Electrical, dielectric and electrochemical studies on new Li ion conducting solid polymer electrolytes based on polyethylene glycol p-tert-octylphenyl ether

Abstract

The aim of this work is to study the effect of non-ionic short chain liquid polymer on the conductivity of PVA-LiClO4 membrane. Polyethylene glycol p-tert-octylphenyl ether (Triton X-100) is used as an additive with different concentrations in PVA-LiClO4 matrix. The conductivity of additive incorporated polymer electrolyte increases to two orders of magnitude than the pristine polymer electrolyte. The maximum conductivity is measured to be 1.92 mS/cm at ambient temperature. The conductivity enhancement is correlated with the availability of free ions as well as segmental motion of polymer chain with the aid of FTIR and Dielectric relaxation tools. DC polarization and cyclic voltammetry techniques are also carried out to check the suitability of prepared polymer electrolytes as electrolyte material for batteries.