What is lithium battery aluminum foil? What does it do?
Jul 18,2024.
What is lithium battery aluminum foil?
Battery aluminum foilis used as a collector for lithium-ion batteries. Typically, the lithium-ion battery industry uses rolled aluminum foil as a positive collector.
The advantages of aluminum foil application in lithium-ion batteries are reflected in the following aspects:
1、extend the service life of lithium-ion batteries, because the special aluminum foil has better physical functions, so that the cycle function of lithium-ion batteries has been significantly improved.
2、improve the consistency of lithium-ion batteries, the use of special aluminum foil can not only reduce the internal resistance, and the consistency of the internal resistance has also been improved.
3、improve the rate discharge function of the battery, after the selection of special aluminum foil, the rate function of the lithium-ion battery is significantly advanced, especially in the case of large rate (greater than 3C), the rate discharge capacity is more than 15%, perhaps in the case of equal rate, the special aluminum foil can travel the energy density of lithium-ion batteries.
Aluminum foil is widely used in civil and industrial middle, such as our daily heating lunch box, tin foil for female comrades perm, and tobacco packaging, etc., write is tin foil, in fact, are aluminum foil products. In addition to aluminum foil used on lithium batteries, aluminum foil is also used for supercapacitors.
Aluminum foil for lithium batteries has three main materials: positive electrode sheet, pole ear and coating material. But this market is also high-end products are foreign monopoly.
What is the role of aluminum foil?
Currently, battery-grade aluminum foil is used as a positive collector for lithium batteries. Ningde Times recent expansion action frequently, comprehensive a number of brokerage research reports, its 2025 planned production capacity is 500-600GWh, data show that 1GWh lithium battery aluminum foil in 600-800 tons, according to this standard, only Ningde times a lithium battery supplier, will consume 300,000-480,000 tons of aluminum foil.
Polyaluminum chloride can be prepared from waste aluminum foil. Polyaluminum chloride is a commonly used inorganic polymer flocculant. The wide range of raw material sources for the production of polyaluminum chloride has set the foundation for its development. In particular, the variety of production processes provides convenience for the development of polyaluminum chloride. It has certain practical significance in improving resource utilization and protecting environment.
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