Ultra-High Strength Double-Side Shiny Copper Foil
Ultra-High Strength Double-Side Shiny Copper Foil, with tensile strength ≥700 MPa and elongation ≥3%, is engineered for high-energy-density batteries. It effectively accommodates silicon-based anode expansion, enhancing cycle stability and safety—making it ideal for premium consumer and high-performance power batteries.
Physical Properties Data Sheet
Items | Units | Parameters | ||||
Thickness | μm | 3.5 | 4 | 4.5 | 6 | 8 |
Area Density | g/m2 | 31±1 | 35.5±1 | 40.5 ± 1.5 | 53.5 ± 1.5 | 72 ±2 |
Copper purity | % | ≥99.8 | ||||
Tensile Strength | MPa | ≥700 | ||||
Elongation | % | ≥3 | ≥3 | ≥3 | ≥5 | ≥5 |
Roughness | μm | Ra ≤ 0.4, Rz ≤ 3 | ||||
Warpage | mm | ≤10 | ||||
Anti-Oxidation | / | 140℃/15min No Oxidation | ||||
SEM Morphology
Application Scenarios
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