Recently, the University of Science and Technology of China (USTC) and Hefei Guoxuan High-tech Power Energy Co., Ltd. applied for a patent related to a coated separator, aimed at enhancing the overall performance and safety of batteries. The patent, titled “A Coated Separator, Its Preparation Method, and Application,” was officially published with the publication number CN119852640A, and the application date was January 2025.
The patent summary reveals that this invention pertains to the field of lithium metal battery technology, specifically focusing on a coated separator, its preparation method, and its applications. The coated separator comprises a base film and a coating formed on this base film. This coating includes lithium salts, oxides, and binders, with the lithium salts specifically comprising nitrogen-containing lithium salts.
The coated separator described in this application is designed to stabilize the electrolyte and promote the formation of a robust solid electrolyte interphase (SEI) layer. The oxides contribute mechanical reinforcement and possess a high specific surface area, while the binder enhances the wettability between the separator and the electrolyte. These three components work synergistically to address the primary issues plaguing lithium metal batteries by suppressing dendrite growth and promoting SEI stability, ultimately improving both battery performance and safety.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/chinese-university-of-science-and-technology-and-hefei-guoxuan-high-tech-apply-for-coated-diaphragm-patent-to-enhance-battery-performance-and-safety/
