Global Polyethylene (PE) Battery Separator Market reached US$ 3.5 billion in 2023 and is expected to reach US$ 8.5 billion by 2031, growing with a CAGR of 11.8% during the forecast period 2024-2031. The growing consumer shift toward electric mobility is one of the drivers for polypropylene battery separators. As electric vehicles gain popularity, the demand for lithium-ion batteries, which often use polypropylene separators, increases. To fulfill the growing demand for battery separators, some manufacturers have expanded their production facilities.