Having Utility As A Reactive Material In An Electrochemical Cell; E.g., Battery, Etc. Patents (Class 252/182.1)
  • Publication number: 20150079475
    Abstract: [Summary] A positive electrode active material is provided to contain: a solid solution lithium-containing transition metal oxide (A) represented by Li1.5[NiaCobMnc[Li]d]O3 (where a, b, c and d satisfy the relations of 0.1?d?0.4, a+b+c+d=1.5, and 1.1?a+b+c?1.4.); and a lithium-containing transition metal oxide (B) represented by Li1.0Nia?Cob?Mnc?O2 (where a?, b? and c? satisfy the relation of a?+b?+c?=1.0.).
    Type: Application
    Filed: March 6, 2013
    Publication date: March 19, 2015
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Shinji Yamamoto, Atsushi Ito
  • Patent number: 8980140
    Abstract: The present disclosure relates to a method for making an electrode composite material. In the method, a trivalent aluminum source, a doped element source, and electrode active material particles are provided. The trivalent aluminum source and the doped element source are dissolved in a solvent to form a solution having trivalent aluminum ions and doped ions. The electrode active material particles are mixed with the solution having the trivalent aluminum ions and doped ions to form a mixture. A phosphate radical containing solution is added to the mixture to react with the trivalent aluminum ions and doped ions, thereby forming a number of electrode composite material particles. The electrode composite material particles are heated.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: March 17, 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: 8980125
    Abstract: An active material for a nonaqueous electrolyte secondary battery includes first particles and second particles provided to coat the first particles so as to be scattered on the surfaces of the first particles. The circularity of the first particles coated with the second particles is 0.800 to 0.950, and the ratio r1/r2 of the average particle diameter r1 of the second particles to the average particle diameter r2 of the first particles is 1/20 to 1/2.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: March 17, 2015
    Assignee: Sony Corporation
    Inventor: Kazuaki Endoh
  • Patent number: 8980126
    Abstract: To provide a power storage device including an electrode material having a large capacity. First heat treatment is performed on a mixture of a compound containing lithium; a compound containing a metal element selected from manganese, iron, cobalt, and nickel; and a compound containing phosphorus. A cleaning step is performed on the mixture subjected to the first heat treatment. Second heat treatment is performed on the mixture subjected to the cleaning step, so that a lithium phosphate compound is produced. With the use of the lithium phosphate compound, an electrode is formed.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: March 17, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takahiro Kawakami, Shunpei Yamazaki
  • Patent number: 8980124
    Abstract: Aromatic compounds having a perfluoroalkyl group and a gelling agent for gelling an organic liquid which is composed of any one of them. This gelling agent can gel many kinds of organic liquids by adding a small amount thereof.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: March 17, 2015
    Assignee: National University Corporation Yamaguchi University
    Inventors: Hiroaki Okamoto, Yuki Morita
  • Publication number: 20150069293
    Abstract: Disclosed is a precursor for preparing a lithium composite transition metal oxide. More particularly, a transition metal precursor, including a composite transition metal compound represented by Formula 1 below, used to prepare a lithium transition metal oxide: NiaMbMn1?(a+b)(O1?x)2??(1) wherein M is at least one selected form the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn and Period II transition metals; and 0.2?a?0.25, 0?b?0.1, and 0<x<0.5.
    Type: Application
    Filed: November 14, 2014
    Publication date: March 12, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Byung Chun Park, Seong Hoon Kang, Minsuk Kang, Wang Mo Jung, Ho Suk Shin, Sang Min Park, Geungi Min
  • Publication number: 20150072238
    Abstract: Provided is an anode active material including a transition metal-pyrophosphate of Chemical Formula 1 below: M2P2O7??<Chemical Formula 1> where M is any one selected from the group consisting of titanium (Ti), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), ruthenium (Ru), palladium (Pd), and silver (Ag), or two or more elements thereof. Since the anode active material of the present invention is stable and has excellent conversion reactivity while including only transition metal and phosphate without using lithium in which the price thereof is continuously increased, the anode active material of the present invention may improve capacity characteristics.
    Type: Application
    Filed: November 13, 2014
    Publication date: March 12, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Sang Wook Woo, Ji Heon Ryu, Eun Kyung Kim, Je Young Kim, Sang Jo An, Min Young Hong
  • Publication number: 20150072237
    Abstract: Provided is an anode active material including a transition metal-metaphosphate of Chemical Formula 1: M(PO3)2??<Chemical Formula 1> where M is any one selected from the group consisting of titanium (Ti), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), ruthenium (Ru), palladium (Pd), and silver (Ag), or two or more elements thereof. Since the anode active material of the present invention is stable and has excellent conversion reactivity while including only transition metal and phosphate without using lithium in which the price thereof is continuously increased, the anode active material of the present invention may improve capacity characteristics.
    Type: Application
    Filed: November 13, 2014
    Publication date: March 12, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Sang Wook Woo, Ji Heon Ryu, Eun Kyung Kim, Je Young Kim, Sang Jo An, Min Young Hong
  • 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
  • Patent number: 8974957
    Abstract: Provided is a cathode active material having a composition represented by the following Formula I: LiFe(P1-XO4) (I) wherein a molar fraction (1?x) of phosphorus (P) is in the range of 0.910 to 0.999, to allow operational efficiency of the cathode active material to be leveled to a lower operational efficiency of an anode active material and improve energy density of the cathode active material. Furthermore, a cathode active material, wherein a molar fraction (1?x) of phosphorus (P) is lower than 1, contains both Fe2+ and Fe3+, thus advantageously preventing structural deformation, improving ionic conductivity, exhibiting superior rate properties and inhibiting IR drop upon charge/discharge, thereby imparting high energy density to batteries.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: March 10, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Sanghoon Choy, Yong Tae Lee, Hong-Kyu Park, Soo Min Park, Hyo-shik Kil, Cheol-Hee Park, Ji Eun Lee
  • Patent number: 8974960
    Abstract: The present disclosure includes a sulfur-carbon nanotube composite comprising a sheet of carbon nanotubes and sulfur nucleated upon the carbon nanotubes, and methods for synthesizing the same. In some embodiments, the sulfur-carbon composite may further be binder-free and include a sheet of carbon nanotubes, rendering a binder and a current collector unnecessary. In other embodiments of the present disclosure, a cathode comprising the sulfur-carbon nanotube composite is disclosed. In additional embodiments of the present disclosure, batteries may include the cathodes described herein. Those batteries may achieve high rate capabilities.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: March 10, 2015
    Assignee: Board of Regents, The University of Texas System
    Inventors: Arumugam Manthiram, Yu-Sheng Su
  • Publication number: 20150064561
    Abstract: Provided is a process for preparing an electrode comprising an iron active material. The process comprises first fabricating an electrode comprising an iron active material, and then treating the surface of the electrode with an oxidant to thereby create an oxidized surface. The resulting iron electrode is preconditioned prior to any charge-discharge cycle to have the assessable surface of the iron active material in the same oxidation state as in discharged iron negative electrodes active material.
    Type: Application
    Filed: September 5, 2014
    Publication date: March 5, 2015
    Applicant: ENCELL TECHNOLOGY, INC.
    Inventors: Randy Gene OGG, Michael RODERS, Michael MEESE
  • Publication number: 20150064563
    Abstract: Provided are a method of manufacturing a lithium nickel complex oxide including mixing a nickel-containing mixed transition metal precursor, a lithium compound, and a polyvinylidene fluoride-hexafluoropropylene (PVdF-HFP) copolymer, and heat treating the mixture, a lithium nickel complex oxide manufactured thereby, and a cathode active material including the lithium nickel complex oxide. The method of manufacturing a lithium nickel complex oxide according to an embodiment of the present invention may adjust a ratio of divalent nickel (NiII) to trivalent nickel (NiIII) by using a polyvinylidene fluoride-hexafluoropropylene (PVdF-HFP) copolymer, and thus, the method may improve capacity of a secondary battery.
    Type: Application
    Filed: August 12, 2014
    Publication date: March 5, 2015
    Inventors: Ji Hye Kim, Sung Bin Park, Wang Mo Jung, Sang Seung Oh, Byung Chun Park
  • Publication number: 20150064559
    Abstract: An electrode-active material, a lithium-ion battery, and a method for detecting a discharge state of an electrode-active material that make it possible to realize high load characteristics, high cycle characteristics, and high energy density, have a high degree of safety and stability, and make it possible to easily detect the state of a late stage of discharge are disclosed. The electrode-active material is obtained by coating the surface of a particle containing LiwAxDO4 with a coating layer containing LiyEzGO4. In a discharge curve of the electrode-active material, a second region which follows a first region showing a substantially constant discharge potential and shows a drop in a discharge potential includes a third region in which a rate of change in a discharge potential is lower than an average rate of change in a discharge potential of the second region.
    Type: Application
    Filed: March 11, 2013
    Publication date: March 5, 2015
    Inventors: Kouji Oono, Satoru Oshitari, Kazuyo Yamamoto
  • Publication number: 20150060740
    Abstract: Provided is a process for preparing an electrode comprising an iron active material. The process comprises first fabricating an electrode comprising an iron active material, and then treating the surface of the electrode with an oxidant solution to thereby create an oxidized surface. The resulting iron electrode is thereby preconditioned prior to any charge-discharge cycle to have the assessable surface of the iron active material in the same oxidation state as in discharged iron negative electrodes active material.
    Type: Application
    Filed: September 5, 2014
    Publication date: March 5, 2015
    Applicant: ENCELL TECHNOLOGY, INC.
    Inventors: Randy Gene OGG, Michael RODERS, Michael MEESE
  • Publication number: 20150060743
    Abstract: Perovskite related compound of the present invention have layered structures in which perovskite units and A-rare earth structure units are alternately arranged. The reduced cell parameters ar-cr and ?r-?r and the reduced cell volume Vr are within the following ranges: ar=6.05±0.6 ?, br=8.26±0.8 ?, cr=9.10±0.9 ?, ?r=103.4±10°, ?r=90±10°, ?r=90±10°, and Vr=442.37±67 ?3. At least one of the reduced cell parameters ar-cr can be m/n times as large as the aforementioned values, where m and n are independent natural numbers, the square roots of 2 or 3 or integral multiples thereof. Values of ar, br and cr can be replaced with one another, or values of ?r, ?r and ?r can be replaced with one another.
    Type: Application
    Filed: July 9, 2014
    Publication date: March 5, 2015
    Inventors: Masatomo Yashima, Kotaro Fuji, Kazuki Omoto, Yuichi Esaki, Chihiro Saito
  • Publication number: 20150060721
    Abstract: (Problem) In conventional method for producing artificial graphite, in order to obtain a product having excellent crystallinity, it was necessary to mold a filler and a binder and then repeat impregnation, carbonization and graphitization, and since carbonization and graphitization proceeded by a solid phase reaction, a period of time of as long as 2 to 3 months was required for the production and cost was high and further, a large size structure in the shape of column and cylinder could not be produced. In addition, nanocarbon materials such as carbon nanotube, carbon nanofiber and carbon nanohorn could not be produced.
    Type: Application
    Filed: November 4, 2014
    Publication date: March 5, 2015
    Applicant: INCUBATION ALLIANCE, INC.
    Inventors: Kazuo MURAMATSU, Masahiro TOYODA
  • Publication number: 20150060726
    Abstract: Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a mixture of a lithium/manganese spinel oxide having a substitution of a manganese (Mn) site with a certain metal ion and a lithium/nickel/cobalt/manganese composite oxide, as a cathode active material.
    Type: Application
    Filed: November 11, 2014
    Publication date: March 5, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Ji Heon Ryu, Min Su Kim, Jung Eun Hyun, Jaepil Lee, Eun Ju Lee, Youngjoon Shin
  • Publication number: 20150060725
    Abstract: The present invention relates to positive electrode active substance particles comprising a compound having at least a crystal system belonging to a space group of R-3m and a crystal system belonging to a space group of C2/m, the positive electrode active substance particles having a specific intensity ratio; a content of Mn in the positive electrode active substance particles being controlled such that a molar ratio of Mn/(Ni+Co+Mn) therein is not less than 0.55; and the positive electrode active substance particles comprising an element A (that is at least one element selected from the group consisting of Si, Zr and Y) in an amount of 0.03 to 5% by weight and having a tap density of 0.8 to 2.4 g/cc and a compressed density of 2.0 to 3.1 g/cc. The positive electrode active substance particles can be produced by calcining a mixture of precursor particles comprising the element A, Mn, Ni and/or Co, and a lithium compound.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 5, 2015
    Inventors: Manabu Yamamoto, Daisuke Nishikawa, Taisei Inoue, Osamu Sasaki, Hideaki Sadamura
  • Publication number: 20150064558
    Abstract: To provide an active material having high capacity and excellent cycle characteristics. An active material has a layered crystal structure and is expressed by a compositional formula (1) LiyNiaCobMncMdOx (1), where the element M is at least one kind of element selected from the group consisting of Al, Si, Zr, Ti, Fe, Mg, Nb, Ba, and V; 1.9?(a+b+c+d+y)?2.1; 1.05?y?1.35; 0<a?0.3; 0<b?0.25; 0.3?c?0.7; 0?d?0.1; and 1.9?x?2.1, and wherein 0.69?Ni?/Ni??0.85, where Ni? is the Ni composition amount at a center portion of the active material primary particle, and Ni? is the Ni composition amount in the vicinity of a surface (in a width of 30 nm from the surface).
    Type: Application
    Filed: March 26, 2013
    Publication date: March 5, 2015
    Inventors: Hideaki Seki, Tomohiko Kato, Hirofumi Nakano, Atsushi Sano
  • Publication number: 20150060739
    Abstract: Provided is a process for preparing an electrode comprising an iron active material. The process comprises first fabricating an electrode comprising an iron active material, and then treating the surface of the electrode with water to thereby create an oxidized surface. The resulting iron electrode is preconditioned prior to any charge-discharge cycle to have the assessable surface of the iron active material in the same oxidation state as in discharged iron negative electrodes active material.
    Type: Application
    Filed: September 5, 2014
    Publication date: March 5, 2015
    Applicant: Encell Technology, Inc.
    Inventors: Randy Gene OGG, Michael RODERS, Michael MEESE
  • Publication number: 20150064554
    Abstract: The present invention relates to a positive electrode for lithium ion secondary batteries, the positive electrode comprising a positive electrode active material and a positive electrode binder, in which the positive electrode active material comprises lithium manganate having a spinel structure, and the positive electrode binder comprises at least polyvinylidene fluoride (PVDF) and a resin having sulfone linkages, and to a lithium ion secondary battery comprising the positive electrode for lithium ion secondary batteries.
    Type: Application
    Filed: March 26, 2013
    Publication date: March 5, 2015
    Inventors: Hideaki Sasaki, Takehiro Noguchi
  • Publication number: 20150064553
    Abstract: The present invention relates to a negative electrode active substance for non-aqueous electrolyte secondary batteries comprising composite particles comprising metal particles, and a thermosetting resin or a carbonized product of the thermosetting resin, the composite particles having an average particle diameter of 5 to 100 ?m; and a lithium ion secondary battery using the negative electrode active substance for non-aqueous electrolyte secondary batteries. The lithium ion secondary battery of the present invention is a non-aqueous electrolyte secondary battery that is prevented from suffering from volume expansion owing to occlusion of Li therein.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 5, 2015
    Inventors: Yoshiteru Kono, Kenji Ogisu, Kazuyuki Hayashi, Katsuji Iwami, Tomoko Okita
  • Patent number: 8968594
    Abstract: A method is employed for producing a positive electrode active material for a lithium secondary battery that comprises mixing lithium phosphate having a particle diameter D90 of 100 ?m or less, an M element-containing compound having a particle diameter D90 of 100 ?m or less (where, M is one type or two or more types of elements selected from the group consisting of Mg, Ca, Fe, Mn, Ni, Co, Zn, Ge, Cu, Cr, Ti, Sr, Ba, Sc, Y, Al, Ga, In, Si, B and rare earth elements) and water, adjusting the concentration of the M element with respect to water to 4 moles/L or more to obtain a raw material, and producing olivine-type LiMPO4 by carrying out hydrothermal synthesis using the raw material.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: March 3, 2015
    Assignee: Showa Denko K.K.
    Inventors: Akihisa Tonegawa, Akihiko Shirakawa, Isao Kabe, Gaku Oriji
  • Patent number: 8968602
    Abstract: The present invention is directed to crystalline organic polymer nanoparticles comprising a conductive organic polymer; wherein the crystalline organic polymer nanoparticles have a size of from 10 nm to 200 nm and exhibits two current-voltage states: (1) a high resistance current-voltage state, and (2) a low resistance current-voltage state, wherein when a first positive threshold voltage (Vth1) or higher positive voltage, or a second negative threshold voltage (Vth2) or higher negative voltage is applied to the nanoparticle, the nanoparticle exhibits the low-resistance current-voltage state, and when a voltage less positive than the first positive threshold voltage or a voltage less negative than the second negative threshold voltage is applied to the nanoparticle, the nanoparticle exhibits the high-resistance current-voltage state. The present invention is also directed methods of manufacturing the nanoparticles using novel interfacial oxidative polymerization techniques.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: March 3, 2015
    Assignee: Research Foundation of the City University of New York
    Inventors: Kai Su, Nurxat Nuraje, Lingzhi Zhang, Hiroshi Matsui, Nan Loh Yang
  • Patent number: 8968929
    Abstract: The present disclosure is directed at an electrode and methods for forming such electrode for a battery wherein the electrode comprises silicon clathrate. The silicon clathrate may include silicon clathrate Si46 containing an arrangement of 20-atom and 24-atom cages fused together through 5 atom pentagonal rings and/or silicon clathrate Si34 containing an arrangement of 20-atom and 28-atom cages fused together through 5 atom pentagonal rings. The silicon clathrate may be present as particles having a largest linear dimension in the range of 0.1 ?m to 100.0 ?m.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: March 3, 2015
    Assignee: Southwest Research Institute
    Inventors: Kwai S. Chan, Candace K. Chan, Wuwei Liang
  • Publication number: 20150053889
    Abstract: A solid-state (non-organic) high-power and high-energy-density cathode that is mechanically, thermally, and ionically robust.
    Type: Application
    Filed: August 23, 2013
    Publication date: February 26, 2015
    Inventor: Brian O'Hunt Franklin
  • Publication number: 20150056515
    Abstract: An electrode active material including a vanadium oxide represented by Formula 1, VOx??Formula 1 wherein vanadium in the vanadium oxide has a mixed oxidation state of a plurality of oxidation numbers, and the oxidation numbers include an oxidation number of +3, and wherein, in Formula 1 above, 1.5<x<2.5.
    Type: Application
    Filed: August 25, 2014
    Publication date: February 26, 2015
    Inventors: Ryounghee Kim, Seoksoo Lee, Dongwook Han, Anass BENAYAD, Jusik Kim, Wonseok Chang
  • Publication number: 20150056508
    Abstract: Disclosed is a cathode active material in which lithium cobalt oxide particles and manganese (Mn) or titanium (Ti)-containing lithium transition metal oxide particles co-exist and a method of preparing the same.
    Type: Application
    Filed: November 5, 2014
    Publication date: February 26, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Sun Sik Shin, Hye Lim Jeon, Bo Ram Lee, Hong Kyu Park
  • Publication number: 20150053890
    Abstract: The present invention relates to a method of preparing a cathode active material precursor for a lithium rechargeable battery, the cathode active material precursor for the lithium rechargeable battery prepared thereby, and a cathode active material formed using the cathode active material precursor. According to the present invention, the method of preparing a cathode active material precursor for a lithium secondary battery controls the concentration of a concentration gradient part and a shell part in a precursor to obtain a desired concentration of a transition metal in the shell part. As a result, a metal composition is distributed in a continuous concentration gradient from the interface between the core part and the shell part to the surface of the cathode active material, thereby a cathode active material with excellent thermal stability.
    Type: Application
    Filed: March 29, 2013
    Publication date: February 26, 2015
    Inventor: Yang-Kook Sun
  • Publication number: 20150056509
    Abstract: A negative active material, a negative electrode and a lithium battery including the same, and a method of manufacturing the negative active material are disclosed. The negative active material includes a silicon-based alloy including Si, Al, and Cu. Since the silicon-based alloy includes AlCu and Al2Cu as inactive phases, the lifespan of a lithium battery may be increased.
    Type: Application
    Filed: June 25, 2014
    Publication date: February 26, 2015
    Inventors: Chang-Ui Jeong, Young-Ugk Kim, Jae-Hyuk Kim, Yo-Han Park, Seung-Uk Kwon, Soon-Sung Suh, Duk-Hyoung Yoon
  • Publication number: 20150056514
    Abstract: Nanoporous metal oxide framework compositions useful as anodic materials in a lithium ion battery, the composition comprising metal oxide nanocrystals interconnected in a nanoporous framework and having interconnected channels, wherein the metal in said metal oxide comprises titanium and at least one metal selected from niobium and tantalum, e.g., TiNb2-x TaxOy (wherein x is a value from 0 to 2, and y is a value from 7 to 10) and Ti2Nb10-vTavOw (wherein v is a value from 0 to 2, and w is a value from 27 to 29). A novel sol gel method is also described in which sol gel reactive precursors are combined with a templating agent under sol gel reaction conditions to produce a hybrid precursor, and the precursor calcined to form the anodic composition. The invention is also directed to lithium ion batteries in which the nanoporous framework material is incorporated in an anode of the battery.
    Type: Application
    Filed: August 23, 2013
    Publication date: February 26, 2015
    Inventors: Sheng Dai, Bingkun Guo, Xiao-Guang Sun, Zhenan Qiao
  • 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
  • Patent number: 8962185
    Abstract: Provided is a cathode mix for lithium secondary batteries, comprising a cathode active material having a composition represented by the following Formula I: LiFe(P1-XO4) (I) wherein a molar fraction (1?x) of phosphorus (P) is in the range of 0.910 to 0.999, to allow operational efficiency of the cathode active material to be leveled to a lower operational efficiency of an anode active material and improve energy density of the cathode active material. The cathode mix maximizes operational efficiency of batteries, minimizes electrode waste and thus reduces manufacturing costs of batteries. Furthermore, The cathode active material, wherein a molar fraction (1?x) of phosphorus (P) is lower than 1, according to the present invention contains both Fe2+ and Fe3+, thus advantageously causing no structural deformation, improving ionic conductivity, exhibiting superior rate properties, inhibiting IR drop upon charge/discharge, thereby imparting high energy density to batteries.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: February 24, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Sanghoon Choy, Yong Tae Lee, Hong-Kyu Park, Soo Min Park, Hyo-Shik Kil, Cheol-Hee Park
  • Patent number: 8962186
    Abstract: A lithium iron phosphate hierarchical structure includes a plurality of lithium iron phosphate nano sheets and has an overall spherical-shaped structure. The overall spherical-shaped structure is constructed by a plurality of lithium iron phosphate nano sheets layered together. A method for making a lithium iron phosphate hierarchical structure includes several steps. In the method, a lithium ion contained liquid solution, a ferrous ion contained liquid solution, and a phosphate ion contained liquid solution are respectively provided. A concentration of lithium ions in the lithium ion contained liquid solution is equal to or larger than 1.8 mol/L. The lithium ion contained liquid solution, the ferrous ion contained liquid solution, and the phosphate ion contained liquid solution are mixed to form a liquid mixture. The liquid mixture is heated in a sealed reactor to form the lithium iron phosphate hierarchical structure.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: February 24, 2015
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Li Wang, Xiang-Ming He, Wen-Ting Sun, Jian-Jun Li, Xian-Kun Huang, Jian Gao
  • Publication number: 20150050554
    Abstract: Provided are a binder composition which has high electrolyte resistance characteristics, and a secondary battery which uses a positive electrode using the binder composition for high-temperature cycle characteristics. [Solution] The binder composition for the secondary battery positive electrode according to the present invention contains a polymerized unit which contains a nitrile group; a polymerized unit of (meth) acrylic acid ester; a polymerized unit which contains a hydrophilic group; and a polymerized unit of linear alkylene having a carbon number of at least four. In a mixed solvent in which a volume ratio EC:DEC between ethylene carbonate (EC) and diethyl carbonate (DEC) at 20° C. is 1:2, a degree of swelling with respect to an electrolyte in which LiPF6 is dissolved to have a concentration of 1.0 mol/L is between 100% and 500%.
    Type: Application
    Filed: November 28, 2012
    Publication date: February 19, 2015
    Applicant: Zeon Corporation
    Inventors: Mayumi Fukumine, Kei Kobayashi
  • Publication number: 20150048273
    Abstract: The present invention relates to a production process for an electrode material, an electrode and an electric storage device, and the production process for an electrode material comprises a step of heating a polymer having a silicon-containing unit and a silicon-non-containing unit.
    Type: Application
    Filed: August 13, 2014
    Publication date: February 19, 2015
    Applicant: JSR CORPORATION
    Inventors: Ryo TANAKA, Kouji Senoo, Takahiro Shimizu, Yukio Hosaka, Fujio Sakurai, Satoshi Shimobaba, Motoki Okaniwa, Nobuyuki Miyaki, Yuuichi Eriyama
  • Patent number: 8956759
    Abstract: Disclosed herein is a 3V class spinel oxide with improved high-rate characteristics which has the composition Li1+x[MyMn(2?y)]O4?zSz (0?x?0.1, 0.01?y?0.5, 0.01?z?0.5, and M is Mn, Ni or Mg). Further disclosed is a method for preparing the 3V class spinel oxide by carbonate coprecipitation of starting materials, addition of sulfur, followed by calcining. The 3V class spinel oxide is spherical and has a uniform size distribution. A lithium secondary battery including the 3V class spinel oxide has a constant plateau at a potential of 3V and shows superior cycle characteristics.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: February 17, 2015
    Assignee: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University
    Inventors: Yang Kook Sun, Sang Ho Park, Sung Woo Oh
  • Publication number: 20150044578
    Abstract: Described are binder precursor compositions for cathodes containing polyamic acid which has a anhydride to amine ratio of greater than or equal to 0.985:1 to less than or equal to 1.10:1. These compositions are useful as cathodes in electrochemical cells, such as lithium ion batteries. Also described are electrodes comprising the binder precursor compositions and methods to prepare the electrodes.
    Type: Application
    Filed: July 28, 2014
    Publication date: February 12, 2015
    Inventors: KOSTANTINOS KOURTAKIS, Biswajit Choudhury, Gerard Joseph Grier
  • Publication number: 20150044569
    Abstract: A composition, comprising: a composite including (i) a carbon fluoride component comprising a CFx material, wherein x?1, and having a first electrochemical property, and (ii) a carbonaceous material component having a second electrochemical property. The carbon fluoride component is 70 wt % to 99 wt % based on a total weight of the composite. The carbonaceous material component is 1 wt % to 30 wt % based on the total weight of the composite. The composite is adapted to react with energy applied thereto, and wherein, upon such reaction, the composite provides a third electrochemical property that is higher than the first electrochemical property, higher than the second electrochemical property, and higher than a combination of the first and second electrochemical properties.
    Type: Application
    Filed: August 6, 2014
    Publication date: February 12, 2015
    Inventors: Nathalie Pereira, Fadwa Badway, Glenn G. Amatucci
  • Publication number: 20150044559
    Abstract: A secondary battery negative electrode composite particle including a negative electrode active material and a particulate polymer, wherein the particulate polymer include 10% by weight to 60% by weight of a (meth)acrylonitrile monomer unit and 35% by weight to 85% by weight of an aliphatic conjugated diene monomer unit; and a residual amount of an organic compound having an unsaturated bond and a boiling point of 150° C. to 300° C. is 500 ppm or less as a ratio relative to an amount of the particulate polymer.
    Type: Application
    Filed: March 21, 2013
    Publication date: February 12, 2015
    Applicant: ZEON CORPORATION
    Inventor: Yuuko Toyoda
  • Publication number: 20150041707
    Abstract: A negative active material for a secondary battery that provides high capacity, high efficiency charging and discharging characteristics includes: a silicon single phase; and a silicon-metal alloy phase by which the silicon single phase is bounded, wherein the negative active material comprises 5 to 30 wt % of nickel, 5 to 30 wt % of titanium, and 40 to 90 wt % of silicon, the negative active material has a first peak of the silicon-metal alloy phase in an X-ray diffraction analysis spectrum, the silicon single phase is finely distributed in the silicon-metal single phase by mechanical alloying, and the first peak resulting from the (501) surface of the silicon-metal alloy phase has a greater value than the first peak resulting from the (501) surface of the silicon-metal alloy phase that is not subjected to the mechanical alloying, by 0.6° to 0.9°.
    Type: Application
    Filed: November 22, 2013
    Publication date: February 12, 2015
    Applicant: MK ELECTRON CO., LTD.
    Inventors: Sung Min JEON, Jong Soo CHO, Hyung Ki AHN
  • Publication number: 20150041710
    Abstract: Disclosed herein is a 3V class spinel oxide with improved high-rate characteristics which has the composition Li1+x[MyMn(2?y)]O4?zSz (0?x?0.1, 0.01?y?0.5, 0.01?z?0.5, and M is Mn, Ni or Mg). Further disclosed is a method for preparing the 3V class spinel oxide by carbonate coprecipitation of starting materials, addition of sulfur, followed by calcining. The 3V class spinel oxide is spherical and has a uniform size distribution. A lithium secondary battery including the 3V class spinel oxide has a constant plateau at a potential of 3V and shows superior cycle characteristics.
    Type: Application
    Filed: October 28, 2014
    Publication date: February 12, 2015
    Inventors: Yang Kook Sun, SANG HO PARK, SUNG WOO OH
  • Publication number: 20150044548
    Abstract: The present invention relates to electrode materials for electrical cells, containing, as component (A), at least one polymer including polymer chains formed from identical or different monomer units selected from substituted and unsubstituted vinyl units and substituted and unsubstituted C2-C10-alkylene glycol units and containing at least one monomer unit -M1- including at least one thiolate group —S? or at least one end of a disulfide or polysulfide bridge —(S)m— in which m is an integer from 2 to 8, the thiolate group or the one end of the disulfide or polysulfide bridge —(S)m— in each case being bonded directly to a carbon atom of the monomer unit -M1-, and, as component (B), carbon in a polymorph containing at least 60% sp2-hybridized carbon atoms. The present invention also relates to electrical cells containing the inventive electrode material, to specific polymers, to processes for preparation, and to uses of the inventive cells.
    Type: Application
    Filed: June 6, 2012
    Publication date: February 12, 2015
    Applicant: BASF SE
    Inventors: Arnd Garsuch, Alexander Panchenko, Siegfried Waldvogel, Birgit Janza
  • Publication number: 20150041709
    Abstract: According to one embodiment, there is provided a active material for a battery including a complex oxide containing niobium and titanium. A ratio MNb/MTi of a mole of niobium MNb to a mole of titanium MTi in the active material satisfies either the following equation (I) or (II). 0.
    Type: Application
    Filed: October 27, 2014
    Publication date: February 12, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuhiro HARADA, Norio TAKAMI, Hiroki INAGAKI
  • Publication number: 20150044561
    Abstract: To provide a binder for a storage battery device whereby favorable adhesion is obtainable and swelling by an electrolytic solution can favorably be suppressed. A binder for a storage battery device, which is made of a fluorinated copolymer comprising structural units (A), structural units (B) and structural units (C), wherein the molar ratio of the structural units (C) to the total of all the structural units excluding the structural units (C) is from 0.01/100 to 3/100: structural units (A): structural units derived from a monomer selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride and chlorotrifluoroethylene; structural units (B): structural units derived from ethylene or propylene; and structural units (C): structural units derived from a C5-30 organic compound having at least two double bonds and at least one of the double bonds being a double bond of a vinyl ether group or a double bond of a vinyl ester group.
    Type: Application
    Filed: October 27, 2014
    Publication date: February 12, 2015
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Takehiro KOSE, Mizuna TOYODA, Hiroki NAGAI
  • Publication number: 20150044563
    Abstract: A composite precursor represented by Formula 1, a composite prepared therefrom represented by Formula 2, a method of preparing a composite precursor and a composite, a positive electrode for lithium secondary battery including the same, and a lithium secondary battery employing the same. aMn3O4-bM(OH)2??Formula 1 wherein in Formula 1, 0<a?0.8, 0.2?b<1 and M is at least one metal selected from the group consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron, (Fe), cobalt (Co), nickel (Ni), copper (Cu), aluminum (Al), magnesium (Mg), zirconium (Zr), and boron (B) aLi2MnO3-bLiyMO2??Formula 2 wherein in Formula 2, 0?a?0.6, 0.4?b?1 1.0?y?1.05, and M is at least one metal selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Al, Mg, Zr, and B.
    Type: Application
    Filed: May 22, 2014
    Publication date: February 12, 2015
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Seon-Young Kwon, Do-Hyung Park, Min-Han Kim, Ji-Hyun Kim, Joong-Ho Moon, Kyoung-Hyun Kim, Han-Eol Park, Yong-Chan You, Chang-Wook Kim
  • Publication number: 20150041708
    Abstract: The present invention relates to, inter alia, gyroidal mesoporous carbon materials and methods of use and manufacture thereof. In one embodiment, the present invention relates to a mesoporous carbon composition comprising a gyroidal mesoporous carbon having an ordered gyroidal structure and mesopores having a pore size of greater than 2 nanometers (nm) in diameter, and more particularly greater than 11 nm in diameter.
    Type: Application
    Filed: August 11, 2014
    Publication date: February 12, 2015
    Applicant: CORNELL UNIVERSITY
    Inventors: Ulrich B. WIESNER, Joerg G. WERNER
  • Publication number: 20150044571
    Abstract: A composition comprising a first particulate electroactive material, a particulate graphite material and a binder, wherein at least 50% of the total volume of each said particulate materials is made up of particles having a particle size D50 and wherein a ratio of electroactive material D50 particle size:graphite D50 particle size is up to 4.5:1.
    Type: Application
    Filed: January 29, 2013
    Publication date: February 12, 2015
    Applicant: Nexeon Limited
    Inventors: Mamdouh Elsayed Abdelsalam, Fazil Coowar
  • Publication number: 20150044566
    Abstract: An electronically active glass has the composition (TxOy)z-(MuOv)w—(Na/LiBO2)t wherein T is a transition metal selected from V and Mo, M is a metal selected from Ni, Co, Na, Al, Mn, Cr, Cu, Fe, Ti and mixtures thereof, x, y, u, and v are the stoichiometric coefficients resulting in a neutral compound, i.e. x=2y/(oxidation state of T) and u=2v/(oxidation state of M), z, w and t are weight-%, wherein z is 70-80, w is 0-20 t is 10-30, and the sum of z, w and t is 100 weight-%, in particular V2O5—LiBO2 and V2O5—NiO—LiBO2.
    Type: Application
    Filed: March 7, 2013
    Publication date: February 12, 2015
    Inventors: Semih Afyon, Reinhard Nesper