▎ 摘　　要

NOVELTY - A bulk highly oriented graphene structure producing method involves preparing either a graphene oxide dispersion having graphene oxide sheets dispersed in a fluid medium or a graphene oxide gel having graphene oxide molecules dissolved in a fluid medium. The graphene oxide dispersion or graphene oxide gel is dispensed and deposited onto a surface of a supporting substrate to form a first layer of graphene oxide, followed by partially or completely removing the fluid medium from the first layer of graphene oxide to form a first dried layer of graphene oxide. USE - Method for producing a bulk highly oriented graphene structure that is utilized in thermal management device (claimed) such as heat dissipation plate for use in a microelectronic device, LED lighting device, and photovoltaic energy device. ADVANTAGE - The method enables producing the bulk highly oriented graphene structure with high thermal conductivity, high electrical conductivity, high mechanical strength, high elastic modulus and high tensile strength. DETAILED DESCRIPTION - A bulk highly oriented graphene structure producing method involves preparing either a graphene oxide dispersion having graphene oxide sheets dispersed in a fluid medium or a graphene oxide gel having graphene oxide molecules dissolved in a fluid medium. The graphene oxide dispersion or graphene oxide gel is dispensed and deposited onto a surface of a supporting substrate to form a first layer of graphene oxide, followed by partially or completely removing the fluid medium from the first layer of graphene oxide to form a first dried layer of graphene oxide having an inter-plane spacing (d002) of 0.4-1.2 nm as determined by X-ray diffraction and an oxygen content of more than 5 wt.%, preparing a second dried layer of graphene oxide by repeating dispensing and depositing process and fluid medium removal step, or preparing multiple sheets of dried graphene oxide by slicing the first dried layer of graphene oxide. The first dried layer of graphene oxide with the second dried layer of graphene oxide or multiple sheets of dried graphene oxide are stacked under an optional first compressive stress to form a mass of multiple layers of graphene oxide. The mass of multiple layers of graphene oxide is heat treated under an optional second compressive stress to produce a highly oriented graphene structure at a first heat treatment temperature of more than 100 degrees C to an extent at where an inter-plane spacing (d002) is decreased to a value less than 0.4 nm and the oxygen content is decreased to less than 5 wt.%, where the graphene oxide sheets or graphene oxide molecules contain an oxygen content of more than 5 wt.%, the thickness of the bulk highly oriented graphene structure is more than 0.1 mm, and the dispensing and depositing process is carried out by subjecting the graphene oxide dispersion or graphene oxide gel to an orientation-inducing stress. INDEPENDENT CLAIMS are also included for the following: (1) a bulk highly oriented graphene structure produced by the process (2) a thermal management device containing the bulk highly oriented graphene structure.