Aluminum Compound Patents (Class 252/508)
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Patent number: 8227685Abstract: A graphene sheet including an intercalation compound and 2 to about 300 unit graphene layers, wherein each of the unit graphene layers includes a polycyclic aromatic molecule in which a plurality of carbon atoms in the polycyclic aromatic molecule are covalently bonded to each other; and wherein the intercalation compound is interposed between the unit graphene layers.Type: GrantFiled: February 17, 2010Date of Patent: July 24, 2012Assignee: Samsung Electronics Co., Ltd.Inventor: Jae-young Choi
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Publication number: 20120178002Abstract: Electrodes and production and use thereof Electrodes, comprising (A) a solid medium through which gas can diffuse, (B) at least one electrically conductive, carbonaceous material, (C) at least one organic polymer, (D) at least one compound of the general formula (I) M1aM2bM3cM4dHeOf ??(I) in particulate form, where the variables are each defined as follows: M1 is selected from Mo, W, V, Nb and Sb, M2 is selected from Fe, Ag, Cu, Ni, Mn and lanthanoids, M3 is selected from B, C, N, Al, Si, P and Sn, M4 ist selected from Li, Na, K, Rb, Cs, NH4, Mg, Ca and Sr, a is in the range from 1 to 3, b is in the range from 0.1 to 10, c is in the range from zero to one, d is in the range from zero to one, e is in the range from zero to 5, f is in the range from 1 to 28, and wherein compound of the general formula (I) has a BET surface area in the range from 1 to 300 m2/g.Type: ApplicationFiled: June 21, 2011Publication date: July 12, 2012Applicant: BASF SEInventors: Arnd GARSUCH, Alexander PANCHENKO, Andrey KARPOV, Rüdiger SCHMIDT, Sabine HUBER
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Publication number: 20120146248Abstract: A resin composition for encapsulation, which contains 100 parts by weight of a synthetic resin, 10 to 500 parts by weight of a carbon precursor having a volume resistivity of 102 to 1010 ?·cm, 0 to 60 parts by weight of a conductive filler having a volume resistivity lower than 102 ?·cm and 100 to 1,500 parts by weight of an other inorganic filler.Type: ApplicationFiled: February 15, 2012Publication date: June 14, 2012Inventor: Naomitsu NISHIHATA
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Publication number: 20120146464Abstract: The present invention provides a flexible conductive crosslinked body excellent in durability having a small influence of a reaction residue after the crosslinking on an object to which the conductive crosslinked body adheres, and a production process of the flexible conductive crosslinked body. The conductive crosslinked body is synthesized from a conductive composition containing a rubber polymer, an organic metal compound, and a conducting agent and has a crosslinked structure. The production process of the conductive crosslinked body includes: a mixed solution preparing step for preparing a mixed solution in which the rubber polymer, the conducting agent, and the organic metal compound are mixed in a solvent capable of dissolving the rubber polymer and capable of chelating the organic metal compound; and a crosslinking step for removing the solvent from the mixed solution to allow a crosslinking reaction to proceed.Type: ApplicationFiled: February 22, 2011Publication date: June 14, 2012Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Jun Kobayashi, Hitoshi Yoshikawa, Wataru Takahashi
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Publication number: 20120126182Abstract: A lithium/fluorinated carbon (Li/CFx) battery having a composite cathode including an electroactive cathode material, a non-electroactive additive, a conductive agent, and a binder. The electroactive cathode material is a single fluorinated carbon having a general formula of CFx, whereby x is an averaged value ranging from about 0.5 to about 1.2. The non-electroactive additive is at least one or a mixture of two or more oxides selected from the group comprising Mg, B, Al, Si, Cu, Zn, Y, Ti, Zr, Fe, Co, or Ni. The conductive agent is selected from the group comprising carbon, metals, and mixtures thereof. Finally, the binder is an amorphous polymer selected from the group comprising fluorinated polymers, ethylene-propylene-diene (EPDM) rubbers, styrene butadiene rubbers (SBR), poly (acrylonitrile-methyl methacrylate), carboxymethyl celluloses (CMC), and polyvinyl alcohol (PVA).Type: ApplicationFiled: August 10, 2011Publication date: May 24, 2012Applicant: U.S. Government as reperesented by the Secretary of the ArmyInventors: SHENGSHUI ZHANG, DONALD L. FOSTER, JEFFERY WOLFENSTINE, JEFFERY A. READ
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Publication number: 20120107683Abstract: A composite of electrode active material including aggregates formed by self-assembly of electrode active material nanoparticles and carbon nanotubes, and a fabrication method thereof are disclosed. This composite is in the form of a network in which at least some of the carbon nanotubes connect two or more aggregates that are not directly contacting each other, creating an entangled structure in which a plurality of aggregates and a plurality of carbon nanotube strands are intertwined. Due to the highly conductive properties of the carbon nanotubes in this composite, charge carriers can be rapidly transferred between the self-assembled aggregates. This composite may be prepared by preparing a dispersion in which the nanoparticles and/or carbon nanotubes are dispersed without any organic binders, simultaneously spraying the nanoparticles and the carbon nanotubes on a current collector through electrospray, and then subjecting the composite material formed on the current collector to a heat treatment.Type: ApplicationFiled: October 20, 2011Publication date: May 3, 2012Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Il Doo KIM, Jin Hoon CHOI
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Publication number: 20120104557Abstract: A method for manufacturing a group III nitride crystal includes a step of mixing a group III source material and ammonia in a reactor including quartz, and growing a group III nitride crystal on a support substrate by a vapor deposition. The group III source material is an organic metal source material containing Al. The organic metal source material is mixed with a hydrogen halide gas and the mixture of the organic metal source material and the hydrogen halide gas is supplied to the reactor.Type: ApplicationFiled: August 24, 2011Publication date: May 3, 2012Applicant: Hitachi Cable, Ltd.Inventors: Takehiro Yoshida, Yuichi Oshima, Tadayoshi Tsuchiya
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Publication number: 20120064229Abstract: A positive electrode for an electrochemical cell. The positive electrode includes a current collector that is coated with a slurry comprising a positive active material, a water-soluble polymer which acts as a binder and pH adjuster, a conductive additive and water. The positive active slurry was then coated on to the current collector and dried.Type: ApplicationFiled: May 10, 2011Publication date: March 15, 2012Applicant: INTERNATIONAL BATTERY, INC.Inventors: Milburn Ebenezer Jacob Muthu, Monira Mamari, Chester Crane
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Patent number: 8128844Abstract: Disclosed herein are an electrically conductive thermoplastic resin composition and a plastic article. The electrically conductive thermoplastic resin composition comprises about 80 to about 99% by weight of a thermoplastic resin, about 0.1 to about 10% by weight of carbon nanotubes and about 0.1 to about 10% by weight of an organo nanoclay.Type: GrantFiled: June 26, 2009Date of Patent: March 6, 2012Assignee: Cheil Industries Inc.Inventors: Byeong Yeol Kim, Young Sil Lee, Young Kyu Chang
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Patent number: 8119288Abstract: The present invention provides an exfoliated graphite-based hybrid material composition for use as an electrode, particularly as an anode of a lithium ion battery. The composition comprises: (a) micron- or nanometer-scaled particles or coating which are capable of absorbing and desorbing alkali or alkaline metal ions (particularly, lithium ions); and (b) exfoliated graphite flakes that are substantially interconnected to form a porous, conductive graphite network comprising pores, wherein at least one of the particles or coating resides in a pore of the network or attached to a flake of the network and the exfoliated graphite amount is in the range of 5% to 90% by weight and the amount of particles or coating is in the range of 95% to 10% by weight. Also provided is a lithium secondary battery comprising such a negative electrode (anode). The battery exhibits an exceptional specific capacity, excellent reversible capacity, and long cycle life.Type: GrantFiled: November 5, 2007Date of Patent: February 21, 2012Assignee: Nanotek Instruments, Inc.Inventors: Aruna Zhamu, Bor Z. Jang
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Publication number: 20120028117Abstract: The present invention relates to a positive electrode composite material for Li-ion battery, to the preparation method thereof, and to the use thereof in a Li-ion battery. The composite material according to the invention includes: a) at least one conductive additive including carbon nanotubes at a content between 1 and 2.5 wt %, preferably between 1.5 and 2.2 wt %, relative to the total weight of the composite material; b) an active electrode material capable of reversibly forming an insertion compound with lithium, having an electrochemical potential greater than 2V relative to the Li/Li+ couple, and selected from among compounds having LiMv(XOz)n polyanionic framework; and c) a polymer binder. The positive electrode composite material according to the invention imparts, to the Li-ion battery incorporating said electrode, high support for the cycling capacity, weak internal resistance, and strong charge and discharge kinetics for the moderate cost of the stored KW.Type: ApplicationFiled: March 18, 2010Publication date: February 2, 2012Applicants: Centre National De La Recherche Scientifique, Arkema FranceInventors: Dominique Plee, Bernard Lestriez, Sabrina Desaever, Dominique Guyomard
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Patent number: 8088306Abstract: Disclosed herein are an electrically conductive thermoplastic resin composition and a plastic article including the same. The electrically conductive thermoplastic resin composition comprises about 80 to about 99.9 parts by weight of a thermoplastic resin, about 0.1 to about 10 parts by weight of carbon nanotubes, about 0.1 to about 10 parts by weight of an impact modifier, based on a total of about 100 parts by weight of the thermoplastic resin and the carbon nanotubes, and about 0.1 to about 10 parts by weight of conductive metal oxide, based on a total of about 100 parts by weight of the thermoplastic resin and the carbon nanotubes.Type: GrantFiled: June 22, 2009Date of Patent: January 3, 2012Assignee: Cheil Industries Inc.Inventors: Tae Kyun Kim, Young Sil Lee, Young Kyu Chang
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Publication number: 20110292570Abstract: The invention relates to a process for coating nanoparticles with graphene, comprising the steps of (a) providing a suspension comprising a suspension medium and nanoparticles with positive surface charge, (b) adding graphene oxide particles to the suspension from step (a), the graphene oxide particles accumulating on the nanoparticles, and (c) converting the graphene oxide particles accumulated on the nanoparticles to graphene, to graphene-coated nanoparticles comprising at least one metal, a semimetal, a metal compound and/or a semimetal compound, and to the use of these graphene-coated nanoparticles in electrochemical cells and supercapacitors, and to supercapacitors and electrochemical cells comprising these nanoparticles.Type: ApplicationFiled: May 13, 2011Publication date: December 1, 2011Applicants: Max-Planck-Gesellschaft zur Foerd. der Wisse. e. V., BASF SEInventors: Sorin IVANOVICI, Shubin Yang, Xinliang Feng, Klaus Müllen
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Publication number: 20110287316Abstract: The invention relates generally to carbon nano-tube composites and particularly to carbon nano-tube compositions for electrochemical energy storage devices and a method for making the same.Type: ApplicationFiled: May 23, 2011Publication date: November 24, 2011Applicant: ADA TECHNOLOGIES, INC.Inventors: Wen Lu, Joshua Buettner-Garrett, Michael Krysiak
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Publication number: 20110281176Abstract: An electrode material is created by forming a thin coating or small deposits of metal oxide as an intercalation host on a carbon powder. The carbon powder performs a role in the synthesis of the oxide coating, in providing a three-dimensional, electronically conductive substrate supporting the metal oxide, and as an energy storage contribution material through ion adsorption or intercalation. The metal oxide includes one or more metal oxides. The electrode material, a process for producing said electrode material, an electrochemical capacitor and an electrochemical secondary (rechargeable) battery using said electrode material is disclosed.Type: ApplicationFiled: July 25, 2011Publication date: November 17, 2011Inventor: Fraser W. SEYMOUR
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Publication number: 20110227001Abstract: An electrode material comprising at least one compound of the general formula (I) LiaMbFcOd??(I) in which the variables are each defined as follows: M is at least one transition metal selected from Ti, Cr, V and Mn, where Ti, Cr, V and Mn may be replaced partially by Al, Ga, Ni, Fe or Co, a is in the range from 2.5 to 3.5, b is in the range from 0.8 to 1.2, c is in the range from 5.0 to 6.5 and d is in the range from zero to 1.0.Type: ApplicationFiled: March 18, 2011Publication date: September 22, 2011Applicant: BASF SEInventors: Martin Schulz-Dobrick, Martin Lerch, Helmut Ehrenberg, Suliman Nakhal, Julia Koch, Frieder Scheiba, Markus Herklotz
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Patent number: 8017428Abstract: A process for the production of a silicon solar cell comprising application and firing of an aluminum paste which comprises magnesium oxide and/or magnesium compounds capable of forming magnesium oxide on firing on the back-side of a silicon wafer provided with a silicon nitride antireflective coating on its front-side and being contaminated with silicon nitride on its back-side, and firing the aluminum paste after its application.Type: GrantFiled: June 10, 2009Date of Patent: September 13, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Giovanna Laudisio, Kurt Richard Mikeska, Alistair Graeme Prince, Richard John Sheffield Young
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Publication number: 20110204298Abstract: Disclosed herein is an electro-conductive thermoplastic resin composition with controllable superior electro-conductivity and excellent impact resistance. The electro-conductive thermoplastic resin composition comprises 80 to 99.7 parts by weight of a thermoplastic resin, 0.1 to 5 parts by weight of a carbon nanotube, 0.1 to 5 parts by weight of an impact modifier, and 0.1 to 10 parts by weight of a hydrophobic polymer additive, based on a total of 100 parts by weight of the electro-conductive thermoplastic resin composition.Type: ApplicationFiled: December 31, 2007Publication date: August 25, 2011Applicant: CHEIL INDUSTRIES INC.Inventors: Young Kyu Chang, Sang Wan Kim, Young Sil Lee
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Publication number: 20110147671Abstract: The present invention relates to a process for the preparation of compounds of general Formula (I) La?bM1bFe1?cM2cPd?eM3eOx (I), wherein Fe has the oxidation state +2 and M1, M2, M3, a, b, c, d, e and x are: M1: Na, K, Rb and/or Cs, M2: Mn, Mg, Al Ca, Ti Co, Ni, Cr, V, M3: Si, S, F a: 0.8-1.9, b: 0-0.3, c: 0-0.9, 15 d: 0.8-1.9, e: 0-0.5, x: 1.Type: ApplicationFiled: August 25, 2009Publication date: June 23, 2011Applicant: BASF SEInventors: Kirill Bramnik, Hartmut Hibst, Jordan Keith Lampert
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Publication number: 20110139228Abstract: An object of the present invention is to provide a transparent electroconductive film, which in addition to satisfying each of the requirements of favorable phototransmittance, high electrical conductivity, low refractive index and the like required when using in a multi-junction solar cell, enables running costs to be reduced since the transparent electroconductive film is produced without using a vacuum deposition method. The transparent electroconductive film for a solar cell of the present invention is provided between photoelectric conversion layers of a multi-junction solar cell, a coated film of fine particles formed by coating using a wet coating method is baked, the electroconductive component in the base material that composes the electroconductive film is present within the range of 5 to 95% by weight, and the thickness of the electroconductive film is within the range of 5 to 200 nm.Type: ApplicationFiled: August 27, 2009Publication date: June 16, 2011Applicant: MITSUBISHI MATERIALS cORPORATIONInventors: Masahide Arai, Kazuhiko Yamasaki, Satoko Ogawa, Toshiharu Hayashi
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Publication number: 20110134585Abstract: A mesoporous carbon material, a fabrication method thereof and a supercapacitor containing the mesoporous carbon material are provided. The mesoporous carbon material includes a plurality of carbon nanotubes (CNTs) and/or metal particles and/or metal oxide particles, and a carbon matrix. The mesoporous carbon material has a plurality of mesopores formed by the carbon matrix and the carbon nanotubes and/or the metal particles and/or the metal oxide particles. The plurality of carbon nanotubes, and/or the metal particles and/or the metal oxide particles are formed substantially adjacent to the plurality of mesopores.Type: ApplicationFiled: December 7, 2010Publication date: June 9, 2011Inventors: Bo-Jiun SHEN, Duo-Fong Huang, Chi-Chang Chen, Hui-Ling Wen, Rong-Chang Llang
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Publication number: 20110108775Abstract: There is provided a particulate conductive filler which comprises a conductive metal coating formed over a coarse carbon-based core such as graphite between 350 and 1000 microns in size. The conductive filler is used in conjunction with a polymer matrix such as an elastomer typified by silicone elastomer to form composite materials for conductive and electromagnetic interference shielding applications.Type: ApplicationFiled: January 20, 2011Publication date: May 12, 2011Applicant: Sulzer Metco (Canada) Inc.Inventors: Brian William Callen, William Kimber Walkhouse
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Publication number: 20110039158Abstract: The invention relates to materials for use as electrodes in an alkali-ion secondary (rechargeable) battery, particularly a lithium-ion battery. The invention provides transition-metal compounds having the ordered-olivine, a modified olivine, or the rhombohedral NASICON structure and the polyanion (PO4)3? as at least one constituent for use as electrode material for alkali-ion rechargeable batteries.Type: ApplicationFiled: August 20, 2010Publication date: February 17, 2011Inventors: Michel Armand, John B. Goodenough, Akshaya K. Padhi, Kjrakodu S. Nanjundaswamy, Christian Masquelier
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Publication number: 20100327234Abstract: Disclosed are a polyphenylene-ether-based thermoplastic resin composition that includes: (A) a mixed resin of (A-1) a polyphenylene-ether-based resin and (A-2) a polyamide resin; (B) a styrene-based copolymer resin; (C) a conductive additive; and (D) mica, a method of preparing the same, and a molded product using the same.Type: ApplicationFiled: June 2, 2010Publication date: December 30, 2010Applicant: CHEIL INDUSTRIES INC.Inventors: In-Sik SHIM, Jin-Young HUH, Doo-Han HA
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Patent number: 7854861Abstract: Composition of carbon nanotubes (CNTs) are produced into inks that are dispensable via ink jet deposition processes or others. The CNT ink is dispensed into wells formed in a cathode structure. The inks include carbon nanotubes, binding materials, and possibly other nanoparticles. Such binding materials may include epoxies and silicate materials.Type: GrantFiled: September 9, 2004Date of Patent: December 21, 2010Assignee: Applied Nanotech Holdings, Inc.Inventors: Yunjun Li, Richard Lee Fink, Mohshi Yang, Zvi Yaniv
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Publication number: 20100301281Abstract: The present invention relates to a process for the preparation of compounds of general formula (I): Lia?bM1bV2-cM2c(PO4)x; wherein M1, M2, a, b, c and x have the following meanings: M1: Na, K, Rb and/or Cs, M2: Ti, Zr, Nb, Cr, Mn, Fe, Co, Ni, Al, Mg and/or Sc, a: 1.5-4.5, b: 0-0.6, c: 0-1.98 and x: number to equalize the charge of Li and V and M1 and/or M2, if present, wherein a?b is >0, to a compound according to general formula (I) as defined above, to spherical agglomerates and/or particles comprising at least one compound of general formula (I) as defined above, to the use of such a compound for the preparation of a cathode of a lithium ion battery or an electrochemical cell, and to a cathode for a lithium ion battery, comprising at least one compound as defined above.Type: ApplicationFiled: September 18, 2008Publication date: December 2, 2010Applicant: BASF SEInventors: Hartmut Hibst, Brian Roberts, Jordan Keith Lampert, Kirill Bramnik
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Publication number: 20100288980Abstract: This invention relates to a composition comprising carbon nanotubes and a protective material that protects the carbon nanotubes from damage or degradation such as by oxidation upon exposure to high temperature.Type: ApplicationFiled: November 14, 2008Publication date: November 18, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventor: Steven Dale Ittel
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Publication number: 20100283012Abstract: The present invention relates to a process for the preparation of compounds of general formula (I) Lia-bM1bV2-cM2c(PO4)x (I) with M1: Na, K, Rb and/or Cs, M2: Ti, Zr, Nb, Cr, Mn, Fe, Co, Ni, Al, Mg and/or Sc, a: 1.5-4.5, b: 0-0.6, c: 0-1.98 and x: number to equalize the charge of Li and V and M1 and/or M2, if present, wherein a?b is >0, by providing an essentially aqueous mixture comprising at least one lithium-comprising compound, at least one vanadium-comprising compound in which vanadium has the oxidation state +5 and/or +4, and at least one M1-comprising compound, if present, and/or at least one M2-comprising compound, if present, and at least one reducing agent which is oxidized to at least one compound comprising at least one phosphorous atom in oxidation state +5, drying and calcining.Type: ApplicationFiled: September 18, 2008Publication date: November 11, 2010Applicant: BASF SEInventors: Hartmut Hibst, Brian Roberts, Jordan Keith Lampert, Kirill Bramnik
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Publication number: 20100247751Abstract: A process for manufacturing a thermally and/or electrically conducting solid, in which: at least one doped aqueous dispersion is prepared, the dispersion including a mica powder and at least one dopant powder, these being dispersed in a non-ionic aqueous liquid, each dopant being chosen from graphites, with the exception of unexpanded expandable graphites, the mica representing at least 5% by weight of the solid matter of the dispersion, the dopant(s) representing 1 to 95% by weight of the solid matter of the dispersion and a proportion of each dopant being chosen depending on the desired thermal and electrical conductivities; each doped aqueous dispersion undergoes a forming operation, the proportion by weight of solid matter in the dispersion having been chosen so as to obtain, in the case of the doped aqueous dispersion, a viscosity compatible with the forming technique used; and the doped aqueous dispersion is left to undergo form consolidation, by at least the evaporation of the aqueous phase of the dispType: ApplicationFiled: November 20, 2008Publication date: September 30, 2010Applicants: UNIVERSITE PAUL SABATIER TOULOUSE III, INSTITUT NATIONAL POLYTECHNIQUE DE TOULOUSEInventors: Pierre Gros, Jacques Prosdocimi
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Patent number: 7794628Abstract: A chip-shaped electronic component includes a substrate and an end face electrode layer provided on an end face of the substrate, in which the end face electrode layer contains a mixed material. The mixed material includes as a conductive particle, a carbon powder, a whisker-like inorganic filler coated with a conductive film, and a flake-like conductive powder. Additionally, an epoxy resin has a weight-average molecular weight between 1,000 and 80,000.Type: GrantFiled: August 28, 2006Date of Patent: September 14, 2010Assignee: Panasonic CorporationInventors: Naohiro Takashima, Shoji Hoshitoku, Takasi Oobayasi, Mituru Harada
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Publication number: 20100171081Abstract: Disclosed is an energy storage device having electrodes containing mineral microtubules. The electrodes may be formed, for example, from a paste containing microtubules, a conductive polymer containing mineral microtubules, or an aerogel containing the mineral microtubules. The mineral microtubules may be filled with carbon, a pseudocapacitance material, or a magnetoresistive material. The mineral microtubules may also be coated with a photoconductive material.Type: ApplicationFiled: March 8, 2010Publication date: July 8, 2010Applicant: NaturalNano Research, Inc.Inventors: Robert D. Gunderman, John M. Hammond
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Publication number: 20100148128Abstract: Deposition of an electrode active material printing suspension onto a conductive substrate by various pad-printing techniques is described. After heat-treating to evaporate the solvent and decompose a printing binder, an electrode active coating suitable for incorporation into an electrochemical cell is provided.Type: ApplicationFiled: January 18, 2005Publication date: June 17, 2010Inventors: Ashish Shah, Keith Seitz
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Publication number: 20100062339Abstract: Described are cathode materials for lithium batteries. Better cathode materials may be produced by mixing at least two compounds and a binder additive. The first compound includes one or more salts of lithium metal phosphorous while the second compound includes one or more lithium transition metal oxides. In other instances, a conductive additive may also be incorporated. The cathode materials so produced exhibit enhanced electrical properties and thermal stability.Type: ApplicationFiled: March 21, 2008Publication date: March 11, 2010Applicant: BYD COMPANY LIMITEDInventors: Fuzhong Pan, Xi Shen, Caimin Wan, Shengping You
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Publication number: 20090321687Abstract: Disclosed herein are an electrically conductive thermoplastic resin composition and a plastic article including the same. The electrically conductive thermoplastic resin composition comprises about 80 to about 99.9 parts by weight of a thermoplastic resin, about 0.1 to about 10 parts by weight of carbon nanotubes, about 0.1 to about 10 parts by weight of an impact modifier, based on a total of about 100 parts by weight of the thermoplastic resin and the carbon nanotubes, and about to about 10 parts by weight of conductive metal oxide, based on a total of about 100 parts by weight of the thermoplastic resin and the carbon nanotubes.Type: ApplicationFiled: June 22, 2009Publication date: December 31, 2009Applicant: CHEIL INDUSTRIES INC.Inventors: Tae Kyun KIM, Young Sil LEE, Young Kyu CHANG
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Publication number: 20090261303Abstract: Disclosed herein are an electrically conductive thermoplastic resin composition and a plastic article. The electrically conductive thermoplastic resin composition comprises about 80 to about 99% by weight of a thermoplastic resin, about 0.1 to about 10% by weight of carbon nanotubes and about 0.1 to about 10% by weight of an organo nanoclay.Type: ApplicationFiled: June 26, 2009Publication date: October 22, 2009Applicant: CHEIL INDUSTRIES INC.Inventors: Byeong Yeol Kim, Young Sil Lee, Young Kyu Chang
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Publication number: 20090246602Abstract: There are provided fine particle-carrying carbon particles, which can be used as a substitute for the existing platinum-carrying carbon particles or platinum metal particles commonly used in electrocatalysts for fuel cells or the like, and which are significantly reduced in the amount of platinum to be used in comparison with the existing platinum-carrying carbon particles, and an electrode for a fuel cell using the same carbon particles. The fine particle-carrying carbon particle comprises a carbon particle with an average particle diameter of from 20 to 70 nm, and fine particles of a metal oxide with an average crystallite size of from 1 to 20 nm, carried on the carbon particle, wherein the metal oxide contains a noble metal element such as a platinum element, and is represented by the formula: MOx in which the metal element M is partially substituted by the noble metal element.Type: ApplicationFiled: September 25, 2006Publication date: October 1, 2009Inventors: Yuko Sawaki, Yoshinori Sato, Mikio Kishimoto, Haruyuki Nakanishi, Masahiro Imanishi
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Publication number: 20090206723Abstract: A water-based composition is used to form an electron and includes a carbonaceous compound, a silicate compound, and water. The electron emitter includes a carbonaceous compound and a silicate compound and is prepared using the water-based composition, and an electron emission device includes the electron emitter. The water-based composition that is used to form an electron emitter is suitable for forming a distinctive pattern, and the electron emitter prepared using the water-based composition has very small residual carbon content.Type: ApplicationFiled: December 30, 2008Publication date: August 20, 2009Applicant: Samsung SDI Co., Ltd.Inventors: Yoon-Jin KIM, Jae-Myung Kim, Kyu-Nam Joo, Hyun-Ki Park, So-Ra Lee, Hee-Sung Moon
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Publication number: 20090134361Abstract: A chip-shaped electronic component comprising a substrate and an end face electrode layer provided on an end face of the substrate, in which the end face electrode layer contains a mixed material including, as a conductive particle, a carbon powder, a whisker-like inorganic filler coated with a conductive film, and a flake-like conductive powder, and an epoxy resin having a weight-average molecular weight between 1,000 and 80,000.Type: ApplicationFiled: August 28, 2006Publication date: May 28, 2009Inventors: Naohiro Takashima, Shoji Hoshitoku, Takasi Oobayasi, Mituru Harada
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Publication number: 20090127516Abstract: An electroconductive polymer composition comprises a curable liquid thermosetting resin matrix; conductive nano-fibres such as carbon nano-tubes, carbon nano-fibres, metallic nano-fibres or non-conductive nano-fibres with an electrically conductive coating; and a particulate non-conductive phase discontinuously dispersed throughout the thermosetting matrix. The conductive nano-particles are dispersed throughout the matrix whereby when the thermosetting resin is cured, a percolation threshold is established within the thermoset matrix. The particulate non-conductive phase is selected from thermoplastic resin powders or exfoliated particles of nano-clay intercalated with the liquid thermosetting resin.Type: ApplicationFiled: July 20, 2006Publication date: May 21, 2009Inventors: Masaya Kotaki, Ke Wang, Chaobin He
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Publication number: 20090110627Abstract: An economical method of preparing a large-sized graphene sheet having a desired thickness includes forming a film, the film comprising a graphitizing catalyst; heat-treating a gaseous carbon source in the presence of the graphitizing catalyst to form graphene; and cooling the graphene to form a graphene sheet. A graphene sheet prepared according to the disclosed method is also described.Type: ApplicationFiled: July 8, 2008Publication date: April 30, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae-young CHOI, Hyeon-Jin SHIN, Seon-mi YOON
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Publication number: 20080277628Abstract: This invention provides an electrically conductive, less anisotropic, and structurally sound composite composition for fuel cell flow field plate or bipolar plate applications. The composition comprises: (a) expanded or exfoliated graphite; (b) particles of non-expandable graphite or carbon, wherein the particles are between 3% and 60% by weight based on the total weight of the particles and the expanded graphite; and (c) a binder or matrix material to bond the expanded graphite and the particles of non-expanded graphite or carbon for forming a highly conductive composite, wherein the binder or matrix material is between 3% and 60% by weight based on the total composite composition weight. The composite plate exhibits a thickness-direction conductivity typically greater than 35 S/cm, more typically greater than 50 S/cm, most typically greater than 100 S/cm, and a thickness-direction specific areal conductivity greater than 200 S/cm2, more typically greater than 500 S/cm2.Type: ApplicationFiled: May 8, 2007Publication date: November 13, 2008Inventors: Aruna Zhamu, Jinjun Shi, Jiusheng Guo, Bor Z. Jang
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Publication number: 20080135814Abstract: The present invention relates to a composition for manufacturing a separator for PEMFC (Proton Exchange Membrane Fuel Cell) and a separator for PEMFC manufactured out of the same. The composition provided by the present invention includes 70 to 80 parts by weight of graphite powder; 3 to 10 parts by weight of carbon fiber; 1 to 5 parts by weight of metal oxide selected from the group consisting of magnesium oxide, aluminum oxide, calcium oxide and their mixtures; and 10 to 30 parts by weight of thermosetting resin selected from the group consisting of vinyl ester resin, phenol resin, epoxy resin and their mixtures. The separator for PEMFC manufactured out of the composition of the present invention has excellent electrical conductivity, mechanical strength and impermeability to hydrogen or oxygen gas, thereby considerably improving the performance of a fuel cell.Type: ApplicationFiled: November 28, 2007Publication date: June 12, 2008Inventor: Jhong-Ho Lee
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Publication number: 20080131777Abstract: A positive electrode material is disclosed which contains an iron lithium phosphate as a positive electrode active material and has a large charge/discharge capacity, high-rate adaptability, and good charge/discharge cycle characteristics at the same time. Also disclosed are a simple method for producing such a positive electrode material and a high-performance secondary battery employing such a positive electrode material. Specifically, disclosed is a positive electrode material for secondary battery characterized by mainly containing a positive electrode active material represented by the general formula: LinFePO4 (wherein n is a number of 0-1) and further containing at least one different metal element selected from the group consisting of vanadium (V), chromium (Cr), copper (Cu), zinc (Zn), indium (In) and tin (Sn). This positive electrode material can be produced using a halide of such a metal element as the raw material.Type: ApplicationFiled: October 26, 2004Publication date: June 5, 2008Inventors: Naoki Hatta, Toshikazu Inaba, Izumi Uchiyama
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Patent number: 7223482Abstract: Phosphor coated with wide bandgap metal oxide which can be used for a plasma display panel (PDP) has a surface that is coated with a continuous, thin film of wide bandgap metal oxide. In preparing the phosphor coated with wide bandgap metal oxide, a pH of the wide bandgap metal oxide precursor solution containing an organic solvent and water is adjusted to 0.1–10 and heated under a reflux, thereby obtaining a metal hydroxide gel. The wide bandgap metal hydroxide gel is made to contact a phosphor for a PDP, thereby obtaining the gel-coated phosphor. The gel-coated phosphor is then dried and sintered.Type: GrantFiled: September 14, 2001Date of Patent: May 29, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Young-rag Do, Do-hyung Park, Yong-seon Kim
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Patent number: 7037380Abstract: A compound such as Alq3 accumulated on the inner surface of a chamber at the time of organic EL device production and wasted is recovered and recycled, whereby the production cost is reduced. The inner surface of a chamber or the surface of components in the chamber to which a compound such as Alq3 has adhered is cleaned with a fluorinated alcohol such as 2,2,3,3,4,4,5,5-octafluoropentanol to recover Alq3.Type: GrantFiled: December 16, 2004Date of Patent: May 2, 2006Assignee: Asahi Glass Company, LimitedInventors: Nobuya Hayashi, Shinichiro Narui, Hidekazu Okamoto, Masaaki Tsuzaki
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Patent number: 7025905Abstract: Black composite particles for a semiconductor sealing material of the present invention, comprises: an extender pigment as a core particle; and a black pigment formed on surface of the extender pigment in an amount of from 1 to 100 parts by weight based on 100 parts by weight of the extender pigment, and a semiconductor sealing material by using the black composite particles. Such black composite particles are not only enhanced in blackness, moisture resistance, fluidity and tinting strength, but also show an excellent dispersibility in binder resins, and the semiconductor sealing material is capable of exhibiting a high volume resistivity as well as excellent blackness, moisture resistance, soldering heat resistance, flowability and flexural strength.Type: GrantFiled: January 31, 2003Date of Patent: April 11, 2006Assignee: Toda Kogyo CorporationInventors: Hiroko Morii, Yusuke Shimohata, Kazuyuki Hayashi
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Patent number: 6896824Abstract: A heat-softening heat-radiation sheet including a polyolefin-based heat-conductive composition which comprises a polyolefin and a heat-conductive filler, has a softening point of 40° C. or above, has a thermal conductivity of 1.0 W/mK or higher, has a viscosity at 80° C. of from 1×102 to 1×105 Pa·s and has a plasticity at 25° C. in the range of from 100 to 700. This heat-radiation sheet which is in the form of a solid sheet at room temperature, can readily be attached to or detached from electronic components and a heat sink, is capable of softening by the heat generated during operation of electronic components, to have the interfacial contact thermal resistance at a negligible level, and has a superior heat-radiation performance.Type: GrantFiled: October 11, 2001Date of Patent: May 24, 2005Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kazuhiko Tomaru, Tsutomu Yoneyama, Ryuichi Handa
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Patent number: 6884742Abstract: An aluminum nitride ceramic is provided, containing boron atoms in an amount of not lower than 1.0 weight percent and carbon atoms in an amount of not lower than 0.3 weight percent and having a volume resistivity at room temperature of not higher than 1×1012 ?·cm. The aluminum ceramic comprises aluminum nitride and an intergranular phase mainly consisting of boron nitride constituting a conductive path. Such a ceramic may be obtained by holding a mixture containing at least aluminum nitride and boron carbide at a holding temperature in a range of 1400° C. to 1800° C. and then sintering the mixture at a maximum temperature that is higher than the holding temperature.Type: GrantFiled: November 26, 2002Date of Patent: April 26, 2005Assignee: NGK Insulators, Ltd.Inventors: Yuji Katsuda, Jun Yoshikawa
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Patent number: 6811917Abstract: A conductive, moldable composite material for the manufacture of electrochemical cell components comprising a thermosetting resin system and conductive filler wherein the thermosetting resin composition comprises: (1) a polybutadiene or polyisoprene resin; (2) an optional functionalized liquid polybutadiene or polyisoprene resin; (3) an optional butadiene- or isoprene-containing copolymer; and (4) an optional low molecular weight polymer. In a preferred embodiment, the conductive moldable composite material is used to form a bipolar plate, current collector or other electrochemical cell component. Articles made of the conductive moldable composite material are resistant to chemical attack and hydrolysis, have excellent mechanical strength and toughness, have a volume resistivity of about 0.116 ohm-cm or less and preferably about 0.04 ohm-cm or less and a thermal conductivity of at least about 5 watts/meter ° K.Type: GrantFiled: August 14, 2001Date of Patent: November 2, 2004Assignee: World Properties, Inc.Inventors: Bruce B. Fitts, Vincent R. Landi, Saroj Kumar Roy
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Patent number: 6776927Abstract: An oxynitride phosphor activated by a rare earth element, represented by the formula CaxSi12−(m+n)Al(m+n)OnN16−n: EuyDyz, wherein stabilizing metal (Ca) is substituted partially by Eu or Eu and Dy where 0.3<x<1.5, 0.01<y<0.7, 0≦z<0.1, 0.6<m<3.0 and 0<n<1.5.Type: GrantFiled: April 8, 2003Date of Patent: August 17, 2004Assignee: National Institute for Materials ScienceInventors: Mamoru Mitomo, Tadashi Endo, Kyouta Ueda, Masakazu Komatsu