Is it important for lithium battery ceramic coated separators?

The important purpose of the separator is to separate the positive and negative electrodes of the lithium battery, to prevent short-circuiting of the two poles in contact, and also has the function of allowing electrolyte ions to pass through. The performance of the diaphragm determines the battery's interface structure, internal resistance, etc., and directly affects the battery's capacity, cycle, and safety performance. The performance of the diaphragm determines the internal resistance and interface structure of the lithium battery, which in turn determines the battery capacity, safety performance, charge and discharge density and cycle performance. Ceramic-coated special diaphragm: PP, PE or multilayer composite diaphragm is used as the substrate, and the surface is coated with a layer of nano-aluminum oxide material, which is solved by a special process and adheres closely to the substrate. Significantly improve the high temperature resistance and safety of lithium batteries. The ceramic-coated special diaphragm is particularly suitable for power lithium-ion batteries. At present, dealing with the safety performance of lithium batteries has become an important development direction for separators. Lithium battery separators are battery supporting materials encouraged by the country. The 2008 National 863 Plan listed the key technology research of low-cost lithium battery separators as a key industrialization-oriented project. From the perspective of the safety of lithium batteries, more and more battery cell companies in my country have begun to focus on the category of ceramic-coated diaphragms. However, the use of ceramic-coated diaphragms in my country's lithium battery market is not large, and there are not many companies that can make diaphragms with good consistency and stability. From the perspective of the safety of lithium batteries, more and more battery cell companies in my country have begun to focus on the category of ceramic-coated diaphragms. However, the use of ceramic-coated diaphragms in my country's lithium battery market is not large, and there are not many companies that can make diaphragms with good consistency and stability. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Which kinds of batteries are most commonly used for electric vehicles?