LabCore Materials
Battery Separator Discs φ18mm — 2320 / 2325 / 2500 | PP/PE/PP Trilayer & PP Monolayer | Na-ion K-ion Li-ion Li-S Cell Separator
φ18 mm pre-punched separator discs covering three mainstream membranes in one listing: 2320 (PP/PE/PP trilayer, 20 µm — thin, energy-dense), 2325 (PP/PE/PP trilayer, 25 µm — balanced workhorse), and 2500 (PP monolayer, 25 µm, 55% porosity — high-rate). Ready to load into CR2032 coin cells and 18 mm test hardware for Na-ion, K-ion, Li-ion and Li-S R&D.
LabCore φ18 mm discs are punched from industrial-grade polyolefin microporous membranes. Three mainstream grades ship from one listing, \*\*ready to load with no cutting tools and no burred edges\*\*. φ18 mm is a widely used separator diameter for coin-cell assembly and 18 mm test hardware.
Which Grade Should You Pick?
| Grade | Structure | Thickness | Porosity | Gurley | Best for |
| \*\*2320\*\* | PP/PE/PP trilayer | 20 µm | 39% | 530 s | Thinner, energy-density-first |
| \*\*2325\*\* | PP/PE/PP trilayer | 25 µm | 39% | 620 s | \*\*Balanced workhorse\*\* — safety + energy |
| \*\*2500\*\* | \*\*PP monolayer\*\* | 25 µm | \*\*55%\*\* | \*\*200 s\*\* | \*\*High-rate / fast-charge\*\*, low impedance |
- \*\*Need thermal shutdown protection\*\* → choose \*\*2320 / 2325\*\* (PE inner layer closes pores at high temperature)
- \*\*Running rate-capability / high-power experiments\*\* → choose \*\*2500\*\* (monolayer PP, 55% porosity, only 200 s Gurley — lowest ion-transport resistance)
- \*\*Not sure?\*\* → buy one 500 pc box of each and run a side-by-side comparison
> ⚠️ \*\*2500 is a monolayer PP membrane with no PE shutdown layer — it has no thermal shutdown function.\*\* Choose 2320 / 2325 if your experiment needs high-temperature self-protection.
Order / Quote
| Model | Pack | Price | Action |
|---|---|---|---|
| SEP-2320-D18In stock | 2320 Battery Separator Discs, φ18 mm × 1000 pcs | P.O.R. | |
| SEP-2320-D18-1KIn stock | 2320 Battery Separator Discs, φ18 mm × 1000 pcs | P.O.R. | |
| SEP-2320-D18-5KIn stock | 2320 Battery Separator Discs, φ18 mm × 5000 pcs | P.O.R. | |
| SEP-2325-D18-1KIn stock | 2325 Battery Separator Discs, φ18 mm × 1000 pcs | P.O.R. | |
| SEP-2325-D18-500In stock | 2325 Battery Separator Discs, φ18 mm × 500 pcs | P.O.R. | |
| SEP-2325-D18-5KIn stock | 2325 Battery Separator Discs, φ18 mm × 5000 pcs | P.O.R. | |
| SEP-2500-D18In stock | 2500 Battery Separator Discs, φ18 mm × 500 pcs | P.O.R. | |
| SEP-2500-D18-1KIn stock | 2500 Battery Separator Discs, φ18 mm × 1000 pcs | P.O.R. | |
| SEP-2500-D18-5KIn stock | 2500 Battery Separator Discs, φ18 mm × 5000 pcs | P.O.R. |
- **Fast CR2032 coin cell assembly** — Li-ion, Na-ion, K-ion and Li-S chemistries
- **φ18 mm test fixtures and Swagelok-type cells** — ready out of the pack
- **Rate-capability and fast-charge comparison studies** — 2500 (high flux) vs 2325 (balanced)
- **Lithium-sulfur (Li-S) cell R&D** — liquid / gel electrolyte configurations
- **Sodium-ion (Na-ion) and potassium-ion (K-ion) battery research**
- **Batch assembly and teaching labs** — no cutting, minimal lot-to-lot and operator variation