Copper foil refers to the extremely thin copper strip/sheet with a thickness of less than 200 μm, which is processed by electrolysis/calendering and sputtering, and is mainly used in electronic circuits and lithium batteries.
Li-ion copper foil is an important material for lithium battery anode material carrier and collector, with good ductility, electrical conductivity, chemical stability and other characteristics, at the same time, lithium copper foil raw materials are abundant, processing technology is mature, low processing cost, making lithium copper foil become the first choice of lithium battery anode material carrier and collector, the main function is to conduct and collect current to produce the maximum output current. From the point of view of the composition of lithium batteries, lithium battery copper foil accounts for 5-10% of the cost of lithium battery materials, accounting for 10-15% of the quality of lithium batteries, is an important part of lithium batteries.
The application fields of copper foil in daily life are as follows:
1, flexible packaging copper foil. Flexible packaging is the use of soft composite packaging materials made of pouch containers, the emergence of flexible packaging has greatly improved the food and beverage industry, the level of mechanization, automation, to speed up the modernization of people’s dietary life, socialization process;
2, automotive composite foil. With the booming development of China’s automobile industry and the increasing rate of aluminumization of automobiles, the market demand for automobile foil is increasing rapidly. There are two kinds of automobile foil, one is composite foil for automobile air-conditioners, and the other is composite foil for automobile radiators, which is used for manufacturing automobile water tank radiators, automobile condensers and evaporators;
3,Copper foil for electrolytic capacitors. Copper foil used for electrolytic capacitors is a kind of corrosive material working under polar conditions. Electrolytic capacitors have good performance, low price and wide application, so the market prospect is very good.
