▎ 摘　　要

NOVELTY - Preparing boron-doped graphene material, comprises mixing boric acid and graphene oxide dispersion liquid, and freeze-drying to obtain precursor powder, and calcining the precursor powder under argon-hydrogen atmosphere to obtain final product. USE - The boron-doped graphene material is useful as active component of lithium ion battery cathode material (claimed). ADVANTAGE - The boron-doped graphene material has relatively high cycle life during charge and discharge cycle. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for use of boron-doped graphene material as active component of lithium ion battery cathode material.