Polypropylene/silica nanocomposite membranes for lithium‐ion battery separator: Studies on interfacial tuning of pore structure, mechanical and thermal properties

Energy storage and mobility industries use polypropylene (PP) nanocomposites. The energy applications of newly made microporous SiO2 filled, porous PP nanocomposites combining PP, natural rubber, nanoparticles then subsequently removing rubber from the nanocomposite were explored in this paper. SEM pictures showed how pore morphology was altered by nanofillers. Mechanical tensile tests reveal that nanofiller enhances mechanical properties polypropylene. XRD DSC experiments have shown works as a nucleating agent but has no impact on crystallinity PP. electrolyte absorption, porosity, ionic conductivity, wettability charge–discharge performance investigated for PP/SiO2 separator. matrix significant membrane, since presence nanoparticle reduces contact angle 24° to 15°. filled membrane outperformed celgard separator terms uptake (230%) porosity (62%). In comparison demonstrated better conductivity (5.9 × 10−4 S cm−1). Finally, Li/PP-SiO2/LiFePO4 coin cells (2320 type) fabricated delivered discharge capacity 138 mAh g−1.