METHOD FOR PREPARING REDUCED GRAPHENE OXIDE-BASED COMPOSITE FILM

摘要

Disclosed in the present invention is a method for preparing a reduced graphene oxide-based composite film. The method uses graphene oxide as a raw material, which is mixed with other substances in water or another solvent, then a reduced graphene oxide-based composite film or a reduced graphene oxide-based composite gel film is prepared by means of a hydrothermal reaction or a solvothermal reaction in a closed reaction vessel, and the reduced graphene oxide-based composite gel is converted into a composite film by means of freeze drying or supercritical drying. A thinner composite film may be obtained from a synthesized composite film by means of dipping and drying in a solvent. Alternatively, a reduced graphene oxide-based composite film having a higher graphene reduction degree and a more complete crystal structure may be obtained by performing high temperature reduction on a reduced graphene oxide-based composite film.