Influence of Al2O3 nanofiller on the properties of polymer electrolyte based on poly-ε-caprolactone

摘要: Nanocomposite polymer electrolytes (NCPE), with varying concentrations of Al2O3 nanofiller in an optimized composition containing 75:25 wt% ratio poly-e-caprolactone (PCL) and zinc trifluoromethanesulfonate (ZnTr), were prepared by solution casting method. A maximum ionic conductivity 2.5 × 10−5 S cm−1 was achieved at room temperature for 5 loading the nanofiller. Crystalline peaks observed X-ray diffraction pattern deconvoluted from amorphous halo to estimate degree crystallinity NCPEs. Scanning electron microscopic evaluation indicated reduction spherulite size NCPE incorporation Cationic transference number (\(t_{{{\text{Zn}}^{2 + } }}\)) typical found be >0.5, whereas decomposition voltage electrolyte increased 2.7 V The could used fabricate eco-friendly primary as well secondary battery systems.