▎ 摘　　要

NOVELTY - Production of mass of graphene-embraced particulates or secondary particles directly from graphitic material comprises mixing graphitic material particles and primary particles of solid cathode active material in impacting chamber of energy impacting apparatus; operating the energy impacting apparatus under certain conditions for peeling off graphene sheets from graphitic material particles and transferring the peeled graphene sheets to surfaces of primary particles of solid cathode active material to produce graphene-embraced or graphene-encapsulated primary particles of cathode active material; recovering the graphene-embraced or graphene-encapsulated primary particles from the impacting chamber; and combining mass of recovered graphene-embraced or graphene-encapsulated primary particles and sheets of second graphene material. USE - The method is for producing graphene-embraced particulates or secondary particles useful as cathode active material for lithium-ion battery, lithium metal secondary battery, lithium-sulfur battery, lithium-air battery, lithium-selenium battery, sodium-ion battery, sodium metal secondary battery, sodium-sulfur battery, sodium-air battery, magnesium-ion battery, magnesium metal battery, aluminum-ion battery, aluminum metal secondary battery, zinc-ion battery, zinc metal battery, zinc-air battery, lithium-ion capacitor, or sodium-ion capacitor. ADVANTAGE - The method is simple, fast, scalable, environmentally benign, and cost-effective. DETAILED DESCRIPTION - Production of mass of graphene-embraced particulates or secondary particles directly from graphitic material comprises: (A) mixing graphitic material particles, primary particles of solid cathode active material and optionally ball-milling media in impacting chamber of energy impacting apparatus, in which the graphitic material has never been previously intercalated, oxidized, or exfoliated, and the impacting chamber contains no previously produced isolated graphene sheets; (B) operating the energy impacting apparatus under certain conditions for peeling off graphene sheets from graphitic material particles and transferring the peeled graphene sheets to surfaces of primary particles of solid cathode active material to fully embrace or encapsulate the primary particles to produce graphene-embraced or graphene-encapsulated primary particles of cathode active material; (C) recovering the graphene-embraced or graphene-encapsulated primary particles from the impacting chamber, in which at least one of the embraced or encapsulated primary particles contains graphene sheets of first graphene material embracing or encapsulating the primary particles; and (D) combining mass of recovered graphene-embraced or graphene-encapsulated primary particles, optionally conductive additive, and sheets of second graphene material into mass of graphene-embraced particulates which comprise graphene-encapsulated primary particle(s) of cathode active material comprising primary particle of cathode active material and sheets of first graphene material overlapped together to embrace or encapsulate the primary particle, in which the graphene-encapsulated primary particles along with optional conductive additive are further embraced or encapsulated by sheets of second graphene material, and each of the first and second graphene materials is present at 0.01-20 wt.% and the optional conductive additive is present at 0-50 wt.%.