Having Utility As A Reactive Material In An Electrochemical Cell; E.g., Battery, Etc. Patents (Class 252/182.1)
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Publication number: 20150118564Abstract: The present invention provides a positive electrode composition for a non-aqueous electrolyte secondary battery, wherein the composition includes a lithium-transition metal composite oxide represented by the following compositional formula: LiaNi1-x-yCoxM1yM2zMo?Nb?O2 wherein 1.00?a?1.50, 0.00?x?0.50, 0.00?y?0.50, 0.000?z?0.020, 0.002???0.020, 0.002???0.020, and 0.00?x+y?0.70, M1 represents at least one element selected from the group consisting of Mn and Al, and M2 represents at least one element selected from the group consisting of Zr, Ti, Mg, Ta, and V, and a boron compound including at least boron and oxygen.Type: ApplicationFiled: October 29, 2014Publication date: April 30, 2015Inventors: Kosuke SHIMOKITA, Makoto SHIMAHARA, Kiyofumi INOUCHI
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Publication number: 20150115206Abstract: A predoping method for lithium, which is characterized by mixing and kneading, in the presence of a solvent, lithium metal with (a) silicon and a composite dispersion of silicon and silicon dioxide, (b) particles represented by SiOx (wherein 0.5?x<1.6) and having a fine structure wherein fine silicon particles are dispersed in a silicon-based compound, and (c) an Si-based material that is a mixture of one or more oxides selected from among the lower oxides of silicon represented by the above-mentioned formula and that is capable of absorbing and desorbing lithium ions; a lithium-predoped electrode which uses the predoping method for lithium; and an electricity storage device.Type: ApplicationFiled: May 8, 2013Publication date: April 30, 2015Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Masanori Fujii, Hisashi Satake, Hajime Kinoshita
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Publication number: 20150118562Abstract: A rechargeable lithium ion battery includes a positive electrode including a positive active material; negative electrode; and electrolyte, wherein the rechargeable lithium ion battery is used at a voltage of less than about 4.5 V, and activated by performing a first cycle charging at a voltage of greater than or equal to about 4.55 V, the positive active material is a ternary-component positive active material including a Li2MnO3-based solid solution, and an average primary particle diameter of the Li2MnO3-based solid solution ranges from about 50 to about 300 nm.Type: ApplicationFiled: October 24, 2014Publication date: April 30, 2015Inventors: Masatsugu Nakano, Yuki Takei, Keisuke Nomura
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Patent number: 9017875Abstract: The present application provides a nonaqueous electrolyte secondary battery which includes a cathode having a cathode active material layer, an anode, and a nonaqueous electrolyte, wherein the cathode active material layer includes secondary particles of a lithium phosphate compound having olivine structure, an average particle diameter A of primary particles constituting the secondary particles is 50 nm or more and 500 nm or less, and a ratio B/A of a pore diameter B of the secondary particles to the average particle diameter A of the primary particles is 0.10 or more and 0.90 or less.Type: GrantFiled: December 1, 2008Date of Patent: April 28, 2015Assignee: Sony CorporationInventor: Takehiko Ishii
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Publication number: 20150111097Abstract: A cathode active material including a composite transition metal oxide including: sodium; a first transition metal; and a second transition metal, wherein the composite transition metal oxide has a first diffraction peak corresponding to a Miller index of (003) and derived from a layered rock salt structure, and a second diffraction peak corresponding to a Miller index of (104) and derived from a cubic rock salt structure in an X-ray powder diffraction (XRD) pattern, wherein an intensity ratio (I1/I2) of the first diffraction peak to the second diffraction peak is about 7 or greater.Type: ApplicationFiled: October 21, 2014Publication date: April 23, 2015Inventors: Kwang-jin PARK, Dong-wook HAN, Hyun-jin KIM, Seok-soo LEE, Won-seok CHANG
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Publication number: 20150108396Abstract: Provided are a positive electrode active material for a lithium ion secondary battery and a secondary battery using the same, by which high discharge energy is obtained at low cost and capacity drop with cycles can be suppressed. A positive electrode active material for a secondary battery according to the embodiment of the present invention is represented by the following formula (I): Lia(FexNiyMn2-x-y-zAz)O4??(I) wherein 0.2<x?1.2, 0<y<0.5, 0?a?1.2 and 0<z?0.3; A is at least one selected from the group consisting of Li, B, Na, Mg, Al, K and Ca.Type: ApplicationFiled: October 12, 2012Publication date: April 23, 2015Applicant: NEC CorporationInventors: Makiko Takahashi, Takehiro Noguchi, Hideaki Sasaki
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Publication number: 20150111102Abstract: A negative active material including graphite; silicon nanowires; and silicon nanoparticles, wherein a silicon nanowire of the silicon nanowires and a silicon nanoparticle of the silicon nanoparticles are each disposed on a particle of the graphite to form a composite with the graphite.Type: ApplicationFiled: April 8, 2014Publication date: April 23, 2015Applicant: Samsung Electronics Co., Ltd.Inventors: Dong-jin HAM, Jeong-kuk SHON, Min-sang SONG, Seung-sik HWANG, Jun-hwan KU, Jae-jun CHANG, Sang-min JI, Jae-man CHOI
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Publication number: 20150108398Abstract: Provided is a cathode active material for a non-aqueous electrolyte secondary battery capable of obtaining high initial discharge capacity and good output characteristics at low temperature. In order to achieve this, a cathode active material that is a lithium nickel composite oxide composed of secondary particles that are an aggregate of primary particles is expressed by the general expression: Liw(Ni1-x-yCoxAly)1-zMzO2 (where 0.98?w?1.10, 0.05?x?0.3, 0.01?y?0.1, 0?z?0.05, and M is at least one metal element selected from a group consisting of Mg, Fe, Cu, Zn and Ga), and where the crystallite diameter at (003) plane of that lithium nickel composite oxide that is found by X-ray diffraction and the Scherrer equation is within the range of 1200 ? to 1600 ? is used as the cathode material.Type: ApplicationFiled: December 9, 2014Publication date: April 23, 2015Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, SUMITOMO METAL MINING CO., LTD.Inventors: Katsuya KASE, Syuhei ODA, Ryuichi KUZUO, Yutaka OYAMA
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Publication number: 20150111103Abstract: Provided are an anode active material for lithium ion rechargeable batteries and an anode, which are capable, when used in a lithium ion rechargeable battery, of providing excellent charge/discharge capacity and cycle characteristics, and also high rate performance, as well as a lithium ion rechargeable battery using the same. The anode active material contains particles having a crystal phase represented by RAx, wherein R is at least one element selected from the group consisting of rare earth elements including Sc and Y but excluding La, A is Si and/or Ge, and x satisfies 1.0?x?2.0, and a crystal phase consisting of A. The material is thus useful as an anode material for lithium ion rechargeable batteries.Type: ApplicationFiled: May 10, 2013Publication date: April 23, 2015Applicant: SANTOKU CORPORATIONInventors: Hiroki Sakaguchi, Hiroyuki Usui, Tadatoshi Murota, Masatoshi Kusatsu
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Publication number: 20150108399Abstract: An active material for a battery includes a mixed phase includes a lithium titanium composite oxide phase and a nonstoichiometric titanium oxide phase. This active material is excellent in lithium absorption/desorption performance, exhibiting high electric potentials in lithium absorption/desorption and high conductivity.Type: ApplicationFiled: December 22, 2014Publication date: April 23, 2015Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Hiroki INAGAKI, Norio Takami
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Publication number: 20150111105Abstract: To provide an active material with high capacity, high initial charge-discharge efficiency, and high average discharge voltage. An active material according to the present invention includes a first active material and a second active material, wherein the ratio (?) of the second active material (B) to the total amount by mole of the first active material (A) and the second active material (B) satisfies 0.4 mol %???18 mol % [where ?=(B/(A+B))×100].Type: ApplicationFiled: March 27, 2013Publication date: April 23, 2015Applicant: TDK CORPORATIONInventors: Tomohiko Kato, Atsushi Sano, Masaki Sobu, Akinobu Nojima
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Publication number: 20150108412Abstract: A manganese(Mn)-bearing monometal phosphate of the type Mn3(PO4)2.3H2O or mixed-metal phosphate of the type (Mnx, Mety)3(PO4)2.3H2O, wherein x+y=1 and Met represents one or more metals selected from Fe, Co, Ni, Sc, Ti, V, Cr, Cu, Zn, Be, Mg, Ca, Sr, Ba, Al, Zr, Hf, Re, Ru, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, characterised in that in the X-ray powder diffraction diagram the phosphate has peaks at 10.96±0.05, 12.78±0.17, 14.96±0.13, 17.34±0.15, 18.98±0.18, 21.75±0.21, 22.07±0.11, 22.97±0.10, 25.93±0.25, 26.95±0.30, 27.56±0.10, 29.19±0.12, 29.84±0.21, 30.27±0.12, 34.86±0.21, 35.00±0.20, 35.33±0.30, 35.58±0.10, 35.73±0.12, 42.79±0.45, 43.37±0.45, 44.70±0.15 and 44.93±0.20 degrees two-theta, based on CuK?-radiation.Type: ApplicationFiled: December 21, 2012Publication date: April 23, 2015Inventors: Gunnar Buehler, Christian Graf, Andreas Jazdanian, Killian Schwarz, Michael Rapphahn
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Publication number: 20150108397Abstract: A positive electrode composition for a non-aqueous electrolyte secondary battery includes a lithium transition metal composite oxide represented by a formula LiaNi1-x-yCoxMnyMzO2, wherein 1.00?a?1.50, 0<x?0.50, 0<y?0.50, 0.00?z?0.02, 0.40?x+y?0.70, M is at least one element selected from the group consisting of Zr, Ti, Mg, Ta, Nb and Mo, and a boron compound that at least contains boron and oxygen.Type: ApplicationFiled: October 16, 2014Publication date: April 23, 2015Inventors: Atsushi TAKEOKA, Yu NISHITA
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Patent number: 9012076Abstract: Disclosed herein is an organic radical polyimide, represented by Formula 1 below: The organic radical polyimide can be applied to a cathode, an anode or the like, and can be widely applied to an organic solar cell, an organic transistor, organic memory or the like. Further, the organic radical polyimide can be used to manufacture a secondary battery having high energy density because it has high radical density. Further, the organic radical polyimide can be formed into an ultrathin film such as a polymer film and can be used to manufacture a flexible next-generation battery because it does not include metal components and causes a stable oxidation-reduction reaction.Type: GrantFiled: April 13, 2012Date of Patent: April 21, 2015Assignee: Kyungpook National University Industry-Academic Cooperation FoundationInventors: Young Kyoo Kim, Hye Na Lee, Hwa Jeong Kim
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Patent number: 9011713Abstract: Provided are a composite including a lithium titanium oxide and a bismuth titanium oxide, a method of manufacturing the composite, an anode active material including the composite, an anode including the anode active material, and a lithium secondary battery having improved cell performance by including the anode.Type: GrantFiled: March 14, 2012Date of Patent: April 21, 2015Assignee: Samsung SDI Co., Ltd.Inventors: Min-sang Song, Kyu-sung Park, Gue-sung Kim, Young-min Choi
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Publication number: 20150102257Abstract: The disclosure relates to an anode or an electrolytic capacitor electrode including an active anode material containing a chalcogen-containing-germanium composition in which the germanium:chalcogen atom ratio is between 80:20 and 98:2. The disclosure also relates to an anode including an active anode material containing a lithium and germanium-containing alloy wherein the lithium:germanium atom ratio is 22:5 or less. The anode also includes a non-cycling lithium chalcogenide. The disclosure further relates to lithium ion batteries including such anodes. The disclosure additionally relates to capacitor electrodes containing similar materials and capacitors containing such electrodes.Type: ApplicationFiled: October 14, 2014Publication date: April 16, 2015Inventors: Charles Buddie Mullins, Paul Abel, Adam Heller, Kyle C. Klavetter
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Publication number: 20150102256Abstract: A cathode active material is provided which is capable of improving charge/discharged potential and increasing energy density. The cathode active material is for a lithium-ion secondary battery and is represented by the composition formula: xLi2MnO3-(1?x)LiNiaMnbO2. In the composition formula, x, a, and b are numerals satisfying the following relationships: 0.2<x<0.8, 0.5<a<1, 0<b<0.5, and a+b=1.Type: ApplicationFiled: May 31, 2012Publication date: April 16, 2015Applicant: Hitachi, Ltd.Inventors: Hiroaki Konishi, Akira Gunji, Xiaoliang Feng
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Publication number: 20150104711Abstract: A negative electrode for a lithium ion secondary battery according to the present invention includes a negative electrode active material and a binder, in which the negative electrode active material satisfies the following requirements (A), (B), and (C): (A) graphite powder is used as a core material, and at least a part of a surface of the graphite powder is coated with a carbon material having lower crystallinity than the graphite powder; (B) a specific surface area measured using a nitrogen adsorption BET method is more than or equal to 0.8 m2/g and less than or equal to 5.3 m2/g; and (C) an amount of dibutyl phthalate absorption measured according to JIS K 6217-4 is more than or equal to 32 cm3/100 g and less than or equal to 45 cm3/100 g.Type: ApplicationFiled: May 30, 2013Publication date: April 16, 2015Applicant: NEC Energy Devices, Ltd.Inventors: Ippei Waki, Yasutaka Kono, Tomoyuki Ohta
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Publication number: 20150104644Abstract: To provide metal-containing trimanganese tetraoxide combined particles with which a metal-substituted lithium manganese oxide excellent as a cathode material for a lithium secondary battery can be obtained, and their production process. Metal-containing trimanganese tetraoxide combined particles containing a metal element (excluding lithium and manganese). Such metal-containing trimanganese tetraoxide combined particles can be obtained by a production process comprising a crystallization step of crystalizing a metal-substituted trimanganese tetraoxide not by means of metal-substituted manganese hydroxide from a manganese salt aqueous solution containing manganese ions and metal ions other than manganese.Type: ApplicationFiled: March 29, 2013Publication date: April 16, 2015Applicant: TOSOH CORPORATIONInventors: Eiichi Iwata, Miki Yamashita, Yasuhiro Fujii
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Patent number: 9005815Abstract: A negative active material for a rechargeable lithium battery, a method of manufacturing the same, and a rechargeable lithium battery including the negative active material. The negative active material includes carbon particles having interplanar spacing (d002) ranging from about 0.34 nm to about 0.50 nm at a 002 plane, measured by X-ray diffraction using CuK?, and nitrogen on the surface of the carbon particles.Type: GrantFiled: November 17, 2010Date of Patent: April 14, 2015Assignee: Samsung SDI Co., Ltd.Inventors: Kyeu-Yoon Sheem, Bok-Hyun Ka, Da-Woon Han
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Publication number: 20150096897Abstract: The present invention provides a methanol generation device for generating methanol by reducing carbon dioxide, comprising: a container for storing an electrolyte solution containing carbon dioxide; a cathode electrode disposed in the container so as to be in contact with the electrolyte solution; an anode electrode disposed in the container so as to be in contact with the electrolyte solution; and an external power supply for applying a voltage so that a potential of the cathode electrode is negative with respect to a potential of the anode electrode. The cathode electrode has a region of Cu1-x-yNixAuy (0<x, 0<y, and x+y<1). The anode electrode has a region of a metal or a metal compound.Type: ApplicationFiled: December 10, 2014Publication date: April 9, 2015Inventors: HIROSHI HASHIBA, MASAHIRO DEGUCHI, SATOSHI YOTSUHASHI, YUKA YAMADA
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Publication number: 20150099176Abstract: A positive electrode active material includes LiMn1?xMxPO4 (wherein M represents at least one element selected from Mg, Fe, Ni, Co, Ti, and Zr; and 0?x<0.5); and 0.03% by weight or more and not more than 0.5% by weight of S (sulfur) and 0.03% by weight or more and not more than 0.5% by weight of N (nitrogen) relative to the weight of LiMn1?xMxPO4.Type: ApplicationFiled: October 3, 2014Publication date: April 9, 2015Inventors: Keigo HOSHINA, Hiroki INAGAKI, Norio TAKAMI, Kiyoshi KANAMURA
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Publication number: 20150099159Abstract: A positive electrode active material includes LiMn1-xMxPO4 (wherein M represents at least one element selected from Mg, Fe, Ni, Co, Ti, and Zr; and 0?x<0.5) and has an average pore diameter of 8 nm or more and not more than 25 nm and a total pore volume of 0.05 cm3/g or more and not more than 0.3 cm3/g.Type: ApplicationFiled: October 3, 2014Publication date: April 9, 2015Inventors: Keigo HOSHINA, Hiroki INAGAKI, Norio TAKAMI, Kiyoshi KANAMURA
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Publication number: 20150096169Abstract: A slurry for a positive electrode for a sulfide-based solid-state battery contains at least a fluorine-based copolymer containing vinylidene fluoride monomer units, a positive electrode active material, and a solvent or a dispersion medium. When a dry volume of the slurry is set to 100% by volume, a content ratio of the fluorine-based copolymer is 1.5 to 10% by volume.Type: ApplicationFiled: May 29, 2013Publication date: April 9, 2015Applicants: KUREHA CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Hasegawa, Hiroki Kubo, Yuichi Hashimoto, Daichi Kosaka, Keisuke Watanabe, Tamito Igarashi, Mitsuyasu Sakuma
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Publication number: 20150096898Abstract: The present invention provides a methanol generation device for generating methanol by reducing carbon dioxide, comprising: a container for storing an electrolyte solution containing carbon dioxide; a cathode electrode disposed in the container so as to be in contact with the electrolyte solution; an anode electrode disposed in the container so as to be in contact with the electrolyte solution; and an external power supply for applying a voltage so that a potential of the cathode electrode is negative with respect to a potential of the anode electrode. The cathode electrode includes a region of Cu1-xAux (0<x<1). The anode electrode includes a region of a metal or a metal compound.Type: ApplicationFiled: December 11, 2014Publication date: April 9, 2015Inventors: HIROSHI HASHIBA, MASAHIRO DEGUCHI, SATOSHI YOTSUHASHI, YUKA YAMADA
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Patent number: 8999583Abstract: A lithium-ion secondary battery allowed to improve cycle characteristics and initial charge-discharge characteristics is provided. The lithium-ion secondary battery includes a cathode; an anode; and an electrolytic solution. The anode includes an anode active material layer including a plurality of anode active material particles. The anode active material particles each include a core section and a coating section applied to a part or a whole of a surface of the core section, and the core section includes a silicon-based material (SiOx: 0?x<0.5) and the coating section includes an amorphous or low-crystalline silicon-based material (SiOy: 0.5?y?1.8).Type: GrantFiled: December 16, 2010Date of Patent: April 7, 2015Assignee: Sony CorporationInventors: Takakazu Hirose, Kenichi Kawase, Takashi Fujinaga, Masaharu Senoue, Motoki Endo, Masayuki Iwama
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Patent number: 8999574Abstract: A method of preparing a graphene-sulfur nanocomposite for a cathode in a rechargeable lithium-sulfur battery comprising thermally expanding graphite oxide to yield graphene layers, mixing the graphene layers with a first solution comprising sulfur and carbon disulfide, evaporating the carbon disulfide to yield a solid nanocomposite, and grinding the solid nanocomposite to yield the graphene-sulfur nanocomposite. Rechargeable-lithium-sulfur batteries having a cathode that includes a graphene-sulfur nanocomposite can exhibit improved characteristics. The graphene-sulfur nanocomposite can be characterized by graphene sheets with particles of sulfur adsorbed to the graphene sheets. The sulfur particles have an average diameter of less than 50 nm.Type: GrantFiled: March 26, 2014Date of Patent: April 7, 2015Assignee: Battelle Memorial InstituteInventors: Jun Liu, John P. Lemmon, Zhenguo Yang, Yuliang Cao, Xiaolin Li
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Publication number: 20150090940Abstract: The present application relates to a process for the preparation of compounds of general formula (I) Lia?bM1bFe1?cM2cPd?eM3eOx??(I), wherein M1, M2, M3, a, b, c, d, e and x: M1: Na, K, Rb and/or Cs, M2: Mn, Mg, Ca, Ti, Co, Ni, Cr, V, M3: Si, S, a: 0.8-1.9, b: 0-0.3, c: 0-0.9, d: 0.8-1.9, e: 0-0.5, x: 1.Type: ApplicationFiled: December 8, 2014Publication date: April 2, 2015Applicant: BASF SEInventors: Hartmut HIBST, Brian Roberts, Jordan Keith Lampert, Kirill Bramnik
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Publication number: 20150093605Abstract: The present invention relates to zinc electrode and to methods of producing zinc electrode and particularly to a method of producing zinc electrode providing dimensional/geometrical stability during a battery charge/discharge operation. The invention provides methods of use of batteries comprising the zinc electrode of this invention. Applications of batteries of this invention include electric vehicles, portable electronics and drones.Type: ApplicationFiled: March 13, 2013Publication date: April 2, 2015Inventors: Ernst Khasin, Dekel Tzidon
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Publication number: 20150090929Abstract: A lithium-ion secondary battery 100 includes a positive electrode current collector 221 and a porous positive electrode active material layer 223 retained by the positive electrode current collector 221. The positive electrode active material layer 223 contains, for example, positive electrode active material particles 610, an electrically conductive material 620, and a binder 630. In this lithium-ion secondary battery 100, the positive electrode active material particles 610 have a shell portion 612 constituted by a lithium transition metal oxide, a hollow portion 614 formed inside the shell portion 612, and a through hole 616 penetrating the shell portion 612. In the lithium-ion secondary battery 100, in the positive electrode active material layer 223 on average, the hollow portion 614 accounts for 23% or higher of an apparent sectional area of the positive electrode active material particles 610.Type: ApplicationFiled: December 11, 2014Publication date: April 2, 2015Applicant: Toyota Jidosha Kabushiki KaishaInventor: Hiroki Nagai
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Publication number: 20150090927Abstract: Disclosed are a cathode active material including a lithium transition metal oxide based on at least one transition metal selected from the group consisting of Ni, Mn and Co, wherein at least one hetero element selected from the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr, Bi, Zn and Zr is located at a surface portion of or inside the lithium transition metal oxide, and a secondary battery including the same. The cathode active material according to the present invention includes predetermined hetero elements at a surface thereof and therein, and, as such, a secondary battery based on the cathode active material may exhibit excellent high-speed charge characteristics and lifespan characteristics.Type: ApplicationFiled: December 3, 2014Publication date: April 2, 2015Applicant: LG CHEM, LTD.Inventors: Byung Chun Park, Seong Hoon Kang, Minsuk Kang, Wang Mo Jung, Ho Suk Shin, Sang Min Park, Geungi Min
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Publication number: 20150090928Abstract: Provided is a method for preparing the heat-treated mixture of an oxide powder (a) represented by Formula I and an oxide powder (b) represented by Formula II, LiCoO2 ??(I) LizMO2 ??(II) wherein 0.95<z<1.1; M=Ni1-x-yMnxCoy, 0<y<0.5, and a ratio of Mn to Ni (x/(1-x-y)) is in the range of 0.4 to 1.1, comprising mixing (i) a Co-containing precursor, (ii) an Mn—Ni-containing precursor, and (iii) optionally, an Li-containing precursor, and heat-treating the mixture at a temperature of more than 400° C. under an oxygen-containing atmosphere.Type: ApplicationFiled: December 10, 2014Publication date: April 2, 2015Applicant: LG CHEM, LTD.Inventors: Jens M. Paulsen, Hong-Kyu Park, Sun Sik Shin, Sinyoung Park, Hyeyun Cha
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Publication number: 20150090924Abstract: Disclosed are a cathode active material for lithium secondary batteries and a lithium secondary battery including the same and, more particularly, the present invention relates to a cathode active material for lithium secondary batteries that includes a mixture of an overlithiated transition metal oxide represented by Formula 1 below and a lithium composite transition metal oxide represented by Formula 2 below: Li1+aNibMncCo1-(a+b+c+d)MdO2-sAs??(1) LiNixMnyCo1-(x+y+z)M?zO2-tA?t??(2) wherein 0.1?a?0.2, 0.1?b?0.4, 0.3?c?0.7, 0?d?0.1, 0.5?x?0.8, 0.1?y?0.4, 0?z?0.1, 0?s?0.2, and 0?t?0.2; M and M? are each independently at least one divalent or trivalent metal; and A and A? are each independently at least one monovalent or divalent anion.Type: ApplicationFiled: September 24, 2014Publication date: April 2, 2015Applicant: LG Chem, Ltd.Inventors: Hyeokmoo Lee, Song Taek Oh, Su Rim Lee, JungSeok Choi, Ji Hye Park
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Publication number: 20150090926Abstract: Disclosed are a transition metal precursor for preparing a lithium composite transition metal oxide, a method for preparing the precursor, and a lithium composite transition metal oxide. The transition metal precursor includes a composite transition metal compound having a composition represented by Formula (1) and a Mn content of 60 to 85 mol %: NiaMbMn1-(a+b)(OH1-x)2??(1) where M is at least one selected from the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn and period II transition metals, 0.15?a?0.3, 0?b?0.1 and 0<x<0.5. The lithium composite transition metal oxide has a composition represented by Formula (2) and a Mn content of 60 to 85 mol %: Li1+z[NiaMbMn1-(a+b)]2O4-yAy??(2) where M is at least one selected from the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr and period II transition metals, A is a monoanion or dianion, 0.15?a?0.3, 0.005?b?0.1, ?0.1?z?0.1 and 0?y?0.1.Type: ApplicationFiled: December 3, 2014Publication date: April 2, 2015Applicant: LG Chem, Ltd.Inventors: Byung Chun Park, Seong Hoon Kang, Minsuk Kang, Wang Mo Jung, Ho Suk Shin, Sang Min Park, Geungi Min
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Publication number: 20150093640Abstract: An electrode material that is used as an electrode in an electric double layer capacitor, a lithium ion capacitor, and a lithium secondary battery and has a reduced internal resistance for improving output is provided. The electrode material is characterized in that a metal is filled into pores in a surface portion at one surface of a powder molded body containing at least an active material powder and a metal film is formed on the one surface. The electrode material can be formed by performing a plating treatment on the powder molded body.Type: ApplicationFiled: March 19, 2013Publication date: April 2, 2015Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Masatoshi Majima, Akihisa Hosoe, Junichi Nishimura, Kazuki Okuno, Kotaro Kimura, Kengo Goto, Hideaki Sakaida
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Publication number: 20150089797Abstract: A doped spinel comprising the formula: Li1±wMe1vMe2x-vMn2-x-yTiyO4-zFz where, 0?w<1, 0.3<x?0.7, 0.3?v<0.7, x>v, 0.0001?y?0.35, and 0.0001?z?0.3. Me1 is a metal selected from a group of elements consisting of Cr, Fe, Co, Ni, Cu, and Zn. Me2 is a metal selected from a group of elements consisting of Ni, Fe, Co, Mg, Cr, V, Ru, Mg, Al, Zn, Cu, Cd, Ag, Y, Sc, Ga, In, As, Sb, Pt, Au, and B.Type: ApplicationFiled: March 28, 2013Publication date: April 2, 2015Inventors: Joachim Binder, Sven Glatthaar, Melanie Schroeder
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Publication number: 20150090925Abstract: Disclosed are a cathode active material for high voltage lithium secondary batteries and a lithium secondary battery including the same and, more particularly, the present invention relates to a cathode active material for lithium secondary batteries that includes a lithium transition metal oxide having a lithium molar fraction of greater than 1, containing a relative excess of nickel, and having a composition represented by Formula 1 below, wherein the lithium transition metal oxide has a Li2MnO3-like structure phase: Li1+aNibCocMn1?(a+b+c+d)MdO2-tAt ??(1) wherein 0.05?a?0.2, 0.4?b?0.7, 0.1?c?0.4, 0?d?0.1, and 0?t<0.2; M is at least one divalent or trivalent metal; and A is at least one monovalent or divalent anion.Type: ApplicationFiled: September 24, 2014Publication date: April 2, 2015Applicant: LG Chem, Ltd.Inventors: Hyeokmoo Lee, Jae Hyun Lee, Su Rim Lee, Song Taek Oh, JungSeok Choi, Ji Hye Park
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Publication number: 20150093642Abstract: Anode active materials, anodes, and batteries are provided. In one embodiment, an anode active material includes particles consisting essentially of a material selected from the group consisting of silicon and an alloy of silicon. An average degree of circularity of the particles is 90% or less.Type: ApplicationFiled: December 11, 2014Publication date: April 2, 2015Inventors: Kenichi Kawase, Tomoo Takada, Kensuke Yamamoto
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Patent number: 8993165Abstract: 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: GrantFiled: March 27, 2014Date of Patent: March 31, 2015Assignee: Southwest Research InstituteInventors: Michael A. Miller, Kwai S. Chan, Wuwei Liang, Candace K. Chan
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Patent number: 8992795Abstract: In a manufacturing process of a positive electrode active material for a power storage device, which includes a lithium silicate compound represented by a general formula Li2MSiO4, heat treatment is performed at a high temperature on a mixture material, grinding treatment is performed, a carbon-based material is added, and then heat treatment is performed again. Therefore, the reactivity between the substances contained in the mixture material is enhanced, favorable crystallinity can be obtained, and further microparticulation of the grain size of crystal which is grown larger by the high temperature treatment and crystallinity recovery are achieved; and at the same time, carbon can be supported on the surfaces of particles of the crystallized mixture material. Accordingly, a positive electrode active material for a power storage device, in which electron conductivity is improved, can be manufactured.Type: GrantFiled: October 14, 2011Date of Patent: March 31, 2015Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Masaki Yamakaji, Koji Nara, Mako Motoyoshi
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Patent number: 8993168Abstract: Disclosed is a powder comprising a lithium-containing compound and a nickel-containing mixed metal compound, and satisfying the following requirements of (1) and (2) when the powder is analyzed by plasma emission spectrometry of particles: (1) an absolute deviation of a synchronous distribution chart against an approximated straight-line is 0.10 or less, wherein the approximated straight-line is evaluated from a synchronous distribution chart obtained by plotting an emission intensity of lithium and an emission intensity of nickel of each particle composing of the powder, and (2) a release rate of lithium evaluated by the following formula is 80 or less: Release rate of lithium=(nb/na)×100 wherein, na is the number of particles containing lithium in the powder, and nb is the number of particles containing lithium and not containing nickel in the powder.Type: GrantFiled: June 3, 2010Date of Patent: March 31, 2015Assignee: Sumitomo Chemical Company, LimitedInventors: Satoshi Shimano, Kensaku Horie, Toshinori Isobe
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Patent number: 8992794Abstract: A method for preparing a layered oxide cathode using a two step calcination procedure, wherein the first step includes pre-calcination utilizing a rotary calciner.Type: GrantFiled: June 24, 2011Date of Patent: March 31, 2015Assignee: BASF CorporationInventors: Ivan Petrovic, Anthony Thurston, Stephen Sheargold
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Publication number: 20150086871Abstract: Methods for producing nanostructures from copper-based catalysts on porous substrates, particularly silicon nanowires on carbon-based substrates for use as battery active materials, are provided. Related compositions are also described. In addition, novel methods for production of copper-based catalyst particles are provided. Methods for producing nanostructures from catalyst particles that comprise a gold shell and a core that does not include gold are also provided.Type: ApplicationFiled: July 24, 2012Publication date: March 26, 2015Applicant: ONED MATERIAL LLCInventors: Wanqing Cao, Virginia Robbins
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Publication number: 20150086839Abstract: According to one embodiment, there is provided an active substance. The active substance includes secondary particles and a carbon material phase formed on at least a part of a surface of each of the secondary particles. Each of the secondary particles is constructed by aggregated primary particles of an active material. The primary particles of the active material includes a niobium composite oxide represented by LixM(1-y)NbyNb2O(7+?), wherein M is at least one selected from the group consisting of Ti and Zr, and x, y, and ? respectively satisfy 0?x?6, 0?y?1, and ?1???1. The secondary particles have a compression fracture strength of 10 MPa or more.Type: ApplicationFiled: September 22, 2014Publication date: March 26, 2015Applicant: Kabushiki Kaisha ToshibaInventors: Hiroki INAGAKI, Yasuhiro HARADA, Yorikazu YOSHIDA, Kazuki ISE, Norio TAKAMI
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Publication number: 20150086859Abstract: A cathode active material for a magnesium secondary battery, the cathode active material including a composite transition metal oxide which is expressed by Chemical Formula 1 and intercalates and deintercalates magnesium: MgxMa1-yMbyO2+d??Chemical Formula 1 wherein 0?x?1, 0.05?y<0.5, and ?0.3?d<1, and Ma and Mb are each independently a metal selected from the group consisting of Groups 5 to 12 of the Periodic Table.Type: ApplicationFiled: January 8, 2014Publication date: March 26, 2015Applicant: Samsung Electronics Co., Ltd.Inventors: Won-seok CHANG, Seok-soo LEE, Ju-sik KIM, Jae-myung LEE, Dong-wook HAN
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Patent number: 8986889Abstract: A positive active material for a lithium secondary battery comprises a core comprising a compound that can reversibly intercalate and deintercalate lithium; and a compound attached to the surface of the core and represented by Chemical Formula 1: Li1+xM(I)xM(II)2?xSiyP3?yO12,??[Chemical Formula 1] wherein M(I) and M(II) are selected from the group consisting of Al, Zr, Hf, Ti, Ge, Sn, Cr, Nb, Ga, Fe, Sc, In, Y, La, Lu, and Mg, and 0<x?0.7, 0?y?1.Type: GrantFiled: November 16, 2011Date of Patent: March 24, 2015Assignee: Samsung SDI Co., Ltd.Inventors: Joon-Hyung Lee, Andriy Kvasha, Oleg Levin
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Patent number: 8986571Abstract: The present invention aims to provide lithium composite compound particles which can exhibit good cycle characteristics and an excellent high-temperature storage property when used as a positive electrode active substance of a secondary battery, and a secondary battery using the lithium composite compound particles. The present invention relates to lithium composite compound particles having a composition represented by the compositional formula: Li1+xNi1?y?z?aCoyMnzMaO2, in which the lithium composite compound particles have an ionic strength ratio A (LiO?/NiO2?) of not more than 0.5 and an ionic strength ratio B (Li3CO3+/Ni+) of not more than 20 as measured on a surface of the respective lithium composite compound particles using a time-of-flight secondary ion mass spectrometer.Type: GrantFiled: June 8, 2011Date of Patent: March 24, 2015Assignee: Toda Kogyo CorporationInventors: Hiroyasu Watanabe, Kazutoshi Ishizaki, Taiki Imahashi, Satoshi Nakamura, Osamu Sasaki
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Patent number: 8986570Abstract: The present invention discloses a method for producing a positive electrode active material for a lithium secondary battery constituted by a lithium-nickel-cobalt-manganese complex oxide with a lamellar structure, the method including: (1) a step of preparing a starting source material for producing the complex oxide including a lithium supply source, a nickel supply source, a cobalt supply source, and a manganese supply source; (2) a step of pre-firing the starting source material by heating at a pre-firing temperature that has been set to a temperature lower than 800° C. and higher than a melting temperature of the lithium supply source; and (3) a step of firing the pre-fired material obtained in the pre-firing step by raising a temperature to a temperature range higher than the pre-firing temperature.Type: GrantFiled: December 14, 2009Date of Patent: March 24, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroki Nagai, Hidekazu Hiratsuka
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Publication number: 20150076399Abstract: Providing a negative-electrode active material for nonaqueous-electrolyte secondary battery, the negative-electrode active material enabling an output characteristic to upgrade, a production process for the same, a negative electrode for nonaqueous-electrolyte secondary battery, and a nonaqueous-electrolyte secondary battery. The negative-electrode active material includes an Si-metal-carbon composite composed of: a metal/carbon composite matrix including at least one metal selected from the group consisting of Cu, Fe, Ni, Ti, Nb, Zn, In and Sn, at least one member selected from the group consisting of N, O, P and S, and amorphous carbon; and nanometer-size Si particles dispersed in the metal/carbon composite matrix.Type: ApplicationFiled: April 10, 2013Publication date: March 19, 2015Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Yusuke Sugiyama, Tomohiro Niimi, Masataka Nakanishi, Hirotaka Sone, Kazuhito Kawasumi, Masakazu Murase
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Publication number: 20150079465Abstract: A composite cathode active material including a lithium metal oxide including an oxide Formula 1 and sulfur, xLi2MnO3.(1?x?y)LiMO2.yLiMn2O4??(1) wherein 0<x<0.6, 0<y<0.1, and M is at least one selected from a metal and a metalloid.Type: ApplicationFiled: September 15, 2014Publication date: March 19, 2015Inventors: Byung-jin CHOI, Yoon-sok KANG, Jin-hwan PARK, Jae-gu YOON, Myung-hoon KIM, Jun-young MUN, Jun-ho PARK, Sung-jin AHN
