▎ 摘　　要

NOVELTY - Lithium-ion battery electrode material comprises at least one first core bodies, and a metal lithium coating, where the metallic lithium coating coats the surface of the at least one first core bodies, and protective coating covering the outside of the metallic lithium coating, so that the metallic lithium coating is isolated from air. USE - The lithium-ion battery electrode material is useful in lithium ion battery (claimed). ADVANTAGE - The lithium-ion battery electrode material supplements active lithium ions in battery chemical reactions, reduces the active lithium ions, and improves coulombic rate of battery materials, lithium-ion de-intercalation or intercalation efficiency, and energy density and cyclic stability of lithium-ion batteries. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing the lithium-ion battery electrode material, comprising heating the metal lithium to the molten state, obtaining molten metal lithium, immersing the first core into the molten metal lithium, making the surface of the first core coated with a metal lithium coating, coating a first solution on the surface of the metal lithium coating layer, and forming a protective coating coated on the outer side of the metal lithium coating layer; (2) prepairing lithium ion battery electrode material, comprising performing one vapor deposition on the first core body so that the first core body is covered with a metal lithium coating, where the evaporation source of the one-time evaporation is metallic lithium, and the core body with the metal lithium coating is subjected to secondary evaporation to form a protective coating on the surface of the metal lithium coating; and (3) a lithium ion battery, comprising a positive pole piece, a negative pole piece, a diaphragm, an electrolyte and a shell, where the material of the positive pole piece or the negative pole piece comprises the lithium ion battery electrode material.