Conductive carbon coated Aluminum foil can replace conventional Al foil as battery cathode substrate with improved properties
* Better electrical conductivity and less internal resistivity
* Better mechanical strength and toughness to avoid short circuit caused by dendrite growth
* Improved adhesion to the electrode material
* Provides larger discharging capability and longer service life for Li-Ion batteries
Substrate of Aluminum:
9um, 12um, 15um, 18um, 20um, etc.
Carbon Coating Thickness:
1 um on each side
Width:
Can be customized
Technical Specification
| No. | Testing Items | Unit | Standard Value | Typical Value |
|---|---|---|---|---|
| 1 | Aluminum Purity | % | ≥99.8 | ≥99.95 |
| 2 | Penetration Hole | pc | No Penetration Holes | No Penetration Holes |
| 3 | Single-Side Coated Carbon Area Density | g/㎡ | Copper+0.65 | Copper+0.65 |
| 4 | Double-Side Coated Carbon Mass | g/㎡ | Copper+1.3 | Copper+1.3 |
| 5 | Mass Resistivity | Ω.g/㎡ | ≤0.17 | 0.168 |
| 6 | Thickness Tolerance | um | 1 | 1 |
| 7 | Tensile Strength | kg/㎡ | ≥ 38 | 43 |
| 8 | Room Temperature Elongation | % | ≥ 3.5 | 4.2 |
| 9 | High Temperature Elongation | % | ≥4.0 | 5.5 |
| 10 | Roughness (RA) | um | ≥0.4 | 0.7 |
| 11 | Empty Space at Each Side | mm | 15 | 15 |
| 12 | Misalignment | mm | ≤ 1 | 0.1 |
| 13 | Dyne Value | Dyne | ≥40 | 55 |
| 14 | Adhesion (3M Tape Peel Test) | OK | OK | |
Note: The standard values refer to IPC-4562, which is the general industry standard.