LATP Solid Electrolyte Coating Isolation Film GMSS02 Double-sided Single Coating B/L2+2+7+1+2 Lithium Liquid Battery
Product Overview
The GMSS02 separator by Canrd Xwell is a multi-layer composite membrane designed for high-performance semi-solid lithium batteries. Combining a 7μm PE base with dual functional coatings (2μm boehmite + 2μm LATP) and PVDF adhesive layers, this white, smooth film enables superior thermal stability and electrode adhesion while maintaining ionic conductivity.
Structural Composition
| Layer |
Material |
Thickness |
Function |
| Base Membrane |
Polyethylene (PE) |
7μm |
Mechanical support |
| Coating Side A |
Boehmite (AlOOH) |
2μm |
Thermal resistance |
| Coating Side B |
LATP Solid Electrolyte |
2μm |
Ionic conduction |
| Surface Treatment |
PVDF Adhesive |
2μm/side |
Electrode bonding |
Key Performance Parameters
| Parameter |
Value |
Test Method |
| Total Thickness |
12.8 μm |
Micrometer |
| Air Permeability |
226 sec/100ml |
ISO 5636-5 |
| Puncture Strength |
446 gf (Φ1.0mm) |
ASTM D4833 |
| Thermal Shrinkage (130°C) |
MD:1.2%, TD:0.4% |
Thermal aging test |
| Tensile Strength |
MD:3099, TD:3053 Kgf/cm² |
ASTM D882 |
| Peel Strength |
CCS:49 N/m, LATP:44 N/m |
90° peel test |
Material Advantages
-
Thermal Safety
- Boehmite coating provides 25% larger coverage than Al₂O₃ at equal mass
- Withstands 130°C with minimal shrinkage (<1.5%)
-
Electrochemical Performance
- LATP coating enhances Li⁺ transport (44 N/m bonding strength)
- PVDF layers enable >49 N/m electrode adhesion without blocking pores
-
Mechanical Reliability
- High puncture resistance (446gf) prevents dendrite penetration
- Balanced MD/TD elongation (112%) for winding compatibility
Applications & Limitations
✓ Ideal for:
- Semi-solid lithium batteries
- Coin cells & pouch cells
- High-temperature systems (≤130°C)
✖ Not suitable for:
- Pure solid-state batteries
- Sodium-ion batteries
Handling Protocol
- Storage: Keep sealed in dry environment (RH<30%)
- Processing: Use in dry rooms; avoid >60°C exposure before cell assembly
- Lifetime: 6 months in original vacuum packaging
