Carbon Coated Copper Foil
PRODUCT PARAMETERS
Description
Carbon Coated Copper Foil – Conductive Anode Substrate for Li-Ion Batteries
Conductive carbon coated copper foil is an advanced anode substrate material designed to replace conventional bare copper foil in lithium-ion batteries. The carbon coating on both sides significantly enhances electrochemical performance and addresses key challenges in battery operation.
Key Advantages Over Conventional Copper Foil:
- Better Electrical Conductivity & Lower Internal Resistivity: Reduces energy loss and improves rate capability.
- Improved Mechanical Strength & Toughness: Helps avoid short circuits caused by dendrite growth during cycling.
- Enhanced Coating Strength: Provides superior adhesion between electrode materials and the current collector.
- Increased Discharge Capability & Longer Service Life: Contributes to higher capacity retention and extended cycle life.
Applications:
- Lithium-ion battery anodes (graphite, silicon, etc.)
- Advanced energy storage research
- High-rate and long-life battery development
- Dendrite mitigation studies
Technical Specifications – Carbon Coated Copper Foil
| No. | Item | Standard | Tested Value |
|---|---|---|---|
| 1 | Cu Purity | ≥99.8% | ≥99.95% |
| 2 | Penetration Holes | None | None |
| 3 | Single-Sided Carbon Coating Quality | Copper areal density +0.65 g/m² | Copper areal density +0.65 g/m² |
| 4 | Double-Sided Carbon Coating Quality | Copper areal density +1.3 g/m² | Copper areal density +1.3 g/m² |
| 5 | Mass Resistivity | ≤0.17 Ω·g/m² | 0.168 Ω·g/m² |
| 6 | Thickness Tolerance | ±1 μm | ±1 μm |
| 7 | Tensile Strength | ≥30 kg/m² | 35 kg/m² |
| 8 | Room Temperature Elongation | ≥3.5% | 4.2% |
| 9 | High Temperature Elongation | ≥4.0% | 5.5% |
| 10 | Roughness (RA) | ≥0.4 μm | 0.7 μm |
| 11 | Blank on Both Sides | 15 mm | 15 mm |
| 12 | Wrong Position | ≤1 mm | 0.1 mm |
| 13 | Dyne Level | ≥40 dyne | 55 dyne |
| 14 | Adhesion (3M Tape Tearing Test) | OK | OK |
*Note: Specification values refer to IPC-4562 industry standard.*
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