Potential application of microporous structured poly(vinylidene fluoride-hexafluoropropylene)/poly(ethylene terephthalate) composite nonwoven separators to high-voltage and high-power lithium-ion batteries

► Microporous-structured PVdF-HFP/PET composite nonwoven separators for Li-batteries. ► Well-developed microporous structure and liquid electrolyte wettability. ► Provision of facile ion transport and suppressed growth of cell impedance. ► Superior cell performance at high-voltages/high-current densities.