Preparation of highly oriented graphene oxide films and graphite films derived therefrom

摘要

(a) preparing a GO dispersion having a GO sheet dispersed in a fluid medium, or a GO gel having GO molecules dissolved in a fluid medium; (b) distributing the GO dispersion liquid or gel onto the surface of the application roller rotating in the first direction to form an applicator layer of the GO, and applying the coating layer in a second direction opposite to the first direction Moving to the surface of the film to form a wetted layer of GO on the support film; And (c) removing said fluid medium from the wet layer of GO to form a dry layer of GO having an interplanar spacing d ₀₀₂ of 0.4 nm to 1.2 nm and an oxygen content of 5 wt% or greater. A method for producing a graphene oxide (GO) film. The dried GO layer can be heat-treated to produce a graphite film.