▎ 摘　　要

NOVELTY - Anode lithium supplement material comprises lithium based substrate (1a), and carbon present on the substrate. USE - The anode lithium supplement material is useful as anode pole piece of electrochemical device for electronic device (all claimed). ADVANTAGE - The anode lithium supplement material: has strong chemical stability and can effectively improve the particle agglomeration phenomenon during the slurry mixing process; and ensures the anode pole piece can realize the supplement of active lithium and effectively improve the energy density of the electrochemical device. DETAILED DESCRIPTION - Anode lithium supplement material comprises lithium based substrate of formula (xLi2O.yM) (1a), and carbon present on the substrate. a, b = integer. x = more 0; y = 0.4x-2x; and M = Mn, Fe, Co, Ni, Cu, Cr and/or V. INDEPENDENT CLAIMS are also included for: (1) preparation of anode lithium supplement material, comprising (1) dispersing naphthalene in a solvent, slowly adding lithium metal fragments or powder, and uniformly reacting to obtain lithium naphthalene solution, (2) slowly adding oxide (MaOb) into the lithium naphthalene solution, stirring and reacting uniformly, filtering and drying to obtain (1a), (3) carrying out ball milling mixing of (1a) and inorganic carbon source, and dispersing uniformly to obtain reaction mixture, (4) calcining the mixture in an inert atmosphere to obtain anode lithium supplement material, where the molar ratio of naphthalene to lithium metal is 1:0.6-1, the molar ratio of naphthalene to oxide MaOb is 1:0.1-0.5, and the ratio of the number of moles of naphthalene to the mass of the inorganic carbon source is 1:0.05-0.3 mol/g; and (2) anode pole piece, comprising 1-10 wt.% anode lithium supplement material.