Effect of Variation of Different Nano filler on Structural, Electrical, Dielectric and Transport Properties of Blend Polymer Nanocomposites

TL;DR

This study investigates how different nanofillers affect the structural, electrical, dielectric, and transport properties of blend polymer nanocomposites, revealing enhanced ionic conductivity and stability with specific nanofillers.

Contribution

It introduces a detailed analysis of nanofiller effects on polymer electrolytes, highlighting the impact of Er2O3 on conductivity and stability, which is novel in this context.

Findings

Highest ionic conductivity of ~2.3x10^-5 S/cm with Er2O3

Wide electrochemical stability window of ~3.5 V

Dielectric permittivity decreases with frequency

Abstract

In the present work, the effect of different nanofiller (BaTiO3, CeO2, Er2O3 or TiO2) on blend solid polymer electrolyte comprising of PEO and PVC complexed with bulky LiPF6 have been explored. The XRD analysis confirms the polymer nanocomposite formation. FTIR provides evidence of interaction among the functional groups of the polymer with the ions and the nanofiller in terms of shifting and changing peak profile. The highest ionic conductivity is ~2.3x10-5 S cm-1 with a wide electrochemical stability window of ~3.5 V for 10 wt. % Er2O3. The real and imaginary part of dielectric permittivity follows the identical trend of the decreasing value with increase in the frequency. The particle size and the dielectric constant shows an abnormal trend with different nanofiller. The ac conductivity follows the universal power law. An effective mechanism has been proposed to understand the nanofiller interaction with cation coordinated polymer in the investigated system.