Alkalated Transition Metal Chalcogenide Component Is Active Material Patents (Class 429/231.1)
  • Publication number: 20150118563
    Abstract: The present invention discloses a lithium-rich positive electrode material, a lithium battery positive electrode, and a lithium battery. The lithium-rich positive electrode material has a coating structure, where a general structural formula of a core of the coating structure is as follows: z[xLi2MO3·(1?x)LiMeO2]·(1?z)Li1+dMy2?dO, where in the formula, 0<x<1, 0<z<1, and 0<d<?; M is at least one of Mn, Ti, Zr, and Cr, Me is at least one of Mn, Co, Ni, Ti, Cr, V, Fe, Al, Mg, and Zr, and My is at least one of Mn, Ni, and Co; and a coating layer of the coating structure is a compound whose general formula is MmMz, where in the formula, Mm is at least one of Zn, Ti, Zr, and Al, and Mz is O or F. The lithium battery positive electrode and the lithium battery both include the lithium-rich positive electrode material.
    Type: Application
    Filed: December 31, 2014
    Publication date: April 30, 2015
    Inventor: Chaohui Chen
  • Patent number: 9017873
    Abstract: A lithium titanate composite material includes a lithium titanate particle and a double layered structure coated on a surface of the lithium titanate particle. The double layered structure includes a carbon layer directly disposed on the surface of the lithium titanate particle, and an AlPO4 layer disposed on an outer surface of the carbon layer. The lithium titanate composite material, as an anode active material, can be applied to a lithium ion battery to increase its electrochemical stability.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: April 28, 2015
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Xian-Kun Huang, Xiang-Ming He, Chang-Yin Jiang, Dan Wang, Jian Gao, Jian-Jun Li
  • Patent number: 9017872
    Abstract: A lithium titanate composite material includes lithium titanate particles and an AlPO4/C composite layer disposed on a surface of the lithium titanate particles. The AlPO4/C composite layer includes aluminum phosphate and carbon. The lithium titanate composite material, as an anode active material, can be applied to a lithium ion battery to increase its electrochemical stability.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: April 28, 2015
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Xian-Kun Huang, Xiang-Ming He, Chang-Yin Jiang, Dan Wang, Jian Gao, Jian-Jun Li
  • Publication number: 20150111104
    Abstract: A method is described for manufacturing a lithium-sulfur cell or lithium-sulfur battery, in particular a solid-state lithium-sulfur cell or lithium-sulfur battery. A nanowire network is provided in a method step a) composed of an electron- and lithium ion-conducting ceramic mixed conductor or a mixed conductor precursor for forming an electron- and lithium ion-conducting ceramic mixed conductor. The nanowire network is coated with a lithium ion-conducting solid-state electrolyte layer in a method step b). The nanowire network is optionally infiltrated with sulfur in a method step c). A cathode current arrester is applied to the uncoated side of the nanowire network in a method step d). Moreover, a lithium-sulfur cell, a lithium-sulfur battery, and a mobile or stationary system are described as well.
    Type: Application
    Filed: March 5, 2013
    Publication date: April 23, 2015
    Applicant: Robert Bosch GmbH
    Inventors: Christine Engel, Ulrich Eisele, Andre Moc
  • Publication number: 20150111097
    Abstract: 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: Application
    Filed: October 21, 2014
    Publication date: April 23, 2015
    Inventors: Kwang-jin PARK, Dong-wook HAN, Hyun-jin KIM, Seok-soo LEE, Won-seok CHANG
  • Patent number: 9005813
    Abstract: A negative electrode active material, a method of preparing the negative electrode active material and a lithium secondary battery including the negative electrode active material are disclosed. A negative electrode active material includes a lithium titanate, wherein a portion of lithium of the lithium titanate is substituted by at least one selected from the group consisting of Sr, Ba, a mixture thereof and an alloy thereof, and thus a lithium secondary battery including the negative electrode active material may improve high-rate discharge characteristics.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: April 14, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jong-Hee Lee, Yong-Mi Yu, Joa-Young Jeong, Jae-Myung Kim
  • Publication number: 20150099160
    Abstract: According to one embodiment, a negative electrode active material for nonaqueous electrolyte battery includes a titanium oxide compound having a crystal structure of monoclinic titanium dioxide. When a monoclinic titanium dioxide is used as the active material, the effective capacity is significantly lower than the theoretical capacity though the theoretical capacity was about 330 mAh/g. The invention comprises a titanium oxide compound which has a crystal structure of monoclinic titanium dioxide and a (001) plane spacing of 6.22 ? or more in the powder X-ray diffraction method using a Cu-K? radiation source, thereby making an attempt to improve effective capacity.
    Type: Application
    Filed: December 16, 2014
    Publication date: April 9, 2015
    Inventors: Yasuhiro HARADA, Norio TAKAMI, Hiroki INAGAKI, Keigo HOSHINA
  • Publication number: 20150099177
    Abstract: A nonaqueous electrolyte secondary battery disclosed in the present application includes: a positive electrode capable of absorbing and releasing lithium, containing a positive electrode active material composed of a lithium-containing transition metal oxide having a layered crystalline structure; and a negative electrode capable of absorbing and releasing lithium, containing a negative electrode active material composed of a lithium-containing transition metal oxide obtained by substituting some of Ti element of a lithium-containing titanium oxide having a spinel crystalline structure with one or more element different from Ti, wherein a retention of the negative electrode is set to be greater than a retention of the positive electrode, and an irreversible capacity rate of the negative electrode is set to be greater than an irreversible capacity rate of the positive electrode, whereby a discharge ends by negative electrode limitation.
    Type: Application
    Filed: October 23, 2014
    Publication date: April 9, 2015
    Inventors: Natsumi GOTO, Takashi TAKEUCHI, Masaki HASEGAWA
  • Patent number: 8999579
    Abstract: An anode includes a collector; and an anode active material layer disposed on the collector comprises an anode active material, which is lithium oxide coated Li4Ti5O12, a conductive material, and a binder, wherein the lithium oxide intercalates and/or deintercalates lithium ions into and from the lattice structure of Li4Ti5O12. By coating the surface of the anode active material with lithium oxide, an anode including the surface-treated anode active material has a high capacity, high-rate properties, and a high initial efficiency.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: April 7, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Joung-won Park, Yoon-sok Kang, Han-su Kim, Jae-gu Yoon, Gue-sung Kim
  • Publication number: 20150093646
    Abstract: A positive-electrode active material for a non-aqueous electrolyte secondary battery according to the present disclosure contains a layered lithium(Li)-containing transition metal composite oxide that contains Li in the transition metal layer and more than 0.4 ?mol/g and less than 25 ?mol/g of iodine (I) or bromine (Br).
    Type: Application
    Filed: September 18, 2014
    Publication date: April 2, 2015
    Inventor: HIROSHI KAWADA
  • Patent number: 8993167
    Abstract: Provided is a cathode active material composed of lithium nickel oxide represented by Formula 1, wherein the lithium nickel oxide contains nickel in an amount of 40% or higher, based on the total weight of transition metals, and the cathode active material comprises a first coating layer provided on the surface thereof and a second coating layer provided on the surface of the first coating layer, wherein the first coating layer is composed of a non-reactive material selected from the group consisting of oxides, nitrides, sulfides and mixtures or complexes thereof and the second coating layer is composed of a carbon-based material.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: March 31, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Sung kyun Chang, Hong-Kyu Park, Sinyoung Park
  • Publication number: 20150086841
    Abstract: According to one embodiment, a nonaqueous electrolyte battery including a positive electrode, a negative electrode, a separator, a copper-containing member, and a nonaqueous electrolyte is provided. The negative electrode includes a negative electrode current collector and a negative electrode active material-containing layer. The negative electrode current collector includes aluminum or aluminum alloy. The negative electrode active material-containing layer is formed on the negative electrode current collector. The copper-containing member includes copper or copper alloy. The copper-containing member is electrically connected to the negative electrode current collector to prevent from over-discharge.
    Type: Application
    Filed: September 18, 2014
    Publication date: March 26, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Norio TAKAMI, Hiroki INAGAKI, Wen ZHANG
  • Publication number: 20150086839
    Abstract: 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: Application
    Filed: September 22, 2014
    Publication date: March 26, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hiroki INAGAKI, Yasuhiro HARADA, Yorikazu YOSHIDA, Kazuki ISE, Norio TAKAMI
  • Patent number: 8986884
    Abstract: A lithium-ion secondary battery comprising a positive electrode and a negative electrode is provided. The positive electrode comprises as a positive electrode active material a lithium transition metal composite oxide having a layered structure. The composite oxide contains as its metal components at least one species of Ni, Co and Mn as well as W and Ca. The composite oxide contains 0.26 mol % or more, but 5 mol % or less of W and Ca combined when all the metal elements contained in the oxide excluding lithium account for a total of 100 mol %, with the ratio (mW/mCa) of the number of moles of W contained, mW, to the number of moles of Ca contained, mCa, being 2.0 or larger, but 50 or smaller.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: March 24, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hiroki Nagai
  • Patent number: 8986886
    Abstract: A positive active material, a method of preparing the same, and a lithium battery including the same.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: March 24, 2015
    Assignee: Samsung SDI Co., Ltd
    Inventors: Do-Hyung Park, Chang-Hyuk Kim, Ji-Hyun Kim, Jeong-Seop Lee, Min-Han Kim, Seon-Young Kwon, Yoon-Chang Kim
  • Patent number: 8986570
    Abstract: 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: Grant
    Filed: December 14, 2009
    Date of Patent: March 24, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroki Nagai, Hidekazu Hiratsuka
  • Patent number: 8986885
    Abstract: An object of the present invention is to provide a lithium ion battery which is excellent in properties at large current and can be applied to applications requiring high output power even when the mixture layers are made thick. The present invention provides a lithium ion battery including a positive electrode including a positive electrode mixture layer formed on a current collector, a negative electrode including a negative electrode mixture layer formed on a current collector and an electrolyte, the positive electrode and the negative electrode being disposed through the intermediary of a separator, wherein the positive electrode includes as a positive electrode active material a lithium composite oxide represented by LiNiaMnbCOcMdO2 (in the formula, M is at least one selected from the group consisting of Fe, V, Ti, Cu, Al, Sn, Zn, Mg, B and W, a+b+c+d=1, 0.2?a?0.8, 0.1?b?0.4, 0?c?0.4 and 0?d?0.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: March 24, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Akihide Tanaka, Etsuko Nishimura
  • Publication number: 20150079470
    Abstract: According to one embodiment, there is provided a nonaqueous electrolyte battery. The nonaqueous electrolyte battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode includes a positive current collector and a positive electrode material layer formed on the positive electrode current collector. The positive electrode material layer includes a positive electrode active material and a first conductive agent. In a mapping image for the positive electrode material layer, a ratio of an occupancy area of the first conductive agent to an occupancy area of the positive electrode active material is from 1.5 to 5.
    Type: Application
    Filed: September 5, 2014
    Publication date: March 19, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tetsuro KANO, Hikaru YOSHIKAWA, Hidesato SARUWATARI, Kazuya KURIYAMA
  • Publication number: 20150072232
    Abstract: In a lithium-ion secondary battery (100), positive electrode active material particles (610) each include a shell portion (612) made 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). A positive electrode active material layer (223) has a density A of 1.80 g/cm3?A?2.35 g/cm3, and a negative electrode active material layer (243) has a density B of 0.95 g/cm3?B?1.25 g/cm3.
    Type: Application
    Filed: March 30, 2012
    Publication date: March 12, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroki Nagai
  • Patent number: 8974963
    Abstract: A lithium secondary battery includes: a positive electrode that contains a positive electrode active material; a negative electrode; and a nonaqueous electrolyte. The positive electrode active material is amorphous and is expressed by LixA[PaM1-a]yOz where, in the formula, A is Mn or Ni; M is a glass former element having an electronegativity lower than P; and x, y, a and z respectively satisfy 1<x?2.5, 0<y?3, 0?a<1 and z=(x+(valence of A)+(valence of P)×a×y+(valence of M)×(1?a)×y)/2.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: March 10, 2015
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kyushu University, National University Corporation
    Inventors: Motoshi Isono, Shigeto Okada, Jun-ichi Yamaki
  • Patent number: 8974970
    Abstract: 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: Grant
    Filed: June 19, 2014
    Date of Patent: March 10, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Kyun Chang, Hong-Kyu Park, Sinyoung Park, Hyo-shik Kil, Hera Lee
  • Publication number: 20150064556
    Abstract: An electrode for a rechargeable battery and a rechargeable battery, the electrode including a current collector; an electrode active material layer; and an electrolyte solution impregnation layer, wherein the electrolyte solution impregnation layer includes a metal oxide and a conductive material.
    Type: Application
    Filed: January 17, 2014
    Publication date: March 5, 2015
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Jin-Hyon LEE, Ju-Hee SOHN, Jung-Yeon WON, Eun-Young GOH, Jong-Ki LEE, Sang-In PARK
  • Publication number: 20150064577
    Abstract: A lithium ion secondary battery includes a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte, wherein the positive electrode contains, as a positive electrode active material, a lithium-containing transition metal compound that belongs to space group Fd3-m and that contains lithium and transition metal M (M represents Mo, or Mo and at least one selected from the group consisting of Mn, Co, Ni, W, and V), a molar ratio of the lithium to the transition metal M is 2.7 or more and 3.3 or less, and a ratio of a mass of the lithium-containing transition metal compound to a total mass of the positive electrode active material in the positive electrode is 0.8 or more.
    Type: Application
    Filed: August 1, 2014
    Publication date: March 5, 2015
    Inventors: RYUICHI NATSUI, KENSUKE NAKURA
  • Publication number: 20150056512
    Abstract: An object is to provide a positive electrode for a non-aqueous electrolyte secondary battery and a non-aqueous electrolyte secondary battery that allow a high output characteristic. Included are a positive electrode collector and a positive electrode mixture layer formed on at least one surface of the positive electrode collector. The positive electrode mixture layer contains particles 3 of lithium nickel cobalt manganese oxide represented by LiNi0.55Co0.20Mn0.25O2, erbium oxyhydroxide 1 fixed on the surfaces of the particles of the lithium nickel cobalt manganese oxide 3, tungsten trioxide 2 adhering to the surfaces of the particles of the lithium nickel cobalt manganese oxide 3, and a binder.
    Type: Application
    Filed: January 31, 2013
    Publication date: February 26, 2015
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Masanobu Takeuchi, Manabu Takijiri, Katsunori Yanagida, Junichi Sugaya, Takeshi Ogasawara
  • Publication number: 20150056511
    Abstract: To provide a cathode active material for a lithium ion secondary battery, which has high packing properties and high volume capacity density, and a method for its production.
    Type: Application
    Filed: November 5, 2014
    Publication date: February 26, 2015
    Applicant: AGC SEIMI CHEMICAL CO., LTD.
    Inventors: Satoshi TAKAMATSU, Yukimitsu WAKASUGI, Megumi UCHIDA
  • Publication number: 20150056493
    Abstract: An example of a porous separator includes an untreated porous polymer membrane, and a nanocomposite structure i) formed on a surface of the porous polymer membrane, or ii) dispersed in pores of the porous polymer membrane, or iii) combinations of i and ii. The nanocomposite structure is selected from the group consisting of a carbon nanocomposite structure, a metal oxide nanocomposite structure, and a mixed carbon and metal oxide nanocomposite structure.
    Type: Application
    Filed: September 13, 2013
    Publication date: February 26, 2015
    Applicant: GM Global Technology Operations LLC
    Inventors: Gayatri Vyas Dadheech, Li Yang, Mei Cai
  • Publication number: 20150050557
    Abstract: A negative electrode active material for a sodium-ion battery includes a Li4Ti5O12 phase. A BET specific surface area is equal to or greater than 153 m2/g, and a crystallite size is equal to or smaller than 69 ?.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 19, 2015
    Inventor: Hideki Nakayama
  • Publication number: 20150044565
    Abstract: The present invention provides a process for producing a graphene-enhanced anode active material for use in a lithium battery. The process comprises (a) providing a continuous film of a graphene material into a deposition zone; (b) introducing vapor or atoms of a precursor anode active material into the deposition zone, allowing the vapor or atoms to deposit onto a surface of the graphene material film to form a sheet of an anode active material-coated graphene material; and (c) mechanically breaking this sheet into multiple pieces of anode active material-coated graphene; wherein the graphene material is in an amount of from 0.1% to 99.5% by weight and the anode active material is in an amount of at least 0.5% by weight, all based on the total weight of the graphene material and the anode active material combined.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 12, 2015
    Inventors: Yanbo Wang, Bor Z. Jang, Hui He, Aruna Zhamu
  • Publication number: 20150044576
    Abstract: An all-solid-state cell, which includes a lithium-containing anode, a cathode and a lithium ions-conducting solid-state electrolyte separator situated between the anode and the cathode. To improve the safety and cycle stability of the cell, the cathode includes a composite material including at least one lithium titanate and at least one lithium ions-conducting solid-state electrolyte. Furthermore, the invention relates to a corresponding all-solid-state battery and a mobile or stationary system equipped with it.
    Type: Application
    Filed: January 24, 2013
    Publication date: February 12, 2015
    Applicant: Robert Bosch GmbH
    Inventors: Ulrich Eisele, Alan Logeat, Hideki Ogihara
  • Publication number: 20150044556
    Abstract: The present invention provides a cathode (positive electrode) of a lithium battery and a process for producing this cathode. The electrode comprises a cathode active material-coated graphene sheet and the graphene sheet has two opposed parallel surfaces, wherein at least 50% area (preferably >80%) of one of the two surfaces is coated with a cathode active material coating. The graphene material is in an amount of from 0.1% to 99.5% by weight and the cathode active material is in an amount of at least 0.5% by weight (preferably >80% and more preferably >90%), all based on the total weight of the graphene material and the cathode active material combined. The cathode active material is preferably an inorganic material, an organic or polymeric material, a metal oxide/phosphate/sulfide, or a combination thereof. The invention also provides a lithium battery, including a lithium-ion, lithium-metal, or lithium-sulfur battery.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 12, 2015
    Inventors: Yanbo Wang, Bor Z. Jang, Hui He, Aruna Zhamu
  • Publication number: 20150044568
    Abstract: A method for manufacturing lithium titanate (Li4Ti5O12) of a substantially single phase, which is excellent in rate performance, and can be easily handled. The lithium titanate (Li4Ti5O12) is prepared from substantially a raw material powder consisting of a lithium compound and a raw material powder consisting of a titanic acid compound which are mixed and the resultant mixture is calcined. A lithium carbonate is used as the lithium compound and metatitanic acid or orthotitanic acid is used as the titanic acid compound. The penetration speed coefficient of the lithium titanate obtained, to a nonaqueous electrolyte is larger than a penetration speed coefficient of lithium titanate, obtained by using a lithium hydroxide as the lithium compound, to the same nonaqueous electrolyte. The specific surface area of the lithium titanate obtained is 10 m2/g or less.
    Type: Application
    Filed: March 14, 2013
    Publication date: February 12, 2015
    Applicant: TAYCA CORPORATION
    Inventors: Keiichi Watanabe, Shuji Nishida
  • Publication number: 20150044564
    Abstract: The present invention provides an anode electrode of a lithium-ion battery, comprising an anode active material-coated graphene sheet, wherein the graphene sheet has two opposed parallel surfaces and at least 50% area of one of the surfaces is coated with an anode active material and wherein the graphene material is in an amount of from 0.1% to 99.5% by weight and the anode active material is in an amount of at least 0.5% by weight (preferably at least 60%), all based on the total weight of the graphene material and the anode active material combined.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 12, 2015
    Inventors: Yanbo Wang, Bor Z. Jang, Hui He, Aruna Zhamu
  • Patent number: 8951448
    Abstract: A cathode material for a lithium secondary battery capable of stably suppressing manganese dissolution even under high temperature and voltage conditions is provided. Further, by using the cathode material for a lithium secondary battery, a lithium secondary battery excellent in a charge/discharge cycle profile at a high temperature and a secondary battery module equipped with the battery are provided. The cathode material for a lithium secondary battery comprises a lithium manganese composite oxide and a coating layer formed on the surface of the lithium manganese composite oxide. The coating layer includes an oxide compound or a fluoride compound each containing M (wherein, M is at least one element selected from the group of Mg, Al and Cu), and a phosphorous compound. An atomic density of M at the side of the lithium manganese composite oxide in the coating layer is higher than an atomic density of M at the side of a surface layer of the coating layer facing to the electrolyte.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: February 10, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuya Toyama, Kazushige Kohno
  • Publication number: 20150037689
    Abstract: Provided is a lithium secondary battery with three-dimensional network porous bodies as current collectors in which the internal resistance does not increase even after repeated charging and discharging. A lithium secondary battery including a positive electrode and a negative electrode each having as a current collector a three-dimensional network porous body, the positive electrode and the negative electrode being formed by filling at least an active material into pores of the three-dimensional network porous bodies, wherein the three-dimensional network porous body for the positive electrode is a three-dimensional network aluminum porous body having a hardness of 1.2 GPa or less, and the three-dimensional network porous body for the negative electrode is a three-dimensional network copper porous body having a hardness of 2.6 GPa or less.
    Type: Application
    Filed: February 22, 2013
    Publication date: February 5, 2015
    Inventors: Junichi Nishimura, Kazuhiro Gotou, Akihisa Hosoe, Kentarou Yoshida
  • Publication number: 20150037679
    Abstract: The invention relates to electrodes that contain active materials of the formula: AaMbXzOy wherein A is one or more alkali metals selected from lithium,sodium and potassium; M is selected from one or more transition metals and/or one or more non-transition metals and/or one or more metalloids; X comprises one or more atoms selected from niobium, antimony, tellurium, tantalum, bismuth and selenium; and further wherein 0<a?6; b is in the range: 0<b?4; x is in the range 0<x?1 and y is in the range 2?y?10. Such electrodes are useful in, for example, sodium and/or lithium ion battery applications.
    Type: Application
    Filed: March 21, 2013
    Publication date: February 5, 2015
    Inventors: Jeremy Barker, Richard Heap
  • Publication number: 20150030929
    Abstract: The invention relates to electrodes that contain active materials of the formula: NaaXbMcM?d(condensed polyanion)e(anion)f; where X is one or more of Na+, Li+ and K+; M is one or more transition metals; M? is one or more non-transition metals; and where a>b; c>0; d?0; e?1 and f?0. Such electrodes are useful in, for example, sodium ion battery applications.
    Type: Application
    Filed: September 25, 2012
    Publication date: January 29, 2015
    Inventor: Jeremy Barker
  • Patent number: 8940443
    Abstract: An electrolyte comprising an organic solvent, a lithium salt, and a polymer additive comprised of repeating vinyl units joined to one or more heterocyclic amine moieties is described. The heterocyclic amine contains five to ten ring atoms, inclusive. An electrochemical cell is also disclosed. The preferred cell comprises a negative electrode which intercalates with lithium, a positive electrode comprising an electrode active material which intercalates with lithium, and the electrolyte of the present invention activating the negative and the positive electrodes.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: January 27, 2015
    Assignee: Greatbatch Ltd.
    Inventor: Chi-Kyun Park
  • Publication number: 20150024280
    Abstract: In a battery production process, a positive electrode active material having a reaction-suppressing layer that does not easily peel off formed on the surface thereof, and a positive electrode and an all-solid-state battery that use said material are provided. The present invention involves positive electrode active material particles for an all-solid-state battery containing sulfide-based solid electrolyte. The positive electrode active material particles are an aggregate containing two or more particles. The surface of the aggregate is coated with a reaction-suppressing layer for suppressing reactions with the sulfide-based solid electrolyte.
    Type: Application
    Filed: May 23, 2011
    Publication date: January 22, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takayuki Uchiyama
  • Publication number: 20150024273
    Abstract: The present invention relates to lithium composite oxide particles which can be produced by mixing nickel-cobalt-manganese-based compound particles, a zirconium raw material and a lithium raw material with each other and then calcining the resulting mixture, and comprise a Zr compound that is allowed to be present on a surface thereof, in which the Zr compound is represented by the chemical formula: Lix(Zr1-yAy)Oz wherein x, y and z are 2.0?x?8.0; 0?y?1.0; and 2.0?z?6.0, respectively, and a content of Zr in the lithium composite oxide particles is 0.05 to 1.0% by weight. By using the lithium composite oxide particles as a positive electrode active substance, it is possible to produce a lithium ion secondary battery that has a low electric resistance at a high temperature, and is excellent in cycle characteristic at a high temperature as well as high-temperature rate characteristic.
    Type: Application
    Filed: March 14, 2013
    Publication date: January 22, 2015
    Inventors: Minoru Yamazaki, Osamu Sasaki, Shoichi Fujino, Hideharu Mitsui, Takayuki Yamamura, Kunihiro Uramatsu, Akihisa Kajiyama, Ryuta Masaki
  • Publication number: 20150017535
    Abstract: A cathode active material, a preparation method thereof, and a cathode for a lithium secondary battery and a lithium secondary battery including the cathode active material, wherein the cathode active material includes a core active material represented by Formula 1 below; and a coating layer formed on a surface of the core active material, the coating layer including lithium gallium oxide: Lia(A1-x-yBxCy)O2 ??Formula 1 In Formula 1, a, x, y, A, B, and C are defined in the detailed description.
    Type: Application
    Filed: November 19, 2013
    Publication date: January 15, 2015
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Ming-Zi Hong, Do-Hyung Park, Seon-Young Kwon, Joong-Ho Moon, Ji-Hyun Kim, Han-Eol Park, Min-Han Kim, Myong-A Woo, Ki-Hyun Kim, Sun-Ho Kang
  • Publication number: 20150017549
    Abstract: Provided an all-solid lithium secondary battery hardly gives rise to internal resistance even if charging and discharging are repeated. The all-solid lithium secondary battery including a positive electrode and a negative electrode, each of electrodes being an electrode in which a three-dimensional network porous body is used as a current collector and pores of the three-dimensional network porous body are filled with at least an active material, wherein the three-dimensional network porous body of the positive electrode includes an aluminum alloy with a Young's modulus of 70 GPa or higher and the three-dimensional network porous body of the negative electrode includes a copper alloy with a Young's modulus of 120 GPa or higher.
    Type: Application
    Filed: February 22, 2013
    Publication date: January 15, 2015
    Inventors: Junichi Nishimura, Kazuhiro Gotou, Akihisa Hosoe, Kentarou Yoshida
  • Publication number: 20150017500
    Abstract: The present disclosure provides a sheet-form electrode for a secondary battery, comprising a current collector; an electrode active material layer formed on one surface of the current collector; a conductive layer formed on the electrode active material layer and comprising a conductive material and a binder; and a first porous supporting layer formed on the conductive layer. The sheet-form electrode for a secondary battery according to the present disclosure has supporting layers on at least one surfaces thereof to exhibit surprisingly improved flexibility and prevent the release of the electrode active material layer from a current collector even if intense external forces are applied to the electrode, thereby preventing the decrease of battery capacity and improving the cycle life characteristic of the battery.
    Type: Application
    Filed: September 4, 2014
    Publication date: January 15, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Yo-Han Kwon, Hye-Ran Jung, Eun-Kyung Kim, Je-Young Kim, Hyo-Mi Kim
  • Publication number: 20150017536
    Abstract: Provided is a non-aqueous electrolyte secondary battery excellent in durability, the non-aqueous electrolyte secondary battery including a positive electrode active material, the surface of which is coated with a film formed of an inorganic solid electrolyte, wherein a change in volume of the positive electrode active material during charge and discharge is reduced to prevent deterioration of the film with which the surface of the positive electrode active material is coated. In a non-aqueous electrolyte secondary battery including a positive electrode active material, the surface of which is coated with a film formed of an inorganic solid electrolyte, the positive electrode active material is a lithium-containing composite oxide having a spinel structure, and contains at least one of Ti and Mg as an additional element.
    Type: Application
    Filed: March 9, 2012
    Publication date: January 15, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeshi Abe, Yoshitomo Takebayashi, Ippei Toyoshima
  • Publication number: 20150017527
    Abstract: The present invention relates to a negative electrode active material for a rechargeable lithium battery, a method for preparing the same, and a rechargeable lithium battery using the same, and provides a negative electrode active material for a rechargeable lithium battery of a carbon-metal complex or a mixture type, containing a carbon-based active material including a first ceramic coating layer, a metal-based active material or a metal-base active material including a first ceramic coating layer, and a carbon-based active material.
    Type: Application
    Filed: November 15, 2013
    Publication date: January 15, 2015
    Applicant: POSCO CHEMTECH CO., LTD.
    Inventors: Kyoung Muk LEE, Heon Young LEE, Mi Ryeong LEE, Eun Byeol HYEONG
  • Publication number: 20150017550
    Abstract: Provided are a current collector, an electrode, and a nonaqueous electrolyte secondary battery, each of which capable of reducing internal resistance and producing cost. More specifically, provided are: a three-dimensional network metal porous body for a current collector, comprising a sheet-shaped three-dimensional network metal porous body, wherein a degree of porosity of the sheet-shaped three-dimensional network metal porous body is 90% or more and 98% or less, and a 30%-cumulative pore diameter (D30) of the sheet-shaped three-dimensional network metal porous body calculated from a fine pore diameter measurement conducted by a bubble point method is 20 ?m or more and 100 ?m or less; an electrode using the three-dimensional network metal porous body; and a nonaqueous electrolyte secondary battery including the electrode.
    Type: Application
    Filed: February 22, 2013
    Publication date: January 15, 2015
    Inventors: Junichi Nishimura, Kazuhiro Gotou, Akihisa Hosoe, Kentarou Yoshida
  • Publication number: 20150017513
    Abstract: Disclosed are a novel compound, a method for preparing the same, and a lithium secondary battery comprising the same. More specifically, disclosed are a compound in which five MO6 octahedrons are bonded to one another around one MO6 octahedron such that the MO6 octahedrons share a vertex, to form hollows and Li cations substituted instead of Na cations using an ion substitution method are present in the hollows, and a crystal structure thereof is not varied even upon intercalation and deintercalation of Li cations, a method for preparing the same, and a lithium secondary battery comprising the same as a cathode active material.
    Type: Application
    Filed: September 30, 2014
    Publication date: January 15, 2015
    Applicant: LG CHEM, LTD.
    Inventors: YoungHwa JUNG, Youngsun CHOI, Seung-Tae HONG
  • Patent number: 8932480
    Abstract: The present invention provides a LiCoO2-containing powder comprising LiCoO2 having a stoichiometric composition via heat treatment of a lithium cobalt oxide and a lithium buffer material to make equilibrium of a lithium chemical potential there between; a lithium buffer material which acts as a Li acceptor or a Li donor to remove or supplement Li-excess or Li-deficiency, coexisting with a stoichiometric lithium metal oxide; and a method for preparing a LiCoO2-containing powder. Further, provided is an electrode comprising the above-mentioned LiCoO2-containing powder as an active material, and a rechargeable battery comprising the same electrode.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: January 13, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Jens M. Paulsen, Sun Sik Shin, Hong-Kyu Park
  • Patent number: 8932761
    Abstract: An anode wherein the anode active material layer includes anode active material particles made of an anode active material including at least one of silicon and tin as an element. An oxide-containing film including an oxide of at least one kind selected from the group consisting of silicon, germanium and tin is formed in a region in contact with an electrolytic solution of the surface of each anode active material particle. The region in contact with the electrolytic solution of the surface of each anode active material particle is covered with the oxide-containing film.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: January 13, 2015
    Assignee: Sony Corporation
    Inventors: Hiroyuki Yamaguchi, Hiroshi Horiuchi, Kenichi Kawase, Tadahiko Kubota, Hideki Nakai, Takakazu Hirose
  • Patent number: 8932768
    Abstract: A method of manufacture an article of a cathode (positive electrode) material for lithium batteries. The cathode material is a lithium molybdenum composite transition metal oxide material and is prepared by mixing in a solid state an intermediate molybdenum composite transition metal oxide and a lithium source. The mixture is thermally treated to obtain the lithium molybdenum composite transition metal oxide cathode material.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: January 13, 2015
    Assignee: UChicago Argonne, LLC
    Inventors: Sang-Ho Park, Khalil Amine
  • Patent number: 8932765
    Abstract: An object is to provide an electrode assembly for an electric storage device, such as a nonaqueous electrolyte cell, and an electric storage device that are capable of preventing increase of a short-circuit current at the time of occurrence of a short-circuit within a cell and have high safety. In order to achieve the object, provided is an electrode assembly for an electric storage device including a positive electrode, a negative electrode and a separator disposed between the positive electrode and the negative electrode, in which at least one of the positive electrode and the negative electrode includes a current collector, an active material layer formed on at least one face of the current collector, and an undercoat layer formed between the current collector and the active material layer and including an organic binder that evaporates and decomposes when heated to a predetermined temperature or more.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: January 13, 2015
    Assignee: GS Yuasa International Ltd.
    Inventors: Akihiko Miyazaki, Sumio Mori, Taro Yamafuku, Minoru Teshima