Abstract

The present investigation involves the electrical characterization studies on three different systems namely system-I ((PMMA + PVDF)_y ? (Mg(CF₃SO₃)₂)_1-y, where 1-y = 60, 50, 40, 30 and 20 mol% respectively, System-II ((PMMA + PVDF) _y - (Mg(CF₃SO₃)₂)_1-y)_z-(EC) _1-z, where 1-z = 25, 20, 15, 10 and 5 mol % respectively and System-III (((PMMA + PVDF) _y - (Mg(CF₃SO₃)₂)_1-y)_z - (EC) _1-z)_b - (MgO) _1-b ,where1-b = 20, 15, 10 and 5 mol% respectively by solution-casting technique. In system III, the MgO nanofiller of 32 nm size prepared by wet chemical sol-gel method is added to arrive at nanocomposite solid polymer electrolyte system in four different compositions namely 1-b = 20, 15, 10 and 5 mol% respectively. AC complex impedance analysis as a function of frequency was carried out in the frequency range of 20 Hz to 10 MHz from room temperature to 350 K to arrive at best conducting composition.

Keywords

AC Impedance, Ionic conductivity, Solid polymer Electrolytes