Microporous Copper Aluminum Foil for Solid State Batteries - 8-12μm Thickness, 10-40% Porosity
Price:
50-100000USD/Negotiable
MOQ:
100pcs
Delivery Time:
5-8 working days
Brand:
XWELL
Product Description
Product Overview
Our precision-engineered micro-perforated copper and aluminum foils are designed for next-generation solid-state and lithium-ion batteries. With customizable porosity up to 40% and zero burrs, these foils enhance electrolyte infiltration and electrode kinetics while maintaining structural integrity.
Key Applications
- Solid-state batteries
- High-energy-density lithium batteries
- Power batteries for electric vehicles and energy storage systems
Customizable Specifications
| Parameter | Options |
|---|---|
| Thickness | 8μm / 10μm / 12μm / >12μm |
| Width | 187mm / 260mm / 350mm (OEM available) |
| Aperture | 0.25mm / 0.35mm / 0.40mm (OEM available) |
| Spacing | 0.6mm / 0.8mm (molded) / 1mm |
| Porosity | 10%-40% (e.g., 17%: 0.35mm+0.8mm) |
Note: Non-standard sizes require mold development.
Performance Advantages
Enhanced Electrode Compaction
| Parameter | Conventional Foil | 17% Microporous Foil |
|---|---|---|
| Ternary Cathode (15μm Al) | ||
| Thickness (μm) | 99.6 | 97.06 (-2.55μm) |
| Compaction Density (g/cm³) | 3.31 | 3.41 (+3%) |
| Graphite Anode (10μm Cu) | ||
| Thickness (μm) | 103.75 | 102.16 (-1.7μm) |
| Compaction Density (g/cm³) | 1.60 | 1.72 (+7.5%) |
Theoretical thickness reduction due to porosity.
Superior Rate Performance
| Metric | Conventional Foil | 17% Microporous Foil |
|---|---|---|
| 1C Capacity (mAh/g) | 146.0 | 149.2 (+2.2%) |
| 5C/1C Retention | 39.20% | 47.53% (+21.2%) |
Lower Internal Resistance
| Material | Internal Resistance (mΩ) |
|---|---|
| Conventional Foil | 46.0 |
| 17% Microporous | 39.8 (-13.5%) |
Key Benefits
- Porosity Optimization: Balanced open-area ratio for ionic/electronic conductivity
- Process Compatibility: Works with standard rolling pressure (4MPa tested)
- Performance Gains: Higher energy density, faster charging, and longer cycle life
- Quality Assurance: Zero burrs, ISO-certified production
Order Information
- MOQ: 1 roll (custom widths available)
- Lead Time: 2-4 weeks (standard), 6-8 weeks (OEM molds)
- Packaging: Vacuum-sealed to prevent oxidation
Contact us for technical datasheets or sample requests!
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
GUANGDONG XWELL TECHNOLOGY CO., LTD.
Location
Room 316, Building 3, No. 801, Qiaoxing Avenue, Xiaoluo Village, Shatou Street, Panyu District, Guangzhou
Contact Person
Sammy Qin