What is copper foil? Main application areas
Copper foil refers to an extremely thin copper strip/sheet with a thickness of less than 200μm formed by electrolysis/rolling and sputtering. It is mainly used in the fields of electronic circuits and lithium batteries.
Lithium battery copper foil is an important material that forms the carrier and current collector of lithium battery anode materials. It has good ductility, conductivity, stable chemical properties and other properties. At the same time, lithium battery copper foil has abundant raw materials, mature processing technology and low processing cost, making lithium battery Copper foil has become the first choice for lithium battery anode material carrier and current collector. Its main function is to conduct and collect current to generate maximum output current. From the perspective of the composition of lithium batteries, lithium battery copper foil accounts for 5-10% of the material cost of lithium batteries and 10-15% of the quality of lithium batteries. It is an important component of lithium batteries.
The application areas of copper foil in daily life are as follows:
1. Soft packaging copper foil. Flexible packaging is a bag container made of soft composite packaging materials. The emergence of flexible packaging has greatly improved the mechanization and automation level of the food and beverage industry, and accelerated the modernization and socialization process of people's dietary life;
2. Composite foil for automobiles. With the vigorous development of my country's automobile industry and the continuous improvement of automobile aluminumization rate, the market demand for automobile foils has increased rapidly. There are two types of automobile foils, one is composite foil for automobile air conditioners, and the other is for automobile radiators. Composite foils used in the manufacture of automotive radiators, automotive condensers and evaporators;
3. Copper foil for electrolytic capacitors. The copper foil used in electrolytic capacitors is a corrosive material that works under polar conditions. Electrolytic capacitors have good performance, low price, and wide range of uses, so they have good market prospects.
