Battery foil for lithium-ion cell is one of the important component materials of lithium batteries, which is mainly used for manufacturing battery positive electrode collector. Battery aluminum foil has the advantages of high conductivity, high strength, low cost, easy to process and so on. Lithium ion battery aluminum foil can be used 8021 aluminum foil. 8021 aluminum foil has the advantages of high barrier, good cold press forming, puncture resistance and stability, and can meet the needs of large-scale production and application of lithium batteries. Meanwhile, the manufacturing cost of 8021 aluminum foil is relatively low, which is conducive to reducing the cost of batteries and improving market competitiveness. Therefore, when manufacturing lithium batteries, 8021 aluminum foil can be used as a positive electrode collector to improve the charging and discharging performance, safety and reliability of the battery.
In lithium batteries, battery foil for lithium-ion cell as a collector, the main role is to transfer the electrons in the positive and negative electrodes of the battery to the external circuit to ensure the normal operation of the battery. At the same time, battery aluminum foil also has the function of protecting the positive and negative electrodes of the battery, preventing the positive and negative electrode materials from reacting with the electrolyte and affecting the performance of the battery. The production process of lithium ion battery aluminum foil mainly includes casting, cold rolling and foil rolling, of which casting is the basic link in the whole production process. In the casting and rolling process, the aluminum liquid flows into the casting and rolling machine through a specific gate, and becomes battery aluminum foil after a series of rolling. In the production process of lithium ion battery aluminum foil, it is necessary to control the thickness, weight, surface quality, performance and other parameters of battery aluminum foil to ensure that the quality and performance of aluminum foil meet the requirements. At the same time, it is also necessary to pay attention to the processing performance and safety performance of aluminum battery foil and other aspects.
In conclusion, aluminum battery foil for lithium-ion cell is an important battery material, and its quality and performance have an important impact on the performance and service life of lithium ion batteries. In the future, with the continuous development of new energy vehicles and energy storage market, the demand for lithium ion battery aluminum foil will continue to increase, and the market prospect is broad.