Packaging: 8um thick*280/180mm wide 50 m/roll.
Material name: PET double-sided composite aluminum foil.
Application: lithium-ion battery, sodium-ion battery, etc.
PET substrate and composite aluminum foil can effectively improve the safety performance and energy density of batteries.
Main Parameters:
| Test item | Unit | Standard value | Standard testing method | |
| Surface density | g/cm2 | 13±0.5 | Original sampler, balance | |
| Product thickness | um | 8.0(+1/-0) | Thickness gauge | |
| Product width | mm | 280 | Steel ruler | |
| Square resistance | mΩ/□ | 40±3 | Four-probe square resistance meter | |
| Resistivity | Ω/m | ≤4*10^-8 | Four-probe square resistance meter | |
| Coating purity | % | 99.35 | Metal detector | |
| Tensile strength | MD | MPa | ≥240 | Tensile testing machine |
| TD | ≥180 | |||
| Elongation at break | MD | % | ≥3% | |
| TD | ≥3% | |||
| Wettability | Dyne value | ≥32 | Dyne pen | |
| Antioxidant | 150℃ 10min |
/ | / | Oven |
| 150℃ 10min |
No melting | |||
| Adhesion | / | No peeling of No. 681 tape | 3M tape | |
| Pinhole | piece | No pinholes > 500um | Metallurgical microscope | |
| Appearance and storage conditions | The surface of the foil is smooth and flat; there is no interlayer wrinkle; there is no indentation, bump, scratch, uniform color, no corrosion, no oil stain, no black spots, smooth cutting edge, no obvious burrs. Storage temperature ≤25℃, humidity ≤65%, avoid direct sunlight and chemical corrosion. | |||
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