Polypropylene (PP) Lithium-Ion Battery Separator Roll – Dry Process, 16 µm or 25 µm (1000 m × 65 mm) for 21700 Cylindrical Cells
High-quality microporous polypropylene (PP) lithium-ion battery separator roll manufactured using the dry process, specifically designed for 21700 cylindrical Li-ion cell assembly and laboratory-scale battery research.
This separator provides controlled porosity (42 ± 3%), stable air permeability (Gurley value 350 ± 100 s/100 ml), and strong mechanical strength. Available in 16 µm or 25 µm thickness, it is suitable for electrode winding processes and cylindrical cell prototyping.
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