▎ 摘　　要

NOVELTY - A battery negative electrode comprises graphite core layer, and ion conductive agent layer is coated on the outer surface of the graphite core layer. USE - Negative electrode used in lithium battery (claimed). ADVANTAGE - The method solves the problem of charging efficiency of the battery is influenced due to the low ion conductivity caused by the common doping of ion conductive agent and graphite. The structure that the ion conductive agent is coated on the surface of the graphite can enable the graphite coated with the ion conductive agent to form a structure capable of enabling charges to freely move in the negative electrode, which reduces resistance of the charges in the negative electrode, accelerates the charge conductivity, reduces the temperature in the battery, and improves the charging efficiency. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the battery negative electrode, which involves adding graphite and ion conductive agent into a solvent, stirring at normal temperature to obtain a composite slurry, calcining the composite slurry for 3-5 hours to obtain a composite material block, cooling the composite block, grinding the composite material block and sieving by a screen to obtain composite powder