Standard packaging: 2.5kg/roll thickness 4.5um * W 180mm. (Other widths of copper foil can be customized).
Roll length 100m/kg;
Electrolytic copper foil for lithium batteries is used as negative electrode carrier and current collector of lithium-ion batteries. The purity is 99.98% and the rest is passivation layer.
Overview: Electrolytic copper foil for lithium battery, used as negative electrode carrier and current collector of lithium-ion battery, with purity of 99.98% and the rest is passivation layer.
Main Parameters:
| Test items | Unit | Standard value | Typical Value |
| Purity | % | >99.8 | >99.98 |
| Permeability | piece | No penetration holes | No penetration holes |
| Area mass | g/m2 | 36-42 | 39 |
| Mass resistivity | Ω.g/m2 | <0.17 | 0.168 |
| Thickness tolerance | um | 0-2 | 0-1 |
| Tensile strength | Kg/m2 | >26 | 36 |
| Elongation at room temperature | % | >3.5 | 4.2 |
| Elongation at high temperature | % | >4.0 | 5.5 |
| Surface roughness (RA) | um | <0.4 | 0.39-0.4 |
| Surface roughness (RZ) | um | <3.0 | 1.6 |
| Roughness (RA) | um | 0.35-0.75 | 0.4 |
| Roughness (RZ) | um | <3.0 | 1.6 |
| Antioxidation rate (130℃ 10min) | OK | OK | |
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