▎ 摘　　要

NOVELTY - Preparation of graphene-carbon nanotube laminate involves dispersing (S310) graphene in an aqueous metal hydroxide solution, adsorbing metal hydroxide on graphene, heating graphene at 400-900 degrees C in a vacuum or in an inert atmosphere, forming (S320) pores in the graphene, and laminating (S330) the graphene and carbon nanotubes by dispersing the graphene having pores and the carbon nanotubes in a dispersion medium. The metal in the metal hydroxide solution is chosen from lithium, sodium and potassium. USE - Preparation of graphene-carbon nanotube laminate used in material for electrode used in electrical double layer capacitor (all claimed) for wind power generation system and electric vehicle. Can also be used for lithium-ion battery and sensor. ADVANTAGE - The method enables efficient preparation of graphene-carbon nanotube laminate. The electrolytic solution ions are penetrated into interior of the laminate through pores of graphene, the penetrated electrolytic solution ions can easily move between the graphene layers, such that graphene and electrolytic solution ions can exchange electrons inside the laminate. The electrical double layer capacitor obtained using the graphene-carbon nanotube laminate has improved energy density and power density. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) electrode material, which consists of the laminate of graphene and carbon nanotubes. The graphene has pores through which the electrolytic solution ions are passed, and is laminated via the carbon nanotubes at intervals through which the electrolytic solution ions are passed; and (2) electrical double layer capacitor, which comprises an electrode and an electrolyte. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart of manufacture of the laminate. (Drawing includes non-English language text) Dispersing step (S310) Formation of pores in graphene (S320) Laminating step (S330)