Study of the Thermal Stability and Ionic Conductivity of Polystyrene-Co-Acrylonitrile Based Composite Solid Polymer Electrolytes Incorporated with different Lithium Salts

  • SV Ganesan Department of Chemistry, Saraswathi Narayanan College, Madurai, Tamil Nadu, India
  • M Selvamurugan Department of Energy Science, Alagappa University, Karaikudi, Tamil Nadu, India
  • M Thamima Department of Energy Science, Alagappa University, Karaikudi, Tamil Nadu, India
  • S Karuppuchamy Department of Energy Science, Alagappa University, Karaikudi, Tamil Nadu, India
  • KK Mothilal Associate Professor and Head, Research and PG Department of Chemistry, Saraswathi Narayanan College, Madurai, Tamil Nadu, India
Keywords: Polymer Blend Electrolytes, FT-IR, Thermal Studies, Li Ion Battery, PVA

Abstract

In the present study, a series of poly(styrene-co-acrylonitrile) (SAN) polymer electrolytes and SAN- poly(vinyl alcohol) (PVA) polymer blend electrolytes were prepared with different lithium salts using a solvent casting technique. TG & DSC studies were carried out to investigate the thermal stability of the polymer blend electrolytes. Ionic conductivities of these electrolytes were measured by AC impedance spectroscopy. Results for conductivity studies have shown that the polymer with SAN/PVA complex with 5 % LiBr exhibits the highest conductivity of 8.7 × 10−5 S/cm at 70°C. The temperature dependence of the polymer electrolyte films obeys Arrhenius relation.

Published
2021-05-15
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