With Organic Component Patents (Class 252/510)
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Patent number: 7807072Abstract: An inkjet printable electrode composition, an electrode including the electrode composition, and a secondary battery including the electrode. The inkjet printable electrode composition includes oxide, a conducting agent, a wetting agent, a binder and an aqueous solvent, in which the viscosity of the binder is in a range of 2 to 20 cps in a 1 wt % aqueous solution of the binder. The inkjet printing electrode composition includes a binder having an appropriate viscosity to allow ink to be easily ejected when the ink is inkjet-printed, and thus, a uniform, thin, and planarized pattern may be formed onto a collector by inkjet printing, without clogging of a nozzle, and thus electrode and secondary battery may be formed at low costs.Type: GrantFiled: May 12, 2008Date of Patent: October 5, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-man Choi, Moon-seok Kwon, Seung-sik Hwang, Han-su Kim, Jin-hwan Park
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Publication number: 20100237296Abstract: A method of creating graphene comprising the steps of dispersing graphene oxide into water to form a dispersion. Where the method further comprises adding a solvent to the dispersion to form a solution, and controlling a temperature of the solution to form graphene.Type: ApplicationFiled: March 20, 2009Publication date: September 23, 2010Inventor: S. Scott Gilje
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Patent number: 7799850Abstract: An epoxy composite material containing polyaniline/carbon black and preparation method thereof are disclosed. The epoxy composite material containing polyaniline/carbon black includes a plurality of polyaniline/carbon black composite with core-shell structure distributed in epoxy resin while polyaniline covers on surface of nanoscale carbon black to form the polyaniline/carbon black composite with core-shell structure. The polyaniline/carbon black composite with core-shell structure contains 10˜30 wt. % of nanoscale carbon black. A method for preparing an epoxy composite material containing polyaniline/carbon black includes steps of: adding a plurality of polyaniline/carbon black composites with core-shell structure into epoxy resin; and dispersing the plurality of polyaniline/carbon black composites with core-shell structure in the epoxy resin to produce the epoxy composite material containing polyaniline/carbon black being applied to conductive coating or microwave absorbing elements.Type: GrantFiled: October 30, 2008Date of Patent: September 21, 2010Assignee: Chung Shan Institute of Science and Technology, Armaments Bureau, M.N.D.Inventors: Cheng-Chien Yang, Kuo-Hui Wu, Wang Tsae Gu, Yuen-Hsin Peng
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Patent number: 7799246Abstract: The present invention relates to a process for preparing CNTs by bringing a carbon source into contact with a multivalent metal and/or metal-oxide-based catalyst deposited on an inorganic substrate having a BET specific surface area of greater than 50 m2/g. The CNTs obtained may be used as agents for improving the mechanical and electrical conductivity properties in polymeric compositions.Type: GrantFiled: February 3, 2006Date of Patent: September 21, 2010Assignee: Arkema FranceInventors: Serge Bordere, Daniel Cochard, Eric Dutilh, Patrice Gaillard, Dominique Plee
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Publication number: 20100233532Abstract: A composition for a battery containing an electroconductive assistant improves battery performance of a battery produced using this composition as a result of achieving dispersion stabilization without inhibiting electroconductivity of the electroconductive assistant.Type: ApplicationFiled: May 21, 2010Publication date: September 16, 2010Inventors: Naohisa Hirota, Tadashi Itabashi, Shinichiro Maki, Daisuke Nakasone
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Patent number: 7795331Abstract: A polyaniline/carbon black composite and a preparation method thereof are disclosed The polyaniline/carbon black composite is formed by polyaniline covering carbon black and is with core-shell structure while the polyaniline/carbon black composite contains 10˜30 wt. % of carbon black. The preparation method of polyaniline/carbon black composite includes the steps of: disperse carbon black into solution to form carbon black solution, add aniline into the carbon black solution to form a first solution; dissolve ammonium persulfate into acid aqueous solution to form a second solution; add the second solution to the first solution, after reaction, through filtering and grinding to produce polyaniline/carbon black composite.Type: GrantFiled: July 7, 2009Date of Patent: September 14, 2010Assignee: Chung Shan Institute of Science and Technology, Armaments Bureau, M.N.D.Inventors: Cheng-Chien Yang, Kuo-Hui Wu, Wang Tsae Gu, Yuen-Hsin Peng, Zhi-Han Liu
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Patent number: 7790062Abstract: A composition for forming an electron emission source includes a polymer comprising a carbon-based material; a vehicle; and a unit of formula (1) below: wherein A1 is a single bond, or a substituted or unsubstituted C1-C20 alkylene group; and Z1 and Z2 are each hydrogen, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C1-C20 alkoxy group, a carboxyl group, an —NR1R2 group, a part of a styrene group resin, or a part of a novolac resin, and R1 and R2 are each hydrogen, a substituted or unsubstituted C1-C20 alkyl group, or a substituted or unsubstituted C6-C30 aryl group. An electron emission source may be formed from the composition for forming an electron emission source, and an electron emission device and an electron emission display device may include the electron emission source. When the composition is used to form an electron emission source, the printability of the composition is improved and thus repeated printings can be carried out.Type: GrantFiled: April 12, 2007Date of Patent: September 7, 2010Assignee: Samsung SDI Co., Ltd.Inventor: Joo-Young Kim
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Patent number: 7790304Abstract: Components that include catalyst layers used in membrane electrode assemblies (MEAs), and methods of making such components are described. The catalyst layers yield more uniform current distributions across the active area of the MEA during operation. The catalyst layers may have a uniform catalyst activity profile of a less active catalyst to achieve more uniform current density over the MEA active area. The catalyst layers may have a variable activity profile, such as an activity profile with a varying slope, to compensate for the inherent nonlinearities of catalyst utilization during operation of an electrochemical fuel cell. Desired variable catalyst activity profiles may be achieved, for example, by varying the catalyst loading across the MEA from inlet to outlet ports or by varying the surface area of the catalyst loading or by varying the surface area of the catalyst support elements.Type: GrantFiled: September 13, 2005Date of Patent: September 7, 2010Assignee: 3M Innovative Properties CompanyInventors: Susan M. Hendricks, Thomas Herdtle, Mark K. Debe, Donald J. McClure
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Publication number: 20100213455Abstract: The invention relates to novel formulations comprising an organic semiconductor (OSC) and a conductive additive, to their use as conducting inks for the preparation of organic electronic (OE) devices, especially organic photovoltaic (OPV) cells, to methods for preparing OE devices using the novel formulations, and to OE devices and OPV cells prepared from such methods and formulations.Type: ApplicationFiled: September 19, 2008Publication date: August 26, 2010Applicants: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG, KORNAKA TECHNOL, INC.Inventors: Mark James, Iain McCulloch, Warren Duffy, Philip Edward May, Dan Walker, David P. Waller, Richard Kendall Childers, Sheila E. Rodman
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Publication number: 20100210185Abstract: The disclosure is directed to a processing fluid including at least 50 wt % of an aliphatic hydrocarbon having an average chain length of 8 to 16 carbons, 0.005 wt % to 10.0 wt % of Lewis active components, and not greater than 1.0 wt % water. The Lewis active components includes a Lewis acid and a Lewis base. The processing fluid has a conductivity of at least 10 nS/m and a Cannon viscosity of about 0.5 cp to about 5 cp at 25° C.Type: ApplicationFiled: April 30, 2010Publication date: August 19, 2010Applicant: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Douglas E. Ward, Jason A. Sherlock
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Patent number: 7767114Abstract: In a method for functionalizing a carbon nanotube surface, the nanotube surface is exposed to at least one vapor including at least one functionalization species that non-covalently bonds to the nanotube surface, providing chemically functional groups at the nanotube surface, producing a functionalized nanotube surface. A functionalized nanotube surface can be exposed to at least one vapor stabilization species that reacts with the functionalization layer to form a stabilization layer that stabilizes the functionalization layer against desorption from the nanotube surface while providing chemically functional groups at the nanotube surface, producing a stabilized nanotube surface. The stabilized nanotube surface can be exposed to at least one material layer precursor species that deposits a material layer on the stabilized nanotube surface.Type: GrantFiled: February 7, 2007Date of Patent: August 3, 2010Assignee: President and Fellows of Harvard CollegeInventors: Roy G. Gordon, Damon B. Farmer
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Patent number: 7767721Abstract: A soft agglomerate of copper oxide ultrafine particles which has an average primary particle diameter of not more than 100 nm and an average secondary particle diameter of not less than 0.2 ?m and of producing the soft agglomerate by (1) forming ultrafine copper oxide by reducing a cuprous carboxyl compound in an aqueous solution, with hydrazine and/or a hydrazine derivative, optionally with a base and optionally with organic compounds, such as alcohol (e.g., ethylene glycol or ethanol), ether, ester or amide; and simultaneously or separately applying an agglomerating force, e.g., agglomerating agent; to produce copper oxide soft agglomerate. Alternatively (2), forming a colloidal dispersion of cuprous oxide ultrafine particles by heating and reducing at least one copper compound (e.g., copper carboxyl, copper alkoxy and copper diketonate compound) at a temperature of not lower than 160 ° C.Type: GrantFiled: December 2, 2003Date of Patent: August 3, 2010Assignee: Asahi Kasei Kabushiki KaishaInventors: Mutsuhiro Maruyama, En-Hai Sun
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Publication number: 20100187484Abstract: A method of making a mechanically robust, electrically conductive ultralow-density carbon nanotube-based aerogel, including the steps of dispersing nanotubes in an aqueous media or other media to form a suspension, adding reactants and catalyst to the suspension to create a reaction mixture, curing the reaction mixture to form a wet gel, drying the wet gel to produce a dry gel, and pyrolyzing the dry gel to produce the mechanically robust, electrically conductive ultralow-density carbon nanotube-based aerogel. The aerogel is mechanically robust, electrically conductive, and ultralow-density, and is made of a porous carbon material having 5 to 95% by weight carbon nanotubes and 5 to 95% carbon binder.Type: ApplicationFiled: January 5, 2010Publication date: July 29, 2010Inventors: Marcus A. Worsley, Sergei O. Kucheyev, Theodore F. Baumann, Joe H. Satcher, JR., Alex V. Hamza
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Patent number: 7763187Abstract: Conductive silver ink is reinforced using carbon nanotubes. Carbon nanomaterials are stabilized and uniformly dispersed in a solvent and mechanically mixed with conductive silver ink. The reinforcement material bridges the gap between separated silver flakes in the conductive silver ink. The carbon nanotubes reinforced conductive silver ink exhibits superior performance over unreinforced silver ink in its mechanical, electrical and thermal properties without significantly greater weight.Type: GrantFiled: August 23, 2007Date of Patent: July 27, 2010Assignee: Oceanit Laboratories, Inc.Inventors: Vinod P. Veedu, Christopher J. Sullivan
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Publication number: 20100176351Abstract: Disclosed are compositions comprising suspensions of graphite and/or graphene materials in a liquid, for example, comprising water, a first organic solvent, and optionally a second organic solvent. Also disclosed are methods of making and using the compositions.Type: ApplicationFiled: January 15, 2010Publication date: July 15, 2010Inventors: Rodney S. Ruoff, Sungjin Park
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Publication number: 20100176350Abstract: An electrically conductive cellulose composite includes a cellulose matrix and an electrically conductive carbonaceous material incorporated into the cellulose matrix. The electrical conductivity of the cellulose composite is at least 10 ?S/cm at 25° C. The composite can be made by incorporating the electrically conductive carbonaceous material into a culture medium with a cellulose-producing organism, such as Gluconoacetobacter hansenii. The composites can be used to form electrodes, such as for use in membrane electrode assemblies for fuel cells.Type: ApplicationFiled: March 22, 2010Publication date: July 15, 2010Applicant: UT-Battelle, LLCInventors: BARBARA R. EVANS, Hugh M. O'Neill, Jonathan Woodward
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Publication number: 20100179054Abstract: The present invention generally provides compositions including carbon-based nanostructures, catalyst materials and systems, and related methods. In some cases, the present invention relates to carbon-based nanostructures comprising a high density of charged moieties. Methods of the invention may provide the ability to introduce a wide range of charged moieties to carbon-based nanostructures. The present invention may provide a facile and modular approach to synthesizing molecules that may be useful in various applications including sensors, catalysts, and electrodes.Type: ApplicationFiled: December 11, 2009Publication date: July 15, 2010Applicant: Massachusetts Institute of TechnologyInventors: Timothy M. Swager, Jan Schnorr
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Patent number: 7754107Abstract: A carbon nanotube is described, to which quantum dots are attached through non-covalent bonding via linking molecules bonded to the quantum dots. A method of visualizing a carbon nanotube is also described, wherein quantum dots are attached to the carbon nanotube through non-covalent bonding via linking molecules bonded to the quantum dots, and then the quantum dots are made emit light. This invention allows carbon nanotubes, even those in a wet condition, to be visualized by a simple fluorescent optical microscope. Thereby, the difficulties on preparing specimens and the need of sophisticated instruments can be reduced. This invention also exhibits great potential for the application of carbon nanotubes under a wet condition.Type: GrantFiled: January 16, 2008Date of Patent: July 13, 2010Assignee: National Tsing Hua UniversityInventors: Ning-Yu Wu, Yi-Yang Chen, Tri-Rung Yew
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Patent number: 7749407Abstract: There is provided a transparent conductor including conductive nanoparticles and at least one of (a) a fluorinated acid polymer and (b) a semiconductive polymer doped with a fluorinated acid polymer. The nanoparticles are carbon nanoparticles, metal nanoparticles, or combinations thereof. The carbon and metal nanoparticles are selected from nanotubes, fullerenes, and nanofibers. The acid polymers are fluorinated or highly fluorinated and have acidic groups including carboxylic acid groups, sulfonic acid groups, sulfonimide groups, phosphoric acid groups, phosphonic acid groups, and combinations thereof. The semiconductive polymers comprise homopolymers and copolymers derived from monomers selected from substituted and unsubstituted thiophenes, pyrroles, anilines, and cyclic heteroaromatics, and combinations of those. The compositions may be used in organic electronic devices (OLEDs).Type: GrantFiled: June 28, 2006Date of Patent: July 6, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Che-Hsiung Hsu, Hjalti Skulason
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Patent number: 7744844Abstract: The present invention involves the interaction of radiation with functionalized carbon nanotubes that have been incorporated into various host materials, particularly polymeric ones. The present invention is directed to chemistries, methods, and apparatuses which exploit this type of radiation interaction, and to the materials which result from such interactions. The present invention is also directed toward the time dependent behavior of functionalized carbon nanotubes in such composite systems.Type: GrantFiled: June 27, 2008Date of Patent: June 29, 2010Assignee: William Marsh Rice UniversityInventors: Enrique V. Barrera, Richard Wilkins, Meisha Shofner, Merlyn X. Pulikkathara, Ranjii Vaidyanathan
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Patent number: 7736543Abstract: Use of an exothermic additive in a polyphenylene sulfide compound results in an extruded or molded thermoplastic article that is electrically conductive and exothermic when connected to a source of electrical energy. Electronic devices benefit from these articles, particularly where ink must be melted for imaging of commercial graphics on a substrate.Type: GrantFiled: January 31, 2007Date of Patent: June 15, 2010Assignee: Polyone CorporationInventor: Roger W. Avakian
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Patent number: 7736538Abstract: The invention relates to a mixture for applying a polymer, non-corrosive, electroconductive coating which can be shaped in a low-abrasive manner, to a base. Said mixture contains at least one substance A in the form of electroconductive hard particles, at least one substance B in the form of very soft or soft, inorganic, sliding, electroconductive or semiconductive particles, and/or at least one substance C in the form of metallic, soft or hard, electroconductive or semiconductive particles and/or soot, and optionally other constituents such as an anticorrosion pigment D, the sum of the parts by weight of the inorganic sliding particles B and the metallic particles and/or soot C amounting to between 0.25 and 99.5% of the parts by weight of the water-insoluble or only slightly water-soluble pigmentation S (A+B+C), and the size of the electroconductive hard particles A amounting to less than 10 ?m in relation to the particle size transfer value d99.Type: GrantFiled: April 17, 2003Date of Patent: June 15, 2010Assignee: Chemetall GmbHInventors: Georg Gros, Norbert Maurus, Marcus Schinzel
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Patent number: 7736691Abstract: The present invention relates to functional organic particles having functional nanoparticles dispersed in an organic polymeric matrix, wherein the distribution of the functional nanoparticles is increased in the direction toward increasing the particle diameter from the center of the functional organic particles, and to a method for preparing the same.Type: GrantFiled: February 21, 2008Date of Patent: June 15, 2010Assignee: LG Chem, Ltd.Inventors: Chang Soon Lee, Woong Ki Lee, Woo Cheul Jung
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Publication number: 20100140561Abstract: Nicotinamide and/or a compound which is chemically combined with nicotinamide may be used as a carbon nanotube (“CNT”) n-doping material. CNTs n-doped with the CNT n-doping material may have long-lasting doping stability in the air without de-doping. Further, CNT n-doping state may be easily controlled when using the CNT n-doping material. The CNT n-doping material and/or CNTs n-doped with the CNT n-doping material may be used for various applications.Type: ApplicationFiled: January 8, 2009Publication date: June 10, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jaeyoung CHOI, Hyeon Jin SHIN, Seonmi YOON, Boram KANG, Young Hee LEE, Un Jeong KIM
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Publication number: 20100136224Abstract: The present invention relates to purified transparent carbon nanotube (CNT) conductive layers or coatings that comprise at least one additional material to form a composite. Adding a material to the CNT layer or coating improves conductivity, transparency, and/or the performance of a device comprising a transparent conductive CNT layers or coating This composite may be used in photovoltaic devices, OLEDs, LCD displays, or touch screens.Type: ApplicationFiled: March 13, 2007Publication date: June 3, 2010Inventors: David Alexander Britz, David H. Landis, JR., Paul J. Glatkowski
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Publication number: 20100133480Abstract: A compound containing at least two pyridinium derivatives in its molecular structure and being in a reduced form thereof may be used as a CNT n-doping material. The compound may donate electrons spontaneously to CNTs to n-dope the CNTs, while being oxidized into its stable state. An n-doped CNT that is doped with the CNT n-doping material may maintain a stable n-doped state for a long time without being dedoped even in the air and/or water. Further, the n-doped state may be easily controlled when using the CNT n-doping material.Type: ApplicationFiled: May 7, 2009Publication date: June 3, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyeon Jin SHIN, Young HEE LEE, Jaeyoung CHOI, Seonmi YOON, Soo Min KIM
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Publication number: 20100117034Abstract: Example embodiments of the present invention relate to an organic semiconductor material using carbon nanotubes having increased semiconductivity, an organic semiconductor thin film using the same and an organic semiconductor device employing the thin film. By using the organic semiconductor material according to example embodiments of the present invention, a room-temperature wet process may be applied and a high-performance organic semiconductor device capable of simultaneously exhibiting increased electrical properties is provided.Type: ApplicationFiled: August 30, 2006Publication date: May 13, 2010Inventors: Kook Min Han, Jae Young Choi, Seon Mi Yoon, Sang Yoon Lee, Jong Min Kim, Byung Ki Kim
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Patent number: 7713448Abstract: Carbon nanomaterials are stabilized and uniformly dispersed in a liquid such as water using a simple procedure. Methylcellulose is added to hot water where it separates and expands with a temperature of about 80-90 degree Celsius. Methylcellulose swiftly dissolves when the water cools down. Carbon nanomaterials are dispersed in a solvent and sonicated. This nanomaterial dispersed solvent is then added to the methylcellulose dispersed water and mechanically stirred. The resulting uniform mixture is up to 90% by weight nanomaterials and is stable for months.Type: GrantFiled: September 25, 2007Date of Patent: May 11, 2010Assignee: Oceanit Laboratories, Inc.Inventor: Vinod P. Veedu
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Patent number: 7713315Abstract: The invention provides mineral oil distillates having a water content of less than 150 ppm and a conductivity of at least 50 pS/m, which comprise from 0.1 to 200 ppm of at least one alkylphenol-aldehyde resin and from 0.1 to 200 ppm of at least one nitrogen-containing polymer.Type: GrantFiled: July 28, 2006Date of Patent: May 11, 2010Assignee: Clariant Produkte (Deutschland) GmbHInventors: Matthias Krull, Werner Reimann
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Patent number: 7708909Abstract: The present invention relates generally to thermally-conductive pastes for use with integrated circuits, and particularly, but not by way of limitation, to self-orienting microplates of graphite.Type: GrantFiled: February 28, 2008Date of Patent: May 4, 2010Assignee: International Business Machines CorporationInventors: Gareth Hougham, Paul A. Lauro, Brian R. Sundlof, Jeffrey D. Gelorme
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Patent number: 7709133Abstract: An electrically conductive cellulose composite includes a cellulose matrix and an electrically conductive carbonaceous material incorporated into the cellulose matrix. The electrical conductivity of the cellulose composite is at least 10 ?S/cm at 25° C. The composite can be made by incorporating the electrically conductive carbonaceous material into a culture medium with a cellulose-producing organism, such as Gluconoacetobacter hansenii. The composites can be used to form electrodes, such as for use in membrane electrode assemblies for fuel cells.Type: GrantFiled: June 15, 2005Date of Patent: May 4, 2010Assignee: UT-Battelle, LLCInventors: Barbara R. Evans, Hugh M. O'Neill, Jonathan Woodward
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Publication number: 20100102299Abstract: The present invention provides an organic semiconductor composite containing a certain thiophene compound and carbon nanotubes, which can be formed into a film by a coating process such as an inkjet process, has high charge mobility and can maintain a high on/off ratio even in air, an organic transistor material and an organic field effect transistor.Type: ApplicationFiled: January 25, 2008Publication date: April 29, 2010Applicant: TORAY INDUSTRIES, INC.Inventors: Seiichiro Murase, Yukari Jo, Jun Tsukamoto, Junji Mata
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Patent number: 7704415Abstract: The present invention discloses a composite material with electron-donating and electron-accepting property is disclosed, wherein the composite material comprises a plurality of nanoparticles with electron-accepting property, a plurality of diblock copolymers, and a bi-continuous structure. Each diblock copolymer comprises a first polymer chain with electron-donating property and a second polymer chain connected with the mentioned nanoparticles. Additionally, the bi-continuous structure containing a first domain and a second domain, wherein the bi-continuous structure is self-assembled from the diblock copolymers, wherein the first polymer chain is in the first domain, and the second polymer chain and the plurality of nanoparticles are in the second domain. Furthermore, this invention also discloses methods for forming the composite material and their applications.Type: GrantFiled: December 12, 2005Date of Patent: April 27, 2010Assignee: National Taiwan UniversityInventors: Wei-Fang Su, Chi-An Dai, Chun-Chih Ho
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Patent number: 7699965Abstract: Proposed is a zinc oxide-based transparent conductor characterized in having zinc oxide as its primary component, containing an element at 1 to 10 atomic % which has a smaller ion radius than zinc in the zinc oxide and serves as an n-type dopant for the zinc oxide, and containing nitrogen in which the atomicity ratio of nitrogen in relation to the n-type dopant (nitrogen/n-type dopant) is 0.3 to 0.6. In the development of a transparent conductor that does not contain In, which is an expensive raw material with concern of resource depletion, the limit of the conventional development technique known as the single-dopant method is exceeded, a guide to dopant selection as a specific means for realizing the co-doping theory is indicated, and a transparent conductor having low resistivity is provided.Type: GrantFiled: February 19, 2007Date of Patent: April 20, 2010Assignee: Nippon Mining & Metals Co., Ltd.Inventors: Masakatsu Ikisawa, Masataka Yahagi
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Publication number: 20100090173Abstract: A process is disclosed which produces a negative electrode material for lithium-ion secondary batteries that has a small irreversible capacity and a large reversible capacity by suppressing exposure of an active graphite surface due to grinding. The process includes melt-mixing graphite particles, pitch having a quinoline insoluble content of 0.3% or less and a fixed carbon content of 50% or more, and a fusible organic substance that volatilizes by 50% or more when heated to 400° C. in the air and has a residual carbon content of 3% or less when heated to 800° C. in an inert atmosphere, carbonizing the mixture by firing, graphitizing the carbonized product, and grinding the graphitized product. It is preferable that the graphite particles and the pitch be mixed in such a ratio that the amount of the pitch is 25 to 40 parts by weight based on 100 parts by weight of the graphite particles, and a formed product obtained by forming mixture be carbonized by firing, graphitized, and ground.Type: ApplicationFiled: December 8, 2006Publication date: April 15, 2010Inventors: Mitsuaki Dohzono, Masatake Yamamoto, Satoshi Hiugano, Kentaro Takizawa
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Patent number: 7686981Abstract: A method for preparing a dispersion of conductive carbon materials is provided. The method includes dissolving a sulfonated chitosan in an aqueous solution, wherein the amount of the sulfonated chitosan of the solution is about 0.1-3 wt %. Then, a conductive carbon material is added into the solution, and the conductive carbon material in the solution is dispersed across the solution. The conductive carbon material can be carbon black or carbon nanotube.Type: GrantFiled: December 30, 2008Date of Patent: March 30, 2010Assignee: Taiwan Textile Research InstituteInventors: Chan-Yi Yang, Jui-Sheng Lee
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Patent number: 7682527Abstract: A nanoparticle coated with a semiconducting material and a method for making the same. In one embodiment, the method comprises making a semiconductor coated nanoparticle comprising a layer of at least one semiconducting material covering at least a portion of at least one surface of a nanoparticle, comprising: (A) dispersing the nanoparticle under suitable conditions to provide a dispersed nanoparticle; and (B) depositing at least one semiconducting material under suitable conditions onto at least one surface of the dispersed nanoparticle to produce the semiconductor coated nanoparticle. In other embodiments, the nanoparticle comprises a fullerene. Further embodiments include the semiconducting material comprising CdS or CdSe.Type: GrantFiled: August 6, 2007Date of Patent: March 23, 2010Assignee: William Marsh Rice UniversityInventors: Andrew R. Barron, Dennis J. Flood, John Ryan Loscutova
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Patent number: 7666327Abstract: A high performance multifunctional cementitious nanocomposite material is made by adding a nano admixture to the water used in a conventional cementitious material manufacturing process. The nano admixture is made by dispersing nanomaterials in a solvent and sonicating the mixture, adding a hydrophilic emulsifier, thickener, additive or cellulose derived compound to hot water, where it separates and expands, cooling the water, causing the compound to dissolve, and then adding the solvent and nanomaterial mixture to the water and mechanically mixing. The contact between the nanomaterials and the surrounding matrix changes with applied stress, affecting the volume electrical response of the finished nanocomposite material. By measuring the electrical resistance of the material, its structural health, as well as the stress applied to it, can be monitored. A bridge made with the material is monitored for structural integrity and for the weight, speed, and location of traffic over the bridge.Type: GrantFiled: May 22, 2008Date of Patent: February 23, 2010Assignee: Oceanit Laboratories, Inc.Inventor: Vinod P. Veedu
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Publication number: 20100033902Abstract: A composite suitable as a charge-storing material for electrochemical capacitors contains carbon nanotubes and a carbonaceous materiel. The carbonaceous material is the carbonization residue of a biopolymer or seaweed rich in heteroatoms. Wherein the carbonization residue of the biopolymer or seaweed is electrically conductive and has a heteroatom content as detected by XPS of at least 6%.Type: ApplicationFiled: August 17, 2009Publication date: February 11, 2010Applicants: SGL CARBON SE, CENTRE NATIONALE DE LA RECHERCHE SCIENTIFIQUE, L'UNIVERSITÉ D'ORLÉANSInventors: Martin Cadek, Mario Wachtler, Encarnacion Raymundo-Pinero, Francois Beguin
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Publication number: 20100035186Abstract: Techniques for manufacturing a graphene structure solution and a graphene device are provided. A uniform graphene nanostructure solution is produced by applying anisotropic etching on a multi-layered graphene using an oxide nanowire as a mask. A graphene device is manufactured by dipping a substrate with a pattern of a molecule layer in a graphene nanostructure solution so that graphenes are aligned on the substrate with the pattern.Type: ApplicationFiled: September 15, 2008Publication date: February 11, 2010Applicant: Seoul National University Research & Development Business Foundation (SNU R&DB FOUNDATION)Inventors: Seunghun Hong, Juntae Koh
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Publication number: 20100028773Abstract: A composition for a battery containing an electroconductive assistant improves battery performance of a battery produced using this composition as a result of achieving dispersion stabilization without inhibiting electroconductivity of the electroconductive assistant.Type: ApplicationFiled: March 4, 2008Publication date: February 4, 2010Inventors: Naohisa Hirota, Tadashi Itabashi, Shinichiro Maki, Daisuke Nakasone
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Patent number: 7651639Abstract: The conductive polymer of the present invention is prepared by means of oxidation polymerization. On the matrix of the conductive polymer, at least one organic sulfonate formed by an anion of an organic sulfonic acid and a cation of other than transition metals is coated. Alternatively, in the matrix of the conductive polymer, at least one organic sulfonate formed by an anion of an organic sulfonic acid and a cation of other than transition metals is included. The conductive polymer of the present invention is excellent in the conductivity, heat resistance and moisture resistance. By using it as a solid electrolyte, a reliable solid electrolytic capacitor can be prepared which is unlikely to decrease the properties when being kept in a hot and humid condition.Type: GrantFiled: November 15, 2007Date of Patent: January 26, 2010Assignee: Tayca CorporationInventors: Masaaki Tozawa, Ryosuke Sugihara
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Patent number: 7648653Abstract: A conductive polyoxymethylene composition comprising a first polyoxymethylene component, a conductive filler, at least one boron oxyacid or salt thereof, and at least one first polyamide oligomer is disclosed. The first polyoxymethylene component comprises a copolymer of oxymethylene, a homopolymer of oxymethylene, and mixtures thereof, and is present in an amount of from about 50 to about 99.5 weight percent based on the total weight of the composition. The conductive filler is present in an amount of from about 0.1 to about 40 percent by weight based on the total weight of the composition. The boron oxyacid or salt thereof and the first polyamide oligomer stabilize the composition such that articles formed therefrom exhibit reduced or eliminated deterioration. Further, when exposed to higher temperature, pressure, and high-fuel content environments, the articles maintain the desired physical properties.Type: GrantFiled: January 12, 2006Date of Patent: January 19, 2010Assignee: BASF SEInventors: David C. Krueger, Majiid Khalatbri, Wolfgang Heim, Theodore Zavadil
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Publication number: 20100006152Abstract: A method of producing a photo-voltaic device comprising the steps of: synthesising carbon nanotubes; adapting the synthesised carbon nanotubes to provide a surface defect such as to create an effective band gap; selecting an organic semiconductor material which facilitates the efficient energy transfer between carbon nanotubes and the organic material, wherein the organic material is selected such that the energy band gap formed between the HOMO and LUMO energy levels lies within the effective band gap of the adapted carbon nanotubes; combining the adapted carbon nanotubes and the selected organic material to form a composite material.Type: ApplicationFiled: December 22, 2006Publication date: January 14, 2010Inventors: Ross Andrew Hatton, Sembukutiarachilage Ravi Silva, John Simon Henley
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Patent number: 7645399Abstract: An electrical component including an electrically conductive composition including a pyrrolized carbon-based material coated with a conductive polymer is disclosed.Type: GrantFiled: May 31, 2005Date of Patent: January 12, 2010Assignee: Xerox CorporationInventors: Ihor W. Tarnawskyj, Joseph A. Swift
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Patent number: 7641883Abstract: The separation of carbon nanotubes into metallic carbon nanotubes and semiconducting carbon nanotubes is made to be possible simultaneously with the dispersion of the carbon nanotubes by using viologen.Type: GrantFiled: April 4, 2008Date of Patent: January 5, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Hyeon Jin Shin, Seonmi Yoon, Jaeyoung Choi, Seong Jae Choi, YoungHee Lee, JungJun Bae
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Publication number: 20090311554Abstract: Provided are a carbon nanotube dispersing agent, a carbon nanotube composite, a carbon nanotube film, and a method for manufacturing the carbon nanotube film. The carbon nanotube dispersing agent has at least one chromophore including at least one aromatic carbon ring, and has a plane structure.Type: ApplicationFiled: January 4, 2008Publication date: December 17, 2009Inventors: Sang Keun Oh, Kyoung-Hwa Song, Da Jeong Jeong
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Patent number: 7632373Abstract: An electrical device includes two electrodes and a conductive polymer layer, containing a mixture of a polymer and a conductive filler, separating the electrodes. A oxygen barrier material containing a thermosetting polymer component is present on the exposed surface of the conductive polymer layer that is not in contact with the laminar electrodes. The oxygen barrier material may be a polyamine-polyepoxide material, and may provide for acceptable barrier properties over a wide range of humidity levels.Type: GrantFiled: April 2, 2008Date of Patent: December 15, 2009Assignee: Tyco Electronics CorporationInventor: Matthew P. Galla
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Publication number: 20090272967Abstract: A composite material includes a carbon nanotube, and plural pentacene molecules bonded to the carbon nanotube. A method of forming the composite layer, includes depositing on a substrate a dispersion of soluble pentacene precursor and carbon nanotubes, heating the dispersion to remove solvent from the dispersion, heating the substrate to convert the pentacene precursor to pentacene and form the carbon nanotube-pentacene composite layer.Type: ApplicationFiled: April 30, 2008Publication date: November 5, 2009Applicant: International Business Machines CorporationInventors: Ali Afzali-Ardakani, Cherie R. Kagan, Rudolf M. Tromp
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Patent number: 7588826Abstract: Process for preparing by crushing, a homogenous mixture of particles containing a conductive nucleus including at least one graphite and continuously or discontinuously coated with at least one material that is different from the one constituting the nucleus, the size of the particles of the nucleus being larger than the particles used for coating the nuclei by crushing the particles together. The mixtures of particles obtained show electrochemical and mechanical properties that enable them to be advantageously used in electrochemical batteries and in paints.Type: GrantFiled: October 23, 2003Date of Patent: September 15, 2009Assignee: Hydro-QuebecInventors: Karim Zaghib, Patrick Charest, Abdelbast Guerfi, Michel Perrier, Kimio Kinoshita