▎ 摘　　要

NOVELTY - Preparing a cathode material for lithium batteries, comprises (1) adding graphene oxide to a solvent, introducing a surfactant, and dispersing the mixture using ultrasonic stirring to obtain a first dispersion solution where in the first dispersion solution, the concentration of graphene oxide is 2-3 g/l, (2) adding a reducing agent to the first dispersion solution, and dispersing the mixture using ultrasonic stirring to obtain a second dispersion solution, (3) placing sponge A into the second dispersion solution for impregnation, then removing it and subjecting it to vacuum freeze-drying to obtain Sponge B, (4) carbonizing sponge B under a protective atmosphere. USE - The method is useful for preparing lithium lithium of lithium adding the oxidized graphene into the solvent, where the lithium lithium is useful in lithium ion battery used in mobile electronic device and electric vehicle. ADVANTAGE - The method enables to prepare lithium cathode, which solves the problem that the graphene technology is easy to agglomerate as cathode material, and improves material coulomb efficiency and cycle performance.