A novel method of making a 3D-shaped 3D graphene (3D.sup.2G) is disclosed. The method involves a) 3D printing a catalyst slurry via Direct Ink Writing (DIW); b) depositing the printed slurry using chemical vapor deposition (CVD) to produce a nickel-graphene composite; and c) etching the nickel-graphene composite. The resulting composite is a porous, binder-free structure of pure 3D.sup.2G. In one embodiment, the catalyst slurry comprises nickel particles mixed with an organic solvent, a polymer, and a plasticizer. In another embodiment, the organic solvent is dichloromethane, the polymer is poly lactic-co-glycolic acid and the plasticizer is dibutyl phthalate.

A process for producing a highly oriented graphene film, comprising: (a) preparing a pristine graphene dispersion having oxygen-free pristine graphene sheets dispersed in a fluid medium; (b) dispensing and depositing the dispersion onto a supporting substrate to form a layer of oriented pristine graphene, including subjecting the pristine graphene dispersion to an orientation-inducing stress; (c) removing the fluid medium to form a dried layer of pristine graphene; (d) stacking at least two layers of dried pristine graphene to form a mass of multiple layers of dried pristine graphene; and (e) heat treating the mass of multiple layers of dried pristine graphene at a first heat treatment temperature higher than 2,000 C. under a compressive stress for a sufficient period of time to produce the highly oriented graphene film.

Embodiments of the invention relate generally to graphene fibers and, more particularly, to graphene fibers comprising intercalated large-sized graphene oxide (LGGO)/graphene sheets and small-sized graphene oxide (SMGO)/graphene sheets having high thermal and electrical conductivities and high mechanical strength. In one embodiment, the invention provides a graphene fiber comprising: a plurality of intercalated graphene sheets including: a plurality of large-sized graphene sheets; and a plurality of small-sized graphene sheets, wherein at least one of the plurality of small-sized graphene sheets is disposed between at least two of the plurality of large-sized graphene sheets.

The present invention relates to a carbon composite material and a method for producing the same, and more particularly, to a carbon composite material capable of improving electrostatic dispersibility and flame retardancy, and a method for producing the same. The carbon composite material according to the present invention can be effectively applied to products requiring conductivity and flame retardancy.

Disclosed are a porous graphene member having through-holes formed therein, a method for manufacturing the porous graphene member, and an apparatus for manufacturing the porous graphene member using the method. The method comprises: introducing a carbon source and a substitution reaction source into a deposition furnace; thermally decomposing the carbon source and the substitution reaction source simultaneously to generate carbon atoms and substitution atoms, respectively, wherein the carbon atoms are deposited on a substrate present within the deposition furnace to form a graphene film consisting of a monoatomic layer structure, and during the deposition of carbon atoms, the substitution atoms not only interfere with covalent bonds between the carbon atoms to cause crystal defects, but also substitute for parts of the carbon atoms to in situ form through-holes in the graphene, thereby creating the porous graphene member; and releasing the porous graphene member from the substrate.

A wrap configured to cover a surface of a casing surrounding a rotating member includes one or more graphene sheets and a matrix configured to stabilize the one or more graphene sheets. The matrix further configured to receive an adhesive or mechanical fastener and to bond to a surface of the casing using the adhesive or mechanical fastener. The wrap is further configured to facilitate heat transfer over the casing, to structurally reinforce the casing, and to enhance containment resilience.

Disclosed are a porous graphene member having through-holes formed therein, a method for manufacturing the porous graphene member, and an apparatus for manufacturing the porous graphene member using the method. The method comprises: introducing a carbon source and a substitution reaction source into a deposition furnace; thermally decomposing the carbon source and the substitution reaction source simultaneously to generate carbon atoms and substitution atoms, respectively, wherein the carbon atoms are deposited on a substrate present within the deposition furnace to form a graphene film consisting of a monoatomic layer structure, and during the deposition of carbon atoms, the substitution atoms not only interfere with covalent bonds between the carbon atoms to cause crystal defects, but also substitute for parts of the carbon atoms to in situ form through-holes in the graphene, thereby creating the porous graphene member; and releasing the porous graphene member from the substrate.

Gas sensors having laser-induced graphene (LIG) and/or LIG composites, and methods of making and using gas sensors having LIG and/or LIG composites.

A process for producing a highly oriented graphene film (HOGF), comprising: (a) preparing a graphene oxide (GO) dispersion having GO sheets dispersed in a fluid medium; (b) dispensing and depositing the dispersion onto a surface of a supporting substrate to form a layer of GO, wherein the dispensing and depositing procedure includes subjecting the dispersion to an orientation-inducing stress; (c) removing the fluid medium to form a dried layer of GO having an inter-plane spacing d.sub.002 of 0.4 nm to 1.2 nm; (d) slicing the dried layer of GO into multiple pieces of dried GO and stacking at least two pieces of dried GO to form a mass of multiple pieces of GO; and (f) heat treating the mass under an optional first compressive stress to produce the HOGF at a first heat treatment temperature higher than 100 C. to an extent that an inter-plane spacing d.sub.002 is decreased to a value less than 0.4 nm.

A technique that enables production of pellicle membranes that are better resistant to breakage when subjected to force exerted thereon in the thickness direction thereof and that have high transmittance to light. A pellicle membrane of the present invention includes a plurality of laminated layers, where at least one of the layers is provided with at least one hole having a width or diameter of 10 nm to 500 nm.