Abstract: A method of making a fiber tow coating is provided. The method includes providing a fiber tow selected from the group consisting of carbon and silicon; and applying an oxide-based fiber interface coating onto the fiber tow using directed vapor deposition or other like deposition method.

Abstract: The present invention relates to a negative electrode material for a lithium secondary battery, a method for producing same, and a lithium secondary battery comprising same as a negative electrode. The present invention provides a negative electrode material for a lithium secondary battery, the material comprising a complex in which a chemical vapor deposition (CVD) carbon coating film is formed on an amorphous carbon material comprising a silicon material that has been surface treated by a silane coupling agent.

Abstract: A negative active material, a method of preparing the same, and a lithium battery including the negative active material are disclosed. The negative active material includes a silicon-based nanocore and a first amorphous carbonaceous coating layer that is formed of carbonized organic material and that is uniformly and continuously formed on a surface of the silicon-based nanocore, whereby irreversible capacity losses due to volumetric expansion/contraction caused when a lithium battery is charged and discharged are compensated and cycle lifetime characteristics are enhanced.

Abstract: A CBN sintered body contains CBN, a binder phase and inevitable impurities. An amount of CBN by volume is between 50%-80%. A total amount of binder phase and inevitable impurities by volume is between 20%-50%. The binder phase contains an Al compound and a Ti compound. The Al compound contains Al and one or more of N, O and B. The Ti compound contains Ti and one or more of C, N and B. When an X-ray diffraction intensity at a (100) plane of the AlN is I1 and an X-ray diffraction intensity at a (104) plane of the Al2O3 is I2, I1/I2 is between 6 and 40. When a total area of the cubic boron nitride and the Al compound is S1, and an area of a region at which the CBN and the Al compound are continuously contacted is S2, S2/S1 is between 0.98 and 1.00.

Abstract: Provided are: chopped carbon fiber bundles which have high fluidity without decreasing the dispersibility of carbon fibers and the physical properties of a molded product; and a method for producing chopped carbon fiber bundles with high productivity. Chopped carbon fiber bundles, each of which contain a carbon fiber bundle having a total fineness of from 25,000 dtex to 45,000 dtex (inclusive) and a sizing agent in an amount of from 1% by mass to 5% by mass (inclusive) relative to the total mass of the chopped carbon fiber bundle. The length (L) of each chopped carbon fiber bundle along the fiber direction of the carbon fiber bundle is from 1 mm to 50 mm (inclusive); the ratio of the longest diameter (Dmax) to the shortest diameter (Dmin) of a cross section perpendicular to the fiber direction of each chopped carbon fiber bundle, namely Dmax/Dmin is from 6.0 to 18.0 (inclusive); and the orientation parameter of the single fibers present in the surface of each chopped carbon fiber bundle is 4.0 or less.

Abstract: A prepreg includes; sizing agent-coated carbon fibers coated with a sizing agent; and a thermosetting resin composition impregnated into the sizing agent-coated carbon fibers. The sizing agent includes an aliphatic epoxy compound (A) and an aromatic compound (B) at least containing an aromatic epoxy compound (B1). The thermosetting resin composition includes a thermosetting resin (D) and a latent hardener (E), and optionally includes an additive (F) other than the thermosetting resin (D) and the latent hardener (E). The (a)/(b) ratio is within a predetermined range where (a) is the height of a component at a binding energy assigned to CHx, C—C, and C?C and (b) is the height of a component at a binding energy assigned to C—O in a C1s core spectrum of the surfaces of the sizing agent-coated carbon fibers analyzed by X-ray photoelectron spectroscopy.

Abstract: Provided are an anode active material including carbon-based particles, silicon nanowires grown on the carbon-based particles, and a carbon coating layer on surfaces of the carbon-based particles and the silicon nanowires, and a method of preparing the anode active material. Since the anode active material of the present invention is used in a lithium secondary battery, physical bonding force between the carbon-based particles and the silicon nanowires may not only be increased but conductivity may also be improved. Thus, lifetime characteristics of the battery may be improved.

Abstract: There is provided a material for molding including: carbon fiber bundles which are easily impregnated including carbon fibers and at least one impregnation aid in an amount of 3 to 15 parts by mass based on 100 parts by mass of the carbon fibers, the at least one impregnation aid satisfying specific requirements; and a polycarbonate is adhered thereto in an amount of 50 to 2000 parts by mass.

Abstract: There is provided a fiber and method of making a fiber. The fiber has an inner-volume portion having a first outer diameter, a plurality of nanostructures, and one or more first polymers. The nanostructures act as an orientation template for orientation of the one or more first polymers in a direction parallel to a longitudinal axis of the fiber. The fiber has an outer-volume portion having a second outer diameter and one or more second polymers. The outer-volume portion is in contact with and completely encompasses the inner-volume portion. The inner-volume portion has at least one of a tensile modulus and a strength that are higher than at least one of a tensile modulus and a strength of the outer-volume portion.

Abstract: The method of synthesizing carbon nanorods (CNRs) and carbon nanowires (CNWs) involves carbonization of a resorcinol-formaldehyde cross-linked precursor gel. The first stage is the synthesis of resorcinol-formaldehyde cross-linked precursor gel. The second stage is carbonization of the gel by heating the gel in a furnace under the flow of nitrogen gas at 500° C. for three hours. The third stage involves activating the carbon by heating the carbon gel in a furnace under the flow of carbon dioxide gas for one hour at 700° C. to form the CNRs and CNWs.

Abstract: A prepreg includes; agent-coated carbon fibers coated with a sizing agent; and a thermosetting resin composition impregnated into the sizing agent-coated carbon fibers. The sizing agent includes an aliphatic epoxy compound (A) and an aromatic epoxy compound (B1). The sizing agent-coated carbon fibers are in a shape of woven fabric or braid. The thermosetting resin composition includes a thermosetting resin (D), a thermoplastic resin (F), and a latent hardener (G). The sizing agent-coated carbon fibers have an (a)/(b) ratio in a certain range where (a) is the height of a component at a binding energy assigned to CHx, C—C, and C?C and (b) is the height of a component at a binding energy assigned to C—O in a C1s core spectrum of the surfaces of the sizing agent-coated carbon fibers analyzed by X-ray photoelectron spectroscopy.

Abstract: A colorless composite material according to an embodiment includes glass fibers, and inorganic-organic hybrid resin having inorganic bonds and organic bonds, wherein the inorganic bonds are M-O-M bonds and M denotes a metallic element, wherein the metallic element is one of Ti, Zr and Al.

Abstract: A negative active material and a lithium battery including the negative active material. The negative active material includes a non-carbonaceous nanoparticle capable of doping or undoping lithium; and a crystalline carbonaceous nano-sheet, wherein at least one of the non-carbonaceous nanoparticle and the crystalline carbonaceous nano-sheet includes a first amorphous carbonaceous coating layer on its surface, and thus an electrical conductivity thereof is improved. In addition, a lithium battery including the negative active material has an improved efficiency and lifetime.

Abstract: Inexpensive product consisting of porous carbon, with a pore structure which is suitable for retaining electrode parts which can be used in particular for a use as an electrode material for a lithium-sulphur secondary battery, and a method comprising the following method steps: (a) providing a template consisting of inorganic material which contains spherical nanoparticles and pores, (b) infiltrating the pores of the template with a precursor for carbon of a first variety, (c) carbonizing so as to form an inner layer on the nanoparticles with a first microporosity, (d) infiltrating the remaining pores of the template with a precursor substance for carbon of a second variety, (e) carbonizing the precursor substance, wherein an outer layer with a second microporosity which is lower than the first microporosity is produced on the inner layer, and (f) removing the template so as to form the carbon product with layer composite structure, comprising an inner layer consisting carbon with a first, relatively high mic

Abstract: In a method of making a carbon fiber, polyacrylonitrile is dissolved into a first solvent, thereby generating a first solution. A plurality of cellulose nano-structures is dispersed in a second solvent, thereby generating a first suspension. The first suspension is mixed with the first solution, thereby generating a first mixture. The first mixture is spun so as to draw fibers from the first mixture. The fibers are stabilized and then the fibers are carbonized. A fiber includes an elongated carbonized polyacrylonitrile matrix. A plurality of carbonized cellulose nano-structures is in the carbonized polyacrylonitrile matrix.

Abstract: A composite membrane for separations includes a fabric with a non-woven array of intermingled carbon nanotubes, and a dopant incorporated with the fabric to form a non-porous, permeable composite. The composite membrane may be used to separate a target gas from a liquid by mounting the composite membrane in a housing chamber, and conditioning a permeate side of the chamber to establish a driving force for the target gas across the non-porous, permeable composite membrane.

Abstract: The present disclosure generally relates to methods of using boron-containing additives for crosslinking polysilazane green fibers, which are precursors to silicon carbide fibers. These methods provide a controllable process for crosslinking silicon carbide fibers while providing a simple way for the introduction of boron as a sintering aid into the polymer structure.

Abstract: This disclosure provides systems, methods, and apparatus related to boron nitride converted carbon fiber. In one aspect, a method may include the operations of providing boron oxide and carbon fiber, heating the boron oxide to melt the boron oxide and heating the carbon fiber, mixing a nitrogen-containing gas with boron oxide vapor from molten boron oxide, and converting at least a portion of the carbon fiber to boron nitride.

Abstract: An aluminum-carbon composition including aluminum and carbon, wherein the aluminum and the carbon form a single phase material, characterized in that the carbon does not phase separate from the aluminum when the single phase material is heated to a melting temperature.

Abstract: An antenna arrangement comprising at least a first and a second elongated structure, e.g., a coaxial cable, for guiding an electromagnetic wave is provided. Each of said structures comprises a plurality of radiation elements. The structures are positioned alongside each other in their longitudinal direction of extension forming a bundle. The elongated structures are arranged within the bundle such that the radial positions of said structures are alternated in the longitudinal direction of extension.

Abstract: Provided are a method for manufacturing a carbon nanotube-metal oxide composite, and a carbon nanotube-metal oxide composite manufactured thereby, the method comprising: dispersing carbon nanotubes in a reductive solvent to prepare a dispersion liquid; adding a co-reducing agent and a metal precursor to the dispersion liquid to prepare a mixture liquid; and performing heat treatment on the mixture liquid to coat the metal precursor on the carbon nanotubes in a metal oxide form, so that there can be provided a carbon nanotube-metal oxide composite where metal oxide particles of several nm to several tens of nm are uniformly dispersed in carbon nanotubes or combined with surfaces of the carbon nanotubes in a coating type.

Abstract: The invention relates to a composite material comprising carbon fibers and complex oxide particles, wherein the carbon fibers and the complex oxide particles have a carbon coating on at least part of their surface, said carbon coating being a non powdery coating The material is prepared by a method comprising mixing a complex oxide or precursors thereof, an organic carbon precursor and carbon fibers, and subjecting the mixture to a heat treatment in an inert or reducing atmosphere for the decomposition of the precursors The material is useful as the cathode material in a battery.

Abstract: Disclosed is a method for manufacturing carbon fiber which comprises the use of un-reacted raw material monomers in solution to prepare the precursor fiber for making the carbon fiber, and a relatively short passage period through hydrogen, which reduce production costs and increase returns. The present invention further comprises the carbon fiber precursors made thereby.

Abstract: The present invention is directed towards methods for growing diamond nanowires via chemical vapor deposition and apparatuses that incorporate these diamond nanowires.

Abstract: Methods and compositions are described for organizing nanoparticles or microparticles into nanostructures or microstructures using collagen as a template.

Abstract: In an aspect, a negative active material, a method of preparing the negative active material, and a lithium battery including the negative active material are provided. The method of preparing the negative active material may increase pulverizing efficiency in pulverizing a silicon-based bulky particle into a nano-size silicon-based primary particle and decrease a capacity loss of the obtained negative active material. The nano-size negative active material has excellent crystalline characteristics, high capacity, and high initial efficiency, due to a decrease in surface oxidation and surface damage.

Abstract: Metallic substrates having a deformable vitreous coating, obtainable by applying an alkali metal silicate-containing coating sol to the substrate and thermally densifying the layer thus obtained in a two-stage heat treatment process, the heat treatment being carried out, in the first stage, either (A) in an oxygen-containing atmosphere or (B) in a vacuum at a residual pressure of ?15 mbar and, in the second stage, in a low-oxygen atmosphere up to full densification with formation of a vitreous layer.

Abstract: According to one embodiment, the transparent electrode laminate includes a transparent substrate and an electrode layer which is formed on the transparent substrate and includes a three-dimensional network of metal nanowires. The electrode layer includes a first conductive region and a second conductive region adjacent to the first conductive region. Surfaces of the metal nanowires in the first conductive region are reacted to form reaction products. Surfaces of the metal nanowires in the second conductive region are unreacted. The second region has conductivity higher than that of the first conductive region and an optical transparency.

Abstract: A method for fabricating a continuous vapor grown carbon fiber, comprising: (a) providing a substrate which has a catalyst on its surface; (b) placing said substrate in a furnace; (c) loading said furnace with hydrogen, ammonia, or combinations thereof; (d) adjusting a temperature of said furnace to 400° C. to 900° C. to proceed heat treatment for 10 minutes to 2 hours; (e) adding a carbon-containing compound into said furnace; (f) adjusting the ratio of said carbon-containing compound and said hydrogen, ammonia, or combinations thereof; (g) adjusting the temperature of said furnace to 500° C. to 1200° C. to crack said carbon-containing compound, and thereby form a carbon fiber.

Abstract: There is provided a reinforcing carbon fiber bundle of the present invention is a reinforcing carbon fiber bundle with a sizing agent adhered to surfaces of carbon fibers, and characterized in that the sizing agent is constituted by at least two components, a first component does not melt at 150° C., and a second component in flowable at 150° C., and the reinforcing carbon fiber bundle is improved in impregnation property and openability and is excellent in workability and optimum for a composite.

Abstract: A technique allowing a portion of carbon fiber tow to maintain a rectangular cross sectional shape or to maintain an imparted desired shape, such as a wider shape with a rectangular cross-sectional profile, through a textile loom is disclosed herein.

Abstract: Provided are carbon fiber bundles which have high knot strength even if the single fiber fineness is large, and which have excellent handling properties and processability. The carbon fiber bundles have a single fiber fineness of 0.8-2.5 dtex, knot strength of 298 N/mm2 or greater. This method of producing carbon fibers having knot strength of 298 N/mm2 or greater involves a heat treatment step for heat treating, for 50-150 minutes, specific polyacrylonitrile-based precursor fiber bundles described in the description in an oxidizing atmosphere rising in temperature in the temperature range of 220-300° C.

Abstract: Provided is an epoxy-amine adduct that offers high reactivity, contributes to better adhesion between a resin and a reinforcing fiber in a fiber-reinforced composite material, and can be easily blended with another component such as a resin. The epoxy-amine adduct has two or more amino groups per molecule and is obtained by a reaction of an epoxy compound (A) having two or more alicyclic epoxy groups per molecule with an amine compound (B) having two or more amino groups per molecule.

Abstract: We report a method of preparation of highly elastic graphene oxide films, and their transformation into graphene oxide fibers and electrically conductive graphene fibers by spinning. Methods typically include: 1) oxidation of graphite to graphene oxide, 2) preparation of graphene oxide slurry with high solid contents and residues of sulfuric acid impurities. 3) preparation of large area films by bar-coating or dropcasting the graphene oxide dispersion and drying at low temperature. 4) spinning the graphene oxide film into a fiber, and 5) thermal or chemical reduction of the graphene oxide fiber into an electrically conductive graphene fiber. The resulting films and fiber have excellent mechanical properties, improved morphology as compared with current graphene oxide fibers, high electrical conductivity upon thermal reduction, and improved field emission properties.

Abstract: A graphene fiber and a preparation method thereof, where the graphene fiber is a composite fiber of metal nanowire doped graphene fiber, and principal components of the composite fiber are graphene and metal nanowires, a mass ratio of metal nanowires is 0.1%-50%, the graphene is in a form of sheet, and both the metal nanowires and graphene sheets are arranged in parallel along an axial direction of the graphene fiber. The metal nanowire doped graphene fiber is a new type of a high performance multi-functional fiber material, which achieves a significant improvement in electrical conductivity of graphene fibers through doping of metal nanowires and meanwhile demonstrates excellent tensile strength and toughness. The metal nanowire doped graphene fiber has great potential application value in a plurality of fields, for example, it is used as a lightweight flexible wire.

Abstract: A carbon fiber bundle has carbon fibers and a sizing agent, wherein the sizing agent comprises a water soluble polyurethane resin having an SP value of 11.2 to 13.3, and the sizing agent is deposited on the carbon fibers at a rate of 0.5 to 7% by mass. In another carbon fiber bundle, the sizing agent is composed of the component shown in (A) and the component shown in (B1) or (B2) below, and the sizing agent is deposited on the carbon fibers at a rate of 0.5 to 7% by mass: (A) 73 to 98% by mass of a polyoxyalkylene unit; (B1) 0.5 to 15% by mass of an aromatic ester unit, 1.5 to 10% by mass of an aromatic urethane unit; and (B2) 0.5 to 10% by mass of an aromatic ester unit, 1.5 to 11% by mass of an aliphatic urethane unit.

Abstract: (Problem) In conventional method for producing artificial graphite, in order to obtain a product having excellent crystallinity, it was necessary to mold a filler and a binder and then repeat impregnation, carbonization and graphitization, and since carbonization and graphitization proceeded by a solid phase reaction, a period of time of as long as 2 to 3 months was required for the production and cost was high and further, a large size structure in the shape of column and cylinder could not be produced. In addition, nanocarbon materials such as carbon nanotube, carbon nanofiber and carbon nanohorn could not be produced.

Abstract: The present invention discloses a graphene fiber and a method of manufacturing the same. The graphene fiber is manufactured by oxidizing graphite, dispersing, spinning, drying and heat treatment, and has a diameter less than 100 ?m, a ratio of length to diameter greater than 10, and a ratio of carbon to oxygen greater than 5. The graphene fiber is formed of a plurality of graphene sheets, which envelop an axis and are coaxially stacked one by one from the axis. The thickness of the graphene sheet is less than 3 nm, and chemical bonds are formed to tightly bond the graphene sheets to exhibit excellent mechanical and thermally/electrically conductive properties. The method of the present invention is implemented by simple steps so as to greatly reduce poisonous chemicals possibly generated in the manufacturing environment, thereby improving the safety of manufacturing and reducing the whole processing time and cost.

Abstract: Provided is the following sample fixing member for a nano indenter. The member can stably fix a sample, the plastic deformation of the member is alleviated, and the member enables accurate nano indenter measurement. A sample fixing member for a nano indenter of the present invention includes a fibrous columnar structure including a plurality of fibrous columnar objects each having a length of 200 ?m or more.

Abstract: In various embodiments an improved binder composition, electrolyte composition and a separator film composition using discrete carbon nanotubes. Their methods of production and utility for energy storage and collection devices, like batteries, capacitors and photovoltaics, is described. The binder, electrolyte, or separator composition can further comprise polymers. The discrete carbon nanotubes further comprise at least a portion of the tubes being open ended and/or functionalized. The utility of the binder, electrolyte or separator film composition includes improved capacity, power or durability in energy storage and collection devices. The utility of the electrolyte and or separator film compositions includes improved ion transport in energy storage and collection devices.

Abstract: Surface films, paints, or primers can be used in preparing aircraft structural composites that may be exposed to lightning strikes. Methods for making and using these films, paints or primers are also disclosed. The surface film can include a thermoset resin or polymer, e.g., an epoxy resin and/or a thermoplastic polymer, which can be cured, bonded, or painted on the composite structure. Low-density electrically conductive materials are disclosed, such as carbon nanofiber, copper powder, metal coated microspheres, metal-coated carbon nanotubes, single wall carbon nanotubes, graphite nanoplatelets and the like, that can be uniformly dispersed throughout or on the film. Low density conductive materials can include metal screens, optionally in combination with carbon nanofibers.

Abstract: There is provided a material for molding including: carbon fiber bundles which are easily impregnated including carbon fibers and at least one impregnation aid in an amount of 3 to 15 parts by mass based on 100 parts by mass of the carbon fibers, the at least one impregnation aid satisfying specific requirements; and a polycarbonate is adhered thereto in an amount of 50 to 2000 parts by mass.

Abstract: An impregnated fiber tow comprising multiple unitary graphene-based continuous graphitic fibers impregnated with a matrix material, wherein at least one of the continuous graphitic fibers comprises at least 90% by weight of graphene planes that are chemically bonded with one another having an inter-planar spacing d002 from 0.3354 nm to 0.4 nm as determined by X-ray diffraction and an oxygen content less than 5% by weight, wherein the graphene planes are parallel to one another and parallel to a fiber axis direction and the graphitic fiber contains no core-shell structure, has no helically arranged graphene domains or domain boundary, and has a porosity level less than 5% by volume.

Abstract: Permeable composite fibrous catalytic sheets comprised of at least three distinct solid phases. A first solid phase is a 3-dimensional porous network of a non-conductive porous ceramic material. A second solid phase is an electrically conductive phase comprised of randomly oriented electrically conductive fibers. A third phase is comprised of catalytic particles dispersed on said 3-dimensional porous network, said conductive fibers, or both. A fourth phase can be present, which fourth phase is comprised one or more conductive species or one or more non conductive species embedded in said first solid phase.

Abstract: Methods of producing silicon carbide fibers. The method comprises reacting a continuous carbon fiber material and a silicon-containing gas in a reaction chamber at a temperature ranging from approximately 1500° C. to approximately 2000° C. A partial pressure of oxygen in the reaction chamber is maintained at less than approximately 1.01×102 Pascal to produce continuous alpha silicon carbide fibers. Continuous alpha silicon carbide fibers and articles formed from the continuous alpha silicon carbide fibers are also disclosed.

Abstract: The present invention relates to a carbon fiber bundle excellent in terms of adhesion to matrix resins and process handleability and less apt to suffer the shedding of the sizing agent in processing steps the carbon fiber bundle being a carbon fiber bundle having a sizing agent adherent to the surface thereof, characterized in that the carbon fiber bundle includes a plurality of carbon fibers and the sizing agent includes a copolyamide resin, the copolyamide resin having both a specific polyamide component and nylon-6 and/or nylon-66 as repeating units and having a melting point of 180° C. or lower, the copolyamide resin preferably having a melting point of 60 to 160° C., or a glass transition temperature of ?20 to 50° C.

Abstract: The invention is directed to carbon fibers having high tensile strength and modulus of elasticity. The invention also provides a method and apparatus for making the carbon fibers. The method comprises advancing a precursor fiber through an oxidation oven wherein the fiber is subjected to controlled stretching in an oxidizing atmosphere in which tension loads are distributed amongst a plurality of passes through the oxidation oven, which permits higher cumulative stretches to be achieved. The method also includes subjecting the fiber to controlled stretching in two or more of the passes that is sufficient to cause the fiber to undergo one or more transitions in each of the two or more passes. The invention is also directed to an oxidation oven having a plurality of cooperating drive rolls in series that can be driven independently of each other so that the amount of stretch applied to the oven in each of the plurality of passes can be independently controlled.

Abstract: Composite rods and tapes are provided. In one embodiment, a composite rod includes a core, the core including a thermoplastic material and a plurality of continuous fibers embedded in the thermoplastic material. The plurality of continuous fibers have a generally unidirectional orientation within the thermoplastic material. The core further includes one or more sensing elements embedded in the thermoplastic material. The core has a void fraction of about 5% or less. A sensing element may be, for example, fiber optic cable, a radio frequency identification transmitter, a copper fiber, or an aluminum fiber.

Abstract: The present invention aims to provide a sizing agent for a reinforcement fiber used for reinforcing thermoplastic matrix resins. The sizing agent uniformly spreads on reinforcement fiber surface and imparts, to a reinforcement fiber, both excellent splittability and bonding performance to thermoplastic matrix resins. The sizing agent for a reinforcement fiber of the present invention comprises essentially an ester compound (A) having a vinyl ester group, acrylate group or methacrylate group bonded to at least one of the chain ends of the main chain of the ester compound (A), and of a polyoxyalkylene alkyl ether (B) which is an adduct between an alkylene oxide and a C4-14 monohydric alcohol. When water is added to the sizing agent thereby producing a mixture with a nonvolatile content of 1 weight %, the mixture exhibits a dynamic surface tension ranging from 40 to 55 mN/m determined by the maximum bubble pressure method when bubbles are blown into the mixture at the rate of one bubble per 100 milliseconds.

Abstract: Disclosed are composite rods that include cores and capping layers surrounding the cores. A capping layer may surround and be bonded to a core, and may beneficially provide improved wear resistance to the rod. The capping layer can include a high performance polymer and a hydrophobic lubricant. In addition to improving wear resistance, the capping layer may include components that can advantageously modify the surface energy of the capping layer as desired for particular applications.