Lithium vanadate anode material, anode, battery and anode material preparation method

The invention discloses a lithium vanadate anode material, an anode, a battery and an anode material preparation method, and belongs to the field of batteries. The lithium vanadate anode material is of a core-shell structure, the core is lithium vanadate, the shell is a coating layer, lithium vanadate is nanometer granules or micrometer level secondary granules formed by nanometer granules, the thickness of the coating layer is 2-30nm, and the coating layer comprises a conductive coating layer or/and a stable coating layer. An organic carbon source is introduced into a high temperature reactor with an inert gas as a carrier by using a chemical vapor deposition method, in order to from the conductive coating layer of amorphous carbon or graphitic carbon on the surface of the core. The conductive coating layer and the stable coating layer are prepared by using a vacuum coating method, a magnetron sputtering method, a pulsed laser deposition method or an atomic layer deposition method. Lithium vanadate is used as an active anode material to obtain high coulombic efficiency, large specific capacity and good rate capability, and the proper embedded escape potential and the considerable volume of lithium vanadate are fully utilized.