NOVELTY - The method comprises: forming an encapsulating film on a substrate, where the encapsulating film includes graphene; depositing particles on the encapsulating film; depositing a temporary layer on the particles and the encapsulating film; removing the substrate; and removing the temporary layer to cause the particles to form a cluster that is partially encapsulated by the encapsulating film. The step of forming the encapsulating film is performed by chemical vapor deposition. The chemical vapor deposition is partially accomplished with methane and hydrogen.    USE - The method is useful for manufacturing an article comprising energy storage device, which is useful as a battery such as lithium-ion battery and a supercapacitor (all claimed) such as electrochemical double-layer capacitors and pseudocapacitors.    ADVANTAGE - The method is capable of manufacturing the article with improved performance and cyclability.    DETAILED DESCRIPTION - The method comprises: forming an encapsulating film on a substrate, where the encapsulating film includes graphene; depositing particles on the encapsulating film; depositing a temporary layer on the particles and the encapsulating film; removing the substrate; and removing the temporary layer to cause the particles to form a cluster that is partially encapsulated by the encapsulating film. The step of forming the encapsulating film is performed by chemical vapor deposition. The chemical vapor deposition is partially accomplished with methane and hydrogen. The particles have an average diameter of 10 nm to 10 mu m. The particles are deposited by spray coating or dip coating. The temporary layer comprises a polymeric material or a polymeric photoresist material. The temporary layer are deposited by spray coating, dip coating or spin coating. The substrate is removed using wet chemical etching. The temporary layer is removed using wet chemical etching. The step of removing the temporary layer comprises one of centrifugation and supercritical drying. The method further comprises installing the cluster into an energy storage device. An INDEPENDENT CLAIM is included for an article of manufacture.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic sectional view of a battery.    Positive current collector (410)    Cathode (420)    Electrolyte (430)    Separator (440)    Anode. (450)