78 results about "Carbon nanostructures" patented technology

A composite, comprising a binder, the binder comprising one or more of polymeric, metallic, or ceramic, or pyrolytic carbon binder and a nanostructured carbon having a cellular structure. The cellular structure comprises one or more cell walls having a structure formed by a template and one or more cavities. Each cavity is substantially enclosed by the one or more cell walls and substantially unimpregnated by a liquid or solid.

The invention relates to the technical field of semiconductor material preparation, and provides a TaC composite coating process based on a carbon nanostructure transition layer and a product thereof. The method comprises the following steps: a) pretreating the surface of a base material to form a groove, b) introducing a carbon source gas, carrying out first chemical vapor deposition under the action of a metal salt catalyst to grow carbon nanoparticles, and depositing the base material pretreated in the step a) to obtain a transition layer deposition base material, c) gasifying a tantalum source, mixing the gasified tantalum source with the carbon source gas, a reaction gas and a carrier gas, and carrying out second chemical vapor deposition to obtain the transition layer deposition base material. And second chemical vapor deposition is conducted, the transition layer deposition base material is filled with the fine grain particle layer, then deposition continues to be conducted on the surface of the transition layer deposition base material to form the coarse grain particle layer, and finally the TaC composite coating is obtained. According to the method, the compactness of the coating can be improved, the bonding strength of the coating and the base material is enhanced, the performance of the TaC composite coating is improved, the service life of the TaC composite coating is prolonged, and the reliability of the TaC composite coating is improved.

The present invention relates to a medical device manufactured using the additive manufacturing process (3D printing). It is a medical device used preferably as a bone graft composed of a porous structure based on bioceramics based on β-tricalcium phosphate (β-TCP) or hydroxyapatite, which may or not contain nanostructures in its composition, for example: carbon nanostructures (graphene, graphene oxide, reduced graphene oxide, carbon nanotubes, etc.) and, in preferred embodiments, stem cells and polymeric membrane. Also, the present invention relates to the use of this device as a bone graft and the process of preparing this device.

FIELD OF THE INVENTION The present invention relates to a conductive agent, an electrode for a lithium battery, and a method for producing the conductive agent. The conductive agent comprises a dry mixture, preferably a freeze-dried mixture, of carbon nanostructures and carbon black.

The invention provides a composite silicon-carbon negative electrode material and a preparation method thereof, a negative electrode plate and a battery. The composite silicon-carbon negative electrode material comprises a silicon-carbon composite core, and a gradient pore carbon buffer layer and a dynamic self-healing binder layer which sequentially coat the surface of the silicon-carbon composite core, a branched carbon nanostructure grows in the pore wall of the gradient pore carbon buffer layer, the dynamic self-healing binder layer partially permeates into the pores of the gradient pore carbon buffer layer, the dynamic self-healing binder layer contains dynamic disulfide bonds, and the dynamic self-healing binder layer comprises a composite binder and a conductive high-molecular polymer. According to the invention, the gradient pore buffer layer is arranged on the surface of the silicon-carbon particles, and meanwhile, the self-healing binder containing dynamic disulfide bonds is used for permeation filling, so that three-dimensional cooperative regulation and control of graded dissipation of expansion stress, self-repairing of microcracks and ion / electron dual-path conduction are realized; the three core problems of electrode pulverization caused by volume expansion, interface impedance sharp increase and long circulation capacity attenuation are thoroughly solved.

The invention relates to the technical field of bridge and tunnel paving materials, in particular to an anti-rutting epoxy asphalt modifier and a using method thereof.The anti-rutting epoxy asphalt modifier is prepared from, by mass, 13-27 parts of a component A and 12.1-27 parts of a component B; the component A comprises the following components in parts by mass: 10-20 parts of epoxy resin; 2-4 parts of a reactive diluent; 1-3 parts of a composite bifunctional compatilizer; the component B comprises the following components in parts by mass: 10-20 parts of a curing agent; 2-4 parts of an accelerant; 0.1-3 parts of a functionalized carbon nanomaterial; a carbon nanomaterial is subjected to amino silane functional modification, so that the adaptability among epoxy, asphalt and aggregate is improved, the carbon nanomaterial and the asphalt are premixed to form an asphalt-carbon nanoskeleton structure, and the compatibility between the epoxy and the asphalt is improved by utilizing a composite bifunctional compatilizer; finally, the epoxy, the asphalt and the aggregate are tightly bonded through physical blending and chemical bonding, so that the anti-rutting performance is greatly improved.

Electrodes and rechargeable lithium batteries including the electrodes are disclosed. The electrode may include an electrode current collector and a multi-layered active material layer thereon. The multi-layered active material layer may include first to third active material layers sequentially stacked on the electrode current collector. The first active material layer may include a first active material. The second active material layer may include a second active material and a first composite conductive material. The third active material layer may include a third active material and a second composite conductive material. The first composite conductive material may include a first carbon nanostructure and a first polymer. The second composite conductive material may include a second carbon nanostructure and a second polymer. The first polymer and the second polymer may be different from each other. The first polymer may have higher ionic conductivity than the second polymer.

A structure including a coated free-standing film attached to a support wherein the free-standing film is a free-standing film of carbon nanostructures and a parylene-coating having a thickness of 5-200 nm is provided on the free-standing film.

The present invention relates to a conductive agent, an electrode for a lithium battery, and a method for producing the conductive agent. The conductive agent comprises a dried, preferably freeze-dried, mixture of a carbon nanostructure and a carbon black.

Disclosed is a carbon fiber precursor treatment agent that contains a carbon nanostructure and a surfactant. The carbon nanostructure is present in the nonvolatile matter of the carbon fiber precursor treatment agent at a content of 10 ppm or more and less than 50,000 ppm.

Disclosed herein are methods of electrochemically producing halogen using an oxygen consuming gas diffusion electrode, referred to herein as an oxygen depolarized cathode (ODC). The electrode can include heteroatom-doped carbon nanostructures as catalysts for both halogen evolving anodes and oxygen depolarized cathodes. Examples of halogens that can be produced include chlorine and bromine by oxidation of the respective halide ions.

A method of manufacturing a carbon nanostructure, such as a carbon foam material, is disclosed. The method comprises the steps of: (a) using a first laser beam to irradiate an encapsulated or sub-surface region of a carbon pre-cursor material below a surface of the material, to create carbon foam in that sub-surface region, and a disorganised, amorphous non-graphene material above the carbon foam, and then (b) using a second laser beam to remove or ablate the disorganised, amorphous non-graphene material sitting above the carbon foam, to expose at least some of the carbon foam. The resultant carbon foam material shows a significant D peak; the 2D peak is significantly less than the G peak; and the peak D:peak G ratio is significantly above zero. In appearance and Raman signature, it appears similar to a carbon nano-onion material. It can be used in biosensors, supercapacitors and pseudo-capacitors.

The application provides a graphite processing method for blocking molten salt and molten metal infiltration, comprising the following steps: S1: providing a thermosetting resin monomer or oligomer solution, adding a small amount of catalyst to the solution to form a precursor, and immersing the precursor into graphite pores; S2: converting the precursor immersed in the graphite pores into organic nanostructures through solidification and drying; and S3: carbonizing the organic nanostructures in the graphite pores at a temperature higher than 500 DEG C to form carbon nanostructures, so that a graphite capable of blocking molten salt and molten metal infiltration is obtained. The processing method provided by the application has the advantages of simple process, difficulty in failure, and no change in the performance of the base material, compared with the traditional surface coating, resin and other impregnation methods, and has obvious advantages over other processing methods when used for processing the graphite in a molten salt core, and has little influence on the mechanical, thermal and radiation behaviors of the graphite, so that the cost caused by the reevaluation of the graphite material can be saved or reduced.

The present invention relates to a conductive agent composition, a conductive agent dispersion comprising the conductive agent composition, a method for preparing the conductive agent dispersion, the use of the conductive agent composition or the conductive agent dispersion in manufacturing an electrode, and an electrode. The conductive agent composition comprises carbon black and at least one material selected from the following materials: a carbon nanostructure, fragments of a carbon nanostructure, and fragmented multi-walled carbon nanotubes.

An electrode, a method of manufacturing the electrode, and a rechargeable lithium battery including the electrode are disclosed. The electrode can include an electrode current collector and a multi-layered active material layer thereon. The multi-layered active material layer can include first to third active material layers sequentially stacked on the electrode current collector. The first active material layer can include a first active material. The second active material layer can include a second active material and a first composite conductive material. The third active material layer can include a third active material and a second composite conductive material. The first composite conductive material can include a first carbon nanostructure and a first polymer. The second composite conductive material can include a second carbon nanostructure and a second polymer. The first polymer and the second polymer can be different from each other. The first polymer can have a higher ionic conductivity than the second polymer.

Polymer composite with an electrical volume conductivity between 10 -7 S / cm and 1 S / cm, consisting of or containing • a preferably thermoplastic polymer, • Carbon fibers and • Carbon nanostructures.

Examples provide a method for manufacturing electrically conductive rubber matting. The method includes charging, into an internal mixer, a set of ingredients for forming a rubber compound. The set of ingredients include 63.2 weight percent (wt%) to 73.2 wt% nitrile rubber, 25.0 wt% to 35.0 wt% polyvinyl chloride (PVC) plastic, 0.02 wt% to 1.0 wt% PVC stabilizer, and 0.8 wt% to 2.6 wt% carbon nanostructures not including carbon black. The ingredients are mixed at a first speed at least until a measured temperature in the internal mixer reaches a first threshold temperature. The ingredients are mixed at a second speed that is greater than the first speed at least until the measured temperature in the internal mixer reaches a second threshold temperature that is greater than the first threshold temperature. After mixing, the rubber compound is discharged the rubber compound from the internal mixer and shaped.

The present invention provides a method for preparation of porous hard-carbon nanostructures and applications thereof. Particularly, the present invention provides a the method for preparation of porous nano-carbon florets (NCF) comprising chemical vapour deposition of a carbon source on a silica-based template followed by removal of silica via alkali-mediated etching and spray coating of NCF over desired substrates. The resulting nano-carbon florets (NCF) finds application in light-heat conversion such as use of NCF in solar-thermal conversion for generating temperature in dry state as well as for evaporating water; use of NCF in solar-thermal conversion for bacteriocidal disinfection of water. The NCF of the present invention may also be utilized for heavy metal scavenging and wastewater remediation.

The present disclosure relates to a negative electrode slurry, a method of manufacturing the negative electrode slurry, and a negative electrode manufactured using the negative electrode slurry. The negative electrode slurry includes a first negative electrode active material including a silicon composite and a second negative electrode active material including a carbon-based material. The silicon composite includes a silicon-based active material and a one-dimensional carbon nanostructure. The one-dimensional carbon nanostructures are fixed on the surface of the silicon-based active material in a dispersed form. The second negative electrode active material is a carbon-based material different from the one-dimensional carbon nanostructure.

The invention relates to an electrical energy storage system (1) for an aircraft comprising: - at least one electrical energy storage structure (2) comprising a plurality of electrical energy storage cells (3), - a composite structure (10) interposed between and / or surrounding the storage cells, the composite structure forming a stack (11) comprising, along a stacking axis (Z), an outer layer (12) and an inner layer (13), said outer and inner layers being thermally conductive, and a plurality of electrically insulating layers (14) interposed between the outer and inner layers, characterized in that the stack comprises a thermal runaway protection structure (20) comprising at least one protective layer (21) based on carbon fibers comprising at least one layer (22) of carbon nanostructures (CN) oriented along a stacking axis direction,where each protective layer is interposed between two successive layers and / or between one of the electrically insulating layers and the outer layer and / or between one of the electrically insulating layers and the inner layer. Figure for the abbreviation: Figure 2,

The invention discloses a negative active material, a negative pole piece containing the negative active material and an electrochemical device, and belongs to the technical field of electrochemical energy storage. The negative electrode active material provided by the invention comprises a graphite inner core, a carbon coating layer is arranged on at least part of the surface of the graphite inner core, meanwhile, a one-dimensional carbon nanostructure is arranged on the surface of the graphite inner core, and the graphite inner core is further limited to comprise needle-shaped particles; the obtained negative electrode active material has high gram volume, and when the negative electrode active material is applied to a subsequent electrochemical device, the obtained electrochemical device has high energy density and first coulombic efficiency, and also has good rate capability and low DC internal resistance.

The invention discloses a high-conductivity and high-heat-conductivity polypropylene composite material and a preparation method thereof. The high-conductivity and high-thermal-conductivity polypropylene composite material is prepared from the following raw materials in percentage by weight: 40 to 80 percent of polypropylene resin (PP), 1 to 10 percent of carbon nanostructure material CNS, 5 to 40 percent of boron nitride, 5 to 40 percent of magnesium oxide, 0.1 to 30 percent of talcum powder, 0.5 to 10 percent of compatilizer, 0.1 to 5 percent of silane coupling agent, 0.1 to 15 percent of flexibilizer, 0.1 to 5 percent of antioxidant and 0 to 2 percent of other auxiliaries. The high-conductivity and high-thermal-conductivity polypropylene composite material disclosed by the invention has relatively high mechanical properties, excellent conductivity, relatively high thermal conductivity and excellent injection molding performance, and can be widely applied to the fields of automobile industry, electronic appliances and electronic packaging.

A polyacetal resin composition containing (A) a polyacetal resin 100 parts by mass, (B) an antioxidant 0.1 to 1.0 parts by mass, (C) at least one of magnesium oxide and zinc oxide 0.3 to 2.0 parts by mass, (D) a polyalkylene glycol 0.5 to 3.0 parts by mass, (E) a fatty acid ester of a polyol having an esterification rate of 80% or more 0.01 to 1.0 parts by mass, and (F) a carbon-based conductive additive 0.3 to 2.5 parts by mass, the (F) carbon-based conductive additive being selected from one of a combination of only (F1) a carbon nanostructure, and (F1) a carbon nanostructure and (F2) a carbon black having a BET specific surface area of 300 m 2 / g or more.

A method for producing a functionalized carbon nanostructure film is disclosed. The method comprises:-providing an electrode comprising a carbon nanostructured membrane attached to a support,-subjecting the electrode to an electrical grafting process in a bath containing water and at least one diazo compound,-subjecting the electrode to an electrical grafting process using electrical potential pulses wherein each electrical potential pulse consists of an on-time during which an electrical potential is applied from 0.01 to 0.1 s and an off-time during which an electrical potential is applied from 0.01 to 0.1 s, and-subjecting the electrode to a process for removing the diazo compound from the electrode. And in the turn-off time, applying a zero potential for 0.01-0.1 s to form anchoring points on the surface of the carbon nanostructure. Further, the present invention discloses a functionalized carbon nanostructure membrane. Further, the use of the film for forming a sensor, a filter, an electron blocking window and / or a photomask protective film or the use of a method for forming a sensor, a filter, an electron blocking window and / or a photomask protective film is disclosed.

To provide electrodes with improved capacitance characteristics and lifespan characteristics. [Solution] The present invention relates to an electrode and a lithium secondary battery including the same, and more particularly to an electrode current collector, a first active material layer on the electrode current collector, and a second active material layer on the first active material layer. The first active material layer includes a first active material, a binder, and a conductive material. The second active material layer includes a second active material and a composite conductive material. The composite conductive material includes carbon nanostructures and adhesive polymers physically or chemically bonded to the surface of the carbon nanostructures.

A method of producing an animal health diagnostics biosensor electrode, comprising (a) using a first laser beam to irradiate a sub-surface region of a carbon pre-cursor material below a surface of the carbon pre-cursor material, parameters of the first laser beam creating carbon foam in that sub-surface region and a carbon-based material above the carbon foam; (b) using a second laser beam to remove or ablate the carbon-based material sitting above the carbon foam, parameters of the second laser beam exposing / altering some of the carbon foam, to produce a resultant carbon foam material; (c) functionalizing the resultant carbon foam material by adding a receptor / biorecognition element to a target or analyte to the resultant carbon foam material or a linker that is attached to the resultant carbon foam material; (d) providing the functionalized carbon foam material as a biosensor electrode configured for animal health diagnostics.

The invention discloses a high-conductivity and high-heat-conductivity PBT (polybutylene terephthalate) composite material and a preparation method thereof. The high-conductivity and high-heat-conductivity PBT composite material is prepared from the following raw materials in percentage by weight: 40 to 85 percent of polybutylene terephthalate (PBT) resin, 1 to 10 percent of carbon nanostructure material CNS, 5 to 40 percent of boron nitride, 5 to 40 percent of aluminum oxide, 0.1 to 5 percent of silane coupling agent, 0.1 to 10 percent of dispersing aid, 1 to 15 percent of toughening agent, 0.1 to 5 percent of antioxidant and 0 to 2 percent of other aids. The high-conductivity and high-thermal-conductivity PBT composite material disclosed by the invention has good mechanical properties, excellent electrical conductivity, relatively high thermal conductivity and good injection molding performance, and can be widely applied to the automobile industry and the electronic and electric appliance industry.

The present invention relates to a medical device manufactured using the additive manufacturing process (3D printing). It is a medical device used preferably as a bone graft composed of a porous structure based on bioceramics based on β-tricalcium phosphate (β-TCP) or hydroxyapatite, which may or not contain nanostructures in its composition, for example: carbon nanostructures (graphene, graphene oxide, reduced graphene oxide, carbon nanotubes, etc.) and, in preferred embodiments, stem cells and polymeric membrane. Also, the present invention relates to the use of this device as a bone graft and the process of preparing this device.

The invention provides a foaming cable copper conductor filled with a carbon nanostructure and a preparation method of the foaming cable copper conductor, and belongs to the technical field of cable conductor processing, according to the foaming cable copper conductor filled with the carbon nanostructure and the preparation method of the foaming cable copper conductor, pores are formed in a copper matrix, the porosity is 15%-25%, and the pores are of a honeycomb-shaped interconnection structure; according to the preparation method, the copper conductor is provided with pores, carbon nanomaterial tension layers are inserted into the pores, carbon nanomaterial growth layers are inserted into the pores, a porous structure is generated in the copper conductor, and carbon nanomaterials are formed in the porous structure, so that the skin effect loss of a pure conductor under high-frequency current is reduced, and the conductivity is improved.

A solvent-free process employs carbon nanostructures to prepare compositions and electrodes for lithium-ion batteries. The carbon nanostructures can be multifunctional, providing two or more desirable characteristics, acting, for example, as a conductive carbon additive, as a fibrillizing agent and / or as a mechanical reinforcement. In one example, an electroactive material, a binder, e.g., PTFE, and carbon nanostructures are combined in one or more steps. High shear mixing is used to process the binder in the presence of the carbon nanostructures. In some implementations, the carbon nanostructures are provided in combination with a carbon black and / or with carbon nanotubes. Some anode compositions can be prepared by processing the binder in the presence of a composite that contains the carbon nanostructures and an active anode material. Generally, the binder is processed in the absence of solvent. The resulting composition can be formed into a film which can be applied onto a suitable substrate to form an electrode.