▎ 摘　　要

NOVELTY - N-doped graphene slurry is prepared by preparing N-doped graphene by adding graphite oxide into a nitrogen source aqueous solution, performing hydrothermal reaction after dispersion, and adding the obtained solid-phase product into a nitrogen-containing organic solvent for dispersion to obtain a dispersion liquid A. The expanded graphite is dispersed in a nitrogen-containing organic solvent to obtain a dispersion liquid B. The dispersion liquid A and the dispersion liquid B are respectively placed in a microwave muffle furnace for treatment. The dispersion liquid A and the dispersion liquid B are mixed in a microwave muffle furnace to obtain a dispersion liquid C. The nitrogen-doped graphene slurry is prepared and sequentially sanded and homogenized the dispersion liquid C to obtain the N-doped graphene slurry for the modified graphite. USE - N-Doped graphene slurry. ADVANTAGE - The N-doped graphene slurry has obviously improved electrochemical performance of graphite, and promoted development of the high-performance graphene modified lithium ion battery graphite cathode material.