Microporous Copper Aluminum Foil Solid State Battery Lithium Battery

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Model:CC
 ​​​Thickness​​:8μm / 10μm / 12μm / >12μm
 ​​Width​​:187mm / 260mm / 350mm (OEM*)
 ​​​​Aperture​​​:0.25mm / 0.35mm / 0.40mm (OEM*)
 ​​Spacing​:0.6mm / 0.8mm (molded) / 1mm
 ​​​​Porosity​​: 10%-40% (e.g., 17%: 0.35mm+0.8mm)
 Thickness​: ​​99.6μm
 Compaction Density​: 3.31g/cm³
 MOQ: 100pcs
 Leading time: 5-8 working days

Category:

Microporous Copper Foil Aluminum Foil Solid-state Battery Lithium Battery For New Energy Power Battery-grade Current Collector Porous Punching

1. Product Overview​​

Our precision-engineered ​​micro-perforated copper/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 EVs/ESS

2. Customizable Specifications​​

Parameter Options
​​Thickness​​ 8μm / 10μm / 12μm / >12μm
​​Width​​ 187mm / 260mm / 350mm (OEM*)
​​Aperture​​ 0.25mm / 0.35mm / 0.40mm (OEM*)
​​Spacing​​ 0.6mm / 0.8mm (molded) / 1mm
​​Porosity​​ 10%-40% (e.g., 17%: 0.35mm+0.8mm)

Note: Non-standard sizes require mold development.

3. Performance Advantages​​

​​A. 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.

​​B. 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%)

​​C. Lower Internal Resistance​​

Material Internal Resistance (mΩ)
Conventional Foil 46.0
17% Microporous ​​39.8​​ (-13.5%)

​4. Why Choose Our Foils?​​

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.

5. 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!