▎ 摘　　要

NOVELTY - Battery active material includes multiple of graphene platelets to which are coupled multiple of heteroatoms and/or heteroionic species. The graphene platelets have a lateral size from 50-50,000 nanometer and a thickness from 0.34-50 nanometer. The graphene platelets have a carbon to oxygen ratio of at least 50. USE - Battery active material for electrode (claimed). ADVANTAGE - The battery active material has significantly improved conductive properties as opposed to unmodified graphene platelets and can be easily produced at mass quantities and low cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of preparing a battery active material, which involves providing expanded graphite flakes in a liquid dispersant, and admixing multiple of heteroatoms and/or heteroionic species with the graphite flakes to generate a mixed dispersion, and subjecting the mixed dispersion to high-pressure homogenization under conditions that produce multiple of graphene platelets to which are coupled multiple of heteroatoms and/or heteroionic species.