C01B32/15

Nanofiber fabric
11549205 · 2023-01-10 · ·

A fabric of nanofibers that includes an adhesive is described. The nanofibers can be twisted or both twisted and coiled prior to formation into a fabric. The adhesive can be selectively applied to or infiltrated within portions of the nanofibers comprising the nanofiber fabric. The adhesive enables connection of the nanofiber fabric to an underlying substrate, even in cases in which the underlying substrate has a three-dimensional topography, while the selective location of the adhesive on the fabric limits the contact area between the adhesive and the nanofibers of the nanofiber fabric. This limited contact area can help preserve the beneficial properties of the nanofibers (e.g., thermal conductivity, electrical conductivity, infra-red (IR) radiation transparency) that otherwise might be degraded by the presence of adhesive.

SYSTEM AND METHOD FOR SYNTHESIS OF GRAPHENE QUANTUM DOTS
20230212015 · 2023-07-06 ·

The embodiments herein provide a system and a method for the synthesis of Graphene Quantum Dots (GQDs) for use in applications like nano-electronics, photonics, bio-imaging, energy storage, quantum computing, etc. Cu substrate is placed inside the CVD tube, and the CVD Chamber is sealed. The process parameters for CVD process are set up. Precursor gases injected inside the tube are dissociated to form carbon dimers and trimmers. Upon cooling semi-crystalline carbon film deposits inside the CVD tube. Oxidizing gas mixture is injected to convert amorphous C in semi-crystalline carbon film to CO.sub.2/CO. Graphene Quantum Dots (GQDs) so formed are carried with the gas flow and deposited at the cooler end of tube. The scrapper assembly is inserted in the CVD Tube and the reagent is sprayed inside the tube to disperse these GQDs in the reagent. This dispersion is pumped out of the CVD Chamber.

Process of controlling the morphology of graphite
11691126 · 2023-07-04 · ·

A process of controlling the morphology of graphite in a process for the production of graphite, the process comprising: contacting at elevated temperature, a metal-containing catalyst with a hydrocarbon gas to catalytically convert at least a portion of the hydrocarbon gas to hydrogen and carbon; wherein the temperature is between 600° C. and 1000° C. and a pressure between 0 bar(g) and 100 bar(g), and wherein both the temperature and the pressure are set within predetermined value ranges to selectively synthesise graphitic material with a desired morphology.

Process of controlling the morphology of graphite
11691126 · 2023-07-04 · ·

A process of controlling the morphology of graphite in a process for the production of graphite, the process comprising: contacting at elevated temperature, a metal-containing catalyst with a hydrocarbon gas to catalytically convert at least a portion of the hydrocarbon gas to hydrogen and carbon; wherein the temperature is between 600° C. and 1000° C. and a pressure between 0 bar(g) and 100 bar(g), and wherein both the temperature and the pressure are set within predetermined value ranges to selectively synthesise graphitic material with a desired morphology.

Sulfur-carbon composite, preparation method thereof, and lithium secondary battery comprising same

A sulfur-carbon composite including porous carbon material, and sulfur, wherein at least a portion of an inside and a surface of the porous carbon material coated with the sulfur, the sulfur-carbon composite has a pore volume of 0.180 cm.sup.3/g to 0.300 cm.sup.3/g, and the sulfur-carbon composite has an average pore size of 40.0 nm to 70.0 nm, and a method of manufacturing the same. Also, a method of manufacturing a sulfur-carbon composite, which includes (a) mixing a porous carbon material with sulfur particles, wherein the sulfur particles have a particle size of 1 nm to 1 μm using a Henschel mixer; and (b) drying the resulting mixture of (a).

Methods and systems for production of doped carbon nanomaterials
11542609 · 2023-01-03 · ·

A system and process for producing doped carbon nanomaterials is disclosed. A carbonate electrolyte including a doping component is provided during the electrolysis between an anode and a cathode immersed in carbonate electrolyte contained in a cell. The carbonate electrolyte is heated to a molten state. An electrical current is applied to the anode, and cathode, to the molten carbonate electrolyte disposed between the anode and cathode. A morphology element maximizes carbon nanotubes, versus graphene versus carbon nano-onion versus hollow carbon nano-sphere nanomaterial product. The resulting carbon nanomaterial growth is collected from the cathode of the cell.

Methods and systems for production of doped carbon nanomaterials
11542609 · 2023-01-03 · ·

A system and process for producing doped carbon nanomaterials is disclosed. A carbonate electrolyte including a doping component is provided during the electrolysis between an anode and a cathode immersed in carbonate electrolyte contained in a cell. The carbonate electrolyte is heated to a molten state. An electrical current is applied to the anode, and cathode, to the molten carbonate electrolyte disposed between the anode and cathode. A morphology element maximizes carbon nanotubes, versus graphene versus carbon nano-onion versus hollow carbon nano-sphere nanomaterial product. The resulting carbon nanomaterial growth is collected from the cathode of the cell.

Carbon nanotube hybrid material fabric, composite fabric, and personal protective apparel and equipment

Carbon nanotube (CNT) fiber and sheets formed by a specialized gas assembly pyrolytic reactor method that permits gas phase integration of nano and micro particles (NMPs) are processed into yarn and fabric used in the manufacture of personal protective clothing and equipment that can be tailored via selection of NMPs for a wide variety of functionality depending on target application. The CNT-NMP hybrid fabrics may be designed to exhibit enhanced electrical and thermal conductivity, moisture wicking, air filtering, and environmental sensing properties.

CROSS-LINKED AND RECYCLABLE ELECTROCONDUCTIVE CARBONACEOUS NANOCOMPOUNDS AND POLYMERS CAPABLE OF DISPERSING AND STABILISING THEM, METHOD, DERIVED MATERIALS AND USES

The present invention relates to cross-linked and recyclable nanocompounds obtained by in situ terminal treatment of raw carbonaceous materials, including charcoal, tar, activated carbon, pyrolytic carbon, coke, graphite or others having conductive structures, including graphite, graphene, different carbon nanotubes, fullerenes or a combination thereof or their derivatives, and a polymer capable of dispersing and reversibly stabilising said components, having viscous or fluid behaviour below 200° C., and may have pendant groups acting as diene or dienophile, including furan-functionalised aliphatic polyketones, furan-functionalised polyesters, ethylene rubber with propylene functionalised with furan groups or a combination thereof. Derived materials, method of obtainment and their uses as a thermostable, thermoreversible, thermoadhesive, thermoconductive, electroconductive, self-repairing additive or matrix capable of converting electricity into heat or a combination thereof and in self-assembling or self-repairing, thermoconductive, electroconductive materials capable of converting electricity into heat or a combination thereof.

CROSS-LINKED AND RECYCLABLE ELECTROCONDUCTIVE CARBONACEOUS NANOCOMPOUNDS AND POLYMERS CAPABLE OF DISPERSING AND STABILISING THEM, METHOD, DERIVED MATERIALS AND USES

The present invention relates to cross-linked and recyclable nanocompounds obtained by in situ terminal treatment of raw carbonaceous materials, including charcoal, tar, activated carbon, pyrolytic carbon, coke, graphite or others having conductive structures, including graphite, graphene, different carbon nanotubes, fullerenes or a combination thereof or their derivatives, and a polymer capable of dispersing and reversibly stabilising said components, having viscous or fluid behaviour below 200° C., and may have pendant groups acting as diene or dienophile, including furan-functionalised aliphatic polyketones, furan-functionalised polyesters, ethylene rubber with propylene functionalised with furan groups or a combination thereof. Derived materials, method of obtainment and their uses as a thermostable, thermoreversible, thermoadhesive, thermoconductive, electroconductive, self-repairing additive or matrix capable of converting electricity into heat or a combination thereof and in self-assembling or self-repairing, thermoconductive, electroconductive materials capable of converting electricity into heat or a combination thereof.