With Metal Compound Patents (Class 252/506)
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Publication number: 20140225041Abstract: Hybrid materials and nanocomposite materials, methods of making and using such materials. The nanoparticles of the nanocomposite are formed in situ during pyrolysis of a hybrid material comprising metal precursor compounds. The nanoparticles are uniformly distributed in the carbon matrix of the nanocomposite. The nanocomposite materials can be used in devices such as, for example, electrodes and on-chip inductors.Type: ApplicationFiled: December 6, 2013Publication date: August 14, 2014Inventors: Lynden A. Archer, Zichao Yang, Shyamal Kumar Das
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Publication number: 20140225043Abstract: A production apparatus for an electric storage material includes a dissolution device that dissolves a thickener in a solvent by applying vibration to the solvent, and a kneading device that kneads a solution of the thickener having an adjusted viscosity and an active substance. The thickener is dissolved in the solvent, and a powder of the active substance and the like are dispersed and kneaded in the solution of the thickener having the adjusted viscosity. Thus, kneading can be performed in a short time, and damage to the active substance can be suppressed.Type: ApplicationFiled: February 4, 2014Publication date: August 14, 2014Applicant: JTEKT CorporationInventors: Takumi MIO, Koji Nishi, Junya Fujita, Yoshifumi Fukaya, Takafumi Fujii, Kazuya Suzuki
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Publication number: 20140220444Abstract: Provided are a method of preparing iron oxide nanoparticles, iron oxide nanoparticles prepared thereby, and an anode material including the iron oxide nanoparticles.Type: ApplicationFiled: April 9, 2014Publication date: August 7, 2014Applicant: LG CHEM, LTD.Inventors: Myung Ki Lee, Sung Bin Park, Sung Joong Kang, Wang Mo Jung
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Publication number: 20140220456Abstract: The present application is generally directed to energy storage materials such as activated carbon comprising enhanced particle packing properties and devices containing the same. The energy storage materials find utility in any number of devices, for example, in electric double layer capacitance devices and batteries. Methods for making the energy storage materials are also disclosed.Type: ApplicationFiled: January 8, 2014Publication date: August 7, 2014Applicant: EnerG2 Technologies, Inc.Inventors: Henry R. Costantino, Chad Goodwin, William D. Scott, Aaron M. Feaver
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Patent number: 8795853Abstract: A material for an organic EL element showing high light emission efficiency and high color purity of the emission light, an organic EL element, a lighting device and a displaying device each using the material.Type: GrantFiled: January 11, 2013Date of Patent: August 5, 2014Assignee: Konica Minolta, Inc.Inventors: Tomohiro Oshiyama, Masato Nishizeki, Noboru Sekine
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Publication number: 20140212753Abstract: Disclosed are embodiments of active materials for organometallic and organometallic-inorganic hybrid electrodes and particularly active materials for organometallic and organometallic-inorganic hybrid cathodes for lithium-ion batteries. In certain embodiments the organometallic material comprises a ferrocene polymer.Type: ApplicationFiled: January 29, 2014Publication date: July 31, 2014Inventors: Qian Huang, John P. Lemmon, Daiwon Choi, Lelia Cosimbescu
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Patent number: 8790551Abstract: An electrolyte composition containing an ionic liquid and conductive particles, an electrolyte composition containing an ionic liquid and oxide semiconductor particles and optionally containing conductive particles, and an electrolyte composition containing an ionic liquid and insulating particles are provided. Furthermore, a photoelectric conversion element comprising: a working electrode, the working electrode comprising an electrode substrate and an oxide semiconductor porous film formed on the electrode substrate and sensitized with a dye; a counter electrode disposed opposing the working electrode; and an electrolyte layer made of these electrolyte compositions is provided.Type: GrantFiled: June 16, 2009Date of Patent: July 29, 2014Assignee: Fujikura Ltd.Inventors: Hiroki Usui, Nobuo Tanabe, Hiroshi Matsui, Tetsuya Ezure, Shozo Yanagida
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Publication number: 20140203218Abstract: A method is employed for producing a positive electrode active material for a lithium secondary battery that comprises mixing lithium phosphate having a particle diameter D90 of 100 ?m or less, an M element-containing compound having a particle diameter D90 of 100 ?m or less (where, M is one type or two or more types of elements selected from the group consisting of Mg, Ca, Fe, Mn, Ni, Co, Zn, Ge, Cu, Cr, Ti, Sr, Ba, Sc, Y, Al, Ga, In, Si, B and rare earth elements) and water, adjusting the concentration of the M element with respect to water to 4 moles/L or more to obtain a raw material, and producing olivine-type LiMPO4 by carrying out hydrothermal synthesis using the raw material.Type: ApplicationFiled: March 24, 2014Publication date: July 24, 2014Applicant: SHOWA DENKO K.K.Inventors: Akihisa TONEGAWA, Akihiko SHIRAKAWA, Isao KABE, Gaku ORIJI
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Patent number: 8784694Abstract: The invention relates to a lithium manganese phosphate/carbon nanocomposite as cathode material for rechargeable electrochemical cells with the general formula LixMnyM1-y(PO4)z/C where M is at least one other metal such as Fe, Ni, Co, Cr, V, Mg, Ca, Al, B, Zn, Cu, Nb, Ti, Zr, La, Ce, Y, x=0.8-1.1, y=0.5-1.0, 0.9<z<1.1, with a carbon content of 0.5 to 20% by weight, characterized by the fact that it is obtained by milling of suitable precursors of LixMnyM1-y(PO4)Z with electro-conductive carbon black having a specific surface area of at least 80 m2/g or with graphite having a specific surface area of at least 9.5 m2/g or with activated carbon having a specific surface area of at least 200 m2/g. The invention also concerns a process for manufacturing said nanocomposite.Type: GrantFiled: April 14, 2009Date of Patent: July 22, 2014Assignee: Dow Global Technologies LLCInventor: Andreas Kay
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Patent number: 8778230Abstract: A subject-matter of the invention is a novel process for the preparation of sulphur-modified monolithic porous carbon-based materials by impregnation with a strong sulphur-based acid, the materials capable of being obtained according to this process and the use of these materials with improved supercapacitance properties to produce electrodes intended for energy storage systems. Electrodes composed of sulphur-modified monolithic porous carbon-based materials according to the invention and lithium batteries and supercapacitors having such electrodes also form part of the invention.Type: GrantFiled: November 11, 2011Date of Patent: July 15, 2014Assignee: HitchinsonInventors: David Ayme-Perrot, Marie Dieudonné, Philippe Sonntag, Anne-Caroline Pasquier
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Publication number: 20140186708Abstract: The present invention provides electrochemical energy storage systems comprising metallolyte composites, iron fluoride composites and iron oxyfluoride composites. The present invention further provides methods for fabricating metallolyte composites.Type: ApplicationFiled: November 26, 2013Publication date: July 3, 2014Inventors: Nathalie Pereira, Glenn Amatucci
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Publication number: 20140186705Abstract: The invention relates to lithium-bearing iron phosphate in the form of micrometric mixed aggregates of nanometric particles, to an electrode and cell resulting therefrom and to the method for manufacturing same, which is characterized by a nanomilling step.Type: ApplicationFiled: December 23, 2013Publication date: July 3, 2014Inventors: Sébastien Patoux, Sébastien Martinet, Sébastien Launois, Alain Gourgue, Alain Germeau, Isabelle Willems
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Publication number: 20140178765Abstract: A positive electrode active substance including a lithium-containing metal oxide represented by the following general formula (1): LiFe1-xMxP1-ySiyO4??(1) wherein M represents an element selected from Sn, Zr, Y, and Al; 0<x<1; and 0<y<1, wherein the lithium-containing metal oxide has a lattice constant and a half value width of a diffraction peak of a (011) plane.Type: ApplicationFiled: November 14, 2013Publication date: June 26, 2014Applicant: Sharp Kabushiki KaishaInventors: KOJI OHIRA, Motoaki Nishijima, Toshitsugu Sueki, Shougo Esaki, Isao Tanaka, Yukinori Koyama, Katsuhisa Tanaka, Koji Fujita, Shunsuke Murai
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Publication number: 20140175337Abstract: A modified maleimide oligomer is disclosed. The modified maleimide oligomer is made by performing a reaction of a compound having a barbituric acid structure, a free radical capture, and a compound having a maleimide structure. A composition for a battery is also disclosed. The composition includes the modified maleimide oligomer.Type: ApplicationFiled: June 3, 2013Publication date: June 26, 2014Inventors: Chorng-Shyan CHERN, Jing-Pin PAN, Chang-Rung YANG, Tsung-Hsiung WANG, Guan-Lin LAI, Jung-Mu HSU
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Patent number: 8753533Abstract: Provided are a mixed cathode active material including lithium manganese oxide expressed as Chemical Formula 1 and a stoichiometric spinel structure Li4Mn5O12 having a plateau voltage profile in a range of 2.5 V to 3.3 V, and a lithium secondary battery including the mixed cathode active material. The mixed cathode material and the lithium secondary battery including the same may have improved safety and simultaneously, power may be maintained more than a required value by allowing Li4Mn5O12 to complement low power in a low state of charge (SOC) range. Therefore, a mixed cathode active material able to widen an available SOC range and a lithium secondary battery including the mixed cathode active material may be provided and properly used in a plug-in hybrid electric vehicle (PHEV) or electric vehicle (EV).Type: GrantFiled: May 9, 2012Date of Patent: June 17, 2014Assignee: LG Chem, Ltd.Inventors: Jung Hwan Park, Song Taek Oh, Geun Chang Chung, Su Hwan Kim, Juichi Arai
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Publication number: 20140162129Abstract: In an aspect, a negative electrode active material, a method of preparing the same, and a lithium secondary battery having the negative electrode including the negative electrode active material is provided. The negative electrode active material may include amorphous silicon oxide, crystalline silicon, carbon, metal silicide, spherical particles and whiskers.Type: ApplicationFiled: March 14, 2013Publication date: June 12, 2014Applicant: SAMSUNG SDI CO., LTD.Inventors: Deok-Hyun Kim, Jae-Myung Kim, Kyu-Nam Joo, Soon-Sung Suh, Yeon-Gap Kim
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Publication number: 20140154563Abstract: Composite particles for a positive electrode of an electrochemical element include a conductive material, a Ni containing positive electrode active material, a water soluble resin including a monomeric unit containing an acidic functional group, and a granular binder resin. The content of the water soluble resin is 1 to 10 parts by mass per 100 parts by mass of the Ni containing positive electrode active material. An electrochemical element includes a collector and a positive electrode active material layer obtained by formation with the composite particles. Furthermore, a method for producing the composite particles includes drying and granulating an aqueous slurry composition including the above components in order to obtain the composite particles. The content in the slurry composition of the water soluble resin is 1 to 10 parts by mass per 100 parts by mass of the Ni containing positive electrode active material.Type: ApplicationFiled: December 4, 2013Publication date: June 5, 2014Applicant: ZEON CORPORATIONInventor: Hiroki OGURO
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Publication number: 20140151609Abstract: A slurry composition for composite particles for a positive electrode includes a positive electrode active material, a conductive material, a water soluble resin including a monomeric unit containing an acidic functional group, and a granular binder resin. The moisture content is at most 25% by mass, and the viscosity at a shear velocity of 10 s?1 is at most 2000 mPa·s. A method for producing composite particles for a positive electrode of an electrochemical element includes kneading a mixture including a positive electrode active material, a conductive material, and a water soluble resin including a monomeric unit containing an acidic functional group, preparing a slurry composition with a moisture content of at most 25% by mass and a viscosity at a shear velocity of 10 s?1 of at most 2000 mPa·s by adding a granular binder resin and water to the kneaded mixture, and spray drying the slurry composition.Type: ApplicationFiled: December 4, 2013Publication date: June 5, 2014Applicant: Zeon CorporationInventor: Hiroki OGURO
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Publication number: 20140154577Abstract: Compositions, and methods of obtaining them, useful for lithium ion batteries comprising discrete oxidized carbon nanotubes having attached to their surface lithium ion active materials in the form of nanometer sized crystals or layers. The composition can further comprise graphene or oxygenated graphene.Type: ApplicationFiled: June 21, 2012Publication date: June 5, 2014Applicant: Molecular Rebar Design, LLCInventors: Clive P. Bosnyak, Kurt W. Swogger
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Publication number: 20140145121Abstract: The present invention relates to a combustion method for producing a lithium insertion material for a cathode in a Li-ion battery, the material comprising iron, lithium, silicon, and carbon.Type: ApplicationFiled: June 7, 2012Publication date: May 29, 2014Applicant: HÖGANÄS AB (Publ)Inventors: Mohammed Dhabi, Torbjörn Gustafsson, Björn Skårman
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Publication number: 20140147738Abstract: An electrode composite material is disclosed in the invention. The electrode composite material comprises ABxCyDz, wherein A is selected from at least one of polypyrrole, polyacrylonitrile, and polyacrylonitrile copolymer; B comprises sulfur; C is selected from carbon material; D is selected from metal oxides, l?x?20, 0?y<l, and 0?z<1. Comparing to the prior art, the conductivity of the electrode composite material is obviously increased, the material is dispersed uniformly and the size of the material is small. The electrochemical performance of the electrode composite material is improved. It has a good cycle life and high discharging capacity efficiency. A method for manufacturing the electrode composite material, a positive electrode using the electrode composite material and a battery including the same are also disclosed in the invention.Type: ApplicationFiled: December 11, 2013Publication date: May 29, 2014Applicant: POSITEC POWER TOOLS (SUZHOU) CO., LTDInventors: Pu Chen, Yongguang Zhang, Zhumabay Bakenov, Aishuak Konarov, The Nam Long Doan
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Publication number: 20140145120Abstract: A method for producing an iron(III)orthophosphate-carbon composite which contains iron(III)orthophosphate of the general formula FePO4×nH2O (n?2.5), a carbon source being dispersed in a phosphoric aqueous Fe2+ ion-containing solution and orthophosphate-carbon composite being precipitated and removed from the aqueous solution when an oxidant is added to the dispersion.Type: ApplicationFiled: January 23, 2012Publication date: May 29, 2014Applicant: CHEMISCHE FABRIK BUDENHEIM KGInventors: Gunnar Buehler, Killian Schwarz, Andreas Jazdanian, Christian Graf, Michael Rapphahn
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Publication number: 20140147727Abstract: Provided are a cathode active material having high capacity and excellent lifetime characteristics as well as being inexpensive by mixing transition metal oxide having high irreversible capacity with composite dimensional manganese oxide (CDMO) of the following Chemical Formula 1, which has high capacity and good lifetime characteristics but is difficult to be charged and discharged by being used alone, and a lithium secondary battery including the cathode active material: xMnO2·(1?x)Li2MnO3(0<x<1).Type: ApplicationFiled: November 22, 2013Publication date: May 29, 2014Applicant: LG CHEM, LTD.Inventors: Jung Hwan PARK, Hyun Seok LEE, Youn Kyoung LEE, Ji Hee AHN, Hoe Jin HAH
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Publication number: 20140147744Abstract: Provided is a cathode material for lithium ion secondary battery containing a composite material of a lithium silicate crystal and a carbon material. The composite material shows a peak in a wave number range from 1400 cm?1 to 1550 cm?1 in infrared absorption spectrum and shows no peak in a wave number range from 1000 cm?1 to 1150 cm?1 in Raman spectrum.Type: ApplicationFiled: July 2, 2012Publication date: May 29, 2014Applicant: SHOEI CHEMICAL INC.Inventors: Atsushi Nemoto, Maki Moriya, Hirokazu Sasaki
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Patent number: 8734752Abstract: A method of synthesis of a fulleride of metal nano-cluster is provided. The method is characterized in mechanically alloying metal nano-clusters with fullerene-type clusters. Fullerene molecules in the fulleride of metal nano-cluster are preserved. The alloying is done by milling in a planetary mill. A material including a fulleride of a metal nano-cluster is also provided.Type: GrantFiled: November 16, 2010Date of Patent: May 27, 2014Assignee: Siemens AktiengesellschaftInventors: Vladimir Davidovich Blank, Gennadii Ivanovich Pivovarov, Mikhail Yurievich Popov
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Patent number: 8734996Abstract: An anode of a lithium battery includes a supporting member and a carbon nanotube film disposed on a surface of the support member. The carbon nanotube film includes at least two overlapped and intercrossed layers of carbon nanotubes. Each layer includes a plurality of successive carbon nanotube bundles aligned in the same direction. A method for fabricating the anode of the lithium battery includes the steps of: (a) providing an array of carbon nanotubes; (b) pulling out, by using a tool, at least two carbon nanotube films from the array of carbon nanotubes; and (c) providing a supporting member and disposing the carbon nanotube films to the supporting member along different directions and overlapping with each other to achieving the anode of lithium battery.Type: GrantFiled: December 14, 2007Date of Patent: May 27, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Chen Feng, Kai-Li Jiang, Liang Liu, Xiao-Bo Zhang, Shou-Shan Fan
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Publication number: 20140141332Abstract: Provided is a cathode material for a lithium ion secondary battery that includes a composite grain formed of lithium iron silicate crystals or lithium manganese silicate crystals and a carbon material. The composite grain has a sea-islands structure in which the lithium iron silicate crystals or lithium manganese silicate crystals are scattered like islands in the carbon material, and the islands have an average value of circle-equivalent diameter of smaller than 15 nm.Type: ApplicationFiled: July 2, 2012Publication date: May 22, 2014Applicant: SHOEI CHEMICAL INC.Inventors: Atsushi Nemoto, Yuki Matsuda, Hirokazu Sasaki
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Publication number: 20140134490Abstract: A process of preparing mesoporous nano-composite LiMn1-xFexPO4 (0?x?1, e.g., x=0, 0.2, 0.5 and 0.8) particles. The process contains the steps of providing a mixture of a soft-template compound, a lithium ion-containing compound, an iron ion-containing compound, a manganese ion-containing compound, and a phosphate ion-containing compound in a solvent, removing the solvent to obtain a LiMn1-xFexPO4 precursor, and calcining the precursor followed by milling and annealing. Also disclosed is a mesoporous nano-composite LiMn1-xFexPO4 particle prepared by this process.Type: ApplicationFiled: June 27, 2012Publication date: May 15, 2014Applicant: National University of SingaporeInventors: Palani Balaya, Vishwanathan Ramar
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Publication number: 20140124708Abstract: The invention relates to a novel method for producing a carbon-doped lithium sulfide powder, according to which elementary lithium is reacted with elementary sulfur and/or a sulfur-containing compound selected from the group containing CS2, COS, SO2 and SO, in a liquid state, in a hydrocarbon solvent except naphthalene. The products of the method according to the invention are used to produce lithium battery electrodes or a lithium-ion-conducting solid.Type: ApplicationFiled: June 12, 2012Publication date: May 8, 2014Applicant: Chemetall GmbHInventor: Ulrich Wietelmann
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Publication number: 20140127562Abstract: Described is an electrode comprising and preferably consisting of electronically active material (EAM) in nanoparticulate form and a matrix, said matrix consisting of a pyrolization product with therein incorporated graphene flakes and optionally an ionic lithium source. Also described are methods for producing a particle based, especially a fiber based, electrode material comprising a matrix formed from pyrolized material incorporating graphene flakes and rechargeable batteries comprising such electrodes.Type: ApplicationFiled: January 14, 2014Publication date: May 8, 2014Applicant: Belenos Clean Power Holding AGInventors: Reinhard NESPER, Tommy KASPAR, Yoann METTAN
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Patent number: 8715532Abstract: Disclosed herein is a reduced graphene oxide doped with a dopant, and a thin layer, a transparent electrode, a display device and a solar cell including the reduced graphene oxide. The reduced graphene oxide doped with a dopant includes an organic dopant and/or an inorganic dopant.Type: GrantFiled: July 11, 2008Date of Patent: May 6, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Hyeon-jin Shin, Jae-young Choi, Seon-mi Yoon
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Publication number: 20140120420Abstract: A composite electrode material consisting of a carbon coated complex oxide, fibrous carbon and a binder. Said material is prepared by a method which includes co-grinding an active electrode material and fibrous carbon, and adding a binder to the co-grinded mixture to lower the viscosity of the mixture. The fibrous carbon is preferably vapor grown carbon fibers.Type: ApplicationFiled: January 7, 2014Publication date: May 1, 2014Applicants: SHOWA DENKO K.K., HYDRO-QUEBECInventors: KARIM ZAGHIB, CHIAKI SOTOWA, PATRICK CHAREST, MASATAKA TAKEUCHI, ABDELBAST GUERFI
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Publication number: 20140110635Abstract: The invention relates to a novel method for producing a carbon-doped lithium sulfide powder, according to which elementary lithium is reacted with elementary sulfur and/or a sulfur-containing compound selected from the group containing CS2, COS, SO2 and SO, in a liquid state, in an aliphatic or cycloaliphatic hydrocarbon solvent. The products of the method according to the invention are used to produce lithium battery electrodes or a lithium-ion-conducting solid.Type: ApplicationFiled: June 14, 2012Publication date: April 24, 2014Inventor: Ulrich Wietelmann
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Patent number: 8703009Abstract: The present invention provides for a lithium ion battery and process for creating such, comprising higher binder to carbon conductor ratios than presently used in the industry. The battery is characterized by much lower interfacial resistances at the anode and cathode as a result of initially mixing a carbon conductor with a binder, then with the active material. Further improvements in cycleability can also be realized by first mixing the carbon conductor with the active material first and then adding the binder.Type: GrantFiled: November 6, 2009Date of Patent: April 22, 2014Assignee: The Regents of the University of CaliforniaInventors: Gao Liu, Vincent S. Battaglia, Honghe Zheng
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Publication number: 20140103263Abstract: Provided is a cathode material capable of obtaining high energy density and superior instantaneous output characteristics in a lithium ion secondary battery. The cathode material is used in a lithium ion secondary battery (1), and includes FeF3 and LiV3O8 as a cathode active material. A mass ratio of FeF3 to LiV3O8 of the cathode material is in a range of 86:14 to 43:57. The cathode material further comprises a conductive auxiliary.Type: ApplicationFiled: October 14, 2013Publication date: April 17, 2014Applicant: HONDA MOTOR CO., LTD.Inventors: Yuji Isogai, Shintaro Aoyagi, Kaoru Omichi
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Publication number: 20140103264Abstract: A method for modifying a positive electrode material for a lithium-ion battery. The method includes: a) grinding a mixture of manganese dioxide and lithium carbonate, and calcining the mixture at no less than a temperature of 600° C. for no less than 20 hrs in the presence of air, to yield a powdery lithium manganese oxide (LiMn2O4); b) adding a precursor for forming a graphene-like structure to the powdery LiMn2O4, mixing, curing at a constant temperature of no less than 180° C. for between 2 and 4 hrs, grinding, and calcining at no less than a temperature of 500° C. for between 1 and 50 hrs in the presence of an inert gas, to yield a composite powder comprising a graphene-like structure and LiMn2O4; and c) collecting and sintering the composite powder at a temperature of between 300 and 500° C. for between 1 and 10 hrs in the presence of air.Type: ApplicationFiled: December 19, 2013Publication date: April 17, 2014Inventors: Jianhong LIU, Hongzhen ZHANG, Qianling ZHANG, Dayong GUI, Chuanxin HE, Caizhen ZHU
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Publication number: 20140103297Abstract: Various methods and apparatuses involve the provision of graphitic material. As consistent with one or more aspects herein, an organic material template is used to restrict growth, in a width dimension, of graphitic material grown from the organic material template. Graphitic material is therein provided, having a set of characteristics including electrical behavior and shape, with a representative width defined by the width dimension, based on the organic material template.Type: ApplicationFiled: August 30, 2013Publication date: April 17, 2014Applicant: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Anatoliy N. Sokolov, Fung Ling Yap, Zhenan Bao, Nan Liu
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Publication number: 20140106215Abstract: A lithium ion battery includes a positive electrode comprising carbon fibers, a binder composition with conductive carbon, and a lithium rich composition. The lithium rich composition comprises at least one selected from the group consisting of Li1+x(My MzII MwIII)O2 where x+y+z=1, and xLi2MnO3(1?x)LiMO2, where x=0.2-0.7, and where M, MII and MIII are interchangeably manganese, nickel and cobalt, and LiM2?xMxIIO4 , where M and MII are manganese and nickel, respectively, with x=0.5. A negative electrode comprises carbon fibers having bound thereto silicon nanoparticles, and a mesophase pitch derived carbon binder between the silicon nanoparticles and the carbon fibers. An electrolyte is interposed between the positive electrode and the negative electrode. Methods of making positive and negative electrodes are also disclosed.Type: ApplicationFiled: October 12, 2012Publication date: April 17, 2014Applicant: UT-BATTELLE, LLCInventor: UT-BATTELLE, LLC
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Patent number: 8696943Abstract: A catalyst for producing a carbon nanofiber is obtained by dissolving or dispersing [I] a compound containing Fe element; [II] a compound containing Co element; [III] a compound containing at least one element selected from the group consisting of Ti, V, Cr, and Mn; and [IV] a compound containing at least one element selected from the group consisting of W and Mo in a solvent to obtain a solution or the fluid dispersion, and then impregnating a particulate carrier with the solution or the fluid dispersion. A carbon nanofiber is obtained by bringing a carbon element-containing compound into contact with the catalyst in a vapor phase at a temperature of 300 degrees C. to 500 degrees C.Type: GrantFiled: June 16, 2009Date of Patent: April 15, 2014Assignee: Showa Denko K.K.Inventors: Eiji Kambara, Akihiro Kitazaki
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Patent number: 8691441Abstract: A nano graphene-enhanced particulate for use as a lithium battery cathode active material, wherein the particulate is formed of a single or a plurality of graphene sheets and a plurality of fine cathode active material particles with a size smaller than 10 ?m (preferably sub-micron or nano-scaled), and the graphene sheets and the particles are mutually bonded or agglomerated into an individual discrete particulate with at least a graphene sheet embracing the cathode active material particles, and wherein the particulate has an electrical conductivity no less than 10?4 S/cm and the graphene is in an amount of from 0.01% to 30% by weight based on the total weight of graphene and the cathode active material combined.Type: GrantFiled: September 7, 2010Date of Patent: April 8, 2014Assignee: Nanotek Instruments, Inc.Inventors: Aruna Zhamu, Jinjun Shi, Guorong Chen, Ming C. Wang, Bor Z. Jang
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Publication number: 20140087164Abstract: Inks for the formation of transparent conductive films are described that comprise an aqueous or alcohol based solvent, carbon nanotubes as well as suitable dopants. Suitable dopants generally comprise halogenated ionic dopants. In some embodiment, the inks comprise sulfonated dispersants that can effectively provide additional doping to improve electrical conductivity as well as stabilize the inks with respect to settling and/or improve the fluid properties of the inks for certain processing approaches. The inks can be processed into films with desirable levels of electrical conductivity and optical transparency.Type: ApplicationFiled: September 24, 2012Publication date: March 27, 2014Applicant: C3NANO INC.Inventors: Melburne C. LeMieux, Ajay Virkar, Yung-Yu Huang
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Publication number: 20140084219Abstract: In some embodiments, the present invention pertains to carbon nanotube fibers that include one or more fiber threads. In some embodiments, the fiber threads include doped multi-walled carbon nanotubes, such as doped double-walled carbon nanotubes. In some embodiments, the carbon nanotubes are functionalized with one or more functional groups. In some embodiments, the carbon nanotube fibers are doped with various dopants, such as iodine and antimony pentafluoride. In various embodiments, the carbon nanotube fibers of the present invention can include a plurality of intertwined fiber threads that are twisted in a parallel configuration with one another. In some embodiments, the carbon nanotube fibers include a plurality of fiber threads that are tied to one another in a serial configuration. In some embodiments, the carbon nanotube fibers of the present invention are also coated with one or more polymers.Type: ApplicationFiled: February 28, 2012Publication date: March 27, 2014Applicant: William Marsh Rice UniversityInventors: Yao Zhao, Jinquan Wei, Padraig G. Moloney, Pulickel M. Ajayan, Enrique V. Barrera
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Patent number: 8673462Abstract: A system, in one embodiment, includes an ESD adhesive operatively coupled to leads of an electronic device for providing ESD protection thereto, the ESD adhesive including a mixture of a polymeric thin film and electrically conductive fillers dispersed in the polymeric thin film, and has a structural characteristic of being formed through at least partial evaporation of a solvent therefrom and being substantially free of agglomerates of the electrically conductive fillers. In another embodiment, a method for providing ESD protection to an element of an electronic device includes preventing formation of agglomerates of electrically conductive fillers in an ESD adhesive that includes a polymeric thin film, the electrically conductive fillers dispersed therein, and a solvent by subjecting the ESD adhesive to high-energy mixing during formation thereof, applying the ESD adhesive across exposed leads, such as leads of a cable, PCB, or other substrate, and evaporating solvent from the ESD adhesive.Type: GrantFiled: September 2, 2011Date of Patent: March 18, 2014Assignee: International Business Machines CorporationInventors: Dylan J. Boday, Myron H. Gentrup, Icko E. T. Iben
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Publication number: 20140060602Abstract: An electrically conductive composition, containing (A) a carbon nanotube, (B) an electrically conductive polymer, and (C) an onium salt compound, an electrically conductive film using the composition, and a method of producing the electrically conductive film.Type: ApplicationFiled: September 27, 2013Publication date: March 6, 2014Applicant: FUJIFILM CorporationInventors: Toshiaki AOAI, Ryo NISHIO, Naoyuki HAYASHI
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Patent number: 8663506Abstract: A method relating to making a metal coated filler includes mixing a solution of an organic diol with a plurality of porous filler particles to obtain a support mixture; contacting a metal salt solution with the support mixture forming a reaction mixture; and heating the reaction mixture to a temperature within a temperature range from about 50 degrees Celsius to about 200 degrees Celsius. The metal cations in the metal salt solution are reduced to metal particles by the organic diol and are disposed on the porous filler particles and on filler particle pore surfaces. The metal coated filler may then be optionally isolated. Electrically and/or thermally conductive articles including the metal coated fillers and methods for their manufacture are also disclosed.Type: GrantFiled: April 29, 2010Date of Patent: March 4, 2014Assignee: Laird Technologies, Inc.Inventors: Bukkinakere Kapanipathaiya Chandrasekhar, Shalini Kandoor, Adyam Srinivasa Mukunda
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Publication number: 20140054511Abstract: The present invention provides a method for transferring phases of nanoparticles, which use a polymer with a molecular weight greater than 5,000 as a dispersant. The first step of the method of the present invention is to synthesize nanoparticles in the polymer aqueous solution. Next, an amphiphilic phase-transfer agent is added into the solution to coat the surface of nanoparticles with bipolar molecules, and then the mixture is added into an organic solvent to form a homogeneous solution. Finally, a salt and an alcohol are added into the homogeneous solution, and then an organic phase layer and an aqueous phase layer through a centrifugal method. The method of the present invention combines the advantages of aqueous process for preparing nanoparticles and transfers the same with a simple phase transferring process to obtain oil-phase nanoparticles, which can be applied to various fields.Type: ApplicationFiled: August 6, 2013Publication date: February 27, 2014Applicant: National Tsing Hua UniversityInventors: Kan-Sen CHOU, Yi-Chu CHEN
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Publication number: 20140054490Abstract: Metal-graphene nanocomposites, metal-oxide-graphene nanocomposites, and method for their preparation are described. According to some embodiments, a metal salt is combined with graphite oxide (GO) to form a metal salt-GO composite. The metal salt-GO composite is reduced to a metal-graphene or metal oxide-graphene nanocomposite material. The metals may be magnetic or non-magnetic. In some embodiments, the reduction is conducted via exposure to intensified electromagnetic radiation, such as focused solar radiation.Type: ApplicationFiled: August 1, 2013Publication date: February 27, 2014Applicant: INDIAN INSTITUTE OF TECHNOLOGY MADRASInventors: Ramaprabhu SUNDARA, Eswaraiah VARRLA, Jyothirmayee Aravind SASIDHARANNAIR SASIKALADEVI
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Patent number: 8652361Abstract: The invention relates to a composite electrode material consisting of a carbon coated complex oxide, fibrous carbon and a binder. Said material is prepared by a method which comprises co-grinding an active electrode material and fibrous carbon, and adding a binder to the co-grinded mixture to lower the viscosity of the mixture. The fibrous carbon is preferably vapor grown carbon fibers.Type: GrantFiled: February 24, 2009Date of Patent: February 18, 2014Assignees: Hydro-Quebec, Showa Denko K.K.Inventors: Karim Zaghib, Chiaki Sotowa, Patrick Charest, Masataka Takeuchi, Abdelbast Guerfi
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Publication number: 20140042372Abstract: The present invention provides a method for producing a cathode-active material containing an olivine-type lithium metal phosphate for a lithium secondary battery which does not need washing or sintering after hydrothermal synthesis, the method including a step in which hydrothermal synthesis is carried out by using a mixture containing HMnPO4 and a lithium source as a raw material to produce an olivine-type lithium metal phosphate.Type: ApplicationFiled: April 16, 2012Publication date: February 13, 2014Applicant: SHOWA DENKO K.K.Inventor: Akihisa Tonegawa
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Publication number: 20140038035Abstract: A positive active material composition for a rechargeable lithium battery that includes a positive active composite material including a compound being reversibly capable of intercalating and deintercalating lithium, WO3, and a binder; and an aqueous binder, a positive electrode for a rechargeable lithium battery including the positive active material composition, and a rechargeable lithium battery comprising the positive electrode including the positive active material composition.Type: ApplicationFiled: February 19, 2013Publication date: February 6, 2014Applicant: Samsung SDI Co., Ltd.Inventors: Chae-Woong Cho, Myung-Duk Lim, Seung-Hun Han