Lithium battery separator-Boehmite coating

AlOOH as a lithium battery separator ceramic coating has the following advantages:

Low hardness, in the process of cutting and coating, the mechanical wear is small, which can reduce the risk of equipment wear and foreign matter introduction; high heat resistance temperature, good compatibility with organic substances; low density, the same quality of AlOOH than high purity Al2O3 is coated with 25% more area, with high coating flatness and low internal resistance; low energy consumption, and the production process is more environmentally friendly; the preparation process is simpler and the production cost is low.

At present, the main preparation methods include improved Bayer method, aluminum direct hydrolysis method, organic alkoxide hydrolysis method, sol-gel method, hydrothermal method, etc. Industrially, the boehmite slurry is obtained by the gibbsite hydrothermal method, and then the AlOOH powder is obtained by filtration, drying, crushing and classification. In addition, the microscopic morphology of AlOOH is easier to control, which will endow it with abundant macroscopic properties.

Application: At present, the consumption market of boehmite in lithium battery is mainly concentrated in Asia Pacific, Europe and America. Among them, the global lithium battery boehmite companies are mainly Nabaltec, while domestic power battery companies such as CATL, Lishen, and Xinwangda are also accelerating the switching of boehmite materials. As various battery companies attach importance to boehmite, its industrial development has become more and more clear.