The 12+2+2µm Safety Primer Coating Foil is widely adopted in power batteries, energy storage power batteries, and consumer batteries. It is also compatible with sodium-ion batteries and high-voltage lithium battery systems.
1. Technical Parameters
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Applicable Battery
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Lithium-ion battery / Sodium-ion battery
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Alloy
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AA1100, AA1060, AA1235D
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Temper
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H18
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Aluminum Foil Thickness
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12µm
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Coating Thickness
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2µm (single side/double sides)
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Aluminum Foil Width
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300-1550mm
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Coating System
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Aqueous slurry
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Surface Tension
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≥64 dyn/cm
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Tensile Strenght
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≥230 MPa
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Enlongation
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≥3.0 %
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Coating Surface Density
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4.0±1 g/㎡
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Total Surface Density
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36.4±2.4 g/㎡
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NMP Resistance
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Baked at 130 °C for 10 min. Wiping 200 times with NMP, the coating remains intact without peeling.
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Edge Trimming Defect
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<100μm
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Appearance
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No dents or depressions, scratches, pinholes, pockmarks, edge notches, tower
shapes, arrows, end face burrs, impact injury; foil material bonding tape.
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2. Product Image
3. Key Benefits of 12+2+2µm Safety Primer Coating Foil
- Lowers surface resistance, improving high-rate discharge performance.
- Solid electrolyte layer enhances ion transport while reducing side reactions between electrolyte and cathode materials and provides protection against dendrite penetration and external puncture.
- Carbon layer improves flexibility and tear resistance, preventing crack propagation in metal foil.
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