Huawei publishes patent for composite positive electrode material for sodium batteries

Recently, Huawei Technologies Co., Ltd. announced an invention patent titled "Sodium Battery Composite Cathode Material and Its Application". The application date of this patent is September 23, 2022, and the application publication number is CN117810379A. The patent abstract shows that the composite cathode material includes a core and a coating layer covering the core, the core includes a layered sodium cathode active material, and the de-sodium potential of the coating layer material is higher than that of the core.