Composite Aluminum foil (APF)
The safety of battery is related to the life safety of every consumer, and the current collector plays an extremely important role in the thermal runaway of battery. Composite aluminum foil is a composite material with a special sandwich structure prepared by vapor deposition process. Compared with the traditional aluminum foil, it has very obvious safety advantages, significantly improves the safety under mechanical abuse, fundamentally solves the safety anxiety of the battery, and protects the assured use of lithium-ion batteries.
Composite Aluminum Foil Product Performance
| Item | Standard Value | Standard | |
Thickness（μm） | 8±0.5 | ISO 4591:1992 | |
Square Resistance（mΩ） | 40±2 | GB/T 15717:2021 | |
Areal density（g/m²） | 13±1 | ISO 4591:1992 | |
Adhesion（N/15mm） | ≥6 | / | |
Surface tension（mN/m） | ≥60 | GB/T 22638.4-2008 | |
| Tensile strength（MPa） | MD | ≥240 | GB/T 1040.1-2006 |
| TD | ≥180 | ||
| Break Elongation（%） | TD | ≥40 | GB/T 1040.1-2006 |
| TD | ≥15 | ||
Pin hole | ≥0.5mm | 0 | / |
| Bump | No visible bumps on visual inspection | / | |
| Level | Single roll length ≥8000m, no joint. | / | |
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Data analysis of composite aluminum foil ( APF)
Evaporation: 1μm/1μm (double-sided) Area density deviation: within± 3% Measuring point: 10*10=100.
| Evaporation: 1μm/1μm (double-sided) Aquare resistance deviation: within± 3% Measuring point: 10*10=100.
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