With Metal, Metal Compound, Or Phosphorus Compound Patents (Class 423/447.5)
-
Patent number: 11575131Abstract: The present disclosure relates to an anode electrode active material for a secondary battery containing nickel cobalt molybdenum oxide, an anode electrode for a secondary battery including the same, a secondary battery including the anode electrode for a secondary battery, and a method for manufacturing the same. The novel anode electrode material for a sodium secondary battery containing nickel cobalt molybdenum oxide according to the present disclosure allows intercalation/deintercalation reaction of sodium ion during charge/discharge and does not undergo significant volume change during the intercalation reaction because structure is maintained stably during repeated charge/discharge. As a result, electrode damage and electric short circuit are decreased and, thus, improved electrochemical characteristics can be achieved in long-life and high-rate capability.Type: GrantFiled: August 11, 2020Date of Patent: February 7, 2023Assignees: Korea Institute of Science and Technology, Dongguk University Industry-Academic Cooperation FoundationInventors: Kyung Yoon Chung, Kyung-Wan Nam, Jaeho Park, Daniel Adjah Anang
-
Patent number: 11542156Abstract: A method for forming a microscale device may include growing, by a chemical vapor deposition, a patterned forest of vertically aligned carbon nanotubes, wherein the patterned forest defines a component of the microscale device, and applying a conformal non-metal coating to the vertically aligned carbon nanotubes throughout the patterned forest, wherein the conformal non-metal coating comprises a substantially uniform thickness along a length of the vertically aligned carbon nanotubes.Type: GrantFiled: December 18, 2020Date of Patent: January 3, 2023Assignee: CNT Holdings, LLCInventors: Robert C. Davis, Richard Vanfleet
-
Patent number: 11389789Abstract: The invention discloses a visible light responsive titanium dioxide nanowire/metal organic skeleton/carbon nanofiber membrane and preparation method and application thereof. A CNF (Carbon Nano Fiber)/TiO2 nano-wire/MIL-100 (represented as CTWM) membrane material is prepared and an MIL-100 material is used for adsorbing waste gas to enhance the photocatalytic effect of titanium dioxide on the membrane material; a CNF/TiO2/MIL-100 membrane catalyst sufficiently utilizes the adsorption capability of MIL-100 on the waste gas, the photocatalytic degradation performance of the TiO2 and high electrical conductivity of CNF to effectively prolong the service life of photoelectrons and promote the photocatalytic activity of the photoelectrons.Type: GrantFiled: May 30, 2019Date of Patent: July 19, 2022Assignee: SOOCHOW UNIVERSITYInventors: Jianmei Lu, Dongyun Chen, Jun Jiang
-
Patent number: 11348890Abstract: An assembly platform for arrangement as an interposer device between an integrated circuit and a substrate to interconnect the integrated circuit and the substrate through the assembly platform, the assembly platform comprising: an assembly substrate; a plurality of conducting vias extending through the assembly substrate; at least one nanostructure connection bump on a first side of the assembly substrate, the nanostructure connection bump being conductively connected to the vias and defining connection locations for connection with at least one of the integrated circuit and the substrate, wherein each of the nanostructure connection bumps comprises: a plurality of elongated conductive nanostructures vertically grown on the first side of the assembly substrate, wherein the plurality of elongated nanostructures are embedded in a metal for the connection with at least one of the integrated circuit and the substrate, at least one connection bump on a second side of the assembly substrate, the second side beingType: GrantFiled: October 22, 2020Date of Patent: May 31, 2022Assignee: SMOLTEK ABInventors: M Shafiqul Kabir, Anders Johansson, Vincent Desmaris, Muhammad Amin Saleem
-
Patent number: 10590258Abstract: A carbon fiber precursor composition and a method for preparing carbon fiber precursor are provided. The carbon fiber precursor composition includes 100 parts by weight of acrylonitrile; 1-15 parts by weight of co-monomer; and, 0.1-3 parts by weight of stereoregularity controlling agent. The stereoregularity controlling agent has a structure represented by formula (I), Formula (II), Formula (III), or Formula (IV): wherein R1 and R2 are hydrogen, —OH, —COOH, or —NH2; R3 is C2-8 alkylene, or carbonyl; R4 is hydrogen, or C1-6 alkyl; and, R5 is C3-6 alkylene.Type: GrantFiled: December 28, 2017Date of Patent: March 17, 2020Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chung-Yang Chuang, Kai-Jen Hsiao, Jing-Wen Tang, Tzong-Ming Lee
-
Patent number: 9901913Abstract: A catalyst, which is obtained by mixing a compound expressed by the following Structural Formula (1), a nitroalkane compound, a neodymium-containing compound, a sodium-containing compound, and a carbon structure:Type: GrantFiled: February 7, 2014Date of Patent: February 27, 2018Assignee: MICROBIAL CHEMISTRY RESEARCH FOUNDATIONInventors: Masakatsu Shibasaki, Naoya Kumagai, Takanori Ogawa
-
Patent number: 9859561Abstract: Methods of making cathodes for lithium-sulfur batteries are disclosed, in addition to cathodes and batteries containing the cathodes. A method of making a cathode is disclosed which includes extracting lignosulfonate from brown liquor, pyrolyzing the lignosulfonate, carbonizing the pyrolyzed lignosulfonate to form a carbon-sulfur compound, and forming the carbon-sulfur compound into a cathode. A cathode for a lithium-sulfur battery is disclosed which includes pyrolized lignosulfonate recovered from brown liquor, and carbon. The pyrolized lignosulfonate and carbon are suspended in a matrix having a substantially homogenous distribution of sulfur. A battery is disclosed in which an anode including an electrolye, lithium, is provided along with a membrane separate and a carbon comprising a carbon-sulfur compound derived from lignosulfonates.Type: GrantFiled: October 14, 2014Date of Patent: January 2, 2018Assignee: Rensselaer Polytechnic InstituteInventors: Trevor Simmons, Rahul Mukherjee
-
Patent number: 9745644Abstract: Disclosed are a composite nanofiber membrane for the adsorption of lithium, a method for preparing the same, and a lithium recovery apparatus and method using the same. The composite nanofiber membrane for the adsorption of lithium is immobilized with manganese oxide selectively adsorptive of lithium. The composite nanofiber membrane for lithium adsorption exhibits high selectivity for lithium ions and allows for the rapid and easy diffusion of lithium ions through interstitial spaces of the adsorbent. Particularly, the lithium recovery apparatus using the composite nanofiber membrane for lithium adsorption is able to effectively adsorb lithium ions dissolved in seawater in a selective manner within a short period of time, thus reducing the time taken for the adsorption process.Type: GrantFiled: January 15, 2015Date of Patent: August 29, 2017Assignee: MYONGJI UNIVERSITY INDUSTRY AND ACADEMIA COOPERATION FOUNDATIONInventors: Wook-Jin Chung, Myoung Jun Park, Grace M. Nisola, Arnel B. Beltran, Rey Eliseo C. Torrejos, Jeong Gil Seo, Seong-Poong Lee, Young Deuk Yoo
-
Patent number: 8536080Abstract: A metal carbide ceramic fiber having improved mechanical properties and characteristics and improved processes and chemical routes for manufacturing metal carbide ceramic fiber. Metal carbide ceramic fibers may be formed via reaction bonding of a metal-based material (e.g. boron) with the inherent carbon of a carrier medium. One embodiment includes a method of making a metal carbide ceramic fiber using VSSP to produce high yield boron carbide fiber. Embodiments of the improved method allow high volume production of high density boron carbide fiber. The chemical routes may include a direct production of boron carbide fiber from boron carbide powder (B4C) and precursor (e.g. rayon fiber) having a carbon component to form a B4C/rayon fiber that may be processed at high temperature to form boron carbide fiber, and that may be subsequently undergo a hot isostatic pressing to improve fiber purity. Another route may include a carbothermal method comprising combining boron powder (B) with a precursor (e.g.Type: GrantFiled: June 18, 2009Date of Patent: September 17, 2013Assignee: Advanced Cetametrics, Inc.Inventors: Farhad Mohammadi, Richard B. Cass
-
Publication number: 20120157298Abstract: The invention is directed to a process for producing carbon nanofibres and/or carbon nanotubes, which process comprises pyrolysing a particulate cellulosic and/or carbohydrate substrate that has been impregnated with a compound of an element or elements, the metal or alloy, respectively, of which is capable of forming carbides, in a substantially oxygen free, volatile silicon compound containing atmosphere, optionally in the presence of a carbon compound.Type: ApplicationFiled: March 1, 2010Publication date: June 21, 2012Inventors: J. Hoekstra, John Wilhelm Geus, L. W. Jenneskens
-
Patent number: 8197790Abstract: A method of making a filter material for producing potable water comprises providing activated carbon particles, depositing one or more nanofilament precursors at least partially onto the surface of the activated carbon particles, agitating the activated carbon particles and deposited nanofilament precursors in the presence of carbonaceous vapor, and heating the activated carbon particles and the deposited nanofilament precursors in the presence of carbonaceous vapor at a temperature and time sufficient to produce the filter material comprising activated carbon particles having carbon nanofilaments on the surface of the particles.Type: GrantFiled: April 13, 2009Date of Patent: June 12, 2012Assignee: PUR Water Purification Products, Inc.Inventors: Michael Donovan Mitchell, Dimitris Ioannis Collias
-
Patent number: 8137591Abstract: The present invention relates to a catalyst composition for preparing carbon nanotube containing multi-component support materials of amorphous Si, Mg and Al as well as a bulk scale preparation process for preparing carbon nanotube using said catalyst composition. More specifically, this invention relates to a process for preparing carbon nanotube using the catalyst composition comprising a transition metal catalyst and support materials of amorphous Si, Mg and Al.Type: GrantFiled: September 29, 2009Date of Patent: March 20, 2012Assignee: Korea Kumho Petrochemical Co., Ltd.Inventors: Dong Hwan Kim, Sang-Hyo Ryu, Wan Sung Lee, Namsun Choi, Hyun-Kyung Sung, Youngchan Jang
-
Publication number: 20110280793Abstract: Disclosed is a method of: providing a mixture of a polymer or a resin and a transition metal compound, producing a fiber from the mixture, and heating the fiber under conditions effective to form a carbon nanotube-containing carbonaceous fiber. The polymer or resin is an aromatic polymer or a precursor thereof and the mixture is a neat mixture or is combined with a solvent. Also disclosed are a carbonaceous fiber or carbonaceous nanofiber sheet having at least 15 wt. % carbon nanotubes, a fiber or nanofiber sheet having the a polymer or a resin and the transition metal compound, and a fiber or nanofiber sheet having an aromatic polymer and metal nanoparticles.Type: ApplicationFiled: July 22, 2011Publication date: November 17, 2011Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Teddy M. Keller, Matthew Laskoski
-
Patent number: 7985394Abstract: A system and method for manufacturing carbon nanotubes via epitaxial growth from a source of supersaturated carbon solution is disclosed, whereby selection of the diameter, length, and chirality of single-walled or multi-walled nanotubes is enabled.Type: GrantFiled: September 19, 2007Date of Patent: July 26, 2011Inventor: Gideon Duvall
-
Publication number: 20110121227Abstract: Disclosed is a method of: providing a mixture of a polymer or a resin and a transition metal compound, producing a fiber from the mixture, and heating the fiber under conditions effective to form a carbon nanotube-containing carbonaceous fiber. The polymer or resin is an aromatic polymer or a precursor thereof and the mixture is a neat mixture or is combined with a solvent. Also disclosed are a carbonaceous fiber or carbonaceous nanofiber sheet having at least 15 wt. % carbon nanotubes, a fiber or nanofiber sheet having the a polymer or a resin and the transition metal compound, and a fiber or nanofiber sheet having an aromatic polymer and metal nanoparticles.Type: ApplicationFiled: February 4, 2011Publication date: May 26, 2011Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Teddy M. Keller, Matthew Laskoski
-
Patent number: 7906095Abstract: When growing carbon nanotubes, a substrate is delivered into a thermal CVD chamber whose internal temperature is a room temperature, and a mixed gas of an inert gas and a raw gas is introduced in the inside thereof. After a pressure inside of the chamber is stabilized at 1 kPa, the temperature in the chamber is raised to 510° C. in 1 minute. As a result, the carbon nanotubes start to grow linearly from the respective catalytic particles without any fusion of each of the catalytic particles. Subsequently, the temperature and an atmosphere are maintained for about 30 minutes. Once the carbon nanotubes start to grow, surfaces of the catalytic particles are covered by carbon, so that any fusion of each of the catalytic particles can be avoided even during the maintenance for about 30 minutes.Type: GrantFiled: June 26, 2008Date of Patent: March 15, 2011Assignee: Fujitsu LimitedInventor: Akio Kawabata
-
Patent number: 7901654Abstract: Methods, processes, and apparatuses for the large scale synthesis of single-walled carbon nanotubes having small diameters are provided. Metal catalysts having small diameter and narrow distribution of particle sizes are prepared and continuously injected as aerosols into a reactor. The metal catalysts are supported on supports that are substantially free of carbon, and the reactor is configured to control the flow of the gases such that the reaction time and contact of the reactants with the reactor walls can be controlled. Single-walled carbon nanotubes can be continuously synthesized at a large scale and with high yields, and with small diameters and with narrow diameter ranges.Type: GrantFiled: May 4, 2006Date of Patent: March 8, 2011Assignee: Honda Motor Co., Ltd.Inventor: Avetik Harutyunyan
-
Patent number: 7887771Abstract: Methods for manufacturing carbon nanostructures include 1) forming intermediate carbon nanostructures by polymerizing a carbon precursor in the presence of templating nanoparticles, 2) carbonizing the intermediate carbon nanostructures to form an intermediate composite nanostructure, and 3) removing the templating nanoparticles from the intermediate composite nanostructure to form carbon nanorings. The carbon nanorings manufactured using the foregoing steps have one or more carbon layers forming a wall that defines a generally annular nanostructure having a hole. The length of the nanoring is less than or about equal to the outer diameter thereof. The carbon nanostructures are well-suited for use as a fuel cell catalyst support. The carbon nanostructures exhibit high surface area, high porosity, high graphitization, and facilitate mass transfer and electron transfer in fuel cell reactions.Type: GrantFiled: October 5, 2006Date of Patent: February 15, 2011Assignees: Headwaters Technology Innovation, LLC, Dalian InstituteInventors: Gongquan Sun, Shuihua Tang, Shiguo Sun, Qin Xin, Changkun Liu, Bing Zhou
-
Patent number: 7868333Abstract: Processes are provided for removing metal-based catalyst residues from carbon nanotubes by contacting the carbon nanotubes with an active metal agent and carbon monoxide.Type: GrantFiled: November 28, 2007Date of Patent: January 11, 2011Assignee: E.I. du Pont de Nemours and CompanyInventor: Steven Dale Ittel
-
Patent number: 7799726Abstract: A composite comprising a support activated by impregnation and carbon nanotubes or nanofibers formed by vapor deposition, wherein the weight of said carbon nanotubes or nanofibers formed on the said support is at least equal to 10.Type: GrantFiled: November 20, 2002Date of Patent: September 21, 2010Assignees: Sicat, Centre National de la Recherche; Scientifique, Universite de StrasbourgInventors: Cuong Pham-Huu, Ricardo Vieira, Marc J. Ledoux, Loïc Charbonniere, Raymond Ziessel
-
Patent number: 7794682Abstract: A method of extracting fullerenes from a carbon matrix in which they are produced. The method is applicable to both fullerenes that exhibit greater than 0.1 mg/ml solubility in toluene and to fullerenes that are essentially insoluble in toluene, i.e., those exhibiting less than or equal to 0.1 mg/ml solubility. The method disclosed herein extracts more of the soluble fullerenes from the carbon matrix than extraction conducted by solely contacting with solvent. A method is also provided for creating salts of the extracted fullerenes.Type: GrantFiled: February 28, 2006Date of Patent: September 14, 2010Assignee: TDA Research, Inc.Inventors: Michael D. Diener, James W. Raebiger, Robert D. Bolskar, John M. Alford
-
Patent number: 7785558Abstract: The present invention relates to a method of manufacturing a carbon nanostructure for growing crystalline carbon by vapor deposition from a crystal growth surface of a catalytic base including a catalytic material, and in particular, to a method of manufacturing a carbon nanostructure where at least two gases including a feedstock gas are brought into contact with the catalytic base simultaneously. Preferably, the at least two gases are constituted by at least one feedstock gas and at least one carrier gas. Preferably, the carrier gas is brought into contact with the crystal growth surface, and the feedstock gas is brought into contact with at least a part of a region except for the crystal growth surface with which the carrier gas has been brought into contact. Preferably, the material gas contains an ion, and further preferably, it contains a carbon ion.Type: GrantFiled: January 28, 2005Date of Patent: August 31, 2010Assignee: Sumitomo Electric Industries, Ltd.Inventor: Takeshi Hikata
-
Patent number: 7776307Abstract: Single-walled carbon nanotube transistor devices, and associated methods of making such devices include a porous structure for the single-walled carbon nanotubes. The porous structure may be anodized aluminum oxide or another material. Electrodes for source and drain of a transistor are provided at opposite ends of the single-walled carbon nanotube devices. A concentric gate surrounds at least a portion of a nanotube in a pore. A transistor of the invention may be especially suited for power transistor or power amplifier applications.Type: GrantFiled: August 21, 2006Date of Patent: August 17, 2010Assignee: Etamota CorporationInventor: Thomas W. Tombler
-
Patent number: 7767615Abstract: A method for producing aligned carbon nanotubes and/or nanofibres comprises providing finely divided substrate particle having substantially smooth faces with radii of curvature of more than 1 ?m and of length and breadth between 1 ?m and 5 mm and having catalyst material on their surface and a carbon-containing gas at a temperature and pressure at which the carbon-containing gas will react to form carbon when in the presence of the supported catalyst, and forming aligned nanotubes and/or nanofibres by the carbon-forming reaction.Type: GrantFiled: November 13, 2003Date of Patent: August 3, 2010Assignee: Cambridge University Technical Services LimitedInventors: Ian Kinloch, Charanjeet Singh, Milo Sebastian Peter Shaffer, Krzysztof K. K. Koziol, Alan Windle
-
Patent number: 7767616Abstract: A catalyst for an electro-chemical oxygen reduction reaction (ORR) of a bundle of longitudinally aligned carbon nanotubes having a catalytically active transition metal incorporated longitudinally in said nanotubes. A method of making an electro-chemical catalyst for an oxygen reduction reaction (ORR) having a bundle of longitudinally aligned carbon nanotubes with a catalytically active transition metal incorporated throughout the nanotubes, where a substrate is in a first reaction zone, and a combination selected from one or more of a hydrocarbon and an organometallic compound containing an catalytically active transition metal and a nitrogen containing compound and an inert gas and a reducing gas is introduced into the first reaction zone which is maintained at a first reaction temperature for a time sufficient to vaporize material therein.Type: GrantFiled: March 3, 2006Date of Patent: August 3, 2010Assignee: UChicago Argonne, LLCInventors: Di-Jia Liu, Junbing Yang, Xiaoping Wang
-
Patent number: 7718156Abstract: Carbon nanostructures are formed from a carbon precursor and catalytic templating nanoparticles. Methods for manufacturing carbon nanostructures generally include (1) forming a precursor mixture that includes a carbon precursor and a plurality of catalytic templating particles, (2) carbonizing the precursor mixture to form an intermediate carbon material including carbon nanostructures, amorphous carbon, and catalytic metal, (3) purifying the intermediate carbon material by removing at least a portion of the amorphous carbon and optionally at least a portion of the catalytic metal, and (4) heat treating the purified intermediate carbon material and/or treating the purified intermediate carbon material with a base to remove functional groups on the surface thereof. The removal of functional groups increases the graphitic content of the carbon nanomaterial and decreases its hydrophilicity.Type: GrantFiled: December 20, 2006Date of Patent: May 18, 2010Assignee: Headwaters Technology Innovation, LLCInventors: Cheng Zhang, Martin Fransson, Bing Zhou
-
Patent number: 7718155Abstract: Methods for manufacturing carbon nanostructures include: 1) forming a plurality of catalytic templating particles using a plurality of dispersing agent molecules; 2) forming an intermediate carbon nanostructure by polymerizing a carbon precursor in the presence of the plurality of templating nanoparticles; 3) carbonizing the intermediate carbon nanostructure to form a composite nanostructure; and 4) removing the templating nanoparticles from the composite nanostructure to yield the carbon nanostructures. The carbon nanostructures are well-suited for use as a catalyst support. The carbon nanostructures exhibit high surface area, high porosity, and high graphitization. Carbon nanostructures according to the invention can be used as a substitute for more expensive and likely more fragile carbon nanotubes.Type: GrantFiled: October 5, 2006Date of Patent: May 18, 2010Assignee: Headwaters Technology Innovation, LLCInventors: Cheng Zhang, Martin Fransson, Changkun Liu, Bing Zhou
-
Publication number: 20090311168Abstract: A system and method for manufacturing carbon nanotubes via epitaxial growth from a source of supersaturated carbon solution is disclosed, whereby selection of the diameter, length, and chirality of single-walled or multi-walled nanotubes is enabled.Type: ApplicationFiled: September 19, 2007Publication date: December 17, 2009Inventor: Gideon Duvall
-
Patent number: 7625544Abstract: A method for manufacturing open-ended carbon nanotubes is described. The method includes steps of: providing a substrate having a catalyst layer formed thereon; placing the substrate in a reaction chamber; introducing a carbon source gas containing carbon element into the reaction chamber for growing carbon nanotubes form the catalyst layer; promptly reducing a concentration of the carbon source gas when the growth of carbon nanotubes in process, thereby ceasing the growth of the carbon nanotubes instantly; and separating the carbon nanotubes from the catalyst layer.Type: GrantFiled: July 11, 2006Date of Patent: December 1, 2009Assignees: Tsinghua University, Hon Hai Precisiion Industry Co., Ltd.Inventors: Kai Liu, Kai-Li Jiang, Shou-Shan Fan
-
Patent number: 7622732Abstract: Heterostructure devices incorporate carbon nanotube technology to implement rectifying devices including diodes, rectifiers, silicon-controlled rectifiers, varistors, and thyristors. In a specific implementation, a rectifying device includes carbon nanotube and nanowire elements. The carbon nanotubes may be single-walled carbon nanotubes. The devices may be formed using parallel pores of a porous structure. The porous structure may be anodized aluminum oxide or another material. A device of the invention may be especially suited for high power applications.Type: GrantFiled: August 4, 2006Date of Patent: November 24, 2009Assignee: Atomate CorporationInventor: Thomas W. Tombler, Jr.
-
Patent number: 7597941Abstract: A method of synthesizing and controlling the internal diameters, conical angles, and morphology of tubular carbon nano/micro structures. Different morphologies can be synthesized included but not limited to cones, straight tubes, nozzles, cone-on-tube (funnels), tube-on-cone, cone-tube-cone, n-staged structures, multijunctioned tubes, Y-junctions, dumbbell (pinched morphology) and capsules. The process is based on changing the wetting behavior of a low melting metals such as gallium, indium, and aluminum with carbon using a growth environment of different gas phase chemistries. The described carbon tubular morphologies can be synthesized using any kind of gas phase excitation such as, but not limited to, microwave excitation, hot filament excitation, thermal excitation and Radio Frequency (RF) excitations. The depositions area is only limited by the substrate area in the equipment used and not limited by the process.Type: GrantFiled: September 9, 2004Date of Patent: October 6, 2009Assignee: University of Louisville Research Foundation, Inc.Inventors: Mahendra Kumar Sunkara, Gopinath Bhimarasetti
-
Publication number: 20090065765Abstract: A method for manufacturing carbon nanotubes includes the steps of: (a) depositing catalytic fine particles containing Al—Fe, Zr—Co or Hf—Co on a base body; and (b) growing carbon nanotubes on the catalytic fine particles deposited on the base body.Type: ApplicationFiled: September 15, 2008Publication date: March 12, 2009Applicant: FUJITSU LIMITEDInventors: Daiyu KONDO, Shintaro SATO
-
Patent number: 7470418Abstract: The present invention discloses ultra-fine fibrous carbon and preparation of the same. Specifically, the present ultra-fine fibrous carbon is characterized by the graphite-like structure with the sp2 hybrid carbon content of more than 95% per total content; the (002) plane interlayer spacing (d002, d-spacing of C(002) profiles determined by X-ray diffraction method) of 0.3370-0.3700 nm; the (002) plane stacking of more than 4 layers, namely the stacking height (Lc002) of more than 1.5 nm; fibrous carbon length per fibrous carbon width of diameter (aspect ratio) of more than 20; the average diameter of 5˜50 nm.Type: GrantFiled: October 17, 2003Date of Patent: December 30, 2008Assignee: Nexen Nano Tech Co., Ltd.Inventor: Seong Ho Yoon
-
Patent number: 7229944Abstract: Fiber structures that include a catalytic material are provided. The fiber structures (e.g., membranes) may be formed of interconnected carbon fibers. The catalytic material may be in the form of nanosize particles supported on the fibers. In one method of the invention, the structures are produced by electrospinning a polymeric material fiber structure that is subsequently converted to a carbon fiber structure in a heat treatment step which also causes the catalytic material particles to nucleate on the carbon fibers and grow to a desired size. The catalytic material may be uniformly distributed across the carbon fiber structure and the amount of catalytic material may be controlled. These factors may enhance catalytic performance and/or enable using less catalytic material for equivalent catalytic performance which can lead to cost savings, amongst other advantages. The fiber structures may be used in a variety of applications including electrodes in batteries and fuel cells.Type: GrantFiled: July 23, 2004Date of Patent: June 12, 2007Assignee: Massachusetts Institute of TechnologyInventors: Yang Shao-Horn, John Paul Kurpiewski, Quinn C. Horn
-
Patent number: 7198771Abstract: The invention comprises a chemical composition with the structure shown below. The composition can be polymerized or pyrolyzed, forming transition metal nanoparticles homogeneously dispersed in a thermoset or carbon composition. The size of the nanoparticles can be controlled by manipulating the number and arrangement of functional groups in the composition and by changing the conditions of the polymerization or pyrolysis. The resulting thermosets and carbon compositions have useful magnetic, electric, mechanical, catalytic and/or optical properties.Type: GrantFiled: August 28, 2003Date of Patent: April 3, 2007Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, Joseph Perrin, Syed B. Qadri
-
Patent number: 7160531Abstract: Novel methods and apparati for continuous production of aligned carbon nanotubes are disclosed. In one aspect, the method comprises dispersion of a metal catalyst in a liquid hydrocarbon to form a feed solution, and volatilizing the feed solution in a reactor through which a substrate is continuously passed to allow growth of nanotubes thereon. In another aspect, the apparatus comprises a reactor, a tube-within-a-tube injector, and a conveyor belt for passing a substrate through the reactor. The present invention further discloses a method for restricting the external diameter of carbon nanotubes produced thereby comprising passing the feed solution through injector tubing of a specified diameter, followed by passing the feed solution through an inert, porous medium. The method and apparati of this invention provide a means for producing aligned carbon nanotubes of a particular external diameter which is suitable for large scale production in an industrial setting.Type: GrantFiled: May 8, 2002Date of Patent: January 9, 2007Assignee: University of Kentucky Research FoundationInventors: David N. Jacques, Rodney J. Andrews
-
Patent number: 7150840Abstract: A graphitized fine carbon fiber comprising a hollow space extending along its center axis, and a plurality of graphene sheets, wherein the fiber has an end surface comprising a portion of discontinuity in which ends of graphene sheets are not bonded to one another and at least one portion of continuity comprised of at least one group of graphene sheets in which one graphene sheet is bonded to another graphene sheet adjacent thereto.Type: GrantFiled: August 27, 2003Date of Patent: December 19, 2006Assignee: Showa Denko K.K.Inventors: Ryuji Yamamoto, Akinori Sudoh
-
Patent number: 7122132Abstract: A branched vapor-grown carbon fiber having an outer diameter of 0.5 ?m or less and an aspect ratio of at least 10, the carbon fiber having a compressed specific resistance of 0.02 ?·cm or less, each fiber filament having a hollow cylindrical structure, preferably the carbon fiber containing boron and having a compressed specific resistance of 0.018 ?·cm or less. An electrically conductive transparent composition comprising a resin binder and carbon fiber incorporated into the binder, having transparency and comprising vapor grown carbon fiber having an outer diameter of 0.01–0.1 ?m, an aspect ratio of 10–15,000, and a compressed specific resistance of 0.02 ?·cm or less, and surface resistivity of 10,000 ?/? or less. An electrically conductive transparent material formed from the aforementioned electrically conductive transparent composition.Type: GrantFiled: December 19, 2001Date of Patent: October 17, 2006Assignee: Showa Denko K.K.Inventors: Toshio Morita, Hitoshi Inoue, Ryuji Yamamoto
-
Patent number: 6936565Abstract: Compositions including modified carbide-containing nanorods and/or modified oxycarbide-containing nanorods and/or modified carbon nanotubes bearing carbides and oxycarbides and methods of making the same are provided. Rigid porous structures including modified oxycarbide-containing nanorods and/or modified carbide containing nanorods and/or modified carbon nanotubes bearing modified carbides and oxycarbides and methods of making the same are also provided. The compositions and rigid porous structures of the invention can be used either as catalyst and/or catalyst supports in fluid phase catalytic chemical reactions. Processes for making supported catalyst for selected fluid phase catalytic reactions are also provided.Type: GrantFiled: October 29, 2001Date of Patent: August 30, 2005Assignee: Hyperion Catalysis International, Inc.Inventors: Jun Ma, David Moy
-
Patent number: 6890504Abstract: The invention comprises a chemical composition with the structure shown below. The composition can be polymerized or pyrolyzed, forming transition metal nanoparticles homogeneously dispersed in a thermoset or carbon composition. The size of the nanoparticles can be controlled by manipulating the number and arrangement of functional groups in the composition and by changing the conditions of the polymerization or pyrolysis. The resulting thermosets and carbon compositions have useful magnetic, electric, mechanical, catalytic and/or optical properties.Type: GrantFiled: August 28, 2003Date of Patent: May 10, 2005Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, Syed B. Qadri
-
Patent number: 6884861Abstract: The present invention provides for a composition comprising: a composition formed by heating to a temperature of from about 300° C.Type: GrantFiled: December 10, 2001Date of Patent: April 26, 2005Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, Joseph Perrin, Syed B. Qadri
-
Patent number: 6841509Abstract: A carbon nanocapsule supported catalysts. At least one kind of catalytic metal particle is deposited to a carbon nanocapsule, wherein the carbon nanocapsule has the following formula: F(?M)n, in which F is the carbon nanocapsule, M is the catalytic metal particle, and n is the number of the catalytic metal particle. By applying the carbon nanocapsule as a catalyst support, the catalytic behavior of the catalytic metal particle is specialized, the dispersion is improved, and the catalytic effect is enhanced.Type: GrantFiled: November 20, 2003Date of Patent: January 11, 2005Assignee: Industrial Technology Research InstituteInventors: Gan-Lin Hwang, Chao-Kang Chang
-
Patent number: 6759004Abstract: A metal injection-molding feedstock is heated and plasticized. Supercritical carbon dioxide is injected into the feedstock to form micropores when the pressure is reduced and a parts mold is filled. The micropores are retained when the green parts are debindered and sintered.Type: GrantFiled: June 6, 2000Date of Patent: July 6, 2004Assignee: Southco, Inc.Inventor: Ratnesh K. Dwivedi
-
Publication number: 20040126305Abstract: Methods of fabricating one-dimensional composite nanofiber on a template membrane with porous array by chemical or physical process are disclosed. The whole procedures are established under a base concept of “secondary template”. First of all, tubular first nanofibers are grown up in the pores of the template membrane. Next, by using the hollow first nanofibers as the secondary templates, second nanofibers are produced therein. Finally, the template membrane is removed to obtain composite nanofibers. Showing superior performance in weight energy density, current discharge efficiency and irreversible capacity, the composite nanofibers are applied to extensive scopes like thin-film battery, hydrogen storage, molecular sieving, biosensor and catalyst support except applications in lithium batteries.Type: ApplicationFiled: April 21, 2003Publication date: July 1, 2004Inventors: Jin-Ming Chen, Chien-Te Hsieh, Hsiu-Wen Huang, Yue-Hao Huang, Hung-Hsiao Lin, Mao-Huang Liu, Shih-Chieh Liao, Han-Chang Shih
-
Patent number: 6733737Abstract: An enhanced method for the post processing, i.e. oxidation or stabilization, of carbon materials including, but not limited to, carbon foams, carbon fibers, dense carbon-carbon composites, carbon/ceramic and carbon/metal composites, which method requires relatively very short and more effective such processing steps. The introduction of an “oxygen spill over catalyst” into the carbon precursor by blending with the carbon starting material or exposure of the carbon precursor to such a material supplies required oxygen at the atomic level and permits oxidation/stabilization of carbon materials in a fraction of the time and with a fraction of the energy normally required to accomplish such carbon processing steps. Carbon based foams, solids, composites and fiber products made utilizing this method are also described.Type: GrantFiled: August 29, 2001Date of Patent: May 11, 2004Assignee: Wright Materials Research Corp.Inventors: Seng Tan, Cher-Dip Tan
-
Patent number: 6696384Abstract: A new shaped activated carbon and the method of its manufacture are disclosed. The invention resides in the crosslinking of a polymeric cellulose, such as sodium carboxymethylcellulose (CMC), within the carbon bodies after they are shaped, employing the CMC as a binder for the activated carbon. The approach to attain product mechanical strength and water stability by crosslinking rather than high temperature heat treatment is not obvious from the prior art teaching. The crosslinking reaction occurs at temperatures below 270° C. In addition, this new binder technology produces shaped carbon bodies having key properties beyond the best level that has been accomplished with other binders.Type: GrantFiled: April 11, 2001Date of Patent: February 24, 2004Assignee: MeadWestvaco CorporationInventors: Peter D. A. McCrae, Tiejun Zhang, David R. B. Walker
-
Patent number: 6624108Abstract: Reticulated vitrified carbon compositions which contain particles of Cu, Sn, Zn, Pb, Ni, Fe, or alloys or mixtures thereof dispersed therein and reticulated vitreous carbon compositions wherein some or all of said metal or alloy particles have been converted into salts or mixtures of salts thereof. Processes for the preparation of such compositions.Type: GrantFiled: February 20, 2002Date of Patent: September 23, 2003Assignee: Regenesys Technologies LimitedInventors: Duncan Guy Clark, Mark Christopher Turpin, Ian Whyte, Graham Edward Cooley
-
Patent number: 6599856Abstract: A formed activated carbon has a Kiya crushing strength of 1 kg or more and a specific heat of 0.4 J/K·cc or more at 25° C.Type: GrantFiled: October 20, 2000Date of Patent: July 29, 2003Assignees: Tennex Corporation, Mitsubishi Chemical CorporationInventors: Masashi Uchino, Eiji Yamada, Hiroshi Yamashita, Kazushi Matsuura, Yoshitaka Takeda, Mitsuo Suzuki
-
Patent number: 6589904Abstract: The present invention provides an activated carbon produced by a process, which includes: activating a carbonaceous material, to obtain an activated carbonaceous material; and contacting the activated carbonaceous material with an acid. Another embodiment of the present invention provides an electrode for an electric double-layer capacitor, which includes the above-described activated carbon. Another embodiment of the present invention provides a filter, which includes the above-described activated carbon. Another embodiment of the present invention provides a shaped article, which includes the above-described activated carbon. Another embodiment of the present invention provides a method for producing activated carbon, which includes activating a carbonaceous material, to obtain an activated carbonaceous material; and contacting the activated carbonaceous material with an acid, to obtain the activated carbon.Type: GrantFiled: November 16, 2000Date of Patent: July 8, 2003Assignees: Kuraray Co., Ltd., Kuraray Chemical Co., Ltd.Inventors: Hideharu Iwasaki, Nozomu Sugo, Shushi Nishimura, Yoshifumi Egawa, Hajime Aoki
-
Patent number: 6573212Abstract: A new shaped activated carbon and the method of its manufacture are disclosed. The invention resides in the crosslinking of a polymeric cellulose, such as sodium carboxymethylcellulose (CMC), within the carbon bodies after they are shaped, employing the CMC as a binder for the activated carbon. The approach to attain product mechanical strength and water stability by crosslinking rather than high temperature heat treatment is not obvious from the prior art teaching. The crosslinking reaction occurs at temperatures below 270° C. In addition, this new binder technology produces shaped carbon bodies having key properties beyond the best level that has been accomplished with other binders.Type: GrantFiled: April 11, 2001Date of Patent: June 3, 2003Assignee: MeadWestvaco CorporationInventors: Peter D. A. McCrae, Tiejun Zhang, David R. B. Walker