▎ 摘　　要

NOVELTY - Producing a highly conducting film of conductor-bonded graphene sheets that are highly oriented, comprises e.g. (a) preparing either a graphene dispersion having discrete graphene sheets dispersed in a fluid medium or a graphene oxide gel having graphene oxide molecules dissolved in a fluid medium, (b) dispensing and depositing the dispersion or gel onto a surface of supporting solid substrate under a shear stress to form a wet layer of graphene or graphene oxide, and (c) at least partially removing the medium from the wet layer to form a dried layer of graphene or graphene oxide. USE - The process is useful for producing the highly conducting film of conductor-bonded oriented graphene sheets, which is useful in a thermal management device (all claimed) e.g. a heat dissipation film used in a smart phone, tablet computer, flat-panel TV display or other microelectronic or communications device. ADVANTAGE - The process: provides the graphitic film which exhibits an inter-graphene spacing of less than 0.337 nm and a mosaic spread value of less than 1, and a degree of graphitization of not less than 80% or not less than 90% and/or a mosaic spread value of less than 0.4 (claimed); and provides the highly conductive film which is composed of conducting binder material-bonded graphene sheets or molecules that are highly oriented along film plane directions, exhibits an unprecedented combination of exceptionally high degree of graphene sheet orientation, high thermal conductivity, high electrical conductivity, high tensile strength, high flexural strength and high elastic modulus, and exhibits excellent mechanical strength and stiffness (modulus). DETAILED DESCRIPTION - Producing a highly conducting film of conductor-bonded graphene sheets that are highly oriented, comprises (a) preparing either a graphene dispersion having discrete graphene sheets dispersed in a fluid medium or a graphene oxide gel having graphene oxide molecules dissolved in a fluid medium, where the graphene oxide molecules contain an oxygen content of higher than 5 wt.%, (b) dispensing and depositing the graphene dispersion or graphene oxide gel onto a surface of supporting solid substrate under a shear stress to form a wet layer of graphene or graphene oxide, having oriented graphene sheets or graphene oxide molecules, on the supporting substrate, (c) at least partially removing the fluid medium from the wet layer of graphene or graphene oxide to form a dried layer of graphene, or dried layer of graphene oxide having an inter-planar spacing (d(002)) of 0.4-1.2 nm as determined by X-ray diffraction and an oxygen content of not less than 5 wt.%, (d) heat treating the dried layer of graphene or graphene oxide at a heat treatment temperature of 55-3200 degrees C for a desired length of time to produce a porous graphitic film having pores and constituent graphene sheets or a three dimensional network of graphene pore walls having an inter-planar spacing (d(002)) of less than 0.4 nm, and (e) impregnating the porous graphitic film with a conductor material that bonds the constituent graphene sheets or graphene pore walls to form the highly conducting film having a continuous network of electron-conducting and phonon-conducting pathways. An INDEPENDENT CLAIM is also included for the highly conducting film of conductor-bonded oriented graphene sheets produced by the process.