Alkali Metal Containing (li, Na, K, Rb, Or Cs) Patents (Class 423/594.15)
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Publication number: 20140017567Abstract: Provided is an anode active material including lithium metal oxide particles having an internal porosity ranging from 3% to 8% and an average particle diameter (D50) ranging from 5 ?m to 12 ?m. According to the present invention, since the high-density lithium metal oxide particles are included, the adhesion to an anode may be significantly improved even by using the same or smaller amount of a binder that is required during the preparation of an anode slurry, and high rate characteristics of a secondary battery may be improved by decreasing the average particle diameter of the lithium metal oxide particles.Type: ApplicationFiled: August 28, 2013Publication date: January 16, 2014Applicant: LG CHEM, LTD.Inventors: Byung Hun Oh, Je Young Kim, Hyun Woong Yun, Ye Ri Kim
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Publication number: 20140010752Abstract: Provided is a new method for producing a positive electrode active material for lithium secondary batteries, by which even in the case of washing a spinel type lithium transition metal oxide with water or the like, the service life characteristics can be further enhanced, and the concentration of magnetic substances can be effectively reduced. Suggested is a method for producing a positive electrode active material for lithium secondary batteries, the method including a water washing step of bringing a powder of a spinel type lithium transition metal oxide into contact with a polar solvent and thereby washing the powder; and a drying step of subsequently drying the powder by heating the powder to 300° C. to 700° C. in an atmosphere containing oxygen.Type: ApplicationFiled: December 19, 2011Publication date: January 9, 2014Applicant: MITSUI MINING & SMELTING CO., LTD.Inventors: Shinya Kagei, Yoshimi Hata, Yasuhiro Ochi
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Publication number: 20140011075Abstract: Lithium-nickel-containing molecular precursor compounds, compositions and processes for making cathodes for lithium ion batteries. The molecular precursor compounds are soluble and provide processes to make cathode materials with controlled stoichiometry in solution-based processes. The cathode material can be, for example, a lithium nickel oxide, a lithium nickel phosphate, or a lithium nickel silicate. Cathodes can be made as bulk material in a solid form or in solution, or in various forms including thin films.Type: ApplicationFiled: June 27, 2013Publication date: January 9, 2014Inventors: Kyle L. Fujdala, Zhongliang Zhu, Paul R. Markoff Johnson
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Publication number: 20130295440Abstract: Disclosed are an electrode active material containing moisture in an amount less than 2,000 ppm per 1 g of lithium metal oxide or moisture in an amount less than 7,000 ppm per 1 cm3 of the lithium metal oxide, and an electrode containing moisture in an amount less than 2,000 ppm per 1 cm3 of an electrode mix.Type: ApplicationFiled: April 16, 2013Publication date: November 7, 2013Inventor: LG CHEM, LTD.
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Patent number: 8574541Abstract: The present invention provides for a process of making a Ni-based lithium transition metal oxide cathode active materials used in lithium ion secondary batteries. The cathode active materials are substantially free of Li2CO3 impurity and soluble bases.Type: GrantFiled: March 31, 2011Date of Patent: November 5, 2013Assignee: LG Chem, Ltd.Inventors: Jens M. Paulsen, Hong-Kyu Park, Yong Hoon Kwon
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Patent number: 8546298Abstract: An odor filtration media having a chemical reagent which removes odor causing fluid contaminants from a fluid stream through the use of granular or shaped media have a chemical composition including permanganate is provided. A method of producing the odor absorbing media having a chemical reagent is also provided and comprises the steps of mixing H2O, KMnO4, and at least one salt adding ions or ionic compounds selected from the group consisting of Na+, Li+, K+, NH4+, Cl?, SO42?, BO32?, CO32?, PO43?, NO3? and combinations thereof, or from the group consisting of Na+, Li+, K+, NH4+, Mg2+, Ca2+, Cl?, BO32?, NO3? and combinations thereof, forming an impregnating solution. The impregnating solution is heated and combined with a support material to form a coherent mass.Type: GrantFiled: March 9, 2011Date of Patent: October 1, 2013Assignee: AAF-McQuay Inc.Inventors: Michael W Osborne, Zhong C. He, Ng Cheah Wei
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Publication number: 20130247757Abstract: An adsorbent for carbon dioxide may include a structure that includes composite metal oxide including a first metal (M1) and a second metal (M2) linked through oxygen (0). The first metal (M1) may be selected from an alkali metal, an alkaline-earth metal, and a combination thereof. The second metal (M2) may have a trivalent oxidation number or greater. The composite metal oxide may include mesopores inside or in the surface thereof. The adsorbent may be included in a capture module for carbon dioxide. A method of reducing emissions may include adsorbing carbon dioxide using the adsorbent for carbon dioxide.Type: ApplicationFiled: March 15, 2013Publication date: September 26, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyun Chul LEE, Jeong Gil SEO, Soon Chul KWON, Hyuk Jae KWON
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Patent number: 8540961Abstract: Provided is a method for preparing a lithium mixed transition metal oxide, comprising subjecting Li2CO3 and a mixed transition metal precursor to a solid-state reaction under an oxygen-deficient atmosphere with an oxygen concentration of 10 to 50% to thereby prepare a powdered lithium mixed transition metal oxide having a composition represented by Formula I of LixMyO2 wherein M, x and y are as defined in the specification. Therefore, since the high-Ni lithium mixed transition metal oxide having a given composition can be prepared by a simple solid-state reaction in air, using a raw material that is cheap and easy to handle, the present invention enables industrial-scale production of the lithium mixed transition metal oxide with significantly decreased production costs and high production efficiency.Type: GrantFiled: October 28, 2010Date of Patent: September 24, 2013Assignee: LG Chem, Ltd.Inventors: Hong-Kyu Park, Sun Sik Shin, Sin Young Park, Ho Suk Shin, Jens M. Paulsen
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Publication number: 20130244099Abstract: A composition comprised of nanoparticles of lithium ion conducting solid oxide material, wherein the solid oxide material is comprised of lithium ions, and at least one type of metal ion selected from pentavalent metal ions and trivalent lanthanide metal ions. Solution methods useful for synthesizing these solid oxide materials, as well as precursor solutions and components thereof, are also described. The solid oxide materials are incorporated as electrolytes into lithium ion batteries.Type: ApplicationFiled: May 3, 2013Publication date: September 19, 2013Applicant: UT-Battelle, LLCInventors: Chaitanya K. Narula, Claus Daniel
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Patent number: 8518367Abstract: A method of producing a titanium oxide, including the steps of: ion-exchanging a sodium titanium oxide Na2Ti6O13, to synthesize Li2Ti6O13; subjecting Li2Ti6O13 to proton exchange, to give H2Ti6O13; and subjecting H2Ti6O13, as a starting material, to a heat treatment.Type: GrantFiled: November 12, 2009Date of Patent: August 27, 2013Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Junji Akimoto, Kunimitsu Kataoka, Akemi Kawashima, Hiroshi Hayakawa
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Publication number: 20130216701Abstract: Positive electrode active materials are described that have a high tap density and high specific discharge capacity upon cycling at room temperature and at a moderate discharge rate. Some materials of interest have the formula Li1+xNi?Mn?Co?O2, where x ranges from about 0.05 to about 0.25, ? ranges from about 0.1 to about 0.4, ? ranges from about 0.4 to about 0.65, and ? ranges from about 0.05 to about 0.3. The materials can be coated with a metal fluoride to improve the performance of the materials especially upon cycling. Also, the coated materials can exhibit a very significant decrease in the irreversible capacity lose upon the first charge and discharge of the battery.Type: ApplicationFiled: March 21, 2013Publication date: August 22, 2013Applicant: Envia Systems, Inc.Inventor: Envia Systems, Inc.
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Patent number: 8492030Abstract: A method of manufacture an article of a cathode (positive electrode) material for lithium batteries. The cathode material is a lithium molybdenum composite transition metal oxide material and is prepared by mixing in a solid state an intermediate molybdenum composite transition metal oxide and a lithium source. The mixture is thermally treated to obtain the lithium molybdenum composite transition metal oxide cathode material.Type: GrantFiled: June 19, 2006Date of Patent: July 23, 2013Assignee: UChicago Argonne LLCInventors: Sang-Ho Park, Khalil Amine
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Publication number: 20130156683Abstract: A method of reducing magnetic and/or oxidic contaminants in lithium metal oxygen compounds in particle form, in order to obtain purified lithium metal oxygen compounds, by means of treatment in a grinding process and sifting process with continuous or non-continuous removal and obtaining of the purified lithium metal oxygen compound. The grinding process and sifting process are terminated prematurely before the residue amounts to less than 1% of the quantity m. The residue, containing contaminants, is discarded.Type: ApplicationFiled: July 4, 2011Publication date: June 20, 2013Applicant: Sued-Chemie IP GmbH & Co. KGInventors: Michael Holzapfel, Christian Vogler
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Publication number: 20130142944Abstract: Positive electrode active materials are described that have a very high specific discharge capacity upon cycling at room temperature and at a moderate discharge rate. Some materials of interest have the formula Li1+xNi60Mn?Co?O2, where x ranges from about 0.05 to about 0.25, ? ranges from about 0.1 to about 0.4, ? range's from about 0.4 to about 0.65, and ? ranges from about 0.05 to about 0.3. The materials can be coated with a metal fluoride to improve the performance of the materials especially upon cycling. Also, the coated materials can exhibit a very significant decrease in the irreversible capacity lose upon the first charge and discharge of the cell. Methods for producing these materials include, for example, a co-precipitation approach involving metal hydroxides and sol-gel approaches.Type: ApplicationFiled: January 31, 2013Publication date: June 6, 2013Applicant: ENVIA SYSTEMS, INC.Inventor: Envia Systems, Inc.
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Publication number: 20130130090Abstract: Provided are a transition metal mixed hydroxide comprising an alkali metal other than Li, SO4 and a transition metal element, wherein the molar ratio of the molar content of the alkali metal to the molar content of the SO4 is not less than 0.05 and less than 2, and a lithium mixed metal oxide obtained by calcining a mixture of the transition metal mixed hydroxide and a lithium compound by maintaining the mixture at a temperature of 650 to 100000.Type: ApplicationFiled: June 9, 2011Publication date: May 23, 2013Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Kenji Takamori, Hiroshi Inukai, Taiga Obayashi
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Patent number: 8440113Abstract: The present invention aims at providing lithium manganate having a high output and an excellent high-temperature stability. The above aim can be achieved by lithium manganate particles having a primary particle diameter of not less than 1 ?m and an average particle diameter (D50) of kinetic particles of not less than 1 ?m and not more than 10 ?m, which are substantially in the form of single crystal particles and have a composition represented by the following chemical formula: Li1+xMn2?x?yYyO4 in which Y is at least one element selected from the group consisting of Al, Mg and Co; x and y satisfy 0.03?x?0.15 and 0.05?y?0.20, respectively, wherein the Y element is uniformly dispersed within the respective particles, and an intensity ratio of I(400)/I(111) thereof is not less than 33% and an intensity ratio of I(440)/I(111) thereof is not less than 16%.Type: GrantFiled: March 27, 2008Date of Patent: May 14, 2013Assignee: Toda Kogyo CorporationInventors: Masayuki Uegami, Akihisa Kajiyama, Kazutoshi Ishizaki, Hideaki Sadamura
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Patent number: 8404305Abstract: The LiMPO4 compound is synthesized by reacting a compound of general formula XMPO4, nH2O where X represents a radical selected from —NH4 and —H and M is a transition metal selected from Co, Ni and Mn, with a lithium source such as lithium nitrate, at a temperature lower than or equal to 350° C. The XMPO4, nH2O compound further exhibits a particular morphology in the form of platelets that is preserved during the reaction between the two precursors. The LiMPO4 compound thus synthesized is advantageously used as active material of an electrode for a lithium storage battery.Type: GrantFiled: March 12, 2008Date of Patent: March 26, 2013Assignee: Commissariat a l'Energie AtomiqueInventors: Sebastian Patoux, Carole Pagano, Carole Bourbon, Frederic Le Cras
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Publication number: 20130065117Abstract: Disclosed are a novel compound, a method for preparing the same, and a lithium secondary battery comprising the same. More specifically, disclosed are a compound in which five MO6 octahedrons are bonded to one another around one MO6 octahedron such that the MO6 octahedrons share a vertex, to form hollows and Li cations substituted instead of Na cations using an ion substitution method are present in the hollows, and a crystal structure thereof is not varied even upon intercalation and deintercalation of Li cations, a method for preparing the same, and a lithium secondary battery comprising the same as a cathode active material.Type: ApplicationFiled: February 16, 2012Publication date: March 14, 2013Applicant: LG CHEM, LTD.Inventors: YoungHwa Jung, Youngsun Choi, Seung-Tae Hong
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Publication number: 20130059204Abstract: An electrode, free of added conductive agent, for a secondary lithium-ion battery with a lithium-metal-oxygen compound as active material, and a secondary lithium-ion battery which contains the electrode.Type: ApplicationFiled: January 28, 2011Publication date: March 7, 2013Applicant: Sued-Chemie IP GmbH & Co., KGInventors: Michael Holzapfel, Nicolas Tran
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Publication number: 20130045158Abstract: Process for preparing a lithium-containing mixed oxide powder, wherein a) a stream of a solution containing at least one lithium compound and at least one metal compound of one or more mixed oxide components in the required stoichiometric ratio is atomized by means of an atomizer gas to give an aerosol having an average droplet size of less than 100 ?m, b) the aerosol is reacted in a reaction space by means of a flame obtained from a mixture of fuel gas and air, with the total amount of oxygen being sufficient for at least complete reaction of the fuel gas and of the metal compounds, c) the reaction stream is cooled and d) the solid product is subsequently separated off from the reaction stream.Type: ApplicationFiled: June 7, 2011Publication date: February 21, 2013Applicant: Evonik Degussa GmbHInventors: Stipan Katusic, Peter Kress
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Publication number: 20130034490Abstract: A method is provided for producing separated substances, particularly metal compounds, the dopant element amounts of which have been controlled by the use of an apparatus that processes fluid between the processing surfaces of a processing member that can be made to approach/separate and which rotate relative to each other. The substance to be separated is separated by mixing a raw material solution, wherein the substance to be separated is solubilized in a solvent, with the solvent for separation and with the dopant element or dopant element-containing substance solubilized in at least one solvent selected from the solvent of said raw material solution, said solvent for separation or a solvent other than that of said raw material solution or said solution for separation. Separated substances with controlled dopant element amounts are obtained by controlling the solubility of the dopant element or dopant element-containing substance in the solvent for separation.Type: ApplicationFiled: May 25, 2010Publication date: February 7, 2013Applicant: M. TECHNIQUE CO., LTD.Inventor: Masakazu Enomura
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Publication number: 20130011331Abstract: Active material particles are provided that exhibit performance suitable for increasing the output of a lithium secondary battery and little deterioration due to charge-discharge cycling. The active material particles provided by the present invention have a hollow structure having secondary particles including an aggregate of a plurality of primary particles of a lithium transition metal oxide, and a hollow portion formed inside the secondary particles, and through holes that penetrates to the hollow portion from the outside are formed in the secondary particles. BET specific surface area of the active material particles is 0.5 to 1.9 m2/g.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Inventors: Hiroki Nagai, Masahiro Morita, Kensaku Mori, Shin Imaizum, Kenji Ikeuchi, Toshiyuki Osako, Hiroyuki Toya
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Positive electrode active material and non-aqueous electrolyte secondary battery containing the same
Patent number: 8349287Abstract: The present invention relates to a positive electrode active material comprising a lithium-containing composite oxide containing nickel with an oxidation state of 2.0 to 2.5 and manganese with an oxidation state of 3.5 to 4.0, the oxidation state determined by the shifts of energy at which absorption maximum is observed in the X-ray absorption near-K-edge structures, and to a non-aqueous electrolyte secondary battery using the same, the positive electrode active material being characterized in having a high capacity, a long storage life and excellent cycle life.Type: GrantFiled: May 1, 2007Date of Patent: January 8, 2013Assignees: Panasonic Corporation, Osaka City UniversityInventors: Tsutomu Ohzuku, Hiroshi Yoshizawa, Masatoshi Nagayama -
Patent number: 8349286Abstract: A lithium-transition metal complex compound has an nth order hierarchical structure in which n type structures represented by at least one unit of ath order units in a range of 1×10?(a+5) m to 10×10?(a+5) m exist in a complex form, wherein n is a natural number that is 2 or greater, and a is a natural number in a range of 1 to 5. The lithium-transition metal complex may be prepared by heat-treating a mixture including a lithium source, a transition metal source, and solvent in contact with a natural material having a hierarchical structure. A lithium battery includes an electrode including the lithium-transition metal complex compound having the nth order hierarchical structure. The lithium battery can have improved rapid charging characteristics, high power characteristics, and cycle characteristics.Type: GrantFiled: March 6, 2009Date of Patent: January 8, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Yoonsok Kang, Joungwon Park, Guesung Kim, Jaegu Yoon
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Patent number: 8333950Abstract: A method of producing lithium metal oxides can include mixing lithium salt and a metal oxide to form a composition, heating the composition in a first reactor, transferring the composition to a second reactor, and passing the composition through the second reactor to anneal the composition to form lithium metal oxides. The second reactor can be a fluidized bed reactor. The lithium metal oxide can have an average crystal size of between about 5 microns and about 20 microns.Type: GrantFiled: August 17, 2010Date of Patent: December 18, 2012Assignee: Honeywell International Inc.Inventors: Horst Krampitz, Michael Fooken, Wilhelm Sellmann
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Patent number: 8323612Abstract: The present invention relates to lithium manganate particles having a primary particle diameter of 1 to 8 ?m and forming substantially single-phase particles, which have a composition represented by the following chemical formula: Li1+xMn2-x-yY1yO4+Y2 in which Y1 is at least one element selected from the group consisting of Ni, Co, Mg, Fe, Al, Cr and Ti; Y2 is P and is present in an amount of 0.01 to 0.6 mol % based on Mn; and x and y satisfy 0.03?x?0.15 and 0.05?y?0.20, respectively, and which lithium manganate particles have a specific surface area of the lithium manganate particles of 0.3 to 0.9 m2/g (as measured by BET method); and have an average particle diameter (D50) of the lithium manganate particles of 3 to 10 ?m. A positive electrode active substance of a lithium ion secondary battery using the lithium manganate particles of the present invention has a high output and is excellent in high-temperature stability.Type: GrantFiled: December 26, 2008Date of Patent: December 4, 2012Assignee: Toda Kogyo CorporationInventors: Kazumichi Koga, Masayuki Uegami, Kazutoshi Ishizaki, Hideaki Sadamura
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Publication number: 20120283096Abstract: The present invention relates to (i) a plant growth-improving agent containing a growth-improving component that increases a concentration of an oxoanion in an area around a plant, the oxoanion being heavier than a sulfate ion and containing four oxygen atoms, (ii) a seed to which such a plant growth-improving agent has been applied, and (iii) a plant growth-improving method including a cultivating step of growing a plant in the presence of such a growth-improving component.Type: ApplicationFiled: January 26, 2011Publication date: November 8, 2012Applicant: Incorporated Administrative Agency National Agricu lture and Food Research OrganizationInventor: Yoshitaka Hara
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Patent number: 8303927Abstract: A manufacturing method of the present invention includes (a) a material preparation step of preparing a material containing lithium, manganese, and bismuth, and (b) a firing step of firing the material prepared by the material preparation step at a temperature of 830° C. to 1,000° C. In the material preparation step, the material is prepared such that the residual amount of bismuth in spinel-type lithium manganate yielded by the firing step is 0.01 mol % or less with respect to manganese.Type: GrantFiled: June 1, 2010Date of Patent: November 6, 2012Assignee: NGK Insulators, Ltd.Inventors: Yukinobu Yura, Nobuyuki Kobayashi
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Patent number: 8303841Abstract: A method for preparing a cathode active material of lithium battery is shown. The method includes providing MnOOH and lithium source material, and mixing the MnOOH and the lithium source material in a liquid solvent to achieve a mixture. Then, the mixture is dried to remove the liquid solvent, thereby achieving a precursor. A temperature of the precursor is elevated from room temperature to a sintering temperature of about 500° C. to about 900° C. at a uniform rate, and the precursor is sintered at the sintering temperature for about 3 hours to about 24 hours.Type: GrantFiled: September 10, 2010Date of Patent: November 6, 2012Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Ya-Dong Li, Xiao-Ling Xiao, Ding-Sheng Wang
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Patent number: 8241595Abstract: A potassium titanate, method for manufacturing the potassium titanate, a friction material using the potassium titanate and a resin composition using the potassium titanate are disclosed. The potassium titanate is represented by K2TinO(2n+1) (n=4.0-11.0) and has the highest X-ray diffraction intensity peak (2?) in the range of 11.0°-13.5° with its half width being not less than 0.5°.Type: GrantFiled: February 25, 2011Date of Patent: August 14, 2012Assignee: Otsuka Chemical, Co., Ltd.Inventor: Nobuki Itoi
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Publication number: 20120134914Abstract: Disclosed is a cathode active material and a method to produce the same at low cost. The cathode powder comprises modified LiCoO2, and possibly a second phase which is LiM?O2 where M? is Mn, Ni, Co with a stoichiometric ratio Ni:Mn?1. The modified LiCoO2 is Ni and Mn bearing and has regions of low and high manganese content, where regions with high manganese content are located in islands on the surface. The cathode material has high cycling stability, a very high rate performance and good high temperature storage properties.Type: ApplicationFiled: December 1, 2011Publication date: May 31, 2012Inventors: Jens Martin Paulsen, Hyunjoo JE, Maxime Blangero
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Patent number: 8178072Abstract: The present invention provides a method of manufacturing an alkali metal titanate, the method including at least a first step of mixing a titanium compound and an alkali metal compound to prepare a first mixture and sintering the first mixture, and a second step of adding the alkali metal compound to the sintered body, which is formed at the first step, to prepare a second mixture and sintering the second mixture. The present invention provides the alkali metal titanate having a desired composition and a single-phase.Type: GrantFiled: October 14, 2008Date of Patent: May 15, 2012Assignee: Toho Titanium Co., Ltd.Inventors: Naomichi Hori, Nobuo Kamishima
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Patent number: 8137844Abstract: A method for manufacturing a cathode active material for a lithium rechargeable battery, including: selecting a first metal compound from a group consisting of a halide, a phosphate, a hydrogen phosphate and a sulfate of Mg or Al; selecting a second metal compound from a group consisting of an oxide, a hydroxide and a carbonate of Mg or Al; combining the first metal compound and the second metal compound to obtain a metal compound, the metal compound containing either Mg or Al atoms; mixing a lithium compound, a transition metal compound and the metal compound to obtain a mixture; and sintering the mixture.Type: GrantFiled: November 16, 2007Date of Patent: March 20, 2012Assignee: Nippon Chemical Industrial Co., Ltd.Inventors: Hidekazu Awano, Minoru Fukuchi, Yuuki Anbe
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Publication number: 20110300044Abstract: Corrosion inhibitors and processes, uses, methods, compositions, devices, and apparatus involving corrosion inhibitors are disclosed. In certain embodiments the use of specific corrosion inhibitors, specific concentrations of inhibitors, blends of inhibitors, processes utilizing such inhibitors, and compositions comprising such inhibitors, for example in acid gas separation systems such as aqueous amine- or ammonia-based CO2 separation systems (e.g., the post combustion capture of CO2 from flue gases using amines). According to some embodiments, corrosion inhibitors are used in a process for separating at least a portion of an acid gas from a gaseous mixture wherein the inhibitor is at least one selected from dodecylamine, sodium molybdate, morpholine, or a combination thereof.Type: ApplicationFiled: May 5, 2011Publication date: December 8, 2011Applicant: University of ReginaInventors: Paitoon Tontiwachwuthikul, Raphael Idem, Nattawan Kladkaew, Chintana Saiwan
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Patent number: 8048398Abstract: Process for preparing a mixed metal oxide powder, in which oxidizable starting materials are evaporated and oxidized, the reaction mixture is cooled after the reaction and the pulverulent solids are removed from gaseous substances, wherein as starting materials, at least one pulverulent metal and at least one metal compound, the metal and the metal component of the metal compound being different and the proportion of metal being at least 80% by weight based on the sum of metal and metal component from metal compound, together with one or more combustion gases, are fed to an evaporation zone of a reactor, where metal and metal compound are evaporated completely under nonoxidizing conditions, subsequently, the mixture flowing out of the evaporation zone is reacted in the oxidation zone of this reactor with a stream of a supplied oxygen-containing gas whose oxygen content is at least sufficient to oxidize the starting materials and combustion gases completely.Type: GrantFiled: May 9, 2007Date of Patent: November 1, 2011Assignee: Evonik Degussa GmbHInventors: Stipan Katusic, Guido Zimmermann, Michael Kraemer, Peter Kress, Horst Miess
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Patent number: 8034486Abstract: Disclosed is a positive active material for a rechargeable lithium battery. The positive active material includes a core and a surface-treatment layer on the core. The core includes at least one lithiated compound and the surface-treatment layer includes at least one coating material selected from the group consisting of coating element included-hydroxides, oxyhydroxides, oxycarbonates, hydroxycarbonates and any mixture thereof.Type: GrantFiled: July 28, 2003Date of Patent: October 11, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Ho-Jin Kweon, Joon-Won Suh
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Publication number: 20110227003Abstract: A non-lead composition for use as a thick-film resistor paste in electronic applications. The composition comprises particles of Li2RuO3 of diameter between 0.5 and 5 microns and a lead-free frit. The particles have had the lithium at or near primarily the surface of the particle at least partially exchanged for atoms of other metals.Type: ApplicationFiled: May 31, 2011Publication date: September 22, 2011Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: PAUL DOUGLAS VERNOOY, Alfred T. Walker, Kenneth Warren Hang
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Patent number: 7988880Abstract: In order to provide a novel spinel type lithium transition metal oxide (LMO) having excellent power performance characteristics, in which preferably both the power performance characteristics and the cycle performance at high temperature life characteristics may be balanced, a novel spinel type lithium transition metal oxide with excellent power performance characteristics is proposed by defining the inter-atomic distance Li—O to be 1.978 ? to 2.006 ? as measured by the Rietveld method using the fundamental method in a lithium transition metal oxide represented by the general formula Li1+xM2?xO4 (where M is a transition metal consisting of three elements Mn, Al and Mg and x is 0.01 to 0.08).Type: GrantFiled: October 23, 2008Date of Patent: August 2, 2011Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Naoki Kumada, Shinya Kagei, Yoshimi Hata, Kenji Sasaki, Yasuhiro Ochi, Keisuke Miyanohara
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Patent number: 7988831Abstract: A method for purifying an aqueous potassium hydroxide solution having rich silicon impurities has been disclosed in the invention, which is particularly related to a method that utilizes a low-carbon alcohol (such as ethanol) for extracting said aqueous potassium hydroxide solution, and includes the steps of mixing a low-carbon alcohol with an aqueous potassium hydroxide solution having rich silicon impurities; allowing the resulting mixture therefrom to divide into an aqueous phase layer and a low-carbon alcohol phase layer that contains the aqueous potassium hydroxide solution with reduced silicon impurities, and subjecting the low-carbon alcohol phase layer to a separation process for removing the low-carbon alcohol, thereby resulting in an aqueous potassium hydroxide solution having reduced silicon impurities.Type: GrantFiled: December 19, 2008Date of Patent: August 2, 2011Assignee: Yeou Fa Chemical Co., Ltd.Inventors: Yung Hsiung Hsu, Sage Hsu
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Publication number: 20110171095Abstract: A method is provided for the synthesis of a mesoporous lithium transition metal compound, the method comprising the steps of (i) reacting a lithium salt with one or more transition metal salts in the presence of a surfactant, the surfactant being present in an amount sufficient to form a liquid crystal phase in the reaction mixture (ii) heating the reaction mixture so as to form a sol-gel and (iii) removing the surfactant to leave a mesoporous product. The mesoporous product can be an oxide, a phosphate, a borate or a silicate and optionally, an additional phosphate, borate or silicate reagent can be added at step (i). The reaction mixture can comprise an optional chelating agent and preferably, the reaction conditions at steps (i) and (ii) are controlled so as to prevent destabilisation of the liquid crystal phase. The invention is particularly suitable for producing mesoporous lithium cobalt oxide and lithium iron phosphate.Type: ApplicationFiled: October 19, 2009Publication date: July 14, 2011Applicant: QINETIQ LIMITEDInventors: Gary Owen Mepsted, Emmanuel Imasuen Eweka
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Publication number: 20110151329Abstract: A positive electrode of an accumulator with an alkaline electrolyte comprising a nickel-based hydroxide and a lithiated oxide of formula LixMO2 wherein M represents at least one transition metal, 0.1?×?1, said lithiated oxide having a specific surface area as measured by the BET technique of less than 40 m2/g and a grain size of less than 1 ?m. A method for making a lithiated oxide of at least one transition metal comprising the steps of: a) providing a powder of an hydroxide of said at least one transition metal, b) suspending the powder in a lithine solution in the presence of a stream of a oxidizing gas in order to form a lithiated oxide of said at least one transition metal, the lithine concentration being at least equal to about 1 mol/L, c) adding to the suspension of step b) a solution containing an oxidizing compound, d) filtering the suspension, e) washing and drying the suspension.Type: ApplicationFiled: August 25, 2009Publication date: June 23, 2011Applicant: Saft Group SAInventors: Patrick Bernard, Lionel Goubault, Rémi Najean
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Patent number: 7959882Abstract: A process for preparing lithium-rich metal oxides. The process comprises subjecting a mixture of a metal oxide or a metal oxide with low lithium content and a lithium sulfide in a solid state to a thermal treatment to form a lithium-rich metal oxide and elemental sulfur and subliming off the elemental sulfur. The lithium-rich metal oxides produced from the process may be used as cathode material in lithium ion batteries or electrochemical cells. Suitable metal oxides may be selected from metal oxides of the elements of group Va to VIIa of the Periodic Table and may include vanadium oxides, manganese dioxide, manganese oxide, chromium trioxide, niobium pentoxide, tantalum pentoxide, molybdenum oxides or tungsten trioxide. Metal oxides with low lithium content are metal oxides as defined above which comprise a small amount of lithium, in which the molar ratio of lithium atoms to metal atoms is not more than 1:2.30.Type: GrantFiled: April 14, 2008Date of Patent: June 14, 2011Assignee: BASF SEInventors: Kirill Bramnik, Hartmut Hibst, Julian Prölβ
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Patent number: 7943111Abstract: The present invention provides for a process of making a Ni-based lithium transition metal oxide cathode active materials used in lithium ion secondary batteries. The cathode active materials are substantially free of Li2CO3 impurity and soluble bases.Type: GrantFiled: February 20, 2009Date of Patent: May 17, 2011Assignee: LG Chem, Ltd.Inventors: Jens M. Paulsen, Hong-Kyu Park, Yong Hoon Kwon
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Patent number: 7943113Abstract: There is provided Lithium-manganese oxides expressed as the following chemical formula 1, Li1+xMn1?x?yMyO2+z,??[Chemical Formula 1] wherein 0.01?x?0.5, 0?y?0.3, ?0.2?z?0.2, and M is a metal selected from the group consisting of Ti, Mn, V, Cr, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, W, Ag, Sn, Ge, Si, Al, and alloy thereof.Type: GrantFiled: December 13, 2007Date of Patent: May 17, 2011Assignee: Korea Institute of Geoscience and Mineral ResourcesInventors: Kang-Sup Chung, Jae-Chun Lee, Jin-Ki Jeong, Yang-Soo Kim, Hee-Jin Kim
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Patent number: 7939049Abstract: The present invention provides for Ni-based lithium transition metal oxide cathode active materials used in lithium ion secondary batteries. The cathode active materials are substantially free of Li2CO3 impurity and soluble bases.Type: GrantFiled: February 20, 2009Date of Patent: May 10, 2011Assignee: LG Chem, Ltd.Inventors: Jens M. Paulsen, Hong-Kyu Park, Yong Hoon Kwon
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Patent number: 7939203Abstract: The present invention provides for lithium ion secondary batteries that use Ni-based lithium transition metal oxide cathode active materials. The cathode active materials are substantially free of Li2CO3 impurity and soluble bases.Type: GrantFiled: February 20, 2009Date of Patent: May 10, 2011Assignee: LG Chem, Ltd.Inventors: Jens M. Paulsen, Hong-Kyu Park, Yong Hoon Kwon
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Patent number: 7901659Abstract: Potassium titanate is obtained which has a novel configuration, exhibits excellent wear resistance when incorporated in a friction material and shows an excellent reinforcement performance when incorporated in a resin composition. A manufacturing method of the potassium titanate, a friction material using the potassium titanate and a resin composition using the potassium titanate are also obtained. The potassium titanate is represented by K2TinO(2n+1) (n=4.0-11.0) and has the highest X-ray diffraction intensity peak (26) in the range of 11.0°-13.5° with its half width being not less than 0.5°.Type: GrantFiled: April 3, 2008Date of Patent: March 8, 2011Assignee: Otsuka Chemical Co., Ltd.Inventor: Nobuki Itoi
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Patent number: 7901658Abstract: The present invention concerns chemically stable solid lithium ion conductors, processes for their production and their use in batteries, accumulators, supercaps and electrochromic devices.Type: GrantFiled: March 3, 2005Date of Patent: March 8, 2011Inventors: Werner Weppner, Venkataraman Thangadurai
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Publication number: 20110052484Abstract: A method of producing lithium metal oxides can include mixing lithium salt and a metal oxide to form a composition, heating the composition in a first reactor, transferring the composition to a second reactor, and passing the composition through the second reactor to anneal the composition to form lithium metal oxides. The second reactor can be a fluidized bed reactor. The lithium metal oxide can have an average crystal size of between about 5 microns and about 20 microns.Type: ApplicationFiled: August 17, 2010Publication date: March 3, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Horst Krampitz, Michael Fooken, Wilhelm Sellmann
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Patent number: 7897135Abstract: The present invention is generally directed to a novel, economic synthesis of oxide ceramic composites. Methods of the present invention, referred to as carbon combustion synthesis of oxides (CCSO), are a modification of self-propagating high-temperature synthesis (SHS) methods in which the heat needed for the synthesis is generated by combustion of carbon in oxygen rather than that of a pure metal. This enables a more economic production of the ceramic material and minimizes the presence of intermediate metal oxides in the product. The reactant mixture generally comprises at least one oxide precursor (e.g., a metal or non metal oxide, or super oxide, or nitride, or carbonate, or chloride, or oxalate, or halides) as a reactant, but no pure metal. Pure carbon in the form of graphite or soot is added to the reactant mixture to generate the desired heat (upon ignition). The mixture is placed in a reactor and exposed to gaseous oxygen.Type: GrantFiled: September 21, 2005Date of Patent: March 1, 2011Assignee: University of HoustonInventors: Karen S. Martirosyan, Dan Luss