▎ 摘　　要

NOVELTY - Method for preparing coated modified artificial graphite negative electrode material, involves sequentially wet-coating using a coating agent comprising coal tar residue and graphene slurry and carbonizing secondary particles of artificial graphite, where the secondary particles of artificial graphite comprise petroleum coke and/or coal coke and asphalt with a softening point of 130-160 degrees C. The mass ratio of the coal tar residue to the graphene in the graphene slurry is 6:0.005-6:0.64. USE - The method is useful for preparing coated modified artificial graphite negative electrode material in a lithium-ion battery (all claimed). ADVANTAGE - The electrode material has charge-discharge rate and high-capacity first-time efficiency, excellent performance in terms of discharge capacity, first-time efficiency, and high-rate of charging and discharging.