The conductive coating is also called pre-coating. In the lithium battery industry, it is usually referred to as a conductive coating on the surface of the positive current collector-aluminum foil. The aluminum foil coated with the conductive coating is called pre-coated aluminum foil or simply coated. Layer aluminum foil, its earliest experiment in the battery can be traced back to the 70s, and in recent years, with the development of new energy industry, especially lithium iron phosphate battery, it has become a hot new technology or new material in the industry.
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Lithium battery conductive coating properties
The conductive coating can effectively improve the adhesion of the pole piece in the lithium battery, reduce the amount of the binder used, and at the same time significantly improve the electrical properties of the battery. Foreign large-scale company products will not be introduced. Introduce the only product in China that is promoted in the market and has independent intellectual property rights – WX112, developed and produced by Zhongxing's Shanghai Zhongxing Paineng Energy Technology Co., Ltd. As for the samples, the technical requirements such as full coating, leaving edges, and leaving gaps can be realized. The performance is as follows:
1. Contact resistance drops by 40%
2. Reduce the amount of adhesive by 50%
3. Under the same rate, the battery voltage platform is increased by 20%.
4. The adhesion between material and current collector is increased by 30%, and there will be no delamination after long-term circulation.
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