Effect of electrical conductivity studies for CuS nanofillers mixed magnesium ion based PVA-PVP blend polymer solid electrolyte

Nanostructured sodium alginate (Na Alg.) assisted CuS nanoparticles are synthesized by graceful microwave irradiation method. The prepared CuS nanofiller is mixed by means of magnesium ion conducting PVA:PVP blend electrolyte films with different compositions using solution casting method. All compositions are characterized to analyse its structural and thermal properties through X-ray Diffraction (XRD), Fourier Transform infrared (FTIR) and Thermo gravimetric and Differential Thermal analysis (TG/DTA) techniques. The electrical conductivity and dielectric properties are analyzed through electrical impedance measurements. Nanofillers mixed Mg:PVA:PVP blend polymer solid electrolyte exhibit maximum protonic conductivity of 1.847 × 10−3 Scm−1. Proton and magnesium ion based conducting solid electrolytes are more applicable for energy storage devices applications. •Na Alg. assisted CuS synthesized by microwave irradiation method and CuS nanofillered PVA:PVP:MgCl2 polymer films by solution casting method.•All composition of nanofiller mixed Mg:PVA-PVP blend polymer solid electrolyte are examined.•Electrical conductivity and dielectric properties are analyzed through electrical impedance measurements.•Nanofillers mixed Mg:PVA-PVP blend polymer solid electrolyte exhibit maximum protonic conductivity.•Mg:PVA-PVP based conducting electrolytes are more applicable for energy storage devices applications.