Graphite Patents (Class 423/448)
  • Patent number: 10773955
    Abstract: In one aspect, a composite material is disclosed herein that includes graphene platelets dispersed in a matrix. In some cases, the graphene platelets are randomly oriented within the matrix. The composite material can provide improved thermal conductivity and may be formed into heat spreaders or other thermal management devices to provide improved cooling to electronic, electrical components and semiconductor devices.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: September 15, 2020
    Assignee: THE BOEING COMPANY
    Inventor: Namsoo P. Kim
  • Patent number: 10770719
    Abstract: A negative electrode active material includes a carbon material including boron and a silicon material including at least one selected from silicon and silicon oxide. The silicon material does not include boron. A peak of a B1s spectrum of the carbon material occurs at a binding energy of 187.0 eV or more and 192.0 eV or less, the B1s spectrum being measured by X-ray photoelectron spectroscopy. The ratio of the area of the peak of the B1s spectrum of the carbon material which occurs at a binding energy of 187.0 eV or more and 192.0 eV or less, the B1s spectrum being measured by X-ray photoelectron spectroscopy, to the total area of peaks of the B1s spectrum which occur at a binding energy of 184.0 eV or more and 196.5 eV or less is 50% or more.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: September 8, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Kano, Junko Matsushita, Nobuhiko Hojo
  • Patent number: 10767062
    Abstract: Making a carbon aerogel involves 3-D printing an ink to make a printed part, removing the solvent from the printed part, and carbonizing the printed part (with the solvent removed) to make the aerogel. The ink is based on a solution of a resorcinol-formaldehyde resin (RF resin), water, and an organic thickener. Advantageously, the RF resin contains an acid catalyst, which tends to produce carbon aerogels with higher surface areas upon activation than those produced from methods involving an ink composition containing a base catalyzed resin.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: September 8, 2020
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Swetha Chandrasekaran, Theodore F. Baumann, Marcus A. Worsley
  • Patent number: 10750619
    Abstract: Graphene oxide is used as an insulation barrier layer for metal deposition. After patterning and modification, the chemical characteristics of graphene oxide are induced. It can be used as the catalyst for electroless plating in the metallization process, so that the metal is only deposited on the patterned area. It provides the advantages of improving reliability and yield. The metallization structure includes a substrate, a graphene oxide catalytic layer, and a metal layer. It may be widely applied to the metallization of the fine pitch metal of a semiconductor package as well as the fine pitch wires of a printed circuit board (PCB), touch panels, displays, fine electrodes of solar cells, and so on.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: August 18, 2020
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventor: Ming-Huei Yen
  • Patent number: 10734650
    Abstract: Provided is a carbonaceous material used in a negative electrode of a non-aqueous electrolyte secondary battery that shows favorable charge/discharge capacities and low resistance and having favorable resistance to oxidative degradation. The carbonaceous material has an average interplanar spacing d002 of the (002) plane of 0.36 to 0.42 nm calculated by using the Bragg equation according to a wide-angle X-ray diffraction method, a specific surface area of 20 to 65 m2/g obtained by a nitrogen adsorption BET three-point method, a nitrogen element content of 0.3 mass % or less, an oxygen element content of 2.5 mass % or less, and an average particle diameter of 1 to 4 ?m according to a laser scattering method.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: August 4, 2020
    Assignee: KURARAY CO., LTD.
    Inventors: Tomohiro Kawakami, Sayaka Ide, Takafumi Izawa, Taketoshi Okuno, Jun-Sang Cho, Hideharu Iwasaki
  • Patent number: 10717652
    Abstract: A method for preparing large graphene sheets in large scale includes steps of: under a mild condition, processing graphite powders with intercalation through an acid and an oxidant; washing away metal ions and inorganic ions in the graphite powders with dilute hydrochloric acid, then filtering and drying; and, finally processing with a heat treatment. The present invention breaks through a series of bottlenecks restricting an efficient preparation of graphene that result from a traditional method of using large amounts of deionized water to wash graphite oxide to be neutral, and easily realizes a batch production. A radial scale of the prepared graphene sheets is distributed from 20 um to 200 um.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: July 21, 2020
    Assignee: SHANGHAI KYORENENEW MATERIALS TECHNOLOGY CO., LTD
    Inventors: Yongxiao Bai, Xinjun Hu, Yan Sha, Xiaolin Sha
  • Patent number: 10703635
    Abstract: Provided is a process for producing isolated graphene sheets from a supply of coke or coal powder containing therein domains of hexagonal carbon atoms and/or hexagonal carbon atomic interlayers. The process comprises: (a) subjecting the supply of coke or coal powder to a supercritical fluid at a first temperature and a first pressure for a first period of time in a pressure vessel and then (b) rapidly depressurizing the supercritical fluid at a fluid release rate sufficient for effecting exfoliation and separation of the coke or coal powder to produce isolated graphene sheets, wherein the coke or coal powder is selected from petroleum coke, coal-derived coke, mesophase coke, synthetic coke, leonardite, anthracite, lignite coal, bituminous coal, or natural coal mineral powder, or a combination thereof.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: July 7, 2020
    Assignee: Global Graphene Group, Inc.
    Inventors: Aruna Zhamu, Bor Z. Jang
  • Patent number: 10692660
    Abstract: An electrochemical capacitor includes a pair of electrodes and an electrolyte disposed between the pair of electrodes. At least a first electrode of the pair of electrodes includes a graphene framework film, and the graphene framework film includes interconnected graphene sheets with nanopores formed in the graphene sheets.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: June 23, 2020
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Xiangfeng Duan, Yuxi Xu
  • Patent number: 10693140
    Abstract: The present invention relates to a negative electrode and a secondary battery including the same, and particularly, to a negative electrode which includes a negative electrode active material layer including first active material particles each in the form of a secondary particle in which a plurality of primary particles are agglomerated; and second active material particles, wherein the second active material particles have an average particle size (D50) equal to or less than an average particle size (D50) of the primary particles, the first active material particle is artificial graphite, and the second active material particle is a graphite-based particle, and a secondary battery, a battery module, and a battery pack including the same.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: June 23, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Lilin Piao, Eun Kyung Kim, Sun Young Shin, Su Min Lee, Su Yeon Lee, Chang Ju Lee
  • Patent number: 10679765
    Abstract: A new solvent-based method is presented for making low-cost composite graphite electrodes containing a thermoplastic binder. The electrodes, termed thermoplastic electrodes (TPEs), are easy to fabricate and pattern, give excellent electrochemical performance, and have high conductivity (1500 S m?1). The thermoplastic binder enables the electrodes to be hot embossed, molded, templated, and/or cut with a CO2 laser into a variety of intricate patterns. These electrodes show a marked improvement in peak current, peak separation, and resistance to charge transfer over traditional carbon electrodes. The impact of electrode composition, surface treatment (sanding, polishing, plasma treatment), and graphite source were found to impact fabrication, patterning, conductivity, and electrochemical performance. Under optimized conditions, electrodes generated responses similar to more expensive and difficult to fabricate graphene and highly oriented pyrolytic graphite electrodes.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: June 9, 2020
    Assignee: Colorado State University Research Foundation
    Inventors: Charles S. Henry, Kevin Klunder
  • Patent number: 10636539
    Abstract: A compound represented by the following general formula (1) is used as a precursor of a graphene nanoribbon: where X's are independent of each other and are leaving groups, R's are independent of one another and are hydrogen atoms, fluorine atoms, chlorine atoms, or 1-12C straight-chain, branched-chain, or cyclic alkyl groups, and each of p, q, r, and s is an integer in the range of 0 to 5.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: April 28, 2020
    Assignee: FUJITSU LIMITED
    Inventor: Manabu Ohtomo
  • Patent number: 10559846
    Abstract: A negative-electrode active material comprises a graphite including at least boron and fluorine. The fluorine is disposed at least on a surface of the graphite. A ratio R satisfies 0.5?R?1, where R=SBB/SB, and SB denotes a total peak area of a boron 1s spectrum of the graphite obtained by X-ray photoelectron spectroscopy, and SBB denotes a peak area of all spectra each having a peak in a binding energy range of not less than 184.0 eV and not more than 188.5 eV in the boron 1s spectrum.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: February 11, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takayuki Nakatsutsumi, Akira Kano, Junko Matsushita, Nobuhiko Hojo
  • Patent number: 10550001
    Abstract: Provided is a metallic impurity-free graphite material utilizing Joule heat generation with well-balanced resistances at room temperature and at high temperatures. The graphite material has a specific resistance at 25° C. (?25) of 10.0 ??·m or more and 12.0 ??·m or less; a specific resistance at 1600° C. (?1600) of 9.5 ??·m or more and 11.0 ??·m or less; a ratio (?1600/?25) of specific resistance at 1600° C. to that at 25° C. of 0.85 or more and 1.00 or less; a temperature at which the minimum specific resistance (?min) appears of 500° C. or higher and 800° C. or lower; a ratio (?min/?25) of the minimum specific resistance to the specific resistance at 25° C. of 0.70 or more and 0.80 or less; and a bulk density of 1.69 g/cm3 or more and 1.80 g/cm3 or less.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: February 4, 2020
    Assignee: NIPPON TECHNO-CARBON CO., LTD.
    Inventors: Hidehiko Usuba, Toshiya Suzuki
  • Patent number: 10505193
    Abstract: In some embodiments, the present disclosure pertains to methods of producing a graphene material by exposing a polymer to a laser source. In some embodiments, the exposing results in formation of a graphene from the polymer. In some embodiments, the methods of the present disclosure also include a step of separating the formed graphene from the polymer to form an isolated graphene. In some embodiments, the methods of the present disclosure also include a step of incorporating the graphene material or the isolated graphene into an electronic device, such as an energy storage device. In some embodiments, the graphene is utilized as at least one of an electrode, current collector or additive in the electronic device. Additional embodiments of the present disclosure pertain to the graphene materials, isolated graphenes, and electronic devices that are formed by the methods of the present disclosure.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: December 10, 2019
    Assignee: WILLIAM MARSH RICE UNIVERSITY
    Inventors: James M. Tour, Jian Lin, Zhiwei Peng, Carter Kittrell
  • Patent number: 10494508
    Abstract: A method produces a molded part from carbon containing carbon fibers in an amount of less than 20% by weight. The method includes comminuting waste parts or scrap parts formed from a carbon fiber-reinforced synthetic material, a carbon fiber reinforced carbon or a carbon fiber reinforced concrete. A mixture is produced from the comminuted product, a binder such as pitch, a carbon material such as coke and optionally one or more additives, wherein the mixture contains less than 20% by weight of fibers. The mixture is molded into a molded part and the molded part is carbonized. Optionally, the molded carbonized part is impregnated with an impregnating agent. Finally and optionally, the molded carbonized part or the molded part impregnated part is graphitized.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: December 3, 2019
    Assignee: Showa Denko Carbon Germany GmbH
    Inventors: Martin Christ, Oswin Oettinger, Reiner Bode, Alain Prefontaine, Georg Schwaiger
  • Patent number: 10494263
    Abstract: A method for preparing biomass graphene by using cellulose as a raw material includes preparing a catalyst solution, carrying out ionic coordination and high-temperature deoxidization on cellulose and a catalyst so as to obtain a precursor, carrying out thermal treatment and pre-carbonization, and carrying out acid treatment and drying to obtain the graphene. The graphene is uniform in morphology with a single-layer or multi-layer two-dimensional layered structure having a dimension of 0.5 ?m to 2 ?m, and an electric conductivity of 25000 S/m to 45000 S/m. The graphene can be applied to electrode materials of super capacitors and lithium ion batteries, and can also be added to resin and rubber as an additive so as to improve physical properties of the resin and the rubber.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: December 3, 2019
    Assignees: HEILONGJIANG UNIVERSITY, JINAN SHENGQUAN GROUP SHARE HOLDING CO, LTD
    Inventors: Honggang Fu, Lei Wang, Yilin Tang, Jinzhu Zhang, Yingfu Zheng, Baojiang Jiang
  • Patent number: 10464025
    Abstract: The purpose is to produce a molded filter body using graphene having water passage holes with a desired size by an easy process. A method for producing a molded filter body having a layer of graphene 2 as a filter medium, includes the steps of: forming a layer of a support 5 on a surface of graphite 1; forming support water passage holes in the layer of the support 5; peeling the layer of the support 5 from the graphite 1 in a state of attaching the layer of graphene 2 on the surface of the graphite 1 to the layer of the support 5; and holding the layer of graphene 2 by heating at a low temperature for a predetermined time in the air containing oxygen at 160 to 250° C. and forming graphene water passage holes.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: November 5, 2019
    Assignees: SHINSHU UNIVERSITY, KOTOBUKI TSUSHOU CO., LTD.
    Inventors: Katsumi Kaneko, Toshio Takagi, Katsuyuki Murata
  • Patent number: 10431829
    Abstract: The present invention relates to a negative electrode active material for secondary batteries, and a negative electrode, an electrode assembly and a secondary battery including the same. The negative electrode active material includes polyhedral crystalline carbon, a first surface treatment layer disposed on a surface of the crystalline carbon and including amorphous carbon or oxidized crystalline carbon, and a second surface treatment layer disposed on a surface of the first surface treatment layer and including a polyacrylic acid ester copolymer, thereby improving output characteristics of batteries based on increased mobility of electrons resulting from surface-to-surface contact between active materials, controlling reactivity with an electrolyte, and enhancing high-temperature storage performance of batteries.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: October 1, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Su Min Lee, Sun Young Shin, Su Yeon Lee, Eun Kyung Kim
  • Patent number: 10431824
    Abstract: In order to provide a negative electrode carbon material capable of providing a lithium secondary battery improved in the capacity and the rate characteristic, there are carried out a first heat treatment of subjecting graphite particles to a heat treatment in an oxidizing atmosphere, and following the first heat treatment, a second heat treatment of subjecting the resulting graphite particles to a heat treatment in an inert gas atmosphere at a higher temperature than in the first heat treatment.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: October 1, 2019
    Assignee: NEC Corporation
    Inventors: Qian Cheng, Noriyuki Tamura
  • Patent number: 10376845
    Abstract: Some embodiments comprise membranes comprising a first layer comprising a porous graphene-based material; a second layer comprising a porous graphene-based material; a channel positioned between the first layer and the second layer, wherein the channel has a tunable channel diameter; and at least one spacer substance positioned in the channel, wherein the spacer substance is responsive to the environmental stimulus. In some cases, the membranes have more than two layers of porous graphene-based material. Permeability of a membrane can be altered by exposing the membrane to an environmental stimulus. Membranes can be used in methods of water filtration, immune-isolation, timed drug release (e.g., sustained or delayed release), hemodialysis, or hemofiltration.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: August 13, 2019
    Assignee: Lockheed Martin Corporation
    Inventors: Jacob Louis Swett, Sarah M. Simon, Peter V. Bedworth
  • Patent number: 10361426
    Abstract: The present disclosure relates to a secondary graphite particle comprising an initial natural graphite particle of excellent high capacity and output characteristic, aggregated, bonded or assembled with an initial artificial graphite particle of excellent cycle characteristic and swelling characteristic, thus having superior rollability that leads into increased density, a negative electrode using the secondary graphite particle as a negative electrode active material, and a secondary lithium battery comprising the negative electrode. Accordingly, the secondary lithium battery comprising the secondary graphite particle as described above as the negative electrode active material has an effect of enhanced high rate charging and discharging capability, cycle characteristic and swelling characteristic.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: July 23, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Jun Hyuk Song, Eun Kyung Kim, Dong Sub Jung, Sang Wook Woo, Ye Ri Kim, Ju Ho Chung
  • Patent number: 10325762
    Abstract: A C-containing FePt-based sputtering target for forming a magnetic recording film, wherein a ratio of an X-ray diffraction peak intensity of a graphite (002) plane in a cross section perpendicular to a sputtering surface relative to an X-ray diffraction peak intensity of a graphite (002) plane in a plane horizontal to a sputtering surface is 2 or more. A magnetic recording layer is configured from a magnetic phase such as an Fe—Pt alloy and a nonmagnetic phase that separates the magnetic phase, and the sputtering target is a ferromagnetic material sputtering target in which carbon is used as a nonmagnetic phase material. When sputtered, the ferromagnetic material sputtering target is effective in preventing the generation of particles caused by an abnormal discharge originating from carbon, which is prone to aggregate.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: June 18, 2019
    Assignee: JX Nippon Mining & Metals Corporation
    Inventor: Shin-ichi Ogino
  • Patent number: 10309027
    Abstract: The present invention provides a method for producing a solution of nanosheets, comprising the step of contacting an intercalated layered material with a polar aprotic solvent to produce a solution of nanosheets, wherein the intercalated layered material is prepared from a layered material selected from the group consisting of a transition metal dichalcogenide, a transition metal monochalcogenide, a transition metal trichalcogenide, a transition metal oxide, a metal halide, an oxychalcogenide, an oxypnictide, an oxyhalide of a transition metal, a trioxide, a perovskite, a niobate, a ruthenate, a layered III-VI semiconductor, black phosphorous and a V-VI layered compound. The invention also provides a solution of nanosheets and a plated material formed from nanosheets.
    Type: Grant
    Filed: February 16, 2015
    Date of Patent: June 4, 2019
    Assignee: UCL Business PLC
    Inventors: Patrick Linden Cullen, Neal Skipper, David Buckley, Christopher Howard
  • Patent number: 10287168
    Abstract: Disclosed is a method of manufacturing graphene material, including steps of first oxidation, first heating, second heating, second oxidation, separation, drying, first ultrasonic vibration, reduction, second ultrasonic vibration, heating, and filtration. The first oxidation and the second oxidation respectively employ the first oxidant and the second oxidant with different strength of oxidation to appropriately control the range of the ratio of carbon vs. oxygen content in the graphene oxide. Therefore, the resultant graphene material through the reduction process has resistivity within 1.45˜150 ?/cm.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: May 14, 2019
    Assignee: NATIONAL TAIPEI UNIVERSITY OF TECHNOLOGY
    Inventors: Kuo Yuan Hwa, Syang Peng Rwei
  • Patent number: 10276877
    Abstract: A positive electrode for an air battery and an air battery using the positive electrode are provided, that make it possible to inhibit an electrolyte solution decrease in the battery and prevent the problems associated with the electrolyte solution decrease without causing an increase in manufacturing costs. A positive electrode for an air battery includes an expanded graphite sheet. It is desirable that the expanded graphite sheet contain expanded graphite in an amount of 80 mass % or greater. It is desirable that the expanded graphite have a bulk density of from 0.2 Mg/m3 to 2.0 Mg/m3. It is desirable that the expanded graphite sheet have a thickness of from 0.1 mm to 3.0 mm.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: April 30, 2019
    Assignees: NATIONAL INSTITUTE OF TECHNOLOGY, TOYO TANSO CO., LTD.
    Inventors: Hiroshi Okano, Masashi Yoda, Takuro Tsuruoka, Toshihiro Hosokawa, Nobuya Misaki
  • Patent number: 10246334
    Abstract: A method of producing a heterophase graphite, including the steps of (A) providing a silicon carbide single-crystal substrate; (B) placing the silicon carbide single-crystal substrate in a graphite crucible and then in a reactor to undergo an air extraction process; and (C) performing a desilicification reaction on the silicon carbide single-crystal substrate in an inert gas atmosphere to obtain 2H graphite and 3R graphite, so as to directly produce lumpy (sheetlike, crushed, particulate, and powderlike) 2H graphite and 3R graphite, and preclude secondary contamination of raw materials which might otherwise occur because of a crushing step, an oxidation step, and an acid rinsing step.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: April 2, 2019
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dai-Liang Ma, Cheng-Jung Ko, Bang-Ying Yu, Tsao-Chun Peng
  • Patent number: 10230111
    Abstract: The present invention relates to preparation of a highly dispersible graphene powder. Further, the present invention includes providing an electrode for a lithium ion battery having good output characteristics and cycle characteristics by utilizing a highly dispersible graphene powder. The present invention also includes providing a graphene powder having a specific surface area of 80 m2/g or more to 250 m2/g or less as measured by BET measurement, and an oxygen-to-carbon element ratio of 0.09 or more to 0.30 or less as measured by X-ray photoelectron spectroscopy.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: March 12, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Hanxiao Yang, Eiichiro Tamaki, Yasuo Kubota
  • Patent number: 10190242
    Abstract: This application describes a method of preparation of a natural graphene cellulose blended spunbond nonwoven fabric, which comprises using a graphite powder as a raw material for preparing a graphene solution, adding the graphene solution to a slurry formed by mixing and dissolving a wood pulp with N-methylmorpholine N-oxide (NMMO), removing the water content thereof to form a spinning dope, and then directly preparing the natural graphene cellulose blended spunbond nonwoven fabric by a spunbond process. The present method does not require a highly toxic hydrazine hydrate solution. Further, by increasing the adding ratio of the graphene solution in the manufacturing process, control of the antistatic properties and thermal transferring function can be achieved, and thereby various requirements of different consumers can be satisfied. Besides, the fabric can decompose naturally after being used, and thus the product is harmless, natural, and environmentally friendly.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: January 29, 2019
    Assignee: ACELON CHEMICALS AND FIBER CORPORATION
    Inventors: Wen-Tung Chou, Ming-Yi Lai, Kun-Shan Huang, Shao-Hua Chou, Chia-Yu Hsu
  • Patent number: 10190243
    Abstract: This application describes a method of preparation of a natural graphene cellulose blended meltblown nonwoven fabric, which comprises using a graphite powder as a raw material for preparing a graphene solution, adding the graphene solution to a slurry formed by mixing and dissolving a wood pulp with N-methylmorpholine N-oxide (NMMO), removing the water content thereof to form a spinning dope, and then directly preparing the natural graphene cellulose blended meltblown nonwoven fabric by a meltblown process. The present method does not require a highly toxic hydrazine hydrate solution. Further, by increasing the adding ratio of the graphene solution in the manufacturing process, control of the antistatic properties and thermal transferring function can be achieved, and thereby various requirements of different consumers can be satisfied. Besides, the fabric can decompose naturally after being used, and thus the product is harmless, natural, and environmentally friendly.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: January 29, 2019
    Assignee: ACELON CHEMICALS AND FIBER CORPORATION
    Inventors: Wen-Tung Chou, Ming-Yi Lai, Kun-Shan Huang, Shao-Hua Chou, Chia-Yu Hsu
  • Patent number: 10173898
    Abstract: Graphene is chemically modified by a process resulting in the introduction of functional groups located only at an edge of the graphene plane. The functionalized graphene finds uses in numerous applications and further chemical synthesis, including a process for coupling an organic or inorganic moiety to the graphene plane via the edge-located functional group. The disclosed products and processes provide highly flexible platforms for the integration of graphene into a variety of applications.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: January 8, 2019
    Inventors: Christopher Blanford, Mirja Wehner, Sabine Flitsch
  • Patent number: 10081550
    Abstract: Provided is a method of producing isolated graphene sheets from a supply of coke or coal powder containing therein domains of hexagonal carbon atoms and/or hexagonal carbon atomic interlayers. The method comprises: (a) dispersing particles of the coke or coal powder in a liquid medium containing therein an optional surfactant or dispersing agent to produce a suspension or slurry, wherein the coke or coal powder is selected from petroleum coke, coal-derived coke, meso-phase coke, synthetic coke, leonardite, anthracite, lignite coal, bituminous coal, or natural coal mineral powder, or a combination thereof; and (b) exposing the suspension or slurry to ultrasonication at an energy level for a sufficient length of time to produce the isolated graphene sheets.
    Type: Grant
    Filed: June 26, 2016
    Date of Patent: September 25, 2018
    Assignee: Nanotek Instruments, Inc.
    Inventors: Aruna Zhamu, Bor Z Jang
  • Patent number: 10079392
    Abstract: A metal-doped graphene and a growth method of the same are provided. The metal-doped graphene includes graphene and metal elements, wherein the metal elements accounts for 1-30 at % based on the total content of the metal-doped graphene. The growth method includes performing a PECVD by using a carbon precursor, a metal precursor, and a group VI precursor in order to grow the metal-doped graphene.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: September 18, 2018
    Assignee: Industrial Technology Research Institute
    Inventors: Kun-Ping Huang, Yu-Wen Chi
  • Patent number: 10072355
    Abstract: A method of forming graphene single crystal domains on a carbon substrate is described.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: September 11, 2018
    Assignee: Board of Regents, The University of Texas System
    Inventors: Luigi Colombo, Rodney S. Ruoff, Yufeng Hao
  • Patent number: 10069139
    Abstract: Disclosed is a facile and cost effective method of producing metal-doped nano silicon powder or graphene-doped metal-doped silicon nano powder having a particle size smaller than 100 nm. The method comprises: (a) preparing a silicon precursor/metal precursor/graphene nano composite; (b) mixing the silicon precursor/metal precursor/graphene nano composite with a desired quantity of magnesium; (c) converting the silicon precursor to form a mixture of graphene-doped silicon and a reaction by-product through a thermal and/or chemical reduction reaction; and (d) removing the reaction by-product from the mixture to obtain graphene-doped metal-doped silicon nano powder.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: September 4, 2018
    Assignee: Nanotek Instruments, Inc.
    Inventors: Yanbo Wang, Aruna Zhamu, Bor Z. Jang
  • Patent number: 10057986
    Abstract: A thermal overload device 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: Grant
    Filed: March 15, 2017
    Date of Patent: August 21, 2018
    Assignee: THE TRUSTEES OF PRINCETON UNIVERSITY
    Inventors: Robert K. Prud'Homme, Ilhan A. Aksay
  • Patent number: 10041168
    Abstract: A method of forming graphene includes placing a substrate in a processing chamber and introducing a cleaning gas including hydrogen and nitrogen into the processing chamber. The method also includes introducing a carbon source into the processing chamber and initiating a microwave plasma in the processing chamber. The method further includes subjecting the substrate to a flow of the cleaning gas and the carbon source for a predetermined period of time to form the graphene.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: August 7, 2018
    Assignee: California Institute of Technology
    Inventors: David A. Boyd, Nai-Chang Yeh
  • Patent number: 10030161
    Abstract: A rapid, scalable methodology for graphene dispersion with a polymer-organic solvent solution and subsequent solvent exchange, as can be utilized without centrifugation, to enhance graphene concentration.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: July 24, 2018
    Assignee: Northwestern University
    Inventors: Mark C. Hersam, Yu Teng Liang
  • Patent number: 10023468
    Abstract: Systems and methods for synthesizing continuous graphene sheets are provided. The systems and methods include passing a catalyst substrate through a heated chemical vapor deposition chamber and exposing the substrate to a reaction gas mixture of hydrogen and hydrocarbon at a preselected location within the chamber. The reaction gas mixture can include hydrogen having a partial pressure of between about 0 Torr and 20 Torr, hydrocarbon having a partial pressure of between about 20 mTorr and about 10 Torr, and one or more buffer gases. The buffer gases can include argon or other noble gases to maintain atmospheric pressure within the chemical deposition chamber. The resulting graphene can be made with continuous mono and multilayers (up to six layers) and have single crystalline hexagonal grains with a preselected nucleation density and domain size for a range of applications.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: July 17, 2018
    Assignee: UT-Battelle, LLC
    Inventors: Ivan V. Vlassiouk, Sergei N. Smirnov, William H. Peter, Adrian S. Sabau, Sheng Dai, Pasquale F. Fulvio, Ilia N. Ivanov, Nickolay V. Lavrik, Panagiotis G. Datskos
  • Patent number: 10020191
    Abstract: A method for characterizing carbon nanotubes comprising: providing a conductive substrate and applying an insulating layer on the conductive substrate; forming a carbon nanotube structure on a surface of the insulating layer, the carbon nanotube structure includes at least one carbon nanotube; placing the carbon nanotube structure under a scanning electron microscope, adjusting the scanning electron microscope with an accelerating voltage ranging from 5˜20 KV, a dwelling time ranging 6˜20 microseconds and a magnification ranging from 10000˜100000 times; taking photos of the carbon nanotube structure with the scanning electron microscope; and, obtaining a photo of the carbon nanotube structure, the photo shows the at least one carbon nanotube and a background.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: July 10, 2018
    Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Dong-Qi Li, Yang Wei, Kai-Li Jiang, Shou-Shan Fan
  • Patent number: 10011723
    Abstract: A coating comprising silicon-doped graphene layers wherein the graphene is in the form of horizontally-aligned graphene nanosheets.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: July 3, 2018
    Assignee: UNIVERSITY OF ULSTER
    Inventor: Pagona Papakonstantinou
  • Patent number: 9968890
    Abstract: A filter molded article using a graphene with water passage holes having a desired size is produced in a simple step. A method for producing a filter molded article having a graphene layer as a filtering material is characterized by including a step of forming a support 3 layer on a surface of a graphene 1 layer formed on initial substrates for a graphene 2 and 9, a step of forming water passage holes in the support 3 layer, a step of removing the initial substrates for a graphene 2 and 9, and a step of forming water passage holes by heating and holding the graphene 1 layer at a low temperature in the air containing oxygen of 160 to 250° C. for a predetermined time.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: May 15, 2018
    Assignees: SHINSHU UNIVERSITY, KOTOBUKI TSUSHOU CO., LTD.
    Inventors: Katsumi Kaneko, Toshio Takagi, Katsuyuki Murata
  • Patent number: 9908995
    Abstract: A nanocomposite composition having a silicone elastomer matrix having therein a filler loading of greater than 0.05 wt %, based on total nanocomposite weight, wherein the filler is functional graphene sheets (FGS) having a surface area of from 300 m2/g to 2630 m2/g; and a method for producing the nanocomposite and uses thereof.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: March 6, 2018
    Assignee: The Trustees of Princeton University
    Inventors: Shuyang Pan, Ilhan A. Aksay, Robert K. Prud'Homme
  • Patent number: 9868105
    Abstract: A spinel-type lithium titanium oxide/graphene composite and a method of preparing the same are provided. The method can be useful in simplifying a manufacturing process and shortening a manufacturing time using microwave associated solvothermal reaction and post heat treatment, and the spinel-type lithium titanium oxide/graphene composite may have high electrochemical performances due to its excellent capacity and rate capability and long lifespan, and thus be used as an electrode material of the lithium secondary battery.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: January 16, 2018
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Kwang Bum Kim, Hyun Kyung Kim, Ji Young Kim
  • Patent number: 9862608
    Abstract: A patterned graphene or graphitic body is produced by providing a three-dimensionally patterned carbonaceous body; coating the body with a catalytic metal whereby is formed a coating having an inner surface proximal the body and an outer surface distal the body; and annealing the coated body under time and temperature conditions effective to form a graphene or graphitic layer on the outer surface of the catalytic metal coating.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: January 9, 2018
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Ronen Polsky, Xiaoyin Xiao, David Bruce Burckel, David R. Wheeler, Susan M. Brozik, Thomas Edwin Beechem
  • Patent number: 9850133
    Abstract: The green synthesis of reduced graphene oxide nanoparticles using Nigella sativa seed extract comprises the steps of mixing a quantity of soot or other carbon source in an acid solution while stirring to obtain a solution; adding a first oxidant gradually into the solution to oxidize the soot and obtain a suspension; stirring the suspension while maintaining the temperature of the suspension at about 35° C.; adding Nigella sativa seed extract to the suspension while raising the temperature of the suspension to about 60° C.; adding hydrogen peroxide to the suspension; and isolating the reduced graphene oxide nanoparticles by centrifugation.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: December 26, 2017
    Assignee: KING SAUD UNIVERSITY
    Inventors: Manal Ahmed Gasmelseed Awad, Awatif Ahmed Hendi, Khalid Mustafa Osman Ortashi, Amel Laref
  • Patent number: 9845244
    Abstract: A method of producing graphene sheets and plates from graphitic material including (a) mixing graphitic material particles in a liquid medium to form a suspension; (b) compressing the suspension; (c) directing the compressed suspension through a local constriction into an area of reduced pressure to decompress the suspension in less than 2×10?6 second to a pressure less than 20% of the compression pressure, thereby exfoliating graphene sheets and plates from the graphitic material.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: December 19, 2017
    Assignee: ARISDYNE SYSTEMS, INC.
    Inventors: Oleg Kozyuk, Peter Reimers
  • Patent number: 9840417
    Abstract: Disclosed is AA? graphite with a new stacking feature of graphene, and a fabrication method thereof. Graphene is stacked in the sequence of AA? where alternate graphene layers exhibiting the AA? stacking are translated by a half hexagon (1.23 ?). AA? graphite has an interplanar spacing of about 3.44 ? larger than that of the conventional AB stacked graphite (3.35 ?) that has been known as the only crystal of pure graphite. This may allow the AA? stacked graphite to have unique physical and chemical characteristics.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: December 12, 2017
    Assignee: Korea Institute of Science and Technology
    Inventors: Jae-Kap Lee, So-Hyung Lee, Jae-Pyoung Ahn, Seung-cheol Lee, Wook-Seong Lee
  • Patent number: 9834693
    Abstract: A rapid, scalable methodology for graphene dispersion and concentration with a polymer-organic solvent medium, as can be utilized without centrifugation, to enhance graphene concentration.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: December 5, 2017
    Assignee: Northwestern University
    Inventors: Mark C. Hersam, Yu Teng Liang, Ethan B. Secor, Pradyumna L. Prabhumirashi, Kanan P. Puntambekar, Michael L. Geier
  • Patent number: 9807878
    Abstract: The first present invention is a graphite sheet having a thickness of not more than 9.6 ?m and more than 50 nm and a thermal conductivity along the a-b plane direction at 25° C. of 1950 W/mK or more. The second present invention is a graphite sheet having a thickness in a range of less than 9.6 ?m and 20 nm or more, an area of 9 mm2 or more, and a carrier mobility along the a-b plane direction at 25° C. of 8000 cm2/V·sec or more.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: October 31, 2017
    Assignee: KANEKA CORPORATION
    Inventors: Atsushi Tatami, Mutsuaki Murakami, Masamitsu Tachibana
  • Patent number: 9790094
    Abstract: Provided is a porous graphene preparation method, comprising: under the function of a catalyst, conducting catalytic treatment on a biomass carbon source to obtain a first intermediate product, the catalyst comprising one or more of chlorides of manganese, iron compounds, cobalt compounds and nickel compounds; under protective gas condition, heating the first intermediate product from a first temperature to a second temperature and holding to obtain a second intermediate product; heating the second intermediate product from the second temperature to a third temperature and holding to obtain a third intermediate product; heating the third intermediate product from the third temperature to a fourth temperature and holding to obtain a fourth intermediate product; and cooling the fourth intermediate product from the fourth temperature to a fifth temperature and holding to obtain porous graphene. The porous graphene prepared via the method of the present invention has better electrical conductivity.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: October 17, 2017
    Assignee: Jinan Shengquan Group Share Holding Co., Ltd.
    Inventors: Yilin Tang, Jinzhu Zhang, Yingfu Zheng, Xiaomin Liu, Ding Liu, Enhua Wang