Conductivity studies on PVP:CH3COONa-Al2O3 based nanocomposite films

Aluminum doped nanocomposite polymer electrolytes were prepared with different molecular wt% ratios of sodium acetate by solution cast technique. DSC plot showed the shift in Tg of all the polymer films at 34.82, 34.02, 33.57 and 30.26 °C. The decline in Tg implies the expansion in the undefined idea of the films. The conductivity is found to be 1.03x10−3 S/cm at 373 K for the film with compositional ratio 80PVP:20CH3COONa+Al2O3(1%). The current OCV is diminished exponentially from 2.98 V. This might be due to the charge polarization that shapes at the electrolyte surfaces.