Evaporation-induced, close-packed silica nanoparticle-embedded nonwoven composite separator membranes for high-voltage/high-rate lithium-ion batteries: Advantageous effect of highly percolated, electrolyte-philic microporous architecture

▸ Evaporation-induced, close-packed SiO2-embedded PET nonwoven composite separators. ▸ Well-connected interstitial voids are formed between close-packed SiO2 nanoparticles. ▸ Evolution of highly percolated, electrolyte-philic microporous architecture. ▸ Composite separator exhibits better cell performance than a commercial PE separator. ▸ Improved cell performance is more pronounced at higher voltage/high current density.