The invention relates to a method for obtaining sheets of graphene, hexagonal boron nitride, molybdenum disulfide, tungsten disulfide or mixtures thereof from the powder of said materials. Said sheets consist of a set of strips, wherein said strips consist of between one and five layers. Said layers are layers of graphene, hexagonal boron nitride, molybdenum disulfide or tungsten disulfide having a monoatomic or monomolecular thickness. The invention also relates to a method for coating a surface with sheets of graphene, hexagonal boron nitride, molybdenum disulfide, tungsten disulfide or sheets of mixtures thereof.

There is provided an industrially scalable system and method for preparing graphene oxide and thereafter reduced graphene oxide, with high yields (generally better than 98 percent), in which the yield and quality are maximized. In certain embodiments of the present method and process, the initial particle size of the graphite charge and the temperature profile are of greater importance to a successful outcome than the reactants themselves. It should be noted that unlike the previous Hummers methods and derivatives, secondary oxidizers and exfoliation agents such as nitric acid, sodium nitrate and similar intercalation agents are not necessary to achieve the desired result.

The present disclosure relates to production of electrodes. The present disclosure particularly relates to production of graphene based transparent conducting electrode (TCE). The disclosure provides a simple and environmental friendly process for producing said graphene based TCE by coating of graphene on a modified or non-modified substrate. Said electrode provides large area metal network with reduced non-uniformity of conducting film, visible transparency and low or reduced sheet resistance. The disclosure further relates to a graphene based transparent conductive electrode (TCE).

This can be a method of making a high strength composite reinforcing fiber using flat GO flakes coated on a conventional reinforcing fiber. This maintains some the flexibility of the fiber and aligns the flat graphene flakes along the surface of the fiber; this dramatically increases the strength of the fiber. It also allows bonding between overlapping flakes, in contrast to flakes being uniformly dispersed in a host material that is being reinforced and dramatically increases the strength of the host material.

Disclosed herein are methods of synthesizing a hybrid nanomaterial comprising 3D out-of-plane single- to few-layer fuzzy graphene on a scaffold, such as a Si nanowire mesh through a plasma-enhanced chemical vapor deposition process. By varying graphene growth conditions (CH4 partial pressure and process time), the size, density, and electrical properties of the hybrid nanomaterial can be controlled. Porous nanowire-templated 3D graphene hybrid nanomaterials exhibit high electrical conductivity and also demonstrate exceptional electrochemical functionality.

The present invention provides a multilayered graphene dispersion capable of instantaneously forming a thin uniform coating film containing multilayered graphene on the surface of a sample, a blackening agent for thermophysical property measurement excellent in a blackening effect, and a mold release agent/lubricant for powder sintering excellent in releasing and lubrication effects. The multilayered graphene dispersion of the present invention is characterized in that multilayered graphene is dispersed in a liquid phase containing an organic solvent and a liquefied gas. The blackening agent for thermophysical property measurement of the present invention is a blackening agent for forming a blackened film on the surface of a sample for thermophysical property measurement, and contains the multilayered graphene dispersion. The mold release agent/lubricant for powder sintering of the present invention is a mold release agent/lubricant for forming a separation layer between a sintering mold and a sintered body in powder sintering, and contains the multilayered graphene dispersion.

Methods of pyrolytically producing carbons comprising graphene sheets at temperatures below 800° C. are disclosed. The graphene sheets, which are not substantially stacked, are formed by templating on hexagonal metal oxides, for example. Extensive stacking of the graphene sheets, which would lead to formation of graphite, is avoided at the low temperatures employed. Also provided are methods of producing heavily nitrogen doped graphene comprising carbons. Methods of using graphene and heavily nitrogen doped graphene are also disclosed.

Compounds having an elastomer material, a filler material, at least one additive material, and at least one accelerant material are disclosed. In various embodiments, the filler material comprises a graphene-based carbon material. In various embodiments, the graphene-based carbon material comprises graphene comprising up to 15 layers, carbon aggregates having a median size from 1 to 50 microns, a surface area of the carbon aggregates at least 50 m.sup.2/g, when measured via a Brunauer-Emmett-Teller (BET) method with nitrogen as the adsorbate, and no seed particles.

Provided is a vehicle heat exchanger including a plurality of tubes through which a fluid flows, a plurality of cooling fins interposed between adjacent tubes, and a graphene material attached to a surface of each tube and/or a surface of each cooling fin. The graphene material may include a first graphene layer and a second graphene layer stacked on the first graphene layer.

Provided is a process for manufacturing a graphene material, the process comprising (a) injecting a rust stock into a first end of a continuous reactor having a toroidal vortex flow, wherein the first stock comprises graphite and a non-oxidizing liquid (or, alternatively, graphite, an acid, and an optional oxidizer) and the continuous flow reactor is configured to produce the toroidal vortex flow, enabling the formation of a reaction product suspension or slurry at the second end, downstream from the first end, of the continuous reactor; and (b) introducing the reaction product suspension/slurry from the second end back to enter the continuous reactor at or near the first end, allowing the reaction product suspension/slurry to form a toroidal vortex flow and move down to or near the second end to produce a graphene suspension or graphene oxide slurry. The process may further comprise repeating step (b) for at least one time.