The effect of silica nanoparticles on improving the performance of poly (vinyl alcohol) separators in lithium batteries

In this research, pure and composite separators based on poly (vinyl alcohol) (PVA) and silica nanoparticles were made by using non-solvent induced phase separation (NIPS) method. The research carried out includes X-ray Diffraction (XRD) analysis, Energy dispersive X-ray spectroscopy (EDX) analysis and charge and discharge analysis of the resulting lithium-ion batteries. The results obtained indicate improved performance, with the presence of silica nanoparticles leading to enhanced lithium-ion battery discharge capacity density. According to the battery charge and discharge analysis, at rates of ۰.۱ C, ۰.۲ C, ۰.۵ C the discharge capacity density for a lithium-ion battery consisting ۳ wt% of silica nanoparticles was ۲۰۰, ۱۸۸, ۱۷۴ mA h g-۱.