▎ 摘　　要

NOVELTY - Composition comprises at least one three-dimensional structure of graphene sheets, where the graphene sheets are crosslinked by covalent carbon bonds. USE - The composition is useful for producing a graphene aerogel, which is useful in device comprising a capacitor, battery, electrode, sensor, actuator, membrane, catalyst support or hydrogen storage device (all claimed). ADVANTAGE - The composition utilizes ultra-low density graphene aerogels with high electrical conductivities and large surface areas. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) ; (2) a method (M1) for producing a graphene aerogel comprising: preparing a reaction mixture comprising a graphene oxide (GO) suspension and at least one catalyst; curing the reaction mixture to produce a wet gel; drying the wet gel to produce a dry gel; and pyrolyzing the dry gel to produce a graphene aerogel; (3) producing a graphene aerogel comprising the step of providing a reaction mixture comprising at least one graphene precursor, and converting the graphene precursor to a graphene aerogel in a sol gel process; and (4) a device comprising the composition.