Physical and charge discharge behavior of facile PVDF-HFP nanocomposite microporous polymer electrolyte for lithium ion polymer batteries

Synthesized wurtzite ZnO nanostructures are incorporated on the poly (vinylidenefluoride-co-hexafluoropropylene) (PVdF-HFP) matrix, which improves the thermal as well as porosity nature of as obtained thin film nanocomposite microporous polymer membrane (nanoCMPM). The membrane shows a favorable effect on the crystallinity (X-c) of 26.83% and melting temperature (T-m) of 142.9 degrees C that improves the conductivity of polymer electrolytes. Its characteristics were examined by thermal studies. The optimized polymer membrane was found to have a high degree of porosity (76%) and excellent film strength. The membranes were prepared as a polymer electrolytes in soaking lithium percholoride (LiClO4) salt solution and ethylene carbonate (EC) as well as dimethylene carbonate (DMC) in 1: 1 (v/v) ratio as plasticizer to form gel type nanocomposite microporous polymer electrolytes (nanoCMPE). It shows the ionic conductivity in the order of 10(-3) S cm(-1) at 298 K for all optimized polymer electrolytes with different lithium salt electrolyte concentrations. The polymer membrane electrolyte has good compatibility and fabricates [LiCoO2/PVDF-HFP-ZnO-LiClO4/mesocarbon microbeads (MCMB)] as coin type cell. The charge-discharge characteristics as well as cell performance were investigated at 0.5 C rate. The polymer electrolyte is a better candidate to perform in lithium ion polymer batteries.

Automated summary

Synthesized wurtzite ZnO nanostructures incorporated into a PVdF-HFP matrix improve the thermal and porosity properties of the thin film nanocomposite microporous polymer membrane, showing favorable effects on crystallinity and melting temperature to enhance polymer electrolyte conductivity. The resulting polymer membrane demonstrates high porosity and strong film strength, with ionic conductivity suitable for use in lithium ion polymer batteries.