Conductivity enhancement in Na+-blend electrolyte system via addition of (EC+PC) plasticizers

Effect of EC-PC plasticizers on electrochemical properties of sodium triflate (NaCF3SO3), based PEO-PAM blend electrolyte system has been investigated. Polymer electrolyte samples [PEO50 + PAM50 + 12.5 wt% NaCF3SO3 + x wt% (1:1/EC: PC)] plasticizers with x varying as 5, 10, 15, 20, 25 according to wt% have been prepared using solution cast technique. Differential Scanning Calorimetry has been used to characterize the samples. The electrical properties of materials are studied using impedance spectroscopy in the frequency range of 20 Hz to 2 MHz from room temperature to 333 K. The conductivity increases with the addition of plasticizer in the electrolyte films. Maximum ambient temperature conductivity of 5.74×10−4 S/cm is observed in sample with 15 wt% plasticizer.