▎ 摘　　要

NOVELTY - A negative electrode material comprises aggregate containing an active material, a carbon material and a dopant element. The carbon material is shown in a Raman spectrum obtained by Raman spectroscopy using a measuring light source with a wavelength of 532 nm, the G band is observed from 1530-1630 cm-1and the D band is observed from 1280-1380 cm-1, and the ratio of the peak intensity (ID) of the D band and the peak intensity (IG) of the G band is 1-2.5. USE - Negative electrode material for lithium ion battery (claimed) used in electric automobile and electronic product. ADVANTAGE - The negative electrode material has high energy density, high output power, long cycle life and small environment pollution, and improves the first efficiency of the lithium ion battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the negative electrode material, which involves preparing a precursor after mixing active materials, dopants, a carbon source (c1) and a solvent, and heat-treating the precursor at 800-980° C to obtain aggregates. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart of a method for preparing an anode material. (Drawing includes non-English language text) S100Mixing step S200Heat-treating step S300Coating treatment step