Conductivity and Dielectric characterizations of nanofiller TiO2 dispersed PEO – PEG blend Nano Composite Polymer Electrolyte

Abstract:
A set of nanocomposite polymer electrolyte (NCPE) based on poly(ethylene oxide) (PEO) and poly(ethylene glycol) (PEG) blend polymer matrix with cation donor salt lithium perchlorate (LiClO4) and nano-filler titanium oxide (TiO2) was prepared by solution casting technique. The frequency-dependent impedance spectroscopy was used to estimate the ionic conductivity of the nanocomposite electrolyte systems. Furthermore the various dielectric parameters with respect to the filler concentration and temperatures were primarily investigated. The maximum ambient temperature conductivity of 6.15x10-5 Scm-1 was obtained for the nanocomposite of (72 % PEO–17 % PEG–11 % LiClO4)–5 % TiO2 by weight percentage. The dielectric permittivity and loss tangent are reasonably reliable with the conductivity. As obvious, all the composites obey the Arrhenius equation for the conductivity mechanism which confirms that the nanocomposite polymer electrolytes are thermally activated.