Lithium-ion battery aluminum foil refers to aluminum and aluminum alloy foil suitable for lithium-ion battery cathode current collectors. Together with lithium iron phosphate, lithium cobalt oxide, lithium manganate and other cathode materials, it forms part of the lithium-ion battery cathode. Among them, pure aluminum
Refers to metals with a mass fraction of aluminum not less than 99.00%. Aluminum alloys refer to alloys with aluminum as the matrix and whose mass fraction is less than 99.00%. Lithium-ion battery aluminum foil is a kind of rectangular cross-section, uniform thickness and within 0.008-
Rolled products with a width between 0.020mm and no more than 1,600.0mm and delivered in coils. Aluminum foil is used for battery electrodes as the cathode current collector of lithium-ion batteries. It is a high-end aluminum foil and has high production process and environmental requirements.
Strictly driving the added value of products to continuously increase, the profit point has obvious advantages compared with conventional aluminum foil products, and the market space is very broad.
Type name Type description
Light foil Light foil is aluminum processed through a series of processes such as smelting, casting, homogenization annealing, rolling, and cutting of aluminum or aluminum alloy materials.
foil, and has not been processed by surface corrosion treatment or re-oxidation treatment. In order to ensure the stable performance of aluminum foil, traditional aluminum foil is made from ingot blank or cast
The production of rolled strips is controlled. The raw materials of ingots or cast-rolled strips used for aluminum foil production must comply with the provisions of specific material standards. The main production equipment
It also needs to be checked regularly. The aluminum foil production process is divided into the research stage, the formal verification stage of process stability, and the mass production and supply stage.
The process in the above three stages must be completely consistent.
Coated foil Coated foil refers to aluminum foil with a coating layer on the surface. That is, functional coating is used to surface treat the battery positive electrode current collector, and a layer is coated on the surface of the aluminum foil.
Uniform nano conductive graphite and other conductive materials, the coating process includes spraying, printing, etc. The surface of the aluminum foil obtained by this method is uniform and controllable.
good. Coating the surface of aluminum foil can improve the liquid absorption capacity of the positive electrode, improve the adhesion between the active material and the current collector, and improve the recovery of the positive electrode.
The ability to collect microcurrent from active materials, reduce the contact resistance between the cathode material and the current collector, and reduce polarization, thereby improving battery consistency.
performance and improve battery rate performance.
Composite aluminum foil Composite aluminum foil is a kind of organic film such as polyethylene terephthalate (PET) as the base, and is deposited on both sides using an advanced vacuum evaporation process.
A new type of battery material made from a metallic aluminum layer. The final thickness of the metallic aluminum layer is about 1 μm to meet the performance requirements of the cathode current collector.
beg. At present, mass-produced composite aluminum foil products have been introduced to the market. According to testing by battery manufacturers, the new material can completely replace traditional aluminum foil as a
Current collector for the positive electrode of lithium-ion batteries.
