Battery Separator Discs for Coin Cell Research | PP/PE, 16-20μm

Pre-cut separator discs for coin cell assembly, cut to size and ready to use in CR20xx and other coin cell research configurations.Designed for lithium-ion and sodium-ion battery research: the disc separates the cathode and anode to prevent short-circuiting while allowing ion migration through its porous structure. Available options (100 pcs per box): - Φ19 mm × 20 μm PE - Φ19 mm × 16 μm PP - Φ16.2 mm × 16 μm PP Key parameters (Φ19 mm × 16 μm PP): porosity 35±4%, air permeability 310±50 s/100ml, puncture strength ≥220 g, tensile strength MD ≥1200 kg/cm² (TD ≥100 kg/cm²), shrinkage at 120°C/1h ≤0.5% (TD) / ≤8.0% (MD). Usage: place one separator disc between the anode and cathode inside the coin cell, add electrolyte, then seal with the cell crimper. Dry film, ships as empty consumable — no electrolyte, no lithium, not classified as dangerous goods.