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 (Xc) of 26.83% and melting tem
perature (Tm) of 142.9 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 Scm-1 at 298 K for all optimized poly
mer 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 investi
gated at 0.5 C rate. The polymer electrolyte is a better candidate to perform in
lithium ion polymer batteries.