▎ 摘　　要

NOVELTY - An antimony/tin phosphate-based anode material comprises antimony(III) phosphate/reduced graphene oxide material or tin pyrophosphate/reduced graphene oxide material comprising antimony(III) phosphate nano rod with length of 90-120 nm and tin pyrophosphate nanoparticle with particle size of 40-60 nm grown on graphene oxide sheet; content of graphene in antimony/tin phosphate-based anode material is 12-18 wt.%. USE - Antimony/tin phosphate-based anode material used for sodium ion batteries anode material (claimed). ADVANTAGE - The product has increased electrical conductivity, good cycle performance and rate performance. The antimony(III) phosphate/reduced graphene oxide material has energy density of up to 99.8 Wh/Kg and power density of 1.2 kW/Kg; and tin pyrophosphate/reduced graphene oxide material has an energy density of up to 120.8 Wh/kg and power density of 0.049 kW/Kg. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) preparation of antimony/tin phosphate-based anode material comprising dispersing graphene in solvent, adding antimony source, tin source, and phosphorus source, heating and dissolving, performing hydrothermal reaction for 4-6 hours at 100-120 degrees C, centrifuging, taking reaction product, washing with ethanol and water, drying, pumping inert gas, and calcining at 400-550 degrees C for 4-6 hours; and (2) sodium ion batteries anode material comprising cathode, anode, separator, electrolyte and outer casing; where cathode and anode is prepared by taking active material, conductive agent and binder, mixing, adding solvent, forming slurry, grinding, and coating into current collector. The anode active material is antimony/tin phosphate-based anode material, and cathode active material is Na3V2(PO4)3/C.