▎ 摘　　要

NOVELTY - Converting carbon dioxide into graphene, comprises: contacting a metal with gaseous carbon dioxide; and irradiating a surface of the metal with at least one laser beam to convert the gaseous carbon dioxide into graphene on the surface of the metal. USE - The method is useful for converting carbon dioxide into graphene (claimed) which is useful in energy storage and electronics. ADVANTAGE - The method provides graphene that has excellent electrical, optical, and thermal properties; and converts carbon dioxide into graphene, thus ameliorating the carbon dioxide emissions problem in the environment. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a system for converting carbon dioxide into graphene, comprising: at least one reaction vessel (210) configured to contact a metal with gaseous carbon dioxide; and at least one laser device (230) configured to irradiate a surface of the metal with a laser beam (240) to convert the gaseous carbon dioxide into graphene on the surface of the metal. DESCRIPTION OF DRAWING(S) - The figure shows a schematic diagram of a system for preparing graphene on surfaces of metal pieces using a carbon dioxide laser device. Metal piece (200) Reaction vessel (210) Laser device (230) Laser beam (240) Laser beam expander (270)