technique. The conductivity measurements were carried out on these films as a function of frequency at various temperatures. The complex impedance spectroscopy results reveal that the high-frequency depressed semicircle is due to the bulk effect of the material. The conductivity is enhanced to the order of 10-6 S/cm upon increase in salt concentration at room temperature. The 2 and 4-amino benzene sulphonic acid enhances the conductivity of PVP by donating its proton from the sulphonic acid group very effectively. Thus the maximum ionic conductivity (8.44x 10-6 S/cm) is obtained for 9 mol% 2-amino benzene sulphonic acid (2ABSA) complexed PVP polymer electrolyte.
Polyvinyl pyrrolidone, 2, 3, 4-Amino benzene sulphonic acid, Impedance spectroscopy, Polymer electrolyte