▎ 摘　　要

NOVELTY - Preparing NaTi2V(PO4)4-three-dimensional graphene composite material involves adjusting pH value of multilayer graphene oxide solution, performing first hydrothermal reaction, freezing, drying to obtain three-dimensional graphene, adding the obtained three-dimensional graphene, sodium source, titanium source, phosphorus source and vanadium source into water and glycerol, performing a second hydrothermal reaction to obtain NaTi2V(PO4)4/three-dimensional graphene precursor, and calcining the obtained NaTi2V(PO4)4/three-dimensional graphene precursor to obtain a NaTi2V(PO4)4/three-dimensional graphene composite material. USE - Method for preparing NaTi2V(PO4)4-three-dimensional graphene composite material used for preparing sodium-ion battery (claimed). ADVANTAGE - The prepared composite material has three-dimensional conductive network and strong electron transport ability, and can be used as a positive electrode material of a sodium battery without using conductive carbon as a conductive network and a supporting skeleton of the pole piece, which greatly simplifies the fabrication process of the battery core pole piece. DESCRIPTION OF DRAWING(S) - The drawing shows a first charge-discharge curve image of the prepared battery. (Drawing includes non-English language text).