▎ 摘　　要

NOVELTY - Preparing graphene/ternary material composite, comprises (a) forming a mixed dispersion of ternary material and graphene oxide powder in an organic solvent, (b) adding a reducing agent to the mixed dispersion of the step (a), performing a reduction reaction while stirring at 80-160 degrees C, and obtaining reduction reaction mixture over reduction time of 60-240 min, and (c) evaporating the reduction reaction mixture while stirring, drying, subjecting mixture to low-temperature annealing under inert atmosphere to obtain graphene/ternary material composite having three-dimensional network structure. USE - The graphene/ternary material composite is useful for lithium ion battery (claimed).