Boehmite (AlOOH) Separator Coating Powder
CAS Number: 1318-23-6
Boehmite (AlOOH) is a preferred ceramic material for aqueous-slurry separator coating processes, offering lower density than alpha-alumina, better dispersibility in water-based systems, and excellent adhesion on both PE and PP separator substrates. Upon heating it converts to gamma-alumina, providing thermal robustness required for battery safety.
Technical Specifications
| D50 (μm) | 0.5–1.5 |
| appearance | White powder |
| purity (%) | ≥99.0 |
| moisture (%) | ≤1.0 |
| pH (5% suspension) | 8.0–10.0 |
| BET surface area (m²/g) | 80–200 |
Applications
- Aqueous boehmite ceramic separator coating
- Water-based separator coating slurry for PE substrate
- PP microporous separator thermal coating
- Safety layer for EV large-format cell separators
- Combined Al2O3/boehmite hybrid separator coating
Key Features
- High BET (80–200 m²/g) provides excellent aqueous slurry stability without dispersants
- Fibrous/platelet morphology creates interlocking ceramic layer with superior adhesion to separators
- Lower coating weight achievable versus alpha-Al2O3 for thinner coated separators
- Converts to gamma-Al2O3 at 400–600°C providing thermal stability in abuse conditions
Send Inquiry
More in Battery / Energy Storage Chemicals
1,3-Propane Sultone (1,3-PS) SEI Additive
1120-71-4
Acetylene Black Battery Grade (Shawinigan-Type)
1333-86-4
Adiponitrile (ADN) High-Voltage Electrolyte Additive
111-69-3
Alumina (Al2O3) Ceramic Separator Coating Powder
1344-28-1
Carboxymethyl Cellulose (CMC) Anode Binder/Thickener
9004-32-4
Cobalt Sulfate Heptahydrate Battery Grade (CoSO4·7H2O)
10124-43-3
Conductive Carbon Black Super C45 Battery Grade
1333-86-4
Conductive Carbon Black Super C65 Battery Grade
1333-86-4