▎ 摘　　要

NOVELTY - Producing nano-catalyst film comprises (S100) preparing a graphene sheet dispersion, (S200) forming a nanoporous graphene membrane by coating the graphene sheet dispersion on a filtration membrane and vacuum filtration, (S300) coating a catalyst dispersion on the nanoporous graphene membrane and vacuum filtering to form a catalyst film and (S400) removing the filtration membrane. USE - The nano-catalyst film is useful for nano-catalytic electrodes (claimed). ADVANTAGE - The nano-catalyst film: has improved surface area; improves the efficiency of the catalytic reaction; is economical; prevents damage of high electrical conductivity of graphene; prevents damage the intrinsic properties of the catalyst; capable of large-area production; has simple manufacturing process; allows even nano-sized catalysts to be loaded onto the nanoporous graphene membrane as a support without loss; and allows catalyst to be loaded onto the nanoporous graphene membrane as a support, regardless of the type of catalytic material and without binding to a conductive material and a binder. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for manufacturing nano-catalytic electrodes comprising (i) preparing a graphene sheet dispersion, (ii) forming a nanoporous graphene membrane by coating the graphene sheet dispersion on a filtration membrane and vacuum filtration, (iii) coating a catalyst dispersion on the nanoporous graphene membrane and vacuum filtering to form a catalyst film, (iv) removing the filtration membrane and (v) transferring the catalyst film to an electrode. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart illustrating a method for manufacturing a nano-catalyst film (Drawing includes non-English language text). S100Preparing a graphene sheet dispersion S200Forming a nanoporous graphene membrane S210Drying the lane in vacuum S300Coating a catalyst dispersion on the nanoporous graphene membrane S400Removing the filtration membrane