▎ 摘　　要

NOVELTY - The method comprises (1) mixing the sodium source compound, divalent cobalt source compound, and phosphorus source compound according to the proportion, and then adding carbon source to obtain a mixed material, (2) adding medium to the mixed material, and ball milling and mixing reaction to obtain sodium cobalt phosphate pyrophosphate precursor, and (3) sintering the sodium cobalt pyrophosphate precursor in stages under an inert atmosphere to obtain the anode material. USE - Method for preparing high-voltage sodium-ion battery anode carbon composite cobalt-based mixed with sodium phosphate. ADVANTAGE - The method is simple and easy to operate, has convenient industrial production, adopts the high-temperature solid-phase ball milling method, greatly shortens the technological process, reduces the cost and reduces the carbon content in the active material, and improves the overall energy density of the material. The prepared Na4Co3(PO4)2P2O7/C has good carbon coating effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a sodium cobalt mixed-phosphate (Na4Co3 (PO4) 2P2O7/C) anode material.