Iron, Cobalt, Or Nickel Compound Patents (Class 252/521.2)
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Publication number: 20080286898Abstract: A material composition having a core-shell microstructure suitable for manufacturing a varistor having outstanding electrical properties, the core-shell microstructure of the material composition at least comprising a cored-structure made of a conductive or semi-conductive material and a shelled-structure made from a glass material to wrap the cored-structure, and electrical properties of the varistors during low temperature of sintering process can be decided and designated by precisely controlling the size of the grain of the cored-structure and the thickness and insulation resistance of the insulating layer of the shelled-structure of material composition.Type: ApplicationFiled: May 17, 2007Publication date: November 20, 2008Applicant: BEE FUND BIOTECHNOLOGY INC.Inventors: Ching-Hohn Lien, Cheng-Tsung Kuo, Jun Nan Lin, Jie-An Zhu, Li-Yun Zhang, Wei-Cheng Lien
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Publication number: 20080280204Abstract: The invention relates to a method for producing electrically conducting nickel oxide surfaces made of nickel-containing material. According to said method, the nickel surface is first degreased and is then roughened for approximately ten minutes in a solution containing about one percent of hydrochloric acid, said process being accelerated by adding hydrogen peroxide solution, resulting in the electrolyte turning green. The nickel surface is briefly wetted, the nickel material is introduced into a solution of 3.5 molar lye to which about ten percent of hydrogen peroxide is added and is kept therein for ten minutes, and the resulting nickel hydroxide surface is dehydrated in a subsequent thermal process and is then further oxidized to obtain nickel oxide. The invention further relates to a conductive boundary layer that is produced according to said method, the electrodes therefrom, and the use thereof in chlorine-alkali electrolysis processes, in fuel cells and storage batteries.Type: ApplicationFiled: July 9, 2005Publication date: November 13, 2008Applicants: UHDE GMBH, Gaskatel Gessellschaft Fuer Gassysteme Durch Katalyse Und Elektrochemie MBHInventors: Roland Beckmann, Karl-Heinz Dulle, Peter Woltering, Randolf Kiefer, Frank Holthuis, Frank Funck, Wolfram Stolp, Hans-Joachim Kohnke, Joachim Helmke
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Patent number: 7449497Abstract: Monomers (e.g. thinphenes) are caused to polymerise by mixing them with an oxidising agent (and generally a solvent comprising water) and irradiating the mixture with light (visible or UV). Polymer properties can be varied by doping or chemical modification. Uses include sensor elements for assays and electrical components such as electrodes.Type: GrantFiled: March 24, 2003Date of Patent: November 11, 2008Assignee: Cranfield UniversityInventors: Sergey Anatoliyovich Piletsky, Olena Volodimirivna Piletska, Anthony Peter Francis Turner, Khalku Karim, Beining Chen
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Publication number: 20080261077Abstract: A paste composition for an electrode includes a conductive material, a colored glass frit, the glass frit exhibiting a blackness (L*) value of about 85 or less, a binder, and a solvent.Type: ApplicationFiled: April 17, 2008Publication date: October 23, 2008Inventors: Sang Hee Park, Deok Young Choi, Byung Cheol Lee, Hee In Nam, Hyun Don Kim
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Publication number: 20080241690Abstract: The present invention relates to lithium secondary batteries and more specifically to positive electrode materials operating at potentials greater than 2.8 V vs. Li+/Li in nonaqueous electrochemical cells. In particular, the invention relates to crystalline nanometric carbon-free olivine-type LiFePO4 powders with enhanced electrochemical properties. A direct precipitation process is described for preparing crystalline LiFePO4powder, comprising the steps of: providing a water-based mixture having at a pH between 6 and 10, containing a water-miscible boiling point elevation additive, and Li(I), Fe(II) and P(V) as precursor components; heating said water-based mixture to a temperature less than or equal to its boiling point at atmospheric pressure, thereby precipitating crystalline LiFePO4 powder An extremely fine 50 to 200 nm particle size is obtained, with a narrow distribution. The fine particle size accounts for excellent high-drain properties without applying any carbon coating.Type: ApplicationFiled: June 15, 2006Publication date: October 2, 2008Inventors: Charles Delacourt, Philippe Poizot, Christian Masquelier
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Publication number: 20080237549Abstract: A novel phosphor material which can be manufactured without utilizing a fault formation process which is difficult to be controlled. The phosphor material has a eutectic structure formed of a base material that is a semiconductor formed of a Group 2 element and a Group 6 element, a semiconductor formed of a Group 3 element and a Group 5 element, or a ternary phosphor formed of an alkaline earth metal, a Group 3 element, and a Group 6 element, and a solid solution material including a transition metal. The phosphor material is suited for an EL element because of less variation of characteristic since defect formation process in which stress is applied externally to form a defect inside of a phosphor material is not needed.Type: ApplicationFiled: March 24, 2008Publication date: October 2, 2008Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Yasuo NAKAMURA, Takahiro KAWAKAMI, Rie MATSUBARA, Makoto HOSOBA
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Publication number: 20080233456Abstract: Provided are: a metallic material for conductive member, having good corrosion resistance and small contact resistance; a separator for a proton-exchange membrane fuel cell using the metallic material; and a proton-exchange membrane fuel cell using the separator. The metallic material has 0.3 ?m or less of mean spacing of local peaks of the surface roughness profile.Type: ApplicationFiled: March 17, 2005Publication date: September 25, 2008Inventors: Shin Ishikawa, Yasushi Kato, Osamu Furukimi
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Patent number: 7427369Abstract: A composition for applying a coating on a support at low temperature from a dispersion of at least a component of the coating to be deposited in the composition. The composition includes at least a strong and heavy solvent with a boiling point higher than 150° C. approximately, and a weak solvent with a boiling point less than 100° C. approximately. The solvents forming the composition must constitute a mixture that evaporates at a temperature less than 100° C. The composition is particularly useful for forming electrodes or electrolyte in lithium-ion batteries. The method and the device used for forming the coating use a dispersion spreader and an infrared lamp.Type: GrantFiled: March 21, 2007Date of Patent: September 23, 2008Assignee: Hydro-QuebecInventors: Abdelbast Guerfi, Fernand Brochu, Monique Masse, Karim Zaghib
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Publication number: 20080224104Abstract: The invention relates to a method for the preparation of stable suspensions of metal oxide nanoparticles, in which uncharged metal oxide nanoparticles are first treated with a non-ionic surfactant in a polar organic solvent under certain conditions, and the suspension obtained is then treated with a charging solution. The suspensions of the invention can be used for preparation of high quality metal oxide films by electrophoresis deposition (EPD).Type: ApplicationFiled: August 3, 2006Publication date: September 18, 2008Inventors: Arie Zaban, Larissa Grinis, Asher Ofir
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Patent number: 7425284Abstract: The purpose of the invention is a process for making a solid part designed to form all or part of an anode for the production of aluminium by fused bath electrolysis, containing a cermet formed from at least one metallic oxide such as a mixed oxide with spinel structure, and at least one metallic phase, in which a mixed oxide is used containing a metal R in the form of a cation in its chemical structure, the said metal R being fully or partly reducible by a reduction operation during the manufacturing process, so as to form all or part of the said metallic phase. This process can provide a cermet with a uniform distribution of fine metallic particles.Type: GrantFiled: October 5, 2004Date of Patent: September 16, 2008Assignee: Aluminum PechineyInventors: Philippe Tailhades, Abel Rousset, Armand Gabriel, Véronique Laurent, Valérie Baco-Carles, Airy-Pierre Lamaze
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Publication number: 20080203363Abstract: A method for producing a positive electrode active material that realizes a non-aqueous electrolyte secondary cell having high discharge capacity and excellent high temperature preservation characteristic is provided. The method includes: an underwater kneading step of kneading lithium nickel composite oxide (LixNi1-yMyOz, 0.9<x?1.1, 0?y?0.7, 1.9?z?2.1, M including at least one selected from Al, Co, and Mn), lithium iron phosphorus composite oxide (LiFePO4), a conductive carbon source, and water; after the underwater kneading step, a cleaning step of removing the water from the mixture after the underwater kneading step; and after the cleaning step, a baking step of baking the mixture in a reduced atmosphere at 200 to 800° C.Type: ApplicationFiled: February 27, 2008Publication date: August 28, 2008Applicant: SANYO ELECTRIC CO., LTD.Inventors: Shinya MIYAZAKI, Tatsuyuki KUWAHARA
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Publication number: 20080199779Abstract: A composite anode active material including a transition metal; an intermetallic compound which includes the transition metal as one component and is capable of alloy formation with lithium; and carbon, where both the transition metal and the intermetallic compound have crystallinity, and the transition metal exists in a phase structurally separated from the intermetallic compound capable of alloy formation with lithium, where a content of the transition metal elements as both a metal and a component of the intermetallic compound may be less than 45 wt % based on the total weight of the transition metal and the intermetallic compound capable of alloy formation with lithium. The composite anode active material is a composite anode active material having a new structure, and includes a crystalline intermetallic compound, a crystalline transition metal, and carbon. In addition, an anode and lithium battery prepared using the composite anode active material have excellent charge-discharge characteristics.Type: ApplicationFiled: January 30, 2008Publication date: August 21, 2008Inventors: Han-su Kim, Dong-min Im, Young-su Chung
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Publication number: 20080199772Abstract: The present invention relates to primary and secondary electrochemical energy storage systems. More particularly, the present invention relates to such systems as battery cells, especially battery cells utilizing metal fluorides with the presence of phosphates or fluorophosphates, which use materials that take up and release ions as a means of storing and supplying electrical energy.Type: ApplicationFiled: February 4, 2008Publication date: August 21, 2008Inventors: Glenn Amatucci, Fadwa Badway
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Patent number: 7413687Abstract: A device for conducting protons at a temperature below 550° C. includes a LAMOX ceramic body characterized by an alpha crystalline structure.Type: GrantFiled: June 24, 2005Date of Patent: August 19, 2008Assignee: UT - Battelle, LLCInventors: Timothy R. Armstrong, Edward A. Payzant, Scott A. Speakman, Martha Greenblatt
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Positive electrode active material and non-aqueous electrolyte secondary battery containing the same
Publication number: 20080193844Abstract: The present invention provides a high-capacity and low-cost non-aqueous electrolyte secondary battery, comprising: a negative electrode containing, as a negative electrode active material, a substance capable of absorbing/desorbing lithium ions and/or metal lithium; a separator; a positive electrode; and an electrolyte, wherein the positive electrode active material contained in the positive electrode is composed of crystalline particles of an oxide containing two kinds of transition metal elements, the crystalline particles having a layered crystal structure, and oxygen atoms constituting the oxide forming a cubic closest packing structure.Type: ApplicationFiled: January 14, 2008Publication date: August 14, 2008Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., OSAKA CITY UNIVERSITYInventors: Tsutomu Ohzuku, Hiroshi Yoshizawa, Masatoshi Nagayama -
Publication number: 20080187651Abstract: Conductive ink formulations comprising a conductive polymer, metallic nanoparticles and a carrier are described. The formulations are printable on a surface, and annealed to form source and drain electrodes.Type: ApplicationFiled: October 24, 2006Publication date: August 7, 2008Inventors: Tzu-Chen Lee, Brian K. Nelson, Christopher P. Gerlach, Dennis E. Vogel
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Publication number: 20080160410Abstract: Disclosed herein are double-layer cathode active materials comprising a nickel-based cathode active material as an inner layer material and a transition metal mixture-based cathode active material as an outer layer material facing an electrolyte. Since the nickel-based cathode active material as an inner layer material has high-capacity characteristics and the transition metal mixture-based cathode active material as an outer layer material facing an electrolyte has superior thermal safety, the double-layer cathode active materials have high capacity, high charge density, improved cycle characteristics and superior thermal safety.Type: ApplicationFiled: April 26, 2005Publication date: July 3, 2008Applicant: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)Inventors: Yang Kook Sun, Myung Hoon Kim, Shin Ho Suk
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Patent number: 7393476Abstract: A positive active material for lithium secondary batteries, includes a composite oxide including an oxide which is represented by the composite formula LixMnaNibCocO2 and has an ?-NaFeO2 structure, and an impurity phase including Li2MnO3. The values a, b, and c are within such a range that in a ternary phase diagram showing the relationship among these, (a, b, c) is present on the perimeter of or inside the quadrilateral ABCD defined by point A (0.5, 0.5, 0), point B (0.55, 0.45, 0), point C (0.55, 0.15, 0.30), and point D (0.15, 0.15, 0.7) as vertexes, and 0.95<x/(a+b+c)<1.35.Type: GrantFiled: November 12, 2002Date of Patent: July 1, 2008Assignee: GS Yuasa CorporationInventors: Ryuji Shiozaki, Akihiro Fujii, Kazuya Okabe, Toshiyuki Nukuda
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Patent number: 7384578Abstract: Disclosed is a modified electroconductive polymer material, which comprises a metal filled in a space between the chains of an electroconductive polymer. The metal is oxidized (partially formed as a hydroxide) through a chemical reaction between three substances consisting of the metal, a cation radical/dication, and absorbed water. The metal has a work function less than that of the electroconductive polymer. The contact between the metal and the electroconductive polymer is kept in the state of coexistence between three substances consisting of the metal, the cation radical/dication and the absorbed water. This allows an electroconductive polymer material to have enhanced durability against oxidation/reduction, and controlled conductivity.Type: GrantFiled: September 3, 2003Date of Patent: June 10, 2008Assignee: Chisso CorporationInventors: Katsuyoshi Hoshino, Hiroyuki Watanabe
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Patent number: 7381497Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery, comprising a lithium-containing composite oxide, wherein the composite oxide is represented by the general formula: LizCo1-x-yMgxMyO2, the element M included in the general formula is at least one selected from the group consisting of Al, Ti, Sr, Mn, Ni and Ca, the values x, y and z included in the general formula satisfy: (i) 0?z?1.03; (ii) 0.005?x?0.1; and (iii) 0.001?y?0.03, the composite oxide has a crystal structure attributed to a hexagonal system in an overcharged state having a potential over 4.25 V relative to metallic Li, and a maximum value of an oxygen generation peak in a gas chromatograph mass spectrometry measurement of the composite oxide in the overcharged state is in the range of 330 to 370° C.Type: GrantFiled: January 7, 2004Date of Patent: June 3, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masatoshi Nagayama, Hiroshi Yoshizawa
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Publication number: 20080121850Abstract: A plasma display panel includes a bus electrode that is fabricated using a bus electrode forming composition that includes a black pigment, a conductive material, an organic binder, a photopolymerization initiator, and a cross-linking agent. The black pigment is present in an amount of 25 to 50 parts by weight based on 100 parts by weight of a conductive material.Type: ApplicationFiled: November 19, 2007Publication date: May 29, 2008Applicant: Samsung SDI Co., Ltd.Inventors: JUNG-KEUN AHN, Chul-Hong Kim
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Publication number: 20080116423Abstract: Provided herein are electroactive agglomerated particles, which comprise nanoparticles of a first electroactive material and nanoparticles of a second electroactive materials, and processes of preparation thereof.Type: ApplicationFiled: October 16, 2007Publication date: May 22, 2008Inventors: Jiang Fan, Robert M. Spotnitz
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Patent number: 7368069Abstract: In a PTC thermistor comprising at least a pair of electrodes disposed so as to face each other and a thermistor element disposed between the electrodes and having a positive resistance-temperature characteristic, the thermistor element is a molded body constituted by a high molecular matrix, a low molecular organic compound, and conductive particles having electric conductivity, the molecular weight of the high molecular matrix is between 10,000 and 400,000, the molecular weight of the low molecular organic compound is between 100 and 3,000, and the high molecular matrix is an olefin-type high molecular compound having a melting start temperature of between 85 and 95° C.Type: GrantFiled: February 7, 2003Date of Patent: May 6, 2008Assignee: TDK CorporationInventors: Hisanao Tosaka, Yasuhide Yamashita
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Patent number: 7364793Abstract: The present invention provides a powdered lithium transition metal oxide useful as a major component for cathode active material of rechargeable lithium batteries, comprising a lithium transition metal oxide particle, a doped interface layer formed near the surface of the particle, and a thermodynamically and mechanically stable outer layer, and a method of preparing the same.Type: GrantFiled: September 24, 2004Date of Patent: April 29, 2008Assignee: LG Chem, Ltd.Inventors: Jens M. Paulsen, Munju Kim, Joon Sung Bae, Jaeup Jang, Hong-Kyu Park
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Publication number: 20080081157Abstract: An electronic device and the production thereof is disclosed. One embodiment includes an integrated component having a layer containing a nickel-palladium alloy.Type: ApplicationFiled: August 7, 2007Publication date: April 3, 2008Applicant: INFINEON TECHNOLOGIES AGInventors: Manfred Schneegans, Holger Torwesten
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Publication number: 20080020284Abstract: The present invention relates to polymeric binders of formula: [(—CH2CF2—)x?(—CF2CF2—)y?[—CH2CH(R)—]z?]m wherein: x?+y?+z?=1, only one x?, y? or z? could be simultaneously equal to zero; R is an alkyl radical CnH2n+1— with 0?n?8, 10?m?106.Type: ApplicationFiled: April 30, 2004Publication date: January 24, 2008Applicants: UNIVERSITE DE MONTREAL, CENTRE NATIONAL DE LA RECHERCE SCIENTIFIQUEInventors: Christophe Michot, Gerald Perron, Junzo Ukai, Wen Li, Keiichi Kohama, Yutaka Oyama, Shoji Yokoishi
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Patent number: 7316865Abstract: A process of manufacturing a positive active material for a lithium secondary battery includes preparing a coating-element-containing organic suspension by adding a coating-element source to an organic solvent, adding water to the suspension to prepare a coating liquid, coating a positive active material with the coating liquid, and drying the coated positive active material.Type: GrantFiled: October 15, 2002Date of Patent: January 8, 2008Assignee: Samsung SDI Co., Ltd.Inventors: Ho-Jin Kweon, Jun-Won Suh
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Patent number: 7309546Abstract: Disclosed is a positive active material for a rechargeable lithium battery, including a lithiated intercalation compound and an additive compound. The additive compound comprises one or more intercalation element-included oxides which have a charging voltage of 4.0 to 4.6V when 5-50% of total intercalation elements of the one or more intercalation element-included oxides are released during charging.Type: GrantFiled: October 3, 2002Date of Patent: December 18, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Ho-Jin Kweon, Jun-Won Suh, Kyung-Ho Kim, Hee-Young Sun
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Publication number: 20070246691Abstract: An electrolyte for anodizing magnesium products, includes a base solution, a main blackening agent, an auxiliary blackening agent, and a complexing agent. The base solution includes 2 to 25 g/l of alkali, 1 to 30 g/l of fluoride, and 1 to 35 g/l of silicate. The main blackening agent mainly includes cupric salt, concentration of the cupric salt is from 0.3 to 9 grams per liter (g/l). The auxiliary blackening agent mainly includes oxysalt, concentration of the oxysalt is from 0.1 to 8 g/l. Concentration of the complexing agent is from 0.5 to 20 g/l.Type: ApplicationFiled: February 2, 2007Publication date: October 25, 2007Inventors: Zhong-Wu Luo, Jun Lin, Lin Jian, Tie-Qiang Peng
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Patent number: 7258821Abstract: Positive electrode-active materials for use in lithium-ion and lithium-ion polymer batteries contain quaternary composite oxides of manganese, nickel, cobalt and aluminum where one of the four is present at levels of over 70 mol percent. The composite oxides can be lithiated to form positive electrode-active materials that are stable over at least ten charge/discharge cycles at voltage levels over 4.8 volts, and have capacities of over 200 mAh/g. Methods for producing the materials and electrochemical cells and batteries that include the materials are also provided.Type: GrantFiled: June 6, 2003Date of Patent: August 21, 2007Assignee: Agere Systems, Inc.Inventors: Kaiyuan Yang, Kevin P. McGrath, Naveen Agarwal, Jaeho Kim
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Publication number: 20070163635Abstract: The semiconductor of the present invention has iron sulfide and a forbidden band control element contained in the iron sulfide. The forbidden band control element has a property capable of controlling the forbidden band of iron sulfide on the basis of the number density of the forbidden band control element in the iron sulfide. An n-type semiconductor is manufactured by incorporating a group IIIb element into iron sulfide. Moreover, a p-type semiconductor is manufactured by incorporating a group Ia element into iron sulfide. A semiconductor junction device or a photoelectric converter is manufactured by using the n-type semiconductor and the p-type semiconductor.Type: ApplicationFiled: January 9, 2007Publication date: July 19, 2007Applicant: Sharp Kabushiki KaishaInventors: Yoshiyuki Nasuno, Noriyoshi Kohama, Kazuhito Nishimura
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Patent number: 7235193Abstract: This invention relates to complex lithium metal oxides, which are cathode active materials of a lithium or lithium ion secondary battery with enhanced cycle life and safety, and a process for preparation thereof. The core particles are complex lithium metal oxides capable of absorbing, storing and emitting lithium ions, and a coating layer comprised of amorphous complex lithium cobalt oxides that are formed on the surface of the core particle, which is structurally stable and inactive with electrolytes. Because the amorphous complex lithium cobalt oxides are inactive with electrolytes, the oxides stabilize the surface structure of the complex lithium metal oxide and improve on high temperature storage properties, as well as safety and cycle life.Type: GrantFiled: April 22, 2003Date of Patent: June 26, 2007Assignee: LG Chem. Ltd.Inventors: Hong-Kyu Park, Yong Hoon Kwon, Seong Yong Park, Jin On Kim, Ki Young Lee
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Patent number: 7223358Abstract: It is a composite-type mixed oxygen ion and electronic conductor, in which an oxygen ion conductive phase consists of gadolinium-doped cerium oxide (GDC), an electronic conductive phase consists of spinel-type ferrite (CFO), the particle diameters of both phases are 1 ?m or less, respectively, both phases are uniformly mixed mutually, and both phases form respective conductive networks. Both phases have low solid solubility mutually, chemical reactions are not easily caused between both phases, and even if chemical reactions are caused between both phases, different phase to disturb mixed conductivity is not formed. And it has high oxygen permeability, and does not easily cause aged deterioration.Type: GrantFiled: April 8, 2003Date of Patent: May 29, 2007Assignee: Japan Science and Technology AgencyInventors: Hitoshi Takamura, Masuo Okada
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Patent number: 7220370Abstract: A method of producing a fine metal component where a plated coating is deposited on a conductive film exposed at fine through-hole pattern portions in a mold to produce a fine metal component, wherein the conductive film is made using a conductive paste comprised of a metal powder in which the metal particles are magnetically linked together in a chain shape.Type: GrantFiled: August 21, 2002Date of Patent: May 22, 2007Assignee: Sumitomo Electric Industries, Ltd.Inventors: Jun Yorita, Shinji Inazawa, Masatoshi Majima, Hideki Kashihara, Toshihiro Sakamoto, Hideaki Toshioka
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Patent number: 7192539Abstract: The present invention relates to cobalt oxide particles useful as a precursor of a cathode active material for a non-aqueous electrolyte secondary cell which is capable of showing a stable crystal structure by insertion reaction therein, and producing a non-aqueous electrolyte secondary cell having a high safety and especially a high heat stability, a process for producing the cobalt oxide particles, a cathode active material for a non-aqueous electrolyte secondary cell using the cobalt oxide particles, a process for producing the cathode active material, and a non-aqueous electrolyte secondary cell using the cathode active material.Type: GrantFiled: February 23, 2006Date of Patent: March 20, 2007Assignee: Toda Kogyo CorporationInventors: Hideaki Maeda, Shoichi Fujino, Hiroyasu Watanabe, Norimiki Sugiyama, Hideaki Sadamura
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Patent number: 7122254Abstract: An electrode comprises an inorganic composite layer of a mixture of at least one insulating inorganic material and at least one at least partially conducting inorganic material. In an application of such an electrode, an organic electroluminescent device comprises a first and second conductor layers. An organic layer is disposed between the first and second conductor layers. The aforementioned composite layer is disposed between the organic layer and the first conductor layer. Methods of fabricating such an electrode and such a device are also described.Type: GrantFiled: October 3, 2001Date of Patent: October 17, 2006Assignee: International Business Machines CorporationInventors: Tilman A. Beierlein, Jean Fompeyrine, Eliav Haskal, Heike Riel, Walter Riess
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Patent number: 7112291Abstract: The present invention relates to cobalt oxide particles useful as a precursor of a cathode active material for a non-aqueous electrolyte secondary cell which is capable of showing a stable crystal structure by insertion reaction therein, and producing a non-aqueous electrolyte secondary cell having a high safety and especially a high heat stability, a process for producing the cobalt oxide particles, a cathode active material for a non-aqueous electrolyte secondary cell using the cobalt oxide particles, a process for producing the cathode active material, and a non-aqueous electrolyte secondary cell using the cathode active material.Type: GrantFiled: March 2, 2005Date of Patent: September 26, 2006Assignee: Toda Kogyo CorporationInventors: Hideaki Maeda, Shoichi Fujino, Hiroyasu Watanabe, Norimiki Sugiyama, Hideaki Sadamura
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Patent number: 7063908Abstract: A complex oxide and an oxide-ion conductor made of the complex oxide are provided. The complex oxide has a basic composition of (Sm1-xAx)(Al1-yBy)O3, wherein “A” represents at least one element selected from the group consisting of barium, strontium and calcium, “B” represents an element selected from the group consisting of magnesium, iron and cobalt, x is a value in a range of 0.10 to 0.30, and y is a value in a range of 0 to 0.30.Type: GrantFiled: September 26, 2002Date of Patent: June 20, 2006Assignee: NGK Insulators, Ltd.Inventors: Yoshihiko Yamamura, Kazuyuki Kaigawa, Shinji Kawasaki, Hiroaki Sakai
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Patent number: 7056453Abstract: The thermistor portion of a thermistor device consists of a mixed sintered body of aY(Cr0.5Mn0.5)O3.bAl2O3 made of the perovskite-type compound Y(Cr0.5Mn0.5)O3 and Al2O3, or a mixed sintered body of aY(Cr0.5Mn0.5)O3.b(Al2O3+Y2O3) made of Y(Cr0.5Mn0.5)O3, Al2O3 and Y2O3. The mole fractions a and b have the relationships 0.05?a<1.0, 0<b?0.95 and a+b=1. This is required to obtain a thermistor device that has stable characteristics and exhibits a small change in its resistance value, even in a heat history from room temperature to 1000° C. or the like, and also has a resistance value of 50? to 100 k? in the temperature range from room temperature to 1000° C. The precursor compounds triethoxy yttrium, diethoxy manganese and tris (2,4-pentadiono) chromium are mixed in a mixed solvent of ethanol and isopropyl alcohol, and refluxing is performed to obtain a composite metal alkoxide solution.Type: GrantFiled: August 20, 2001Date of Patent: June 6, 2006Assignees: Denso Corporation, Nippon Soken, Inc.Inventors: Itsuhei Ogata, Masanori Yamada, Eturo Yasuda, Kaoru Kuzuoka
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Patent number: 7049031Abstract: A positive electrode for a non-aqueous lithium cell comprising a LiMn2?xMxO4 spinel structure in which M is one or more metal cations with an atomic number less than 52, such that the average oxidation state of the manganese ions is equal to or greater than 3.5, and in which 0?x?0.15, having one or more lithium spine oxide LiM?2O4 or lithiated spinel oxide Li1+yM?2O4 compounds on the surface thereof in which M? are cobalt cations and in which 0?y?1.Type: GrantFiled: January 28, 2003Date of Patent: May 23, 2006Assignee: The University of ChicagoInventors: Christopher S. Johnson, Michael M. Thackeray, Arthur J. Kahaian
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Patent number: 7041239Abstract: Electrode active materials comprising two or more groups of particles having differing chemical compositions, wherein each group of particles comprises a material selected from: (a) materials of the formula A1aM1b(XY4)cZd; and (b) materials of the formula A2eM2fOg; and wherein (i) A1, A2, and A3 are Li, Na, or K; (ii) M1 and M3 comprise a transition metal; (iv) XY4 a phosphate or similar moiety; and (v) Z is OH, or halogen. In a preferred embodiment, A2eM3fOg is A3hMniO4 having an inner and an outer region, wherein the inner region comprises a cubic spinel manganese oxide, and the outer region comprises a manganese oxide enriched in Mn+4 relative to the inner region. In a preferred embodiment, the compositions also comprise a basic compound.Type: GrantFiled: April 3, 2003Date of Patent: May 9, 2006Assignee: Valence Technology, Inc.Inventors: Jeremy Barker, M. Yazid Saidi, Tracy E. Kelley
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Patent number: 7033469Abstract: Ceramic inert anodes useful for the electrolytic production of aluminum are disclosed. The inert anodes comprise oxides of Ni, Fe and Al. The Ni—Fe—Al oxide inert anode materials have sufficient electrical conductivity at operation temperatures of aluminum production cells, and also possess good mechanical stability. The Ni—Fe—Al oxide inert anodes may be used to produce commercial purity aluminum.Type: GrantFiled: November 8, 2002Date of Patent: April 25, 2006Assignee: Alcoa Inc.Inventors: Douglas A. Weirauch, Jr., Joseph M. Dynys, Robert A. DiMilia, Siba P. Ray, Xinghua Liu, Frankie E. Phelps
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Patent number: 7018566Abstract: The invention concerns novel compounds derived from La2Mo2O9 and their use as ion conductors.Type: GrantFiled: April 5, 2001Date of Patent: March 28, 2006Assignee: Centre National de la Recherche ScientifiqueInventors: François Goutenoire, Philippe Lacorre
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Patent number: 6998071Abstract: The present invention relates to cobalt oxide particles useful as a precursor of a cathode active material for a non-aqueous electrolyte secondary cell which is capable of showing a stable crystal structure by insertion reaction therein, and producing a non-aqueous electrolyte secondary cell having a high safety and especially a high heat stability, a process for producing the cobalt oxide particles, a cathode active material for a non-aqueous electrolyte secondary cell using the cobalt oxide particles, a process for producing the cathode active material, and a non-aqueous electrolyte secondary cell using the cathode active material.Type: GrantFiled: August 2, 2002Date of Patent: February 14, 2006Assignee: Toda Kogyo CorporationInventors: Hideaki Maeda, Shoichi Fujino, Hiroyasu Watanabe, Norimiki Sugiyama, Hideaki Sadamura
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Patent number: 6991752Abstract: There is provided a positive electrode active material for a non-aqueous electrolyte secondary battery, comprising a composite oxide represented by the general formula (1): (Li1-xMx)a(Co1-yMy)bOc where lithium and cobalt are partly replaced with element M in the crystal structure of LiCoOc, wherein element M is at least one selected from the group consisting of Al, Cu, Zn, Mg, Ca, Ba and Sr, and 0.02?x+y?0.15, 0.90?a/b?1.10, and 1.8?c?2.2 are satisfied.Type: GrantFiled: December 3, 2001Date of Patent: January 31, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masatoshi Nagayama, Hiroshi Yoshizawa, Shinji Arimoto
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Patent number: 6932922Abstract: The present invention includes lithium cobalt oxides having hexagonal layered crystal structures and methods of making same. The lithium cobalt oxides of the invention have the formula LiwCo1?xAxO2+y wherein 0.96?w?1.05, 0?x?0.05, ?0.02?y?0.02 and A is one or more dopants. The lithium cobalt oxides of the invention preferably have a position within the principal component space defined by the relationship axi+byi?c, wherein xi={right arrow over (S)}i•{right arrow over (P)}c1; yi={right arrow over (S)}i•{right arrow over (P)}c2; the vector {right arrow over (S)}i is the x-ray spectrum for the LiwCo1?xAxO2+y compound; the vectors {right arrow over (P)}c1 and {right arrow over (P)}c2 defining the principal component space are determined by measuring the x-ray powder diffraction values {right arrow over (S)}i between 15° and 120° using a 0.Type: GrantFiled: April 25, 2003Date of Patent: August 23, 2005Assignee: FMC CorporationInventors: Yuan Gao, Marina Yakovleva, John L. Burba, III, John F. Engel
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Patent number: 6916580Abstract: A positive active material for a rechargeable lithium battery is provided. The positive active material comprises a lithiated intercalation compound and a coating layer formed on the lithiated intercalation compound. The coating layer comprises a solid-solution compound and an oxide compound having at least two coating elements, the oxide compound represented by the following Formula 1: MpM?qOr??(1) wherein M and M? are not the same and are each independently at least one element selected from the group consisting of Zr, Al, Na, K, Mg, Ca, Sr, Ni, Co, Ti, Sn, Mn, Cr, Fe, and V; 0<p<1; 0<q<1; and 1<r?2, where r is determined based upon p and q. The solid-solution compound is prepared by reacting the lithiated intercalation compound with the oxide compound. The coating layer has a fracture toughness of at least 3.5 MPam1/2. A method of making the positive active material is also provided.Type: GrantFiled: October 15, 2002Date of Patent: July 12, 2005Assignee: Samsung SDE Co., Ltd.Inventors: Jae-Phil Cho, Byung-Woo Park, Yong-Jeong Kim, Tae-Jun Kim
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Patent number: 6908707Abstract: The present invention provides a nickel-zinc battery of an inside-out structure, that is, a battery comprising a positive electrode containing beta-type nickel oxyhydroxide and a negative electrode containing zinc and having a similar structure to an alkali manganese battery, in which the beta-type nickel oxyhydroxide consists of substantially spherical particles, mean particle size of which is within a range from 19 ?m to a maximum of 40 ?m, the bulk density of which is within a range from 1.6 g/cm3 to a maximum of 2.2 g/cm3, tap density of which is within a range from 2.2 g/cm3 to a maximum of 2.7 g/cm3, specific surface area which based on BET method is within a range from 3 m2/g to a maximum of 50 m2/g, and the positive electrode of the nickel zinc battery contains graphite powder, where the weight ratio of graphite powder against a total weight of the positive electrode is defined within a range from 4% to a maximum of 8%.Type: GrantFiled: June 9, 2003Date of Patent: June 21, 2005Assignee: Sony CorporationInventors: Kenta Yamamoto, Osamu Takahashi, Kazuo Honda, Kuniyasu Oya
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Patent number: 6893776Abstract: A positive active material for a non-aqueous electrolyte secondary battery includes a lithium-nickel composite oxide represented by the compositional formula LiaNi1?b?cCObMncO2 (a?1.09, 0.05?b?0.35, 0.15?c?0.35, and 0.25?b+c?0.55). By X-ray diffractometry with a CuK? ray, the lithium-nickel composite oxide exhibits an intensity ratio R ((I012+I006)/I101) of not greater than 0.50, wherein R is the ratio of the sum of the diffraction peak intensity I012 on the 012 plane and the diffraction peak intensity I006 on the 006 plane to the diffraction peak intensity I101 on the 101 plane. The crystallinity of the positive active material of the compositional formula LiaNi1?b?cCobMncO2 can be kept high and it is possible to secure good capacity density and cycle life performance.Type: GrantFiled: November 8, 2001Date of Patent: May 17, 2005Assignee: Japan Storage Battery Co., Ltd.Inventors: Yoshinori Naruoka, Junichi Toriyama, Masanao Terasaki
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Patent number: 6849208Abstract: The invention relates to a nickel mixed hydroxide with Ni as the main element and with a layer structure, comprising at least one element Ma from the group comprising Fe, Cr, Co, Ti, Zr and Cu which is present in two different oxidation states which differ by one electron in terms of the number of outer electrons; at least one element Mb from the group comprising B, Al, Ga, In and RE (rare earth metals) present in the trivalent oxidation state; optionally at least one element Mc from the group comprising Mg, Ca, Sr, Ba and Zn present in the divalent oxidation state; apart from the hydroxide, at least one additional anion from the group comprising halides, carbonate, sulfate, oxalate, acetate, borate and phosphate in a quantity sufficient to preserve the electroneutrality of the mixed hydroxide; and water of hydration in a quantity which stabilizes the relevant structure of the mixed hydroxide.Type: GrantFiled: December 14, 1999Date of Patent: February 1, 2005Assignee: H. C. Starck GmbHInventors: Viktor Stoller, Armin Olbrich, Juliane Meese-Marktscheffel, Margret Wohlfahrt-Mehrens, Peter Axmann, Herbert Dittrich, Sandra Ströbele