**Liyang CAS Unveils Sodium Battery Patent with Mg-Ti-Zr Coated Cathode Material**

**[Sodium Battery Patent: CAS (China) Energy Storage Materials Tech Co., Ltd. Patent]** On October 22, 2024, Liyang CAS (China) Energy Storage Materials Tech Co., Ltd. disclosed an invention applied for on April 18, 2023, with the publication number CN118825208A. This invention pertains to a composite-coated cathode material and sodium-ion battery, falling within the technical field of sodium-ion batteries. It specifically addresses the issue of electrochemical performance degradation associated with the coating of sodium-ion cathode materials in current technologies, such as reduced battery capacity and degraded rate performance.

The cathode material of this invention consists of a matrix material and a coating material containing magnesium (Mg), titanium (Ti), and zirconium (Zr) elements. The selection of these three elements as the coating material serves to protect the cathode interface, inhibit the decomposition of the electrolyte, and provide a certain level of high-temperature flame retardancy. Additionally, this coating consumes residual alkali on the surface, significantly enhancing the stability of the cathode material, thus improving the battery's capacity and other electrochemical performances.