▎ 摘 要
NOVELTY - The multi-layered graphene film has a first graphene layer (22), a spacer layer such as graphene oxide layer (24a) provided on the first graphene layer, and an upper graphene layer on the spacer layer. The height of the spacer layer maintains a desired distance between the first graphene layer and the upper graphene layer. The first graphene layer is on a metal film while the spacer layer is an oxide layer. USE - Multi-layered graphene film used as electrode of energy storage device (claimed) e.g. battery, supercapacitor. ADVANTAGE - Increases capacity of the energy storage device since the electrolyte may penetrate deeply between the graphene layers of the multi-layered graphene film, and the contact area between the electrolyte and the graphene film increases. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for (1) a manufacturing method of multi-layered graphene film; (2) an energy storage device; and (3) a manufacturing method of energy storage device. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a multi-layered graphene film. First graphene layer (22) Graphene oxide layer (24a) Substrate (26)