| abstract |
The invention discloses a vanadium-oxygen-sodium chlorophosphate cathode material, a preparation method and a sodium-ion battery, wherein the molecular formula is Na 3 (VO) 2 (PO 4 ) 2 F x Cl y Space group I4/mmm, belonging to the tetragonal system, said Na 3 (VO) 2 (PO 4 ) 2 F x Cl y The sodium-electricity positive electrode material with high storage stability, excellent electrochemical performance and all-weather performance is successfully prepared by regulating and controlling the anion position of the material to be uniform and regular cube shape in a one-step hydrothermal mode, the proportion of F, Cl anions is regulated and controlled, and the hydrothermal temperature is regulated and controlled to prepare sodium ionsThe anode material of the sub-battery, which is used for preparing the vanadium oxygen sodium chlorophosphate anode material, has more excellent electrochemical performance, simple synthesis process method, no need of precise instruments and suitability for large-scale production. |