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8021 aluminum foil is an important kind of battery grades aluminum foils. Its thickness is 0.018mm-0.2mm, and the width can be controlled to 100-1650mm according to customer requirements.8021 aluminum foil has good deep drawing performance, good electrolyte corrosion resistance and good heat seal strength, which is the preferred aluminum material for soft pack battery.The battery soft pack foil is used in various types of lithium batteries such as soft pack lithium batteries and polymer lithium batteries. The battery soft pack foil is a layer of polymer shell on the liquid lithium ion battery.The soft pack battery has two layers. The outside layer is made of 8021 aluminum foil, plastic film, special glue, which forms a aluminum-plastic film. The inside layer is 1235/1060/1070 aluminum coated with lithium iron phosphate and The lithium manganate ternary material.In the case of potential safety hazards, the soft-pack battery will only deflate at most, and will not explode like the battery with metal shell.Since soft pack batter is lighter, safer and of longer service life, it is widely used for electric bicycles, electric vehicles, electric tools, electric toys, emergency lighting, portable power supplies and mine safety equipment.Haomei 8021 aluminum foil has good elongation, which is commonly used in deep-drawing packaging material. If you need 8021 foil for soft pack battery, welcome to contact us directly.