Graphite Patents (Class 423/448)
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Publication number: 20140363363Abstract: A rectangular substrate 12 composed of c-plane sapphire is prepared. Nickel serving as a catalytic metal is deposited on the entirety of an upper surface of the substrate 12 to form a catalytic metal film 14 (see (a)). The catalytic metal film 14 is patterned by a lithography method into a catalytic metal film 16 having a predetermined shape (see (b)). The temperature of the catalytic metal film 16 is raised to 1000° C. and maintained at 1000° C. for 20 minutes. The temperature of the catalytic metal film 16 is lowered from 1000° C. to 800° C. at a rate of 5° C./min. The temperature of the catalytic metal film 16 is maintained at 800° C. for 15 hours. Thereby, a catalytic metal layer 17 having large grains is provided (see (c)).Type: ApplicationFiled: August 26, 2014Publication date: December 11, 2014Inventors: Shigeya NARITSUKA, Takahiro MARUYAMA
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Publication number: 20140356277Abstract: Methods for converting graphite oxide into graphene by exposure to electromagnetic radiation are described. As an example, graphene oxide may be rapidly converted into graphene upon exposure to converged sunlight.Type: ApplicationFiled: August 14, 2014Publication date: December 4, 2014Inventors: Ramaprabhu SUNDARA, Eswaraiah VARRLA, Jyothirmayee Aravind SASIDHARANNAIR SASIKALADEVI
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Publication number: 20140353554Abstract: An oligophenylene monomer of general formula (I) wherein R1 and R2 are independently of each other H, halogene, —OH, —NH2, —CN, —NO2 or a linear or branched, saturated or unsaturated C1-C40 hydrocarbon residue, which can be substituted 1- to 5-fold with halogene (F, Cl, Br, I), —OH, —NH2, —CN and/or —NO2, and wherein one or more CH2-groups can be replaced by —O— or —S—, or an optionally substituted aryl, alkylaryl or alkoxyaryl residue; and m represents 0, 1 or 2.Type: ApplicationFiled: December 17, 2012Publication date: December 4, 2014Applicants: BASF SE, Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V.Inventors: Matthias Georg Schwab, Akimitsu Narita, Xinliang Feng, Klaus Muellen
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Patent number: 8900709Abstract: An elastic device includes a first elastic supporter; a second elastic supporter and a carbon nanotube film. The second elastic supporter is spaced from the first elastic supporter. The carbon nanotube film has a first side fixed on the first elastic supporter and a second side opposite to the first side and fixed on the second elastic supporter. The carbon nanotube film includes a plurality of carbon nanotube strings separately arranged, located side by side and extending substantially along a first direction from the first side to the second side and one or more carbon nanotubes located between adjacent carbon nanotube strings. The carbon nanotube film is capable of elastic deformation along a second direction that is substantially perpendicular to the first direction.Type: GrantFiled: April 19, 2012Date of Patent: December 2, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Kai-Li Jiang, Chen Feng, Lin Xiao, Zhuo Chen, Liang Liu, Shou-Shan Fan, Qun-Qing Li, Li Qian, Kai Liu, Yang Wei
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Patent number: 8900542Abstract: A method for forming graphene nanoribbons includes: (a) dispersing carbon nanotubes in a solvent to obtain a nanotube-dispersing solution; (b) adding an oxidant into the nanotube-dispersing solution to obtain a reaction solution; and (c) microwave heating the reaction solution and longitudinally unzipping the carbon nanotubes to form graphene nanoribbons.Type: GrantFiled: January 24, 2012Date of Patent: December 2, 2014Assignee: Chang Gung UniversityInventors: Chia-Liang Sun, Ching-Tang Chang
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Publication number: 20140349173Abstract: A method for forming a negative electrode for a lithium secondary battery, includes providing a paste comprising graphite particulates comprise assembled or bound graphite particles in each of which a plurality of flat-shaped particles are assembled or bound together so that the planes of orientation are not parallel to one another, and the mixture including 3 to 10 parts by weight of the organic binder per 100 parts by weight of the graphite particulates, a binder and a solvent, coating the paste on a current collector, drying the paste coated on the current collector to form a mixture of the graphite particulates and the binder, and integrating the mixture with the current collector by pressing to provide a density of the mixture of graphite particulates and organic binder of 1.5 to 1.9 g/cm3.Type: ApplicationFiled: August 8, 2014Publication date: November 27, 2014Inventors: Yoshito Ishii, Tatsuya Nishida, Atsushi Fujita, Kazuo Yamada
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Patent number: 8894886Abstract: Exemplary embodiments provide materials and methods for forming graphene-based exfoliated products with low oxygen contents by a reductive-expansion reaction from a physical mixture containing graphite-based precursor(s) and a chemical agent. Exemplary embodiments also provide materials and methods for forming graphene-based exfoliated products with controllable amounts of nitrogen and/or other impurities incorporated in the material structure as a result of a reductive-expansion reaction from a physical mixture containing graphite-based precursor(s) and a chemical agent.Type: GrantFiled: March 4, 2011Date of Patent: November 25, 2014Assignee: STC.UNMInventors: Claudia Catalina Luhrs, Jonathan Phillips
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Patent number: 8894964Abstract: A crystalline carbon material with controlled interlayer spacing and a method of manufacturing the crystalline carbon material are disclosed. The crystalline carbon material has peaks of a (002) plane at 2?=23°±5.0° and 2?=26.5°±1.0° when X-ray diffraction is measured using a CuK? ray. The peak height at 2?=23°±5.0° is higher than the one at 2?=26.5°±1.0°.Type: GrantFiled: August 9, 2012Date of Patent: November 25, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Bok-Hyun Ka, Kyeu-Yoon Sheem, Da-Un Han, Hyun-Uk Jo, Sumihito Ishida, Eui-Hwan Song
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Patent number: 8895147Abstract: An elastic device includes a first elastic supporter; a second elastic supporter and a carbon nanotube film. The second elastic supporter is spaced from the first elastic supporter. The carbon nanotube film has a first side fixed on the first elastic supporter and a second side opposite to the first side and fixed on the second elastic supporter. The carbon nanotube film includes a plurality of first carbon nanotubes orientated primarily along a first direction and a plurality of second carbon nanotubes having orientations different from the first direction. At least one portion of each of the second carbon nanotubes contacts with at least two adjacent first carbon nanotubes. The carbon nanotube film is capable of elastic deformation along a second direction that is substantially perpendicular to the first direction.Type: GrantFiled: April 19, 2012Date of Patent: November 25, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Kai-Li Jiang, Chen Feng, Lin Xiao, Zhuo Chen, Liang Liu, Shou-Shan Fan, Qun-Qing Li, Li Qian, Kai Liu, Yang Wei
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Publication number: 20140338962Abstract: Graphene layers, hexagonal boron nitride layers, as well as other materials made of primarily sp2 bonded atoms and associated methods are disclosed. In one aspect, for example, a method of forming a graphene layer is provided. Such a method may include mixing a carbon source with a horizontally oriented molten solvent, precipitating the carbon source from the molten solvent to form a graphite layer across the molten solvent, and separating the graphite layer into a plurality of graphene layers.Type: ApplicationFiled: March 31, 2014Publication date: November 20, 2014Inventor: Chien-Min Sung
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Patent number: 8891247Abstract: A conductive circuit containing a polymer composite, which contains at least one polymer and a modified graphite oxide material, containing thermally exfoliated graphite oxide having a surface area of from about 300 m2/g to 2600 m2/g, and a method of making the same.Type: GrantFiled: March 31, 2011Date of Patent: November 18, 2014Assignee: The Trustees of Princeton UniversityInventors: Robert K. Prud'Homme, Ilhan A. Aksay
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Publication number: 20140332993Abstract: With a manufacturing method of a graphite sheet, a cavity-forming sheet having a mesh structure or a nonwoven fabric structure is firstly impregnated with polyamide acid and then molded into a sheet. The molded sheet is then heat treated to imidize polyamide acid so as to produce a polyimide sheet composed of polyimide and the cavity-forming sheet disposed in polyimide. The polyimide sheet is then fired in a non-oxidizing atmosphere to pyrolyze the polyimide so as to produce the graphite sheet. The cavity-forming sheet is made of material which maintains a shape thereof when the polyimide sheet is produced and which gasifies and loses at least 80% of its weight when the polyimide is pyrolyzed.Type: ApplicationFiled: March 5, 2013Publication date: November 13, 2014Inventors: Tatsuhiro Ooshiro, Norihiro Kawamura
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Publication number: 20140335011Abstract: The present invention relates to a method for preparing graphene substantially free of contamination by metallic, magnetic, organic and inorganic impurities, and also to the use of the resulting graphene for the production of transparent electrodes, batteries, electron-acceptor or electron-donor materials, in particular in photovoltaic systems, photovoltaic panels, transistor channels, in particular in electronics, nonlinear emitters or absorbers of infrared photons, current-conducting electrodes, anti-static coatings, chemical detectors, vias and interconnections in electronics, current-conducting cables, and solar cells.Type: ApplicationFiled: December 11, 2012Publication date: November 13, 2014Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE ALTInventors: Lionel Dubois, Serge Gambarelli, Ashok Nanjundan
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Publication number: 20140335010Abstract: A method of producing pristine graphene particles through a one-step, gas-phase, catalyst-free detonation of a mixture of one or more carbon-containing compounds hydrocarbon compounds and one or more oxidizing agents is provided. The detonation reaction occurs very quickly and at relatively high temperature, greater than 3000 K, to generate graphene nanosheets that can be recovered from the reaction vessel, such as in the form of an aerosol. The graphene nanosheets may be stacked in single, double, or triple layers, for example, and may have an average particle size of between about 35 to about 250 nm.Type: ApplicationFiled: May 8, 2014Publication date: November 13, 2014Applicant: Kansas State University Research FoundationInventors: Christopher Sorensen, Arjun Nepal, Gajendra Prasad Singh
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Patent number: 8883114Abstract: A method of producing nano-scaled graphene platelets (NGPs) having an average thickness no greater than 50 nm, typically less than 2 nm, and, in many cases, no greater than 1 nm. The method comprises (a) intercalating a supply of meso-carbon microbeads (MCMBs) to produce intercalated MCMBs; and (b) exfoliating the intercalated MCMBs at a temperature and a pressure for a sufficient period of time to produce the desired NGPs. Optionally, the exfoliated product may be subjected to a mechanical shearing treatment, such as air milling, air jet milling, ball milling, pressurized fluid milling, rotating-blade grinding, or ultrasonicating. The NGPs are excellent reinforcement fillers for a range of matrix materials to produce nanocomposites. Nano-scaled graphene platelets are much lower-cost alternatives to carbon nano-tubes or carbon nano-fibers.Type: GrantFiled: December 26, 2007Date of Patent: November 11, 2014Assignee: Nanotek Instruments, Inc.Inventors: Aruna Zhamu, Jiusheng Guo, Bor Z. Jang
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Publication number: 20140328006Abstract: There is disclosed a combined hydrothermal and activation process that uses hemp bast fiber as the precursor to achieve graphene-like carbon nanosheets, a carbon nanosheet comprising carbonized crystalline cellulose, a carbon nanosheet formed by carbonizing crystalline cellulose, a capacitative structure comprises interconnected carbon nanosheets of carbonized crystalline cellulose, a method of forming a nanosheet comprising carbonizing crystalline cellulose to create carbonized crystalline cellulose. The interconnected two-dimensional carbon nanosheets also contain very high levels of mesoporosity.Type: ApplicationFiled: May 5, 2014Publication date: November 6, 2014Applicant: THE GOVERNORS OF THE UNIVERSITY OF ALBERTAInventors: David Mitlin, Huanlei Wang, Zhanwei Xu, Zhi Li, Chris Holt
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Patent number: 8877154Abstract: One use for irradiated graphite after remediation processing is to recycle it into a new graphite artifact. Examples of such artifacts include an electrode to be used for vitrification of radionucleotides, graphite or carbon articles for uranium processing, a moderator for a HTGR, in particularly a Gen IV HTGR, other types of graphite products for nuclear facilities, charcoal filters, silicon carbide applications, etc. Such graphite artifacts can be formed with up to 20 pph of carbon black, the carbon black is formed from vitrified irradiated graphite. Optionally the graphite artifact may be formed from up to 75 pph of pitch.Type: GrantFiled: July 27, 2012Date of Patent: November 4, 2014Assignee: GrafTech International Holdings Inc.Inventor: Tracy Albers
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Patent number: 8877340Abstract: A graphene layer is formed on a crystallographic surface having a non-hexagonal symmetry. The crystallographic surface can be a surface of a single crystalline semiconductor carbide layer. The non-hexagonal symmetry surface of the single crystalline semiconductor carbide layer is annealed at an elevated temperature in ultra-high vacuum environment to form the graphene layer. During the anneal, the semiconductor atoms on the non-hexagonal surface of the single crystalline semiconductor carbide layer are evaporated selective to the carbon atoms. As the semiconductor atoms are selectively removed, the carbon concentration on the surface of the semiconductor-carbon alloy layer increases. Despite the non-hexagonal symmetry of the surface of the semiconductor-carbon alloy layer, the remaining carbon atoms can coalesce to form a graphene layer having hexagonal symmetry.Type: GrantFiled: July 27, 2010Date of Patent: November 4, 2014Assignee: International Business Machines CorporationInventors: Jack O. Chu, Christos Dimitrakopoulos, Marcus O. Freitag, Alfred Grill, Timothy J. McArdle, Chun-Yung Sung, Robert L. Wisnieff
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Publication number: 20140322629Abstract: A nitrate reduction method in accordance with the present invention reduces at least one type of nitrates and nitrites in a presence of a carbon-based material containing at least one selected from a group consisting of graphite, graphene, and amorphous carbon.Type: ApplicationFiled: December 7, 2012Publication date: October 30, 2014Inventors: Shuji Nakanishi, Kazuhito Hashimoto, Kazuhide Kamiya
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Publication number: 20140315023Abstract: The present invention relates to a segmented graphene nanoribbon, comprising at least two different graphene segments covalently linked to each other, each graphene segment having a monodisperse segment width, wherein the segment width of at least one of said graphene segments is 4 nm or less and to a method for preparing it by polymerizing at least one polycyclic aromatic monomer compound and/or at least one oligo phenylene aromatic hydrocarbon monomer compound to form at least one polymer and by at least partially cyclodehydrogenating the one or more polymer.Type: ApplicationFiled: November 13, 2012Publication date: October 23, 2014Applicants: BASF SE, EMPA MATERIALS SCIENCE AND TECHNOLOGYInventors: Roman Fasel, Pascal Ruffieux, Klaus Muellen, Stephan Blankenburg, Jinming Cai, Xinliang Feng, Carlo Pignedoli, Daniele Passerone
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Publication number: 20140314656Abstract: The present invention relates to a method of mass production of graphene. In one embodiment, such a method may include providing a high temperature furnace for storing a molten solvent, wherein the high temperature furnace comprises an outlet disposed on the top of the high temperature furnace, and an inlet, providing a carbon source to mix with the molten solvent, precipitating the carbon to form a graphene layer on the surface of the molten solvent under a supersaturated state, and collecting the graphene layer from the outlet.Type: ApplicationFiled: February 28, 2014Publication date: October 23, 2014Inventor: Chien-Min Sung
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Publication number: 20140311967Abstract: Embodiments described herein relate to porous materials that may be employed in various filtration, purification, and/or separation applications. In some cases, the porous materials may be thin, flexible, and fabricated with control over average pore size and/or the spatial distribution of pores. Such porous materials may be useful in, for example, desalination.Type: ApplicationFiled: March 14, 2014Publication date: October 23, 2014Applicant: Massachusetts Institute of TechnologyInventors: Jeffrey Grossman, Nicola Ferralis, David Cohen-Tanugi, Shreya H. Dave
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Publication number: 20140312421Abstract: A method for growing a graphene layer on a metal foil includes placing a vessel into a chemical vapor deposition chamber, the vessel having a metal foil positioned therein. The method includes evacuating the chemical vapor deposition chamber, introducing hydrogen gas into the chamber to achieve a first pressure less than atmospheric pressure, heating the atmosphere in the chamber to anneal the metal foil, introducing methane and hydrogen into the chamber to achieve a second pressure less than atmospheric pressure.Type: ApplicationFiled: March 14, 2014Publication date: October 23, 2014Applicant: University of Southern CaliforniaInventors: Chongwu Zhou, Yi Zhang, Luyao Zhang
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Patent number: 8865111Abstract: A process for producing a filmy graphite includes the steps of forming a polyimide film having a birefringence of 0.12 or more and heat-treating the polyimide film at 2,400° C. or higher.Type: GrantFiled: October 29, 2013Date of Patent: October 21, 2014Assignee: Kaneka CorporationInventors: Yasushi Nishikawa, Mutsuaki Murakami, Kiyokazu Akahori
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Patent number: 8865110Abstract: A graphite film excelling in heat conductivity, especially, a graphite film of high heat conductivity that even when its thickness is large, would not suffer damage by heat treatment. There is provided a process for producing a graphite film, including graphitizing a raw material film of a polymer film and/or carbonized polymer film, characterized by including (i) holding the raw film in a vessel capable of direct passage of current through voltage application and (ii) applying voltage to the vessel to thereby induce electrification so that graphitization is carried out. There is further provided a process for producing a graphite film, characterized by including the step of holding the raw material film in vessel (A) being electrifiable, subsequently holding the resultant vessel (A) in vessel (B) being electrifiable and effecting current passage through the whole so that graphitization is carried out.Type: GrantFiled: October 14, 2013Date of Patent: October 21, 2014Assignee: Kaneka CorporationInventors: Yasushi Nishikawa, Shuhei Wakahara, Mutsuaki Murakami
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Patent number: 8865307Abstract: This disclosure includes a process that unexpectedly can produce very inexpensive graphene, functionalized graphenes, and a new compound called graphenol in particulate or dispersions in solvents. The process can also produce graphene layers on metallic and nonmetallic substrates. Further, the graphenol, functionalized graphenes, and graphene can be utilized to form nanocomposites that yield property improvements exceeding anything reported previously.Type: GrantFiled: June 1, 2012Date of Patent: October 21, 2014Assignee: National Nanomaterials, Inc.Inventor: Gary W. Beall
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Publication number: 20140308196Abstract: This invention relates to a method of fixing carbon dioxide by condensation polymerization in an acidic aqueous medium, thereby increasing fixation efficiency and remarkably reducing the volume of generated material compared to conventional carbon dioxide fixation methods; a polymer material prepared by the method; and a method of recovering carbon therefrom. According to the current invention, the method of fixing carbon dioxide is characterized by introducing carbon dioxide pressurized to a pressure higher than atmospheric pressure into a reactor containing a acidic aqueous medium, so that carbonic acid resulting from dissolving carbon dioxide is made into a polymer material by condensation polymerization, thereby fixing carbon dioxide, and heating the polymer material so as to recover carbon.Type: ApplicationFiled: December 4, 2012Publication date: October 16, 2014Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATIONInventor: Jang-Gyu Kim
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Publication number: 20140301936Abstract: Provided are graphene nanoribbon precursors comprising repeated units of the general formula (I) in which R1, R2 are each H, halogen, —OH, —NH2, —CN, —NO2 or a hydrocarbyl radical which has 1 to 40 carbon atoms and may be linear or branched, saturated or unsaturated and mono- or poly-substituted by halogen (F, Cl, Br, I), —OH, —NH2, —CN, and/or —NO2, where one or more CH2 groups may also be replaced by —O—, —S—, —C(O)O—, —O—C(O)—, —C(O)—, —NH— or —NR—, in which R is an optionally substituted C1C40-hydrocarbyl radical, or an optionally substituted aryl, alkylaryl or alkoxyaryl radical.Type: ApplicationFiled: October 24, 2012Publication date: October 9, 2014Applicants: BASF SE, Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V.Inventors: Matthias Georg Schwab, Klaus Muellen, Xinliang Feng, Lukas Doessel
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Publication number: 20140301921Abstract: Amine-aldehyde resins are disclosed for removing a wide variety of solids and/or ionic species from the liquids in which they are suspended and/or dissolved. These resins are especially useful as froth flotation depressants, for example in the beneficiation of value materials (e.g., bitumen, coal, or kaolin clay) to remove impurities such as sand. The resins are also useful for treating aqueous liquid suspensions to remove solid particulates, as well as for removing metallic ions in the purification of water.Type: ApplicationFiled: June 23, 2014Publication date: October 9, 2014Inventors: James T. Wright, John B. Hines, Lisa M. Arthur, Carl R. White, Kurt D. Gabrielson, Michael J. Cousin
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Publication number: 20140301935Abstract: Oligophenylene monomers for the synthesis of polymeric precursors for the preparation of graphene nanoribbons, the polymeric precursors, and methods for preparing them, as well as methods for preparing the graphene nanoribbons from the polymeric precursors and the monomers are provided.Type: ApplicationFiled: October 24, 2012Publication date: October 9, 2014Applicants: BASF SE, Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V.Inventors: Sorin Ivanovici, Matthias Georg Schwab, Xinliang Feng, Klaus Muellen
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Publication number: 20140302439Abstract: Provided are a method of manufacturing graphene, carbon nanotubes, fullerene, graphite, or a combination thereof having a regulated resistance, and a material manufactured using the method.Type: ApplicationFiled: October 9, 2013Publication date: October 9, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Jeo-young Shim, Tae-han Jeon, Kun-sun Eom, Dong-ho Lee
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Patent number: 8852809Abstract: A positive electrode for a rechargeable lithium battery capable of providing a high voltage and a high voltage rechargeable lithium battery including the same, wherein the positive electrode includes a positive active material and a capacitor-reactive carbonaceous material having a specific surface area at or between 10 m2/g and 100 m2/g.Type: GrantFiled: April 26, 2011Date of Patent: October 7, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Kyeu-Yoon Sheem, Bok-Hyun Ka, Sumihito Ishida, Da-Woon Han, Eui-Hwan Song
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Patent number: 8852379Abstract: A carbonization catalyst for forming graphene may be exfoliated from a graphene sheet by etching. A binder layer may be formed on the graphene sheet on which a carbonization catalyst is formed, to support and fix all or part of the graphene sheet. Further, the graphene sheet from which the carbonization catalyst is exfoliated may be transferred to a device. When exfoliating the carbonization catalyst from the graphene sheet, an acid may be used together with a wetting agent.Type: GrantFiled: February 2, 2012Date of Patent: October 7, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Hyeon Jin Shin, Jaeyoung Choi, Seonmi Yoon
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Patent number: 8846175Abstract: A manufacturing method of a light transmissive film includes the following steps. A film is provided, and the film includes a plurality of nano-units and has a reference direction. In addition, a plurality of first stripes parallel to each other is formed on the film by an energy beam, and the first stripes are neither perpendicular nor parallel to the reference direction.Type: GrantFiled: August 9, 2010Date of Patent: September 30, 2014Assignee: Innolux CorporationInventor: Yu-Ju Hsu
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Publication number: 20140287908Abstract: Aggregated graphene oxide includes a range of specific surface area, and a method of preparing aggregated graphene oxide includes dispersing graphene oxide in an organic solvent and adding an anti-solvent. Aggregated graphene includes a range of specific surface area, and a method of preparing aggregated graphene includes dispersing graphene oxide in an organic solvent, adding an anti-solvent, and reducing the aggregated graphene oxide. Aggregated and nitrogen-doped includes a range of specific surface area, and a method of preparing aggregated and nitrogen-doped graphene includes dispersing graphene oxide in an organic solvent, adding an anti-solvent, and photo-reacting the aggregated graphene oxide.Type: ApplicationFiled: January 30, 2014Publication date: September 25, 2014Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITYInventors: Hyoyoung LEE, Yeo Heung YOON, Chul BAIK, Keun Sik LEE
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Publication number: 20140283970Abstract: The present invention provides a method for manufacturing a large-area film, the method comprising the steps of: dispersing various fine particles in a polar solvent to prepare a dispersion; adding water to the dispersion to prepare a mixture; and adding an organic solvent capable of generating Rayleigh-Benard convection to the mixture to induce the interfacial assembly of the fine particles, thereby forming the film. The invention also provides a large-area film manufactured by the method. According to the invention, a large-area, high-purity film can be quickly manufactured by a simple solution process, and the manufactured large-area film has excellent physical and electrical properties, and thus can be used in various applications.Type: ApplicationFiled: February 22, 2014Publication date: September 25, 2014Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Sang Ouk Kim, Jong Won Shim
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Publication number: 20140271444Abstract: The present disclosure relates to a method for size-selective separation of 2-dimensional plate particles using spherical particles. Since the separation method of 2-dimensional plate particles according to the present disclosure is simple, economical and extensible to large-scale applications, it can contribute greatly to commercialization of plate particles by reducing cost and preventing deterioration of physical properties. The 2-dimensional plate particles having uniform size can be useful in such applications as transparent electrodes, solar cells, composites, drug delivery, biosensors, etc.Type: ApplicationFiled: October 25, 2013Publication date: September 18, 2014Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Sang-Soo LEE, Sinwoo KIM, Jonghwi LEE
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Patent number: 8834982Abstract: The invention relates to a carbon nanoring and a method for preparing the same. The carbon nanoring according to the present invention is composed of monolayered or multilayered coaxial carbon rings, wherein the carbon ring has a structure similar to that of a closed ring system formed by graphite sheet being rolled, and each of an axial dimension and a radial dimension of the carbon nanoring is nanoscale with the axial dimension being smaller than the radial dimension. The invention further provides a method for preparing the above carbon nanoring including calcinating in an inert atmosphere or a reducing atmosphere a layered double hydroxides obtained by intercalating a long-chain alkyl anion and a carbon source molecule, growing a carbon nanoring within a confined region between layers under the catalysis of the metal element in layers, and removing the metal and the metal oxide by dissolving in an acid to obtain the carbon nanoring.Type: GrantFiled: December 7, 2011Date of Patent: September 16, 2014Assignee: Beijing University of Chemical TechnologyInventors: Wensheng Yang, Jie Sun, Xu Chen, Haimei Liu
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Patent number: 8835046Abstract: Nanocomposite materials having at least two layers, each layer consisting of one metal oxide bonded to at least one graphene layer were developed. The nanocomposite materials will typically have many alternating layers of metal oxides and graphene layers, bonded in a sandwich type construction and will be incorporated into an electrochemical or energy storage device.Type: GrantFiled: August 9, 2010Date of Patent: September 16, 2014Assignee: Battelle Memorial InstituteInventors: Jun Liu, Daiwon Choi, Rong Kou, Zimin Nie, Donghai Wang, Zhenguo Yang
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Patent number: 8834829Abstract: The invention provides a method of making a battery anode in which a quantity of graphite powder is provided. The temperature of the graphite powder is raised from a starting temperature to a first temperature between 1000 and 2000° C. during a first heating period. The graphite powder is then cooled to a final temperature during a cool down period. The graphite powder is contacted with a forming gas during at least one of the first heating period and the cool down period. The forming gas includes H2 and an inert gas.Type: GrantFiled: August 28, 2012Date of Patent: September 16, 2014Assignee: UT-Battelle, LLCInventors: Cristian Ion Contescu, Nidia C. Gallego, Jane Y. Howe, Harry M. Meyer, III, Edward Andrew Payzant, David L. Wood, III, Sang Young Yoon, Matthew R. Denlinger
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Publication number: 20140255292Abstract: A method for producing a graphite material for lithium ion batteries, including a step for exothermically graphitizing a carbon material by directly applying an electric current therethrough. The carbon material is obtained by heating at a temperature in the range of 800° C.-1500° C. inclusive and subsequently pulverizing an organic carbon starting material, has a compact powder resistivity of 0.3 ?cm or less when compressed to a density of 1.4 g/cm3, has an angle of repose in the range of 20° to 50° inclusive, and has a particle size (D90) in the volume-based particle size distribution measured using laser diffraction of 120 ?m or less. The average surface interval (d002) of a surface (002) of the carbon material after graphitization, measured using x-ray diffraction, is in the range of 0.3354 nm-0.3450 nm inclusive.Type: ApplicationFiled: October 19, 2012Publication date: September 11, 2014Applicant: SHOWA DENKO K.K.Inventors: Yasuaki Wakizaka, Yuuichi Kamijou, Masataka Takeuchi, Yoshiyuki Nishimura, Ryusuke Miura, Takayuki Fukai
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Publication number: 20140248207Abstract: Disclosed are a method of manufacturing a graphene-carbon nanotube nanostructure which includes mixing graphite, a catalytic metal, and an ionic liquid, and then radiating microwaves on the mixture, and a graphene-carbon nanotube nanostructure manufactured using the method.Type: ApplicationFiled: October 16, 2012Publication date: September 4, 2014Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Il-Kwon Oh, Vadahanambi Sridhar, Hyun-Jun Kim
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Publication number: 20140241975Abstract: The invention refers to a process for the production of graphene nanoribbons in the presence of an anisotropic metal surface which induces a spatial orientation of the nanoribbons.Type: ApplicationFiled: September 27, 2012Publication date: August 28, 2014Inventors: Dingyong Zhong, Lifeng Chi, Helmut Zacharias, Harald Fuchs, Klaus Mullen, Xinliang Feng
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Patent number: 8815399Abstract: Provided is a carbon nanotube (CNT) transparent conductive layer having a loop pattern in which a plurality of loops are at least partially connected to one another, and a fabrication method thereof. The loops in the pattern are generated by a spray-coating method and partially connected with one anther, and thus improving transparency and conductivity of the CNT transparent conductive layer. In Addition, the CNT transparent conductive layer has conductivity and sheet resistance highly suitable for a transparent electrode.Type: GrantFiled: October 9, 2008Date of Patent: August 26, 2014Assignee: Top Nanosys, Inc.Inventors: Sang Keun Oh, Kyoung Hwa Song, Da Jeong Jeong, Do Hyeong Park, Dong-Myeon Lee
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Patent number: 8815398Abstract: A carbon nanotube film includes a plurality of first carbon nanotubes and a plurality of second carbon nanotubes. The first carbon nanotubes are orientated primarily along a same direction. The second carbon nanotubes have different orientations from that of the plurality of first carbon nanotubes. Each of at least one portion of the second carbon nanotubes contacts with at least two adjacent first carbon nanotubes.Type: GrantFiled: August 20, 2009Date of Patent: August 26, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Kai-Li Jiang, Chen Feng, Lin Xiao, Zhuo Chen, Liang Liu, Shou-Shan Fan, Qun-Qing Li, Li Qian, Kai Liu, Yang Wei
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Publication number: 20140234200Abstract: In various embodiments, the present disclosure provides methods of forming graphene films by: (1) depositing a non-gaseous carbon source onto a catalyst surface; (2) exposing the non-gaseous carbon source to at least one gas with a flow rate; and (3) initiating the conversion of the non-gaseous carbon source to the graphene film, where the thickness of the graphene film is controllable by the gas flow rate. Additional embodiments of the present disclosure pertain to graphene films made in accordance with the methods of the present disclosure.Type: ApplicationFiled: July 30, 2012Publication date: August 21, 2014Applicant: William Marsh Rice UniversityInventors: James Tour, Zhengzong Sun, Zheng Yan, Gedeng Ruan, Zhiwei Peng
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Publication number: 20140231707Abstract: A graphite material suitable as an electrode material for non-aqueous electrolytic secondary batteries; a method for producing the same and a carbon material for battery electrodes; and a secondary battery. The graphite material includes crystallite graphite particles wherein an oxygen amount (a) (mass %) in a region from a particle surface of the graphite material to a depth of 40 nm is within a range of 0.010?(a)?0.04 as determined by a peak intensity of O1s obtained by HAX-PES measurement using a hard X-ray of 7,940 eV.Type: ApplicationFiled: October 5, 2012Publication date: August 21, 2014Inventors: Akinori Sudoh, Yuuichi Kamijou, Masako Tanaka, Tomohiro Abe
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Patent number: 8808858Abstract: A diamondlike carbon hard multilayer formed film body comprises a substrate, a diamondlike carbon film mainly composed of diamondlike carbon, and an intermediate layer between the substrate and the diamondlike carbon film. The diamondlike carbon film is composed of, in order from the substrate side, a first diamondlike carbon film and a second diamondlike carbon film. The surface hardness of the first diamondlike carbon film is within the range from not less than 10 GPa to not more than 40 GPa based on nanoindentation test, and the surface hardness of the second diamondlike carbon film is within the range from more than 40 GPa to not more than 90 GPa based on nanoindentation test.Type: GrantFiled: June 15, 2009Date of Patent: August 19, 2014Assignee: Kobe Steel, Ltd.Inventors: Koichiro Akari, Akitoshi Oota
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Patent number: 8808609Abstract: The present invention has an object of providing the carbon fiber (or the nonwoven fabric configured of the aforementioned carbon fiber) of which the surface area, the graphitization degree, and the fiber diameter are large, high, and small, respectively, and yet of which dispersion is small. The method of producing the carbon fiber nonwoven fabric includes a dispersion liquid preparing step of preparing a dispersion liquid containing resin and pitch, an electrospinning step of producing the nonwoven fabric that is comprised of carbon fiber precursors with electrospinning from the aforementioned dispersion liquid, and a modifying step of modifying the carbon fiber precursors of the nonwoven fabric obtained in the aforementioned electrospinning step into the carbon fiber.Type: GrantFiled: September 17, 2010Date of Patent: August 19, 2014Assignees: TEC One Co., Ltd., Shinshu UniversityInventors: Takahiro Kitano, Fujio Okino
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Patent number: 8808856Abstract: Provided is a method for uniformly producing a carbon film at a low cost with low power consumption. The method for producing a carbon film, including: a step of disposing a cylindrical member having an opening in part thereof in a vacuum chamber; a step of disposing a substrate inside the cylindrical member; a step of introducing a gas for carbon film production into the vacuum chamber; and a step of applying a voltage for plasma generation to the cylindrical member to thereby generate a plasma in the cylindrical member and to produce the carbon film on the surface of the substrate by the plasma.Type: GrantFiled: October 13, 2005Date of Patent: August 19, 2014Assignee: Pureron Japan Co., Ltd.Inventor: Masanori Haba