▎ 摘　　要

NOVELTY - A negative electrode material comprises pre-lithiated graphite and pre-lithiated graphene, which are crosslinked with each other using a crosslinking agent, to form a crosslinked structure. USE - Negative electrode material is used in lithium-ion battery (claimed). ADVANTAGE - The negative electrode material improves capacity stability of the battery during cycle, and first effect and cycle capacity retention rate of the battery by preconditioning. The addition of graphene can improve electron and ion conduction of graphite materials. The crosslinked structure can improve the bonding force of negative electrode material, and reduce the risk of the negative electrode material being peeled off during the cycle. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the negative electrode material, which involves (S1) taking graphite as raw material, pre-oxidizing graphite, oxidizing, filtering, washing and drying to obtain graphene oxide, (S2) dispersing graphene oxide, graphite and crosslinking agent in a solvent (A), crosslinking, filtering and drying to obtain mixed carbon source, and (S3) dispersing the mixed carbon source and lithium source in a solvent (B), adding electron transfer carrier, performing pre-lithiation treatment, filtering and drying.