Description
High-Performance Copper Foil Rolls for Lithium-Ion Battery, Size: 25 µm
Our 25 µm High-Performance Copper Foil Rolls are engineered to meet the rigorous demands of lithium-ion battery manufacturing. With exceptional electrical conductivity, thermal stability, and oxidation resistance, this foil serves as an ideal current collector for cathode and anode designs. It is widely used in electric vehicles, energy storage systems, consumer electronics, and battery R&D. The optimized mechanical properties ensure compatibility with high-speed coating processes and long-term cell performance.
Technical Properties:
| Property | Specification |
|---|---|
| Thickness | 25 µm |
| Width | 200 mm |
| Length | 131 meters |
| Areal Density | 190–200 g/m² |
| Purity | ≥99.9% Cu |
| Fe Impurity | < 0.0010% |
| Bi Impurity | < 0.00020% |
| Pb Impurity | < 0.0005% |
| Tensile Strength (Room Temp) | ≥294 MPa |
| Elongation (Normal Temp) | 2.5% |
| Tensile Strength @ 180 °C | ≥147 MPa |
| Elongation @ 180 °C | 2% |
| Oxidation Resistance @ 180 °C (1h) | No surface oxidation or discoloration |
| Surface Roughness (Drum Side) | < 0.3 µm |
| Surface Roughness (Matte Side) | < 3.0 µm |
| Surface Tension (Drum Side) | 62 dyne/cm |
| Surface Tension (Matte Side) | 62 dyne/cm |
| Coating Uniformity | Excellent on both sides |
Applications:
-
Lithium-ion battery current collectors
-
Battery research and development
-
Electric vehicle (EV) battery manufacturing
-
Energy storage system (ESS) modules
-
Consumer electronics and mobile devices
-
Slurry coating and high-speed roll-to-roll processing