Having Utility As A Reactive Material In An Electrochemical Cell; E.g., Battery, Etc. Patents (Class 252/182.1)
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Patent number: 8894888Abstract: A conductive paste composition contains a source of an electrically conductive metal, a fusible material, a synthetic clay additive, and an optional etchant additive, dispersed in an organic medium. An article such as a photovoltaic cell is formed by a process having the steps of deposition of the paste composition on a semiconductor substrate by a process such as screen printing and firing the paste to remove the organic medium and sinter the metal and fusible material. The synthetic clay additive aids in establishing a low resistance electrical contact between the front side metallization and underlying semiconductor substrate during firing.Type: GrantFiled: December 21, 2011Date of Patent: November 25, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Steven Dale Ittel, John Graeme Pepin
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Patent number: 8895185Abstract: A binder resin precursor solution composition for electrode containing at least (A) a polyamic acid having repeating units represented by chemical formulae (1) and (2) in a (1) to (2) molar ratio of 2:8 to 8.5:1.5 and having a tetracarboxylic acid component to diamine component molar ratio of 0.94 to 0.99, (B) a carboxylic acid compound having two pairs of carboxyl groups in the molecule thereof or an ester thereof, and (C) a solvent.Type: GrantFiled: March 31, 2010Date of Patent: November 25, 2014Assignee: Ube Industries, Ltd.Inventors: Tetsuji Hirano, Toru Kidosaki
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Publication number: 20140339464Abstract: The present invention discloses a method for modification of a lithium ion battery positive electrode material. The method comprises the following steps: (1) mixing organic acid and alcohol to obtain an organic solution; (2) adding positive electrode material into the organic solution to obtain a suspension; (3) washing with alcohol solvent after centrifugal separation; (4) drying treatment; the positive electrode material is a nickel-based metal oxide positive electrode material LiNixM1?xO2, wherein 0.5?x<1 and M is one or two selected from the group consisting of Co, Mn, Al, Cr, Mg, Cu, Ti, Mg, Zn, Zr and V.Type: ApplicationFiled: May 19, 2014Publication date: November 20, 2014Applicant: SHENZHEN BTR NEW ENERGY MATERIALS INC.Inventors: Min Yue, Shunyi Yang, Youyuan Huang, Jianguo REN, Lin Cheng
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Publication number: 20140339466Abstract: There is provided a cathode active material for a lithium ion battery having good battery properties. The cathode active material for a lithium ion battery is a cathode active material for a lithium ion battery represented by a composition formula: LixNi1-yMyO2+? wherein 0.9?x?1.2; 0<y?0.7; and ?0.1???0.1; and M is a metal(s), wherein a maximum value of the generation rate in a peak originated from H2O in the region is 200 to 400° C. of 5 ppm by weight/sec or lower in a measurement by TPD-MS of 5 to 30 mg of the cathode active material.Type: ApplicationFiled: May 29, 2013Publication date: November 20, 2014Inventor: Kentaro Okamoto
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Publication number: 20140339465Abstract: There is provided a cathode active material for a lithium ion battery having good battery properties. The cathode active material for a lithium ion battery is represented by a composition formula: Li(LixNi1-x-yMy)O2+? wherein M is one or more selected from Sc, Ti, V, Cr, Mn, Fe, Co, Cu, Zn, Ga, Ge, Al, Bi, Sn, Mg, Ca, B, and Zr; 0?x?0.1; 0<y?0.7; and ?>0, and has a moisture content measured by Karl Fischer titration at 300° C. of 1100 ppm or lower.Type: ApplicationFiled: September 21, 2012Publication date: November 20, 2014Inventor: Kentaro Okamoto
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Publication number: 20140342222Abstract: The Si-block copolymer core-shell nanoparticles include: a Si core; and a block copolymer shell including a block having relatively relatively high affinity for Si and a block having relatively low affinity for Si and forming a spherical micelle structure around the Si core. Since the Si-block copolymer core-shell nanoparticles exhibit excellent dispersibility and stability in a mixed solution including the same, the Si-block copolymer core-shell nanoparticles are easily applied to an anode active material for lithium secondary battery by carbonization thereof.Type: ApplicationFiled: April 28, 2014Publication date: November 20, 2014Applicant: OCI COMPANY LTD.Inventors: Yo-Seop KIM, Eun-Hye JEONG, Sung-Ho JUNG, Hyung-Rak KIM
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Publication number: 20140342226Abstract: An electrode for a lithium ion secondary battery includes an electrode active material and a water-soluble polymer. The water-soluble polymer is a copolymer containing 1% by weight to 30% by weight of an aromatic vinyl monomer unit, 20% by weight to 60% by weight of an unsaturated carboxylic acid monomer unit, and 0.1% by weight to 5% by weight of a crosslinkable monomer unit.Type: ApplicationFiled: November 27, 2012Publication date: November 20, 2014Inventor: Tomokazu Sasaki
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Patent number: 8889297Abstract: The present disclosure relates to a nanocomposite cathode active material for a lithium secondary battery, a method for preparing same, and a lithium secondary battery including same. More particularly, the present disclosure relates to a nanocomposite cathode active material for a lithium secondary battery including: a core including LiMn2O4; and LiMn(PO3)3 distributed on the surface of the core. In accordance with the present disclosure, the time and cost for manufacturing a lithium secondary battery can be reduced and the manufactured lithium secondary battery has superior electrochemical properties.Type: GrantFiled: January 10, 2013Date of Patent: November 18, 2014Assignee: Korea Institute of Science and TechnologyInventors: Kyung Yoon Chung, Dieky Susanto, Won Young Chang, Byung Won Cho
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Patent number: 8889296Abstract: The hydration of cadmium oxide in the presence of nickel acetate gives the possibility of obtaining a compound of general formula Cd1-xNix(OH)2-y(CH3CO2)y with 0<x?0.05 and 0<y?0.10. This compound may be advantageously, used as an electrochemically active material of an anode of the envelope type of a nickel cadmium generator. This anode does not contain any sulfates responsible for the formation of short-circuits. Further, this anode has a high electrochemical yield. A method for preparing this compound and the anode is described.Type: GrantFiled: December 23, 2009Date of Patent: November 18, 2014Assignee: Saft Groupe SAInventors: Stéphanie Chevalier, Claudette Audry, Mélanie Dendary, Philippe Desprez, Björn Marlid, Rune Sjövall, Jerry Gottfridsson
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Publication number: 20140335419Abstract: Provided is positive electrode material for a highly safe lithium-ion secondary battery that can charge and discharge a large current while having long service life. Disclosed are composite particles comprising: at least one carbon material selected from the group consisting of (i) fibrous carbon material, (ii) chain-like carbon material, and (iii) carbon material produced by linking together fibrous carbon material and chain-like carbon material; and lithium-containing phosphate, wherein at least one fine pore originating from the at least one carbon material opens to outside the composite particle. Preferably, the composite particles are coated with carbon. The fibrous carbon material is preferably a carbon nanotube with an average fiber size of 5 to 200 nm. The chain-like carbon material is preferably carbon black produced by linking, like a chain, primary particles with an average particle size of 10 to 100 nm.Type: ApplicationFiled: November 14, 2012Publication date: November 13, 2014Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHAInventors: Takashi Kawasaki, Nobuyuki Yoshino, Hiroshi Murata, Takehiko Sawai, Shinji Saito, Kazunori Urao
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Publication number: 20140335410Abstract: Disclosed are a composite electrode material for a rechargeable battery; a method of making a composite electrode material; an electrode including the composite electrode material; cells including such electrodes; and devices including the cells. A composite electrode material for a rechargeable battery cell includes an electroactive material; and a polymeric binder including pendant carboxyl groups. The electroactive material includes one or more components selected from the group including an electroactive metal, an electroactive semi-metal, an electroactive ceramic material, an electroactive metalloid, an electroactive semi-conductor, an electroactive alloy of a metal, an electroactive alloy of a semi-metal and an electroactive compound of a metal or a semi-metal. The polymeric binder has a molecular weight in the range 300,000 to 3,000,000. 40 to 90% of the carboxyl groups of the binder are in the form of a metal ion carboxylate salt.Type: ApplicationFiled: October 26, 2012Publication date: November 13, 2014Applicant: NEXEON LIMITEDInventors: Melanie J. Loveridge, Michael Jonathan Lain, Fazil Coowar, Mamdouh Elsayad Abdelsalam
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Publication number: 20140335420Abstract: There is provided a negative-electrode material for rechargeable batteries with a nonaqueous electrolyte which have a high charge/discharge capacity and excellent rate characteristics. The negative-electrode material for rechargeable batteries with a nonaqueous electrolyte comprises: carbon material having a carbon atom content of not less than 98.0% in terms of mass and a lattice spacing (d002) of not more than 3.370 angstroms in the C-axis direction; and a boron compound represented by general formula HxBOy wherein x represents a real number of 0 to 1.0; and y represents a real number of 1.5 to 3.0, wherein the boron compound is bonded to a portion of the carbon atoms of the carbon material.Type: ApplicationFiled: November 20, 2012Publication date: November 13, 2014Inventors: Takehiro Yamamoto, Yohei Yagishita, Ryo Kurokawa, Jae-Seong Yeo, Jin Miyawaki, Isao Mochida, Seong-Ho Yoon
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Publication number: 20140332716Abstract: An anode active material for a secondary battery includes an amount of a first element group in a range of about 0 at % (atomic percent) to about 30 at %, an amount of a second element group in a range of about 0 at % to about 20 at %, a balance of silicon and other unavoidable impurities. The first element group may include copper (Cu), iron (Fe), or a mixture thereof, and the second element group may include titanium (Ti), nickel (Ni), manganese (Mn), aluminum (Al), chromium (Cr), cobalt (Co), zinc (Zn), boron (B), beryllium (Be), molybdenum (Mo), tantalum (Ta), sodium (Na), strontium (Sr), phosphorous (P) or mixtures thereof.Type: ApplicationFiled: July 25, 2014Publication date: November 13, 2014Inventors: Soon Ho HONG, Jong Soo CHO, Jeong Tak Moon
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Publication number: 20140332715Abstract: To increase the amount of lithium ions that can be received and released in and from a positive electrode active material to achieve high capacity and high energy density of a secondary battery. A composite material of crystallites of LiMn2O4 (crystallites with a spinel crystal structure) and crystallites of Li2MnO3 (crystallites with a layered rock-salt crystal structure) is used as a positive electrode active material. The lithium manganese oxide composite has high structural stability and high capacity.Type: ApplicationFiled: May 8, 2014Publication date: November 13, 2014Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Takahiro KAWAKAMI, Shuhei Yoshitomi, Teruaki Ochiai, Satoshi Seo, Yohei Momma, Yumiko Saito
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Publication number: 20140335417Abstract: A lithium-ion secondary battery (100A) includes a positive electrode current collector (221A) and a positive electrode active material layer (223A) retained on the positive electrode current collector (221A). The positive electrode active material layer (223A) contains positive electrode active material particles, a conductive agent, and a binder. The positive electrode active material particles (610A) each include a shell portion (612) made of primary particles (800) of a layered lithium-transition metal oxide, a hollow portion (614) formed inside the shell portion (612), and a through-hole (616) penetrating through the shell portion (612). The primary particles (800) of the lithium-transition metal oxide have a major axis length of less than or equal to 0.8 ?m in average of the positive electrode active material layer (223A).Type: ApplicationFiled: December 4, 2012Publication date: November 13, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hiroki Nagai
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Publication number: 20140335407Abstract: A method for configuring a non-lithium-intercalation electrode includes intercalating an insertion species between multiple layers of a stacked or layered electrode material. The method forms an electrode architecture with increased interlayer spacing for non-lithium metal ion migration. A laminate electrode material is constructed such that pillaring agents are intercalated between multiple layers of the stacked electrode material and installed in a battery.Type: ApplicationFiled: May 9, 2014Publication date: November 13, 2014Inventors: Yan YAO, Yanliang LIANG
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Publication number: 20140332717Abstract: A method of producing a silicon/carbon composite material which includes the following successive steps: providing a silicon/polymer composite material from silicon particles and a carbonaceous polymer compound, precursor of carbon and able to be cross-linked, performing at least partial cross-linking of the polymer of the silicon/polymer composite material so as to obtain a cross-linked silicon/polymer composite material, the polymer having a cross-linking rate greater than or equal to 50% and, pyrolysing the cross-linked silicon/polymer composite material until said silicon/carbon composite material is obtained.Type: ApplicationFiled: September 13, 2012Publication date: November 13, 2014Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE D'ORLEANS, COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Cyril Paireau, Séverine Jouanneau-Si Larbi, François Béguin, Encarnacion Raymundo-Pinero
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Publication number: 20140332718Abstract: A lithium silicate-based compound according to the present invention is expressed by a general formula, Li(2?a+b)AaMn(1?x?y)CoxMySiO(4+?)Cl? (In the formula: “A” is at least one element selected from the group consisting of Na, K, Rb and Cs; “M” is at least one member selected from the group consisting of Mg, Ca, Al, Ni, Fe, Nb, Ti, Cr, Cu, Zn, Zr, V, Mo and W; and the respective subscripts appear to be as follows: 0?“a”<0.2; 0?“b”<1; 0<“x”<1; 0?“y”?0.5; ?0.25?“?”?1.25; and 0?“?”?0.05). The lithium silicate-based compound is used as a positive-electrode active material for secondary battery whose discharge average voltage is higher, and which is able to sorb and desorb lithium ions.Type: ApplicationFiled: October 12, 2012Publication date: November 13, 2014Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Akira Kojima, Toshikatsu Kojima, Mitsuharu Tabuchi, Tetsuo Sakai, Takuhiro Miyuki, Junichi Niwa, Kazuhito Kawasumi, Masakazu Murase
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Patent number: 8883352Abstract: To provide a surface modified lithium-containing composite oxide having excellent discharge capacity, volume capacity density, safety, durability for charge and discharge cycles, and high rate property. A surface modified lithium-containing composite oxide, comprising particles of a lithium-containing composite oxide having a predetermined composition and a lithium titanium composite oxide containing lithium, titanium and element Q (wherein Q is at least one element selected from the group consisting of B, Al, Sc, Y and In) contained in the surface layer of the particles, wherein the lithium titanium composite oxide is contained in the surface layer of the particles in a proportion of the total amount of titanium and element Q in the lithium titanium composite oxide contained in the surface layer to the lithium-containing composite oxide particles is from 0.01 to 2 mol %, and the lithium titanium composite oxide has a peak at a diffraction angle 2? within a range of 43.8±0.Type: GrantFiled: August 3, 2011Date of Patent: November 11, 2014Assignee: AGC Seimi Chemical Co., Ltd.Inventors: Remi Hiraki, Takeshi Kawasato
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Publication number: 20140329145Abstract: An alkaline, rechargeable electrochemical cell includes a pasted electrode structure in which a composition comprising a paste matrix component includes cobalt in an amount greater than 6 weight percent ranging up to 14 weight percent. The matrix may also include a rare earth such as yttrium. The composition further includes particles of nickel hydroxide dispersed in the matrix, and these particles include cobalt levels ranging from greater than 8 atomic percent up to 15 atomic percent. Cells incorporating these materials have good charging efficiency at elevated temperatures.Type: ApplicationFiled: February 6, 2013Publication date: November 6, 2014Applicant: Ovonic Battery Company, Inc.Inventor: Ovonic Battery Company, Inc.
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Publication number: 20140326918Abstract: A system and method thereof are provided for multi-stage processing of one more precursor compounds into a battery material. The system includes a mist generator, a drying chamber, one or more gas-solid separators, and one or more in-line reaction modules comprised of one or more gas-solid feeders, one or more gas-solid separators, and one or more reactors. Various gas-solid mixtures are formed within the internal plenums of the drying chamber, the gas-solid feeders, and the reactors. In addition, heated air or gas is served as the energy source within the processing system and as the gas source for forming the gas-solid mixtures to facilitate reaction rate and uniformity of the reactions therein. Precursor compounds are continuously delivered into the processing system and processed in-line through the internal plenums of the drying chamber and the reaction modules into final reaction particles useful as a battery material.Type: ApplicationFiled: May 23, 2013Publication date: November 6, 2014Inventor: LIang-Yuh Chen
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Patent number: 8877384Abstract: A negative electrode active material of lithium secondary battery include: at least one of a petroleum-derived green coke and a coal-derived green coke, and at least one of a petroleum-derived calcined coke and a coal-derived calcined coke within a mass ratio range of 90:10 to 10:90; a phosphorous compound within a range of 0.1 to 6.0 parts by mass in amount equivalent to phosphor relative to 100 parts by mass of the at least one of the green cokes and the at least one of the calcined cokes; and a boron compound within a range of 0.1 to 6.0 parts by mass in amount equivalent to boron relative to 100 parts by mass of the at least one of the green cokes and the at least one of the calcined cokes.Type: GrantFiled: May 14, 2010Date of Patent: November 4, 2014Assignee: Nippon Steel Chemical Co., Ltd.Inventors: Taisa Ikeda, Kazuki Tagawa, Yoichi Kawano
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Patent number: 8877090Abstract: There is provided a novel positive electrode active material for a secondary battery. A positive electrode active material for a secondary battery according to the present exemplary embodiment is represented by the following formula (I):Lia(NixCryMn2-x-y-zM1z)O4(I) wherein 0<x, 0<y, 0<z, x+y+z<2, and 0?a?2; and M1 contains at least one selected from the group consisting of Na and Mg. A positive electrode for a secondary battery according to the present exemplary embodiment has the positive electrode active material for a secondary battery according to the present exemplary embodiment.Type: GrantFiled: November 16, 2011Date of Patent: November 4, 2014Assignee: Nec CorporationInventors: Takehiro Noguchi, Hideaki Sasaki, Makiko Uehara
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Patent number: 8877379Abstract: Disclosed is a positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same, and the positive active material includes a carbon material having a structure with “n” polycyclic nano sheets, wherein “n” is an integer of 1 to 30 with hexagonal rings having six carbon atoms condensed and substantially aligned in a plane, the polycyclic nano sheets are laminated in a vertical direction to the plane; and a lithium-containing olivine-based compound attached to the surface of the carbon material is formed with a carbon-coating layer on its surface.Type: GrantFiled: September 23, 2011Date of Patent: November 4, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Woon-Suk Jang, Chae-Woong Cho, Bum-Jin Chang, Ki-Jun Kim, Kwi-Seok Choi
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Publication number: 20140319414Abstract: A negative electrode active material for an electric device includes an alloy containing Si in a range from 23% to 64% exclusive, Sn in a range from 4% to 58% inclusive, Zn in a range from 0% to 65% exclusive, and inevitable impurities as a residue. The negative electrode active material can be obtained with a multi DC magnetron sputtering apparatus by use of, for example, silicon, tin and zinc as targets. An electric device such as a lithium ion secondary battery employing the negative electrode active material can improve cycle life of the battery and ensure a high capacity and high cycle durability.Type: ApplicationFiled: October 29, 2012Publication date: October 30, 2014Inventors: Manabu Watanabe, Osamu Tanaka, Masao Yoshida
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ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHUM SECONDARY BATTERY COMPRISING THE SAME
Publication number: 20140322601Abstract: The anode active material of the present invention comprises silicon-based particles obtained from at least one of silicon, a silicon oxide and a silicon alloy, and the silicon-based particles have a faceted shape, thereby providing high capacity and good life characteristics without causing any deterioration which has been generated in the use of conventional silicon-based particles, and eventually providing a lithium secondary battery having such characteristics.Type: ApplicationFiled: July 9, 2014Publication date: October 30, 2014Inventors: Yong-Ju Lee, Yoon-Ah Kang, Je-Young Kim, Seung-Youn Choi, Mi-Rim Lee, Hye-Ran Jung, Jung-Woo Yoo -
Publication number: 20140319413Abstract: Provided are a crystalline iron phosphate doped with metals (MFePO4), which is used as a precursor of olivine-structured LiMFePO4 (LMFP) used as a cathode active material for lithium secondary batteries, and a method of preparing the crystalline iron phosphate, in which a crystalline iron phosphate doped with metals has the following Formula I obtained by crystallizing amorphous iron phosphate and doping the latter with a different type of a metal. Formula I: MFePO4, where M is selected from the group consisting of Ni, Co, Mn, Cr, Zr, Nb, Cu, V, Ti, Zn, Al, Ga, Mg, and B. The preparation of olivine-structured LMFP, which is used as a cathode active material for lithium secondary batteries, using the crystalline iron phosphate doped with metals as a precursor can increase efficiency and reduce processing costs as compared to another method of preparing the same by mixing different types of metals in a solid state.Type: ApplicationFiled: December 14, 2012Publication date: October 30, 2014Applicant: SAMSUNG FINE CHEMICALS CO., LTDInventors: Hyun A Song, Woo Young Yang
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Publication number: 20140322604Abstract: An electrode-active material includes sulfur or a sulfur compound in particles represented by LixAyDzPO4 (wherein A represents one or two or more elements selected from the group consisting of Co, Mn, Ni, Fe, Cu, and Cr; D represents one or two or more elements selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, Y, and rare earth elements; 0<x<2; 0<y<1; and 0?z<1.5), in which a sulfur content in the particles is high in the centers of the particles and is low in the vicinity of surfaces of the particles.Type: ApplicationFiled: April 23, 2014Publication date: October 30, 2014Applicant: SUMITOMO OSAKA CEMENT CO., LTD.Inventors: Takao KITAGAWA, Akinori YAMAZAKI
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Publication number: 20140317912Abstract: The disclosure is related to battery systems. More specifically, embodiments of the disclosure provide a nanostructured conversion material for use as the active material in battery cathodes. In an implementation, a nanostructured conversion material is a glassy material and includes a metal material, one or more oxidizing species, and a reducing cation species mixed at a scale of less than 1 nm. The glassy conversion material is substantially homogeneous within a volume of 1000 nm3.Type: ApplicationFiled: June 29, 2014Publication date: October 30, 2014Inventors: Timothy Holme, Jagdeep Singh, Rainer Fasching, Weston Arthur Hermann, Cheng Chieh Chao, Bradley O. Stimson, Karl Brown
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Patent number: 8871117Abstract: Provided is a cathode for lithium secondary batteries comprising a combination of one or more compounds selected from Formula 1 and one or more compounds selected from Formula 2. The cathode provides a high-power lithium secondary battery composed of a non-aqueous electrolyte which exhibits long lifespan, long-period storage properties and superior stability at ambient temperature and high temperatures.Type: GrantFiled: April 16, 2013Date of Patent: October 28, 2014Assignee: LG Chem, Ltd.Inventors: Sung Kyun Chang, Hong-Kyu Park, Sinyoung Park, Soo Min Park, Ji Eun Lee
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Patent number: 8871113Abstract: A positive active material includes first and second lithium nickel complex oxides. A positive electrode and lithium battery include the positive active material. The positive active material, and the lithium battery including the positive active material have increased filling density, are thermally stable, and have improved capacity.Type: GrantFiled: March 8, 2011Date of Patent: October 28, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Min-Han Kim, Do-Hyung Park, Ji-Hyun Kim, Jeong-Seop Lee, Chang-Hyuk Kim, Seon-Young Kwon, Yoon-Chang Kim
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Publication number: 20140312267Abstract: An exemplary embodiment of a synthesis method includes the following acts or steps: providing LiMn2O4 material as a precursor; leaching Mn from the LiMn2O4 material using an acid to form a synthesized solution; adding carbonaceous material to the synthesized solution; adding phosphoric acid to the synthesized solution with carbonaceous material to form MnPO4 composite material; and adding Li containing compound to the MnPO4 composite material to form LiMnPO4 composite material.Type: ApplicationFiled: April 18, 2013Publication date: October 23, 2014Inventors: Chun-Chieh Chang, Tsun Yu Chang
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Publication number: 20140315087Abstract: A method of preparing a positive active material for a rechargeable lithium battery includes dry-coating a surface of a material capable of doping and dedoping lithium with a carbon nanotube.Type: ApplicationFiled: November 5, 2013Publication date: October 23, 2014Applicant: SAMSUNG SDI CO., LTD.Inventors: Dong-Hwan YU, Young-Jin CHOI, Young-Soo JUNG, Ji-Yong LEE, Sung-Hoon KIM
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Publication number: 20140312268Abstract: Disclosed is a composition comprising an ethylene elastomer and a solvent wherein the composition is a binder for a lithium ion battery; the elastomer comprises or is produced from repeat units derived from ethylene and one or more comonomer selected from the group consisting of an alky(meth)acrylate; and the elastomer comprises a curing agent. The elastomer can further comprise or can be further produced from repeat units derived from a second alky (meth)acrylate, 2-butene-1,4-dioic acid or its derivative, or both.Type: ApplicationFiled: April 23, 2014Publication date: October 23, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventor: Chongsoo Lim
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Publication number: 20140312269Abstract: The present invention relates to a doped lithium titanium spinel with formula I Li4?yK?yTi5?zK?zO12?xAx (I), wherein A is on or more anions selected from the group is consisting I, N, Br, Cl, F, K?, K? are each one or more cations selected from the group consisting of Na, K, Cd, Se, Te, S, Sb, As, P, Pb, Bi, Hg, Si, C and 0?x, y, z?0.4. Further, the present invention relates to an electrode comprising a layer of such lithium titanium spinel and a secondary non-aqueous electrolyte battery with such an electrode.Type: ApplicationFiled: November 15, 2012Publication date: October 23, 2014Applicant: CLARIANT INTERNATIONAL, LTD.Inventors: Andreas Laumann, Michael Holzapfel, Genovefa Wendrich
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Patent number: 8865018Abstract: An anode active-material for rechargeable lithium batteries and methods of manufacturing the same. This includes preparing an anode active-material for rechargeable lithium batteries, including heat-treating a mixture of Li2CO3, MnO2, MgO, Al2O3 and Co3O4 at 900-1000° C. in air or oxygen for 10-48 hours, generating a lithium-containing oxide; generating metal-oxide nanoparticles MO (5-500 nm) (M represents Mg, Co or Ni, with a valence of 2); and dry or wet mixing 0.01-10 wt % of pulverized metal oxide nanoparticles with the lithium-containing oxide to form an anode active-material. Spinel type MgAl2O4 is substituted into a basic spinel-structure (Li1.1Mn1.9O4) for structural stability. Spinel type Co3O4 is substituted to improve electronic conductivity, improving battery performance.Type: GrantFiled: November 4, 2010Date of Patent: October 21, 2014Inventors: Jae Won Jo, Seung-Taek Myung
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Publication number: 20140307364Abstract: An object of the invention is to provide an electrode material slurry for preparation of lithium-ion secondary batteries favorable in properties and superior in storage stability and an aqueous binder composition for lithium-ion secondary batteries that can be used for production of lithium-ion secondary batteries superior in discharge rate characteristics and cycle characteristics. Provided is a binder composition for lithium-ion secondary battery electrode, comprising polymer particles containing (a) an ethylenic unsaturated carboxylic ester compound and (b) an ethylenic unsaturated sulfonic acid compound at a (a)/(b) mass ratio of (98 to 91)/(2 to 9) in a total (a) and (b) amount of 70 mass % or more, based on the monomeric raw materials.Type: ApplicationFiled: November 2, 2012Publication date: October 16, 2014Applicants: SEI CORPORATION, DENKI KAGAKU KOGYO KABUSHIKI KAISHAInventors: Hironori Konishi, Daisuke Shimiya, Kazuhiro Kote, Takehiko Sawai, Shinji Saito, Jun Nakagawa
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Publication number: 20140306152Abstract: There is provided a cathode active material for a lithium ion battery having good battery properties. The cathode active material for a lithium ion battery is represented by a composition formula: LixNi1?yMyO2+? wherein M is one or more selected from Sc, Ti, V, Cr, Mn, Fe, Co, Cu, Zn, Ga, Ge, Al, Bi, Sn, Mg, Ca, B, and Zr; 0.9?x?1.2; 0<y?0.7; and ?>0.1, and has a moisture content measured by Karl Fischer titration at 300° C. of 1100 ppm or lower.Type: ApplicationFiled: September 21, 2012Publication date: October 16, 2014Inventor: Kentaro Okamoto
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Publication number: 20140306664Abstract: The present invention relates to the manufacture of a high capacity electrode by synthesizing an excellent Li2MnO3-based composite material Li(LixNiyCozMnwO2) to improve the characteristics of an inactive Li2MnO3 material with a specific capacity of about 460 mAh/g. Here, a manufacturing method of a cathode material for a lithium secondary battery uses a Li2MnO3-based composite material Li(LixNiyCozMnwO2) by reacting a starting material wherein a nickel nitrate solution, a manganese nitrate solution and a cobalt nitrate solution are mixed, with a complex agent by co-precipitation.Type: ApplicationFiled: October 19, 2012Publication date: October 16, 2014Applicant: Korea Institute of Industrial TechnologyInventors: Ho Sung Kim, Ju Hee Kang, Ik Hyun Oh, Seong Jae Boo, Duck Rye Chang, Tae Won Kim, Sung Hee Park, Kyeong Wan Kim
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Publication number: 20140308584Abstract: An active material for a nonaqueous electrolyte secondary battery contains a lithium transition metal composite oxide having an ?-NaFeO2-type crystal structure and being represented by the compositional formula: Li1+?Me1??O2 wherein Me is a transition metal element containing Co, Ni and Mn and ?>0. In the lithium transition metal composite oxide, the molar ratio of Li to the transition metal element Me (Li/Me) is 1.2 to 1.4, D10 is 6 to 9 ?m, D50 is 13 to 16 ?m and D90 is 18 to 32 ?m where particle sizes at cumulative volumes of 10%, 50% and 90% in a particle size distribution of secondary particles are D10, D50 and D90, respectively, and the particle size of a primary particle is 1 ?m or less.Type: ApplicationFiled: October 24, 2012Publication date: October 16, 2014Applicant: GS Yuasa International Ltd.Inventor: Daisuke Endo
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Publication number: 20140306149Abstract: A fluoro material is provided for use as an electrode active material as well as a process for producing it. The material includes particles of a fluorosulfate which corresponds to formula (I) Li1-yFe1-xMnxSO4F (I) in which 0<x?1 and 0?y<1. The material includes a phase of triplite structure and optionally a phase of tavorite structure, the phase of triplite structure representing at least 50% by volume. The material may be obtained from precursors of the elements of which it is constituted, via a ceramic route, via an ionothermal route or via a polymer route.Type: ApplicationFiled: March 8, 2012Publication date: October 16, 2014Applicant: UNIVERSITE DE PICARDIE JULES VERNEInventors: Jean-Marie Tarascon, Prabeer Barpanda, Mohamed Ati, Jean-Noel Chotard, Michel Armand
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Layered Lithium Nickel Oxide, Process for Producing the Same and Lithium Secondary Cell Employing It
Publication number: 20140306150Abstract: Provided is a metal oxide for a cathode active material of a lithium secondary battery capable of having improved structural and thermal stability, high efficiency, high capacity, and excellent cycle property and life span property, the metal oxide represented by the following Chemical Formula 1: LiaNixCoyMzO2??[Chemical Formula 1] (in Chemical Formula 1, M is any one selected from aluminum, magnesium, titanium, gallium and indium, and a, x, y and z satisfy 1.01?a?1.05, 0.7?x?0.9, 0?y?0.17, 0.02?z?0.16, and x+y+z=1, respectively).Type: ApplicationFiled: April 9, 2014Publication date: October 16, 2014Applicant: SK Innovation Co., Ltd.Inventors: Soo Ho Kim, Hae Suk Hwang, Min Gu Kang, Jae Phil Cho, Min Ki Jo -
Publication number: 20140308579Abstract: Provided are a positive electrode active material for a sodium ion secondary battery, and a positive electrode and a sodium ion secondary battery using the material. The positive electrode active material for a sodium ion secondary battery comprises a lithium sodium-based compound containing lithium (Li), sodium (Na), iron (Fe), and oxygen (O).Type: ApplicationFiled: April 8, 2014Publication date: October 16, 2014Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Akira KOJIMA, Kazuhito KAWASUMI, Junichi NIWA, Yuta IKEUCHI, Toshikatsu KOJIMA, Tetsuo SAKAI
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Publication number: 20140306151Abstract: Provided is an active material for a nonaqueous electrolyte secondary battery containing a lithium transition metal composite oxide which has a crystal structure of an ?-NaFeO2 type and is represented by a compositional formula Li1+?Me1??O2 (Me is a transition metal element including Co, Ni and Mn, ?>0). In the lithium transition metal composite oxide, a compositional ratio Li/Me of lithium Li to the transition metal element Me is 1.25 to 1.425, and an oxygen positional parameter, determined from crystal structure analysis by Rietveld method at the time of using a space group R3-m as a crystal structure model based on an X-ray diffraction pattern in a state of a discharge end, is 0.262 or less.Type: ApplicationFiled: December 5, 2012Publication date: October 16, 2014Inventor: Daisuke Endo
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Patent number: 8859149Abstract: A lithium secondary battery that has high capacity and excellent cycle characteristics is provided. The lithium ion secondary battery includes a cathode, an anode, and an electrolyte. The anode has, on an anode current collector, an anode active material layer including LixSiFy (1?x?2 and 5?y?6) as an anode active material.Type: GrantFiled: May 19, 2011Date of Patent: October 14, 2014Assignee: Sony CorporationInventor: Toshikazu Nakamura
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Patent number: 8859148Abstract: Provided is an electrode active material comprising a nickel-based lithium transition metal oxide (LiMO2) wherein the nickel-based lithium transition metal oxide contains nickel (Ni) and at least one transition metal selected from the group consisting of manganese (Mn) and cobalt (Co), wherein the content of nickel is 50% or higher, based on the total weight of transition metals, and has a layered crystal structure and an average primary diameter of 3 ?m or higher, wherein the amount of Ni2+ taking the lithium site in the layered crystal structure is 5.0 atom % or less.Type: GrantFiled: June 2, 2010Date of Patent: October 14, 2014Assignee: LG Chem, Ltd.Inventors: Sinyoung Park, Sung kyun Chang, Hong-Kyu Park, Seung Tae Hong, Youngsun Choi
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Publication number: 20140299813Abstract: Provided is a lithium transition metal oxide having an ?-NaFeO2 layered crystal structure, as a cathode active material for lithium secondary battery, wherein the transition metal includes a blend of Ni and Mn, an average oxidation number of the transition metals except lithium is +3 or higher, and the lithium transition metal oxide satisfies Equations 1 and 2: 1.0<m(Ni)/m(Mn) ??(1) m(Ni2+)/m(Mn4+)<1 ??(2) wherein m(Ni)/m(Mn) represents a molar ratio of nickel to manganese and m (Ni2+)/m (Mn4+) represents a molar ratio of Ni2+ to Mn4+. The cathode active material of the present invention has a uniform and stable layered structure through control of oxidation number of transition metals to a level higher than +3, in contrast to conventional cathode active materials, thus advantageously exerting improved overall electrochemical properties including electric capacity, in particular, superior high-rate charge/discharge characteristics.Type: ApplicationFiled: June 19, 2014Publication date: October 9, 2014Inventors: Sung-Kyun CHANG, Hong-Kyu PARK, Sinyoung PARK, Hyo-shik KIL, Hera LEE
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Publication number: 20140302388Abstract: A method for extracting ions from an active material for use in a battery electrode includes mixing the active material and an activating compound to form a mixture. The mixture is annealed such that an amount of ions is extracted from the active material, an amount of oxygen is liberated from the active material, and an activated active material is formed. Embodiments of the invention include the activated active material, the electrode, and the primary and secondary batteries formed from such activated active materials.Type: ApplicationFiled: April 15, 2014Publication date: October 9, 2014Applicants: Wildcat Discovery Technologies, Inc., Tianjin B&M Science and Technology Joint-Stock Co., Ltd.Inventors: Bin Li, Wei Tong, Jen Hsien Yang
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Publication number: 20140302391Abstract: The present disclosure is directed at clathrate (Type I) allotropes of silicon, germanium and tin. In method form, the present disclosure is directed at methods for forming clathrate allotropes of silicon, germanium or tin which methods lead to the formation of empty cage structures suitable for use as electrodes in rechargeable type batteries.Type: ApplicationFiled: March 27, 2014Publication date: October 9, 2014Applicant: Southwest Research InstituteInventors: Michael A. MILLER, Kwai S. CHAN, Wuwei LIANG, Candace K. CHAN
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Publication number: 20140302615Abstract: Provided is a cathode active material containing a Ni-based lithium mixed transition metal oxide. More specifically, the cathode active material comprises the 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, which is prepared by a solid-state reaction of Li2CO3 with a mixed transition metal precursor under an oxygen-deficient atmosphere, and has a Li2CO3 content of less than 0.07% by weight of the cathode active material as determined by pH titration. The cathode active material in accordance with the present invention and substantially free of water-soluble bases such as lithium carbonates and lithium sulfates and therefore has excellent high-temperature and storage stabilities and a stable crystal structure.Type: ApplicationFiled: June 18, 2014Publication date: October 9, 2014Applicant: LG Chem, Ltd.Inventors: Hong-Kyu Park, Sun sik Shin, Sin young Park, Ho suk Shin, Jens M. Paulsen