This study examines the impact of SiO₂ nanofillers on electrochemical properties of a sodium triflate (NaCF₃SO₃)- based polymer electrolyte system, incorporating an EC-PC plasticizer within a PEO-PAM blend matrix. Polymer electrolyte films with the composition [PEO50 + PAM50 + 12.5 wt.% NaCF₃SO₃ + 15 wt.% (1:1 EC: PC) + x wt.% SiO₂] where x varying as 5, 7.5, 10, 12.5 and 15 wt.% were synthesized via solution cast technique. The structural and the morphological characteristics of these samples were analysed using dif-ferential Scanning Calorimetry (DSC) and Scanning Electron Microscopy (SEM). The electrical properties were investigated through impedance spectroscopy across a frequency range of 20 Hz to 2 MHz from and a temperature range from ambient conditions to 333 K. The results indicate an enhancement in conductivity with increasing nanofiller content, reaching a maximum ambient temperature conductivity of 2.51×10-5 S/cm at 12.5 wt.% SiO₂.

Nanofiller, Electrochemical Properties, SEM