▎ 摘　　要

NOVELTY - Object comprises: an uneven surface; and at least one graphene layer over the uneven surface. USE - The object is useful: as an electrode of the lithium-ion secondary battery; in electric device; and to manufacture of graphene (all claimed), where the electric device is e.g. electric vehicle, electric power tool, personal computer, mobile phone, lighting device, microwave, electric rice cooker, air conditioner and electric refrigerator. ADVANTAGE - The object: provides single or multi-layer graphene layer with uniform thickness even on a surface of the uneven object (with depressions and projections); prevents from crushing when swells; provides cathode material with high discharge capacity and withstands repeated charging and discharging; provides graphene that exhibits high speed charging and high power extraction; and provides storage batteries with low internal resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for manufacturing the graphene, comprising: immersing the object and an electrode in a solution including graphene oxide; applying voltage between the object and the electrode to form a graphene oxide over the object; and heating the object in vacuum or in a reducing atmosphere so that the graphene oxide formed over the object is reduced to graphene.