Battery Separator Market by Type of Battery (Lithium-Ion (Li-Ion), Lead Acid, Nickel-Cadmium, Nickel Metal, and Others), Type of Separator (Coated Separator and Non-Coated Separator), Type of Material (Ceramic, Nylon, Polyethylene (PE), Polypropylene (PP), and Others) Type of Thickness (5µM-10µM and 10µM-20µM), Type of Technology (Dry Battery Separator and Wet Battery Separator), Application Area, End Use Industry, Geographical Regions, and Leading Players – Trends and Forecasts 2026-2040