▎ 摘　　要

NOVELTY - Graphene material for lithium-ion batteries comprises two-dimensional graphene nanosheets with in-plane pores and wrinkled structures, where the specific surface area of the two-dimensional graphene nano sheets is 300-800 m2/g. USE - Material for lithium graphene of ion battery used in consumer electronics, electric automobile, and large-scale energy storage used as lithium active material of lithium-ion battery cathode. ADVANTAGE - The graphene material has high first coulomb efficiency, high reversible capacity and good multiplying power performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: A preparation method of the graphene material for lithium-ion battery; and An ion battery lithium cathode.