Vanadium, Niobium, Or Tantalum Containing (e.g., Vanadate, Niobate, Tantalate, Etc.) Patents (Class 423/594.8)
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Patent number: 8227114Abstract: The method of preparing a negative active material for a non-aqueous electrolyte rechargeable battery includes mixing a vanadium compound and a lithium compound and then subjecting the mixture to first firing to obtain Li1.0(VxMy)1.0O2 having a layered halite type structure (where 0.5?x?1.0, 0?y?0.5, x+y=1, and M is selected from the group consisting of group 2 to 15 elements of the periodic table and combinations thereof); and adding a lithium compound to the Li1.0(VxMy)1.0O2 and then subjecting the resultant to second firing. The negative active material for a non-aqueous electrolyte rechargeable battery prepared according to the preparing method has high crystallinity, and excellent charge and discharge characteristics at a high rate.Type: GrantFiled: July 3, 2008Date of Patent: July 24, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Tetsuo Tokita, Hideaki Maeda, Naoya Kobayashi, Sung-Soo Kim
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Patent number: 8227100Abstract: The present invention relates to a negative active material for a lithium ion battery and a lithium ion battery including the negative active material. The negative active material for a lithium ion battery includes a hexagonal lithium vanadium composite oxide including lithium, vanadium, and magnesium. The lithium and the vanadium are included in a mole ratio within a range of 1.15?Li/V?1.35, and the magnesium and the vanadium are included in a mole ratio within a range of 0.01?Mg/V?0.06. The present invention provides a negative active material for a lithium ion battery having a stable crystal structure, excellent high rate of charge and discharge, and good charge and discharge cycle characteristics.Type: GrantFiled: December 10, 2008Date of Patent: July 24, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Toru Inagaki, Akira Takamuku, Geun-Bao Kim
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Publication number: 20120145953Abstract: Disclosed are lithium-containing compounds and methods of utilizing the same. The disclosed compounds may be used to deposit alkali metal-containing layers using vapor deposition methods such as chemical vapor deposition or atomic layer deposition. In certain embodiments, the lithium-containing compounds include a ligand and at least one aliphatic group as substituents selected to have greater degrees of freedom than the usual substituent.Type: ApplicationFiled: June 30, 2010Publication date: June 14, 2012Inventors: Venkateswara R. Pallem, Christian Dussarrat
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Patent number: 8187705Abstract: Manganese vanadium tantalum oxide that can be represented by the formula MnxVyTazOw, where 1?x?3, 0.001?y?3, 0.001?z?2, and w=7, and alternately, x=1.25?x?2.45, 0.1?y?2.39, 0.2?z?1.9, and w=7, methods of producing MnxVyTazOw, a pigment coated with MnxVyTazOw and a chalcogenide glass layer, and a method of producing the coated pigment are described. The disclosed manganese vanadium tantalum oxide has superior near-infrared reflective properties. The disclosed methods of producing the manganese vanadium tantalum oxide provide products with superior phase purity, appearance and performance and take health and safety into consideration. The construction of the disclosed coated pigment combines the reflective properties of the substrate with the near-infrared reflective properties of MnxVyTazOw, while the chalcogenide glass layer provides aesthetic appeal. The disclosed method of producing the coated pigment involves physical vapor deposition of MnxVyTazOw and the chalcogenide glass layer.Type: GrantFiled: July 15, 2010Date of Patent: May 29, 2012Assignee: Silberline Manufacturing Company, Inc.Inventors: Stewart Warrender, Hai Hui Lin, Parfait Jean Marie Likibi, Rajasekar Pitchimani, Devidas Balu Raskar, David Aldous
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Publication number: 20120091389Abstract: A process for the preparation of a niobium compound of formula (I): D?Nb?E?O3-???(I) wherein D is an alkali metal (e.g. Li, Na, K, Rb, Cs and/or Fr), alkaline earth metal (such as Ba, Ca, Mg and/or Sr), La and/or Bi and may be present as a mixture of two or more metals; E is Ta, Sb and/or Fe and may be present as a mixture of two or more metals; ? is a positive number ? is a positive number ? is zero or a positive number ? is a number 0???0.5; and wherein the formula (I) has the perovskite or tungsten bronze structure; comprising spray pyrolising a solution, for example an aqueous solution, comprising metal (D) ions, Nb ions and if present, metal (E) ions.Type: ApplicationFiled: March 4, 2010Publication date: April 19, 2012Applicant: CERPOTECH ASInventors: Francesco Madaro, Tor Grande, MariAnn Einarsrud, Kjell Wiik
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Publication number: 20120068070Abstract: A pyroelectric material is made of lithium tantalate treated to an extent that a bulk resistivity is in a range of less than 2e+14?*cm, preferably less than 5e+12?*cm, but more than a lower threshold is obtained.Type: ApplicationFiled: January 7, 2010Publication date: March 22, 2012Applicant: EXCELITAS TECHNOLOGIES GMBH & CO. KGInventors: Fred Plotz, Gerhard Knaup, Henrik Ernst
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Patent number: 8137646Abstract: A mixture of zirconium hydroxides or zirconium basic carbonate with vanadium oxide (V205) co-reacts in high temperature aqueous slurry to form respectively an amorphous material, believed to be based on a zirconium analog of a zeolite structure, and a solid solution of zirconium oxide with vanadium oxide. The subject compositions, free of hexavalent chromium, are highly effective in providing blister-free corrosion prevention in typical coil and aerospace grade epoxy primer and color coat combinations.Type: GrantFiled: March 25, 2008Date of Patent: March 20, 2012Assignee: The Shepherd Color CompanyInventor: Simon Boocock
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Publication number: 20120064344Abstract: Disclosed are a method of producing fine particulate alkali metal niobate in a liquid phase system, wherein the size and shape of the particulate alkali metal niobate can be controlled; and fine particulate alkali metal niobate having a controlled shape and size. One of specifically disclosed is a method of producing a substantially rectangular cuboid particulate alkali metal niobate represented by MNbO3 (1), wherein M represents one element selected from alkaline metals, including specific four steps. Another one of specifically disclosed is particulate alkali metal niobate represented by the formula (1) having a substantially rectangular cuboid shape, wherein the substantially rectangular cuboid shape has a longest side and a shortest side, the length of the longest side represented by an index Lmax is 0.10 to 25 ?m, and the length of the shortest side represented by an index Lmin is 0.050 to 15 ?m.Type: ApplicationFiled: April 5, 2010Publication date: March 15, 2012Applicants: SAKAI CHEMICAL INDUSTRY CO., LTD., FUJI CERAMICS CORPORATION, TOHOKU UNIVERSITYInventors: Atsushi Muramatsu, Kiyoshi Kanie, Atsuki Terabe, Yasuhiro Okamoto, Hideto Mizutani, Satoru Sueda, Hirofumi Takahashi
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Patent number: 8124047Abstract: A method for manufacturing (Li, Na, K)(Nb, Ta)O3 type piezoelectric material having an improved relative dielectric constant and an electric-field-induced strain is provided. The method is a process in which a formed body of powder particles constituted of a composition of (Li, Na, K)(Nb, Ta)O3 is fired to produce the (Li, Na, K)(Nb, Ta)O3 type piezoelectric material, and a constant temperature is kept in a range of 850 to 1000° C. for a constant time before heating to a firing temperature.Type: GrantFiled: December 18, 2007Date of Patent: February 28, 2012Assignee: NGK Insulators, Ltd.Inventors: Kazuyuki Kaigawa, Shuichi Ozawa, Hirofumi Yamaguchi
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Patent number: 8088349Abstract: Disclosed is a clean method for preparing layered double hydroxides (LDHs), in which hydroxides of different metals are used as starting materials for production of LDHs by atom-economical reactions. The atom efficiency of the reaction is 100% in each case because all the atoms of the reactants are converted into the target product since only M2+(OH)2, M3+(OH)3, and CO2 or HnAn? are used, without any NaOH or other materials. Since there is no by-product, filtration or washing process is unnecessary. The consequent reduction in water consumption is also beneficial to the environment.Type: GrantFiled: September 11, 2007Date of Patent: January 3, 2012Assignee: Beijing University of Chemical TechnologyInventors: Xue Duan, Dianqing Li, Zhi Lv, Yanjun Lin, Xiangyu Xu
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Publication number: 20110311805Abstract: The invention relates to a cutting tool having a substrate base body and a single or multi-layered coating attached thereupon, wherein at least one layer of the coating is a metal oxide layer produced in the PVD process or in the CVD process and the metal oxide layer has a grain structure wherein there is structural disorder within a plurality of the existing grains that are characterized in that in electron diffraction images of the grains, point-shaped reflections occur up to a maximum lattice spacing dGRENZ and for lattice spacing greater than dGRENZ no point-shaped reflections occur, but rather a diffuse intensity distribution typical for amorphous structures.Type: ApplicationFiled: March 18, 2010Publication date: December 22, 2011Applicant: WALTER AGInventors: Veit Schier, Oliver Eibl, Wolfgang Engelhart
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Patent number: 8062792Abstract: Processes are provided for making dense, spherical mixed-metal carbonate or phosphate precursors that are particularly well suited for the production of active materials for electrochemical devices such as lithium ion secondary batteries. Exemplified methods include precipitating dense, spherical particles of metal carbonates or metal phosphates from a combined aqueous solution using a precipitating agent such as ammonium hydrogen carbonate, sodium hydrogen carbonate, or a mixture that includes sodium hydrogen carbonate. Other exemplified methods include precipitating dense, spherical particles of metal phosphates using a precipitating agent such as ammonium hydrogen phosphate, ammonium dihydrogen phosphate, sodium phosphate, sodium hydrogen phosphate, sodium dihydrogen phosphate, or a mixture of any two or more thereof. Further provided are compositions of and methods of making dense, spherical metal oxides and metal phosphates using the dense, spherical metal precursors.Type: GrantFiled: April 25, 2006Date of Patent: November 22, 2011Assignee: UChicago Argonne LLCInventors: Sun-Ho Kang, Khalil Amine
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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: 8026004Abstract: A negative active material for a rechargeable lithium battery may include a compound powder represented by the following formula 1 LixMyVzO2+d??[Formula 1] where 1?x?2.5, 0?y?0.5, 0.5?z?1.5, 0?d?0.5, and M is an element selected from Al, Cr, Mo, Ti, W, Zr, and combinations thereof. The compound powder may include a multi-faced particle that has a plurality of flattened parts on a particle surface at the plan view of the multi-faced particle. The multi-faced particle may have at least three ridgelines at a boundary between adjacent flattened parts. At least one of the ridgeline may be formed by adjacent flattened parts having an angle of at least 90°. A ratio of a length (L) of each ridgeline and the maximum diameter (Rmax) of the multi-faced particle may be greater than 0.1.Type: GrantFiled: December 20, 2006Date of Patent: September 27, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Akira Takamuku, Sung-Soo Kim
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Patent number: 8026003Abstract: A negative active material of a non-aqueous electrolyte battery includes a compound represented by formula 1: LixMyVzO2+d??(1) where 0.1?x?2.5, 0<y?0.5, 0.5?z?1.5, 0?d?0.5, and M is at least one element selected from the group consisting of Al, Cr, Mo, Ti, W, and Zr.Type: GrantFiled: August 19, 2004Date of Patent: September 27, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Sung-Soo Kim, Kyou-Yoon Sheem, Sang-Min Lee, Sang-Jin Kim, Joon-Sup Kim, Bok-Hwan Jung, Goo-Jin Jeong
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Patent number: 8012449Abstract: A method of manufacturing a complex metal oxide powder, the method including: preparing a raw material composition for forming a complex metal oxide; mixing an oxidizing solution including an oxidizing substance into the raw material composition to produce complex metal oxide particles to obtain a liquid dispersion of the particles; and separating the particles from the liquid dispersion to obtain a complex metal oxide powder. The complex metal oxide is shown by a general formula AB1?xCxO3, an element A including at least Pb, an element B including at least one of Zr, Ti, V, W, and Hf, and an element C including at least one of Nb and Ta.Type: GrantFiled: June 26, 2007Date of Patent: September 6, 2011Assignee: Seiko Epson CorporationInventors: Takeshi Kijima, Hidemichi Furihata, Setsuya Iwashita, Satoshi Kimura, Toshihiko Kaneda
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Patent number: 8008035Abstract: The present invention is directed to a composition comprising a vanadium-containing phosphatase inhibitor and a polyol. In the presence of the polyol the effect of the inhibitor is enhanced, even in the presence of chelating agents or reducing agents. The invention also concerns the use of the inventive composition for inhibiting a phosphatase, as well as kits comprising the composition.Type: GrantFiled: January 21, 2008Date of Patent: August 30, 2011Assignee: Roche Diagnostics Operations, Inc.Inventors: Erhard Fernholz, Dorothea Mayr
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Patent number: 7981545Abstract: A negative active material for a rechargeable lithium battery includes a lithium vanadium composite oxide represented by LixMyVzO2+d, where: 0.1?x?2.5, 0?y?0.5, 0.5?z?1.5, 0?d?0.5, and M is selected from the group consisting of Al, Cr, Mo, Ti, W, Zr, and combinations thereof) and a compound attached to the surface of the vanadium composite oxide. The compound includes an element selected from the group consisting of Groups 2 to 15 elements and combinations thereof. The negative active material can provide good energy density per volume and high-capacity, to provide a battery having good cycle-life and safety.Type: GrantFiled: December 28, 2007Date of Patent: July 19, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Akira Takamuku, Sung-Soo Kim
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Publication number: 20110151283Abstract: Thin-film lithium-based batteries and electrochromic devices (10) are fabricated with positive electrodes (12) comprising a nanocomposite material composed of lithiated metal oxide nanoparticles (40) dispersed in a matrix composed of lithium tungsten oxide.Type: ApplicationFiled: August 31, 2007Publication date: June 23, 2011Applicant: ALLIANCE FOR SUSTAINABLE ENERGY, LLC.Inventors: Dane T. Gillaspie, Se-Hee Lee, C. Edwin Tracy, John Roland Pitts
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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: 7959893Abstract: The invention relates to a method for preparing a lithium and vanadium oxide and the thus obtained products. The method comprises preparing a precursor gel by reacting hydrogen peroxide with ?-V2O5 in an aqueous medium in the presence of a lithium precursor and exposing the gel to a heat treatment in an oxidant atmosphere at a temperature ranging from 260° C. to 580° C. A compound of a formula Li1+xV3O8, (0.1<x<0.25) comprises needle-shaped grains having a bimodal distibution, wherein the length (L) of the first distribution needles ranges from 10 to 50 ?m and the length (L) of the second distribution needles ranges from 1 to 10 ?m.Type: GrantFiled: February 16, 2005Date of Patent: June 14, 2011Assignees: Batscap, Centre National de la Recherche ScientifiqueInventors: Dominique Guyomard, Matthieu Dubarry, Marc Deschamps, Joël Gaubicher
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Patent number: 7943112Abstract: Methods relate to making lithium vanadium oxide powders. Applications for the lithium vanadium oxide powders include use as a negative electrode or anode material for lithium ion batteries. Liquid phase reactions and reduction in vanadium oxidation state of precursor material facilitate in the making of the lithium vanadium oxide powders. Particles forming the lithium vanadium oxide powders may further contain carbon to provide electrical conductivity.Type: GrantFiled: May 24, 2010Date of Patent: May 17, 2011Assignee: ConocoPhillips CompanyInventors: Zhenhua Mao, Mark W. Carel
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Publication number: 20110105790Abstract: A method for the production of a nanocrystalline molybdenum mixed oxide, the use of the molybdenum mixed oxide as catalyst for chemical conversions, in particular for a conversion of acrolein to acrylic acid as well as a catalyst that contains the molybdenum mixed oxide.Type: ApplicationFiled: April 3, 2009Publication date: May 5, 2011Applicant: SUD-CHEMIE AGInventors: Alfred Hagemeyer, Gerhard Mestl, Silvia Neumann, Hans-Jörg Wölk
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Publication number: 20110084238Abstract: The present invention relates to a process for preparing lithium vanadium oxides and also a process for producing mixtures of a lithium vanadium oxide and at least one electrically conductive material. Furthermore, the invention relates to the use of lithium vanadium oxides or of mixtures of a lithium vanadium oxide and at least one electrically conductive material for producing cathodes for batteries and in electrochemical cells. In addition, the invention relates to cathodes which comprise a lithium vanadium oxide or a mixture of a lithium vanadium oxide and at least one electrically conductive material.Type: ApplicationFiled: May 28, 2009Publication date: April 14, 2011Applicant: BASF SEInventors: Hartmut Hibst, Kirill Bramnik, Julian Proelss
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Publication number: 20110059007Abstract: The low Ta impurity content in pyrochlore ore makes it unnecessary to use a solvent extraction process to separate Nb from Ta. Consequently, niobium pentoxide powders using this ore can be produced at lower cost than competing mining/refining approaches, but in turn contain significant amounts of Ta impurities. SAW wafers are grown from melts produced by reacting niobium pentoxide powders containing Ta impurities at levels of 200 ppm or more by weight. Given proper amounts of starting powders, crystals can be grown with good yields and reproducible properties that satisfy typical SAW wafer specifications. The consistency across various lots of powders may be further improved by adding an appropriate amount of Ta pentoxide to the starting powders.Type: ApplicationFiled: August 27, 2010Publication date: March 10, 2011Inventors: Maria Claudia Custodio Kajiyama, Dieter Hans Jundt, Stephane Chamaly
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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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Patent number: 7897128Abstract: The present invention provides a process for making a complex metal oxide comprising the formula AxByOz. The process comprises the steps of: (a) reacting in solution at a temperature of between about 75° C. to about 100° C. at least one water-soluble salt of A, at least one water-soluble salt of B and a stoichiometric amount of a carbonate salt or a bicarbonate salt required to form a mole of a carbonate precipitate represented by the formula AxBy(CO3)n, wherein the reacting is conducted in a substantial absence of carbon dioxide to form the carbonate precipitate and wherein the molar amount of carbonate salt or bicarbonate salt is at least three times the stoichiometric amount of carbonate or bicarbonate salt required to form a mole of the carbonate precipitate; and (b) reacting the carbonate precipitate with an oxygen containing fluid under conditions to form the complex metal oxide.Type: GrantFiled: April 20, 2007Date of Patent: March 1, 2011Assignee: Air Products and Chemicals, Inc.Inventors: Robert Quinn, Diwakar Garg, Frederick Carl Wilhelm, Terry Lee Slager
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Publication number: 20110033752Abstract: The invention relates to the preparation of an optionally carbonaceous ?-LiV2O5 material. The process consists in preparing a composition formed of carbon and of precursors of Li and of V and in subjecting it to a heat treatment. The composition is prepared by bringing carbon, ?-V2O5 and a Li precursor into contact in amounts such that the ratio of the [V2O5]/[Li] concentrations is between 0.95 and 1.05 and the carbon is in excess of at least 25% with respect to the stoichiometry. The heat treatment is carried out in two stages: a first stage at a temperature between 90° C. and 150° C. for a time of 1 to 12 hours and a second stage at a temperature between 420° C. and 500° C. for a time of between 10 min and 1 hour, under a nitrogen or argon atmosphere or under vacuum.Type: ApplicationFiled: October 19, 2010Publication date: February 10, 2011Applicants: BATSCAP, Centre National De La Recherche ScientifiqueInventors: Dominique GUYOMARD, Joël Gaubicher, Marc Deschamps, Matthieu Dubarry, Benoit Morel
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Patent number: 7867471Abstract: A process of producing a ceramic powder including providing a plurality of precursor materials in solution, wherein each of the plurality of precursor materials in solution further comprises at least one constituent ionic species of a ceramic powder, combining the plurality of precursor materials in solution with an onium dicarboxylate precipitant solution to cause co-precipitation of the ceramic powder precursor in a combined solution; and separating the ceramic powder precursor from the combined solution. The process may further include calcining the ceramic powder precursor.Type: GrantFiled: April 3, 2009Date of Patent: January 11, 2011Assignee: SACHEM, Inc.Inventor: Wilfred Wayne Wilson
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Patent number: 7867472Abstract: An insulating target material for obtaining a conductive complex oxide film represented by a general formula ABO3. The insulating target material includes: an oxide of an element A; an oxide of an element B; an oxide of an element X; and at least one of an Si compound and a Ge compound, the element A being at least one element selected from La, Ca, Sr, Mn, Ba, and Re, the element B being at least one element selected from Ti, V, Sr, Cr, Fe, Co, Ni, Cu, Ru, Ir, Pb, and Nd, and the element X being at least one element selected from Nb, Ta, and V.Type: GrantFiled: January 19, 2007Date of Patent: January 11, 2011Assignee: Seiko Epson CorporationInventors: Koji Ohashi, Takeshi Kijima, Setsuya Iwashita
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Publication number: 20110002831Abstract: A sol-gel process for preparing a mixture of metal-oxide-metal compounds wherein at least one metal oxide precursor is subjected to a hydrolysis treatment to obtain one or more corresponding metal oxide hydroxides, the metal oxide hydroxides so obtained are subjected to a condensation treatment to form the metal-oxide-metal compounds, which process is carried out in the presence of an encapsulated catalyst, whereby the catalytically active species is released from the encapsulating unit by exposure to an external stimulus, and wherein the catalytically active species released after exposure to such external stimulus is capable of catalyzing the condensation of the metal-hydroxide groups that are present in the metal oxide hydroxides so obtained.Type: ApplicationFiled: December 15, 2008Publication date: January 6, 2011Inventors: Nanning Joerg Arfsten, Pascal Jozef Paul Buskens, Jens Christoph Thies
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Publication number: 20100301267Abstract: Methods relate to making lithium vanadium oxide powders. Applications for the lithium vanadium oxide powders include use as a negative electrode or anode material for lithium ion batteries. Liquid phase reactions and reduction in vanadium oxidation state of precursor material facilitate in the making of the lithium vanadium oxide powders. Particles forming the lithium vanadium oxide powders may further contain carbon to provide electrical conductivity.Type: ApplicationFiled: May 24, 2010Publication date: December 2, 2010Applicant: ConocoPhillips CompanyInventors: Zhenhua Mao, Mark W. Carel
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Patent number: 7842273Abstract: The invention relates to the preparation of an optionally carbonaceous ?-LiV2O5 material. The process consists in preparing a composition formed of carbon and of precursors of Li and of V and in subjecting it to a heat treatment. The composition is prepared by bringing carbon, ?-V2O5 and a Li precursor into contact in amounts such that the ratio of the [V2O5]/[Li] concentrations is between 0.95 and 1.05 and the carbon is in excess of at least 25% with respect to the stoichiometry. The heat treatment is carried out in two stages: a first stage at a temperature between 90° C. and 150° C. for a time of 1 to 12 hours and a second stage at a temperature between 420° C. and 500° C. for a time of between 10 min and 1 hour, under a nitrogen or argon atmosphere or under vacuum. Applications: positive electrode active material.Type: GrantFiled: October 18, 2005Date of Patent: November 30, 2010Assignees: Batscap, Centre National de la Recherche ScientifiqueInventors: Dominique Guyomard, Joël Gaubicher, Marc Deschamps, Matthieu Dubarry, Benoit Morel
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Patent number: 7833511Abstract: Disclosed herein are capacitors having an anode based on niobium and a barrier layer based on niobium pentoxide, at least the barrier layer having a content of vanadium and process for their preparation and use.Type: GrantFiled: October 30, 2008Date of Patent: November 16, 2010Assignee: H.C. Starck GmbHInventors: Karlheinz Reichert, Christoph Schnitter
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Publication number: 20100266485Abstract: A process comprises (a) combining (1) at least one base and (2) at least one metal carboxylate salt comprising (i) a metal cation selected from metal cations that form amphoteric metal oxides or oxyhydroxides and (ii) a lactate or thiolactate anion, or metal carboxylate salt precursors comprising (i) at least one metal salt comprising the metal cation and a non-interfering anion and (ii) lactic or thiolactic acid, a lactate or thiolactate salt of a non-interfering, non-metal cation, or a mixture thereof; and (b) allowing the base and the metal carboxylate salt or metal carboxylate salt precursors to react.Type: ApplicationFiled: December 16, 2008Publication date: October 21, 2010Inventor: Timothy D. Dunbar
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Publication number: 20100233072Abstract: According to some embodiments, a pre-poled, single-domain body of a ferroelectric crystalline material such as lithium tantalate or lithium niobate is electrically reduced by applying a voltage across the body in a non-oxidizing environment while the body is heated to a process temperature below its Curie temperature. The voltage generates an electric field along the polar axis of the body. Electrodes may be formed on the body surface by applying an acetate-based silver paint. Exemplary methods allow achieving lithium tantalate electrical conductivity values of 10?11 to 10?9 Siemens/cm and average optical absorption values greater than 50% per 0.4 mm thickness at wavelengths of 300 nm and 460 nm.Type: ApplicationFiled: May 24, 2010Publication date: September 16, 2010Inventors: Ronald O. Miles, Ludwig Galambos
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Publication number: 20100195185Abstract: Method for preparing a purified crystal for use in an optical component, from an impure crystal having impurities or crystal defects capable of causing a specific absorption of incident light, includes heating the impure crystal to a temperature at which ions in the crystal are mobile and provide conductivity. A part of the crystal is illuminated with an electromagnetic purifying beam having a frequency in or near a visible frequency range so as to optically excite and migrate charges in the crystal, the charges being compensated by a counter-migration of the ions so as to be fixed in place thereafter so as to provide a purified crystal zone. The crystal is cooled to a future operating temperature.Type: ApplicationFiled: January 18, 2008Publication date: August 5, 2010Applicant: DEUTSCHE TELEKOM AGInventors: Karsten Buse, Matthias Falk, Daniel Haertle, Michael Koesters
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Patent number: 7759006Abstract: Disclosed is a compound represented by the following formula 1. A lithium secondary battery using the same compound as electrode active material, preferably as cathode active material, is also disclosed. LiMP1-xAxO4??[Formula 1] wherein M is a transition metal, A is an element having an oxidation number of +4 or less and 0<x<1. The electrode active material comprising a compound represented by the formula of LiMP1-xAxO4 shows excellent conductivity and charge/discharge capacity compared to LiMPO4.Type: GrantFiled: July 14, 2005Date of Patent: July 20, 2010Assignee: LG Chem, Ltd.Inventors: Sung Kyun Chang, Jeong Ju Cho
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Patent number: 7754106Abstract: A release agent is flash evaporated and deposited onto a support substrate under conventional vapor-deposition conditions and a conductive metal oxide, such as ITO, is subsequently sputtered or deposited by reactive electron beam onto the resulting release layer in the same process chamber to form a very thin film of conductive material. The resulting multilayer product is separated from the support substrate, crushed to brake up the metal-oxide film into flakes, and heated or mixed in a solvent to separate the soluble release layer from the metallic flakes. Thus, by judiciously controlling the deposition of the ITO on the release layer, transparent flakes may be obtained with the desired optical and physical characteristics.Type: GrantFiled: June 7, 2006Date of Patent: July 13, 2010Assignee: Sigma Laboratories of Arizona, LLCInventors: Michael G. Mikhael, Angelo Yializis
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Patent number: 7754111Abstract: An electrochemical cell comprising a lithium anode and a fluorinated silver vanadium oxide cathode activated with a nonaqueous electrolyte is described. The fluorinated silver vanadium oxide is of the formula Ag4V2O11-xFx, wherein x ranges from about 0.02 to about 0.3.Type: GrantFiled: June 11, 2007Date of Patent: July 13, 2010Assignee: Greatbatch Ltd.Inventors: Jingsi Yang, Esther S. Takeuchi, Randolph Leising
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Publication number: 20100135937Abstract: Nanocrystalline forms of metal oxides, including binary metal oxide, perovskite type metal oxides, and complex metal oxides, including doped metal oxides, are provided. Methods of preparation of the nanocrystals are also provided. The nanocrystals, including uncapped and uncoated metal oxide nanocrystals, can be dispersed in a liquid to provide dispersions that are stable and do not precipitate over a period of time ranging from hours to months. Methods of preparation of the dispersions, and methods of use of the dispersions in forming films, are likewise provided. The films can include an organic, inorganic, or mixed organic/inorganic matrix. The films can be substantially free of all organic materials. The films can be used as coatings, or can be used as dielectric layers in a variety of electronics applications, for example as a dielectric material for an ultracapacitor, which can include a mesoporous material. Or the films can be used as a high-K dielectric in organic field-effect transistors.Type: ApplicationFiled: September 24, 2009Publication date: June 3, 2010Applicant: The Trustees of Columbia University in the City of New YorkInventors: Stephen O'Brien, Limin Huang, Zhuoying Chen, Ioannis Kymissis, Zhang Jia
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Patent number: 7727322Abstract: A method for manufacturing a precursor solution for forming a PZTN compound oxide with Pb, Zr, Ti and Nb as constituent elements by a sol-gel method includes: a step of dissolving at least lead carboxylate with an organic solvent having an alkoxy group, to thereby form a first solution; a step of heat treating the first solution to remove crystallization water of the lead carboxylate and to form lead alkoxide by a ligand replacement reaction between the lead carboxylate and the organic solvent having the alkoxy group, to thereby form a second solution including the lead alkoxide; a step of mixing an alkoxide of a metal selected from at least one of Zr, Ti and Nb excluding Pb with the second solution, to thereby form a third solution including metal alkoxides of Pb, Zr, Ti and Nb, respectively; and a step of adding water to the third solution to cause hydrolysis-condensation of the metal alkoxides, to thereby form a fourth solution including a precursor of PZTN compound oxide.Type: GrantFiled: September 12, 2005Date of Patent: June 1, 2010Assignee: Seiko Epson CorporationInventor: Motohisa Noguchi
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Patent number: 7713511Abstract: A lithium tantalate substrate obtained by working in the state of a substrate a lithium tantalate crystal grown by the Czochralski method is buried in a mixed powder of Al and Al2O3, followed by heat treatment carried out at a temperature kept to from 350 to 600° C., to manufacture a lithium tantalate substrate having volume resistivity which has been controlled within the range of from 1010 to 1013 ?cm. The substrate obtained has a very low pyroelectricity or no pyroelectricity, and it can be made colored and opaque from a colorless and transparent state and also sufficiently has the properties required as a piezoelectric material.Type: GrantFiled: October 7, 2004Date of Patent: May 11, 2010Assignee: Sumitomo Metal Mining Co., Ltd.Inventors: Tomio Kajigaya, Takashi Kakuta
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Patent number: 7713504Abstract: A process to produce mixed metal oxides and metal oxide compounds. The process includes evaporating a feed solution that contains at least two metal salts to form an intermediate. The evaporation is conducted at a temperature above the boiling point of the feed solution but below the temperature where there is significant crystal growth or below the calcination temperature of the intermediate. The intermediate is calcined, optionally in the presence of an oxidizing agent, to form the desired oxides. The calcined material can be milled and dispersed to yield individual particles of controllable size and narrow size distribution.Type: GrantFiled: November 28, 2005Date of Patent: May 11, 2010Assignee: Altair Nanomaterials, Inc.Inventors: Bruce J. Sabacky, Timothy M. Spitler, Jan Prochazka
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Patent number: 7700067Abstract: A crystallographically-oriented ceramic including first regions, in which crystal nuclei remain and which contain a specific element in a predetermined concentration range and extend at least partially in a layered shape along a crystal plane, and second regions, which contain the specific element in a different concentration range from the first regions and extend at least partially in a layered shape along the crystal plane. The regions are alternately repeated, and a compositional distribution exists in a direction orthogonal to the crystal plane. In the first region, the concentration of Na is higher, the concentration of K is lower, the concentration of Nb is lower, and the concentration of Ta is higher than the second region, and in the second region, the concentration of Na is lower, the concentration of K is higher, the concentration of Nb is higher, and the concentration of Ta is lower than the first region.Type: GrantFiled: February 22, 2008Date of Patent: April 20, 2010Assignee: NGK Insulators, Ltd.Inventors: Shohei Yokoyama, Nobuyuki Kobayashi, Tsutomu Nanataki
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Publication number: 20100067087Abstract: Method for treating a nominally pure crystal having non-linear optical properties. The nominally pure crystal contain foreign atoms at a residual concentration of less than 20 ppm so as to provide specific absorption of incident light. The method includes determining, based on testing on a specifically doped reference crystal of same type as the nominally pure crystal, a threshold value. The threshold value is defined by a temperature at which a migration of ions in the nominally pure crystal to the surface of the nominally pure crystal ceases. The foreign atoms are transformed to a higher valance state by a thermally-supported oxidation process including heating the nominally pure crystal at a heating rate that increases by less than 3° C. per minute to a maximum temperature above the threshold value and below a Curie temperature of the nominally pure crystal. An electrical voltage is applied so as to eliminate electrons released during the oxidation process from the nominally pure crystal.Type: ApplicationFiled: March 15, 2007Publication date: March 18, 2010Applicant: Deutsche Telekom AGInventors: Karsten Buse, Matthias Falk, Theo Woike
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Patent number: 7670585Abstract: Provided is a method for preparing an electroconductive mayenite type compound with good properties readily and stably at low cost without need for expensive facilities, a reaction at high temperature and for a long period of time, or complicated control of reaction. A method for preparing an electroconductive mayenite type compound comprises a step of subjecting a precursor to heat treatment, wherein the precursor contains Ca and/or Sr, and Al, a molar ratio of (a total of CaO and SrO:Al2O3) is from (12.6:6.4) to (11.7:7.3) as calculated as oxides, a total content of CaO, SrO and Al2O3 in the precursor is at least 50 mol %, and the precursor is a vitreous or crystalline material; and the method comprises a step of mixing the precursor with a reducing agent and performing the heat treatment of holding the mixture at 600-1,415° C. in an inert gas or vacuum atmosphere with an oxygen partial pressure of at most 10 Pa.Type: GrantFiled: November 30, 2007Date of Patent: March 2, 2010Assignees: Asahi Glass Company, Limited, Tokyo Institute of TechnologyInventors: Hideo Hosono, Katsuro Hayashi, Sung Wng Kim, Masahiro Hirano, Satoru Narushima, Setsuro Ito
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Publication number: 20100044651Abstract: The present invention relates to a process for preparing lithium-rich metal oxides and also the lithium-rich metal oxides which can be obtained by this process. Furthermore, the invention relates to the use of lithium-rich metal oxides for producing a cathode for a battery, in particular a lithium ion battery, and also a cathode for a lithium ion battery which comprises lithium-rich metal oxides.Type: ApplicationFiled: April 14, 2008Publication date: February 25, 2010Applicant: BASF SEInventors: Kirill Bramnik, Hartmut Hibst, Julian Prölss
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Publication number: 20100040531Abstract: 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: October 23, 2009Publication date: February 18, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: PAUL DOUGLAS VERNOOY, ALFRED T. WALKER, KENNETH WARREN HANG
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Patent number: 7662227Abstract: The present invention relates to compounds on apatite basis, having the general formula M5 (A04)3X wherein X is situated in the hexagonal channels of the apatite structure and includes Cu-atoms, processes for the preparation thereof as well as applications of these compounds. The compounds presented herein are particularly useful as pigments.Type: GrantFiled: October 31, 2007Date of Patent: February 16, 2010Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V.Inventors: Pavel E. Kazin, Andrei S. Karpov, Martin Jansen