▎ 摘 要
NOVELTY - A graphene-oxide film is coated with bile acid or its salts. USE - Graphene-oxide film is used for display device, semiconductor device, separation film, sensor, fuel cell, solar cell and lithium secondary battery (all claimed). ADVANTAGE - The graphene-oxide film has excellent physical-chemical stability and mechanical strength. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of graphene oxide film.