▎ 摘　　要

NOVELTY - The preparation method of cathode material involves (1) adding carbon nanotubes to the graphene-based dispersion, adding precursor of non-carbon material, and fully stirring to obtain mixed dispersion, (2) adding the mixed dispersion to a hydrothermal reactor, and hydrothermally reacting to obtain graphene-carbon nanotube-non-carbon material hydrogel, and (3) fully soaking the obtained hydrogel in deionized water, and removing impurities for moisture removal, where the cathode material includes graphene having a three-dimensional porous structure and one-dimensional linear carbon nanotubes, and a non-carbon material that is supported on graphene and carbon nanotubes. USE - Preparation method of cathode material for graphene-based lithium ion battery. ADVANTAGE - The method enables preparation of cathode material with fast ion transmission path, excellent electrical contact and satisfied volume expansion of non-carbon active materials.