▎ 摘　　要

NOVELTY - Making (M1) a core/graphene-based shell structure, comprises: (a) obtaining a composition (108) comprising core nano- or microstructures and graphene-based structures (104) having at least a portion of a surface coated with a curable organic material (102); and (b) curing the organic material and optionally quenching the composition to allow the graphene-based structures to self-assemble around the core nano- or microstructures to produce a core/graphene-based shell structure comprising a graphene-based shell encompassing a core nano- or microstructure. USE - The method (M1) is useful for making a core/graphene-based shell structure (claimed) which is useful in chemical reactions or energy storage devices, where the chemical reactions include a hydrocarbon hydroforming reaction, a hydrocarbon hydrocracking reaction, a hydrogenation of hydrocarbon reaction and/or a dehydrogenation of hydrocarbon reaction. ADVANTAGE - The method: is simple and makes a material having a multifunctional architecture in a minimal number of steps, while limiting or avoiding the use of harsh acid or base conditions; relies on the self-assembly of graphene-based structures (e.g. graphene flakes or other derivatives of graphene) that can produce the graphene-based shell or a hybrid nano- or microstructure architecture design; and utilizes the calcined hydrotalcite-type shell which protects any nano- or micro-structures that are dispersed on the graphene-based shell, thus preventing or reducing the sintering, aggregation, and/or agglomeration of the dispersed nano- or microstructures. DETAILED DESCRIPTION - Making (M1) a core/graphene-based shell structure, comprises: (a) obtaining a composition (108) comprising core nano- or microstructures and graphene-based structures (104) having at least a portion of a surface coated with a curable organic material (102), where the core nano- or microstructures and graphene-based structures are dispersed throughout the composition; and (b) curing the organic material and optionally quenching the composition to allow the graphene-based structures to self-assemble around the core nano- or microstructures to produce a core/graphene-based shell structure comprising a graphene-based shell encompassing a core nano- or microstructure. INDEPENDENT CLAIMS are also included for: (1) making (M2) a graphene-based shell structure, comprising (a1) obtaining a composition comprising a curable organic material and graphene-based structures dispersed throughout the composition, (b1) subjecting the composition to conditions sufficient to cure the organic material and form polymer coated graphene-based structures (110), and (c1) quenching the composition so that the polymer coated graphene-based structures self-assemble to form a graphene-based shell structure; and (2) a multilevel shell structure comprising the graphene-based shell having a void space defined by the inner surface of the graphene-based shell, and a calcined hydrotalcite shell, where metallic nano- or microstructures are dispersed on the outer and/or inner surfaces of the graphene-based shell, and the calcined hydrotalcite shell encompasses the graphene-based shell and dispersed metallic nanostructures. DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of an in situ preparation of a material having a graphene-based shell structure. Curable organic material (102) Graphene-based structures (104) Composition of core nano- or microstructures and graphene-based structures (108) Polymer coated graphene-based structures (110) Hollow graphene-based structures (114)