Aluminium Foil For Battery Suppliers
In recent years, the uses of lithium batteries has greatly expanded, and the demand for China aluminum foil for battery has rapidly increased. Battery foil is becoming an independent aluminum foil variety.
At the same time, with the higher requirements on the lithium batteries, the safety requirements for aluminum foil is also very high. Nowadays, aluminum foil for battery should meet the following requirements:
1. High cleanliness. No debris, dust, especially iron filings should be mixed into the aluminum coil, which will seriously affect the safety of the battery during the charging and discharging process.
2. Strict requirements for the aluminum foil shape. The uniformity of the anode material coated on the surface of the aluminum foil will greatly affect the service life and endurance of the lithium battery, but the coating process is almost free of tension, which puts forward strict requirements for the shape, usually below 10I.
3. High mechanical properties. High tensile strength and high elongation are required under the condition that the aluminum purity remains unchanged. As we all know, the higher the aluminum purity, the lower the tensile performance and the higher the elongation. This is a challenge for the aluminum foil producers.
4. Aluminum foil thickness and pinholes. Thinner aluminum foil has become an important way to increase the capacity of lithium batteries. However, the decrease in the thickness of the aluminum foil will inevitably lead to an increase in the number of pinholes. The increase in pinholes will cause the foil breakage during the calendering process of the lithium battery, which will seriously affect its quality, so it puts forward higher requirements on the aluminum foil.
5. High surface requirements. The surface of the aluminum foil must not have various surface defects such as dark spots, black oil lines, pits, etc., which are directly related to the uniform coating and compaction process of lithium batteries.
6. High dyne value. In order to ensure the coating quality, the dyne on the surface of the battery grade aluminum foil should be above 32 dyne, even 34 or 36 dyne.
As an aluminium foil for battery supplier, Haomei Aluminum can provide the common alloys of aluminum foil battery for the global customers. Welcome to leave message below to get the best price.
Original source: https://www.hm-alu.com/a/aluminium-foil-for-battery-suppliers.html
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