A composite cathode material of polyanion and layered oxide for sodium-ion battery and method of synthesizing thereof

Abstract

Disclosed is polyanion-layered oxide composite cathode material for a sodium battery or sodium-ion battery, the material comprising a polyanion and a layered oxide, wherein the polyanion is Na3V2(PO4)3 (NVP) or Na4VMn(PO4)3 (NVMP); wherein the layered oxide is selected from the group consisting of O3/P3-NaxMyOz, O3/P2-NaxMyOz, O3-NaxMyOz, P2-NaxMyOz, and P3-NaxMyOz; and wherein x is ≥0.9, 0.8≤y≤1.0, and z is ≤2. The NVP can be Zn doped NVP. Also disclosed is a method of synthesizing the polyanion-layered oxide composite cathode material as disclosed herein. Further disclosed is a sodium battery or sodium ion battery comprising the polyanion-layered oxide composite cathode material as disclosed herein.

Dependencies are inferred from the claim text.