Porous Metal Filter Application in Lithium Battery

As a new type of secondary battery with high energy density, many cycles and long service life, lithium battery is currently widely used in mobile power, electric vehicles, home appliances, smart wearable devices, 3C products and other fields. With the continuous depletion of fossil energy, lithium battery has gradually become the main power source of new energy vehicles and energy storage, which has attracted wide attention from all walks of life in recent years.

Lithium battery is composed of positive electrode, negative electrode, electrolyte and diaphragm, etc., in the production process of these parts, a lot of filtration and purification technology is required. Shinkai has used its professional advantages in filtration to help lithium battery manufacturers solve a large number of problems, specifically:

1) Production of ternary cathode materials: The co-precipitation method is used to produce ternary material precursors, which requires the use of metal membrane filters to filter the produced ternary precursor particles. At the same time, the cleaning water produced by ternary material cleaning also requires metal membrane filtration;

2) The exhaust gas from the silicon anode has a very high temperature, so it is suitable to use metal membrane elements; anode: artificial graphite or carbon produced by vapor deposition method.

3) Electrolyte solvent DMC (dimethyl carbonate): DMC is produced by transesterification method, and metal membranes are used to filter Na2CO3/NaHCO3;

4) Electrolyte: pre-crystallization filter in the production process of lithium hexafluorophosphate LiPF6;

5) Electrolyte liquid: Before preparing the electrolyte, it needs to be filtered and purified with a metal membrane filter, then the electrolyte is added, stirred to dissolve, and then the undissolved electrolyte and other impurities are filtered out with metal membranes.

The Sinter Metal Filter Elements produced by Shinkai has the advantages of corrosion resistance, high precision and good reproducibility, which is very suitable for various production links of lithium batteries. In China, leading enterprises in the lithium battery industry, including Wanhua Chemical Group , XTC New Materials, Capchem, etc., are already our customers. If you have similar questions, please contact Shinkai team.