H18 Battery Foil

The basic structure of a lithium battery includes a positive electrode, a negative electrode, an electrolyte, and a separator. Lithium batteries have four key materials: an aluminum foil, a copper foil, a separator in the middle, and the rest are electrolytes.

Battery aluminum foil refers to the aluminum foil used for the positive electrode material of lithium ion battery, or the aluminum foil for lithium battery current collector, which belongs to the finishing product in the aluminum foil product series. At present, the commonly used alloy components of h18 battery foil mainstream products are pure aluminum 1000 series, 1060, 1070, 1080 and 1235, thickness 0.010~0.020mm, temper is H18. In addition, there are many varieties of aluminum foil products used in other parts of lithium batteries, such as aluminum-plastic film for battery soft packs, tabs, and modified carbon-coated foils, electro-erosion foils and other products. Therefore, aluminum foil plays a crucial role in the development of new energy battery.

Aluminum h18 battery foil for lithium batteries has high requirements on alloy composition, flatness, thickness, dyne value, cleanliness, pinholes, and performance. At present, domestic aluminum foil products used in the field of low-end batteries are gradually becoming saturated, while aluminum foil products that meet high-end power batteries are in short supply. The application characteristics of lithium batteries and the high quality indicators of battery aluminum foil require the aluminum processing industry to take corresponding measures to produce battery aluminum foil products with excellent quality and customer satisfaction.

Advantages of aluminum h18 battery foil in the field of lithium-ion batteries are:

1, Extend the service life of lithium-ion batteries, because the special aluminum battery foil has better physical properties, which significantly improves the cycle function of lithium-ion batteries.

2, To improve the consistency of lithium-ion batteries, the use of special battery aluminum foil can not only reduce internal resistance, but also improve the consistency of internal resistance.

3, Improve the rate discharge function of the battery. After the h18 aluminum foil is selected, the rate function of the lithium-ion battery is significantly improved, especially in the case of a large rate (greater than 3C), the rate discharge capacity is more than 15%, perhaps at the same rate. In cases, battery aluminum foils can travel the energy density of lithium-ion batteries.