55 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 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.

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.

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.

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.

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.

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.

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.

Provided is a method of producing a catalyst-bearing support that produces a catalyst-bearing support used in production of a fibrous carbon nanostructure. The production method includes: a stirring step of rotating an approximately circular tube-shaped rotary drum around a central axis so as to stir a particulate support; a spraying step of spraying a catalyst solution against the particulate support inside of the rotary drum; and a drying step causing a drying gas to flow to inside of the rotary drum from outside of the rotary drum so as to dry catalyst solution attached to the particulate support. In this production method, at least part of an implementation period of the stirring step and at least part of an implementation period of the spraying step overlap with each other.

The present invention is a thermoplastic resin composition obtained by melt-kneading at least 0.1 to 0.5 parts by mass of a carbon nanostructure in 100 parts by mass of a thermoplastic resin; a member formed by molding the thermoplastic resin composition; a method for manufacturing a member, which includes a step of preparing the thermoplastic resin composition and a step of molding the thermoplastic resin composition into a prescribed shape; and a method for improving the mechanical strength of a member composed of a thermoplastic resin composition obtained by melt-kneading 0.1 to 0.5 parts by mass of a carbon nanostructure in 100 parts by mass of a thermoplastic resin.

To provide a novel class of composite materials incorporating unimpregnated cellular carbons with templated cavity morphology.SOLUTION: There is provided a composite comprising a binder and nanostructured carbons, wherein the binder comprises one or more of polymeric, metallic, or ceramic, or pyrolytic carbon binder and the nanostructured carbon has 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.SELECTED DRAWING: Figure 2C

A method of producing an agricultural testing sensor electrode, using a first laser beam configured to irradiate an encapsulated, sub-surface region of a carbon pre-cursor material below a surface of the carbon pre-cursor material, the first laser beam creating carbon foam in that encapsulated, sub-surface region and a carbon-based material above the carbon foam; and using a second laser beam configured to remove or ablate the carbon-based material sitting above the carbon foam, the second laser beam exposing or altering some of the carbon foam, to produce a resultant carbon foam material; and adding a receptor or recognition element specific to a target or analyte to the resultant carbon foam material or a linker that is attached to the resultant carbon foam material; providing the carbon foam material for use as a sensor electrode in an assay device, e.g., an electrochemical assay device, for agricultural testing.

Electromagnetic interference (EMI) absorbers comprising a carbon nanostructure (CNS) filler within a liquid crystalline polymer (LCP) matrix, and compositions are disclosed. In an exemplary embodiment, an electromagnetic interference (EMI) absorbent includes a carbon nanostructure filler within a matrix. The matrix includes a liquid crystal polymer. And the EMI absorber includes at least about 0.1 wt% but not more than about 5 wt% of a carbon nanostructure filler within the matrix.

The application 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) groove formation through pretreatment of a substrate surface; b) carbon source gas is introduced, and carbon nanoparticles are grown through first chemical vapor deposition under the action of a metal salt catalyst, so that the transition layer deposition substrate is obtained through deposition on the pretreated substrate in step a); and c) a tantalum source is gasified, mixed with carbon source gas, reaction gas and carrier gas, and subjected to second chemical vapor deposition, so that a fine-grained particle layer is filled and formed in the transition layer deposition substrate, then a coarse-grained particle layer is continuously deposited on the surface of the transition layer deposition substrate, and finally a TaC composite coating is obtained. The method can increase the compactness of the coating, enhance the bonding strength between the coating and the substrate, improve the performance of the TaC composite coating, and prolong the service life and reliability of the TaC composite coating.

The present disclosure relates to an electrode and a rechargeable lithium battery including the same, and a method of manufacturing an electrode for a rechargeable lithium battery. An electrode for a rechargeable lithium battery includes: 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 a carbon nanostructure and a binding polymer bonded to a surface of the carbon nanostructure.

The present disclosure relates to an electrode for a rechargeable lithium battery, a rechargeable lithium battery including the electrode, and a method for manufacturing the electrode. The electrode includes: 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 and a first composite conductive material. The second active material layer includes a second active material and a second composite conductive material. The first composite conductive material includes a first carbon nanostructure and a first polymer chemically bonded to a surface of the first carbon nanostructure. The second composite conductive material includes a second carbon nanostructure and a second polymer chemically bonded to a surface of the second carbon nanostructure.