Iron Component Is Active Material Patents (Class 429/221)
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Patent number: 9276264Abstract: Disclosed is a cathode active material represented by the following Formula 1, the cathode active material being in the form of a solid solution or a composite, and a secondary battery including the cathode active material. wLi2MO3*xLiM?O2*yLiM?2O4*zLi3PO4??(1) wherein 0<w<1, 0<x<1, 0<y<0.3, 0<z<0.1 and w+x+y+z=1 are satisfied, M is at least one element selected from first or second period transition metals having a mean oxidation number of +4, M? is at least one element selected from first or second period transition metals having a mean oxidation number of +3, and M? is at least one element selected from first to fourth period transition metals having a combination of mean oxidation numbers of +3 and +4.Type: GrantFiled: February 25, 2013Date of Patent: March 1, 2016Assignee: LG CHEM, LTD.Inventors: Sung Kyun Chang, Hyelim Jeon, Cheol-Hee Park, Hong-Kyu Park, Soo Min Park, Ji Eun Lee
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Patent number: 9249034Abstract: Positive electrode active substance particles including 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, and boron. The compound is a composite oxide comprising at least Li, Mn, and Co and/or Ni; a relative intensity ratio [(a)/(b)] of a maximum diffraction peak intensity (a) observed at 2?=20.8±1° in a powder X-ray diffraction pattern of the positive electrode active substance as measured using a Cu-Ku ray to a maximum diffraction peak intensity (b) observed at 2?=18.6±1° in the powder X-ray diffraction pattern, is 0.02 to 0.5; a content of Mn in the positive electrode active substance particles such that a molar ratio of Mn/(Ni+Co+Mn) is not less than 0.55; and the positive electrode active substance particles include boron in an amount of 0.001 to 3% by weight.Type: GrantFiled: September 28, 2010Date of Patent: February 2, 2016Assignee: TODA KOGYO CORPORATIONInventors: Manabu Yamamoto, Daisuke Nishikawa, Kazutoshi Ishizaki, Kazuhiko Kikuya, Teruaki Santoki, Osamu Sasaki, Hideaki Sadamura
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Patent number: 9224512Abstract: A positive electrode active material for a non-aqueous secondary battery having high capacity and high rate characteristics is intended to be provided. Further, a positive electrode for a non-aqueous secondary battery and a non-aqueous secondary battery are intended to be provided by using the positive electrode active material. The positive electrode active material for the non-aqueous secondary battery contains a lithium composite oxide having an olivine structure represented by the chemical formula: Li1+AMnXM1?X(PO4)1+B in which A>0, B>0, M represents a metal element, M in the chemical formula is one or more metal elements selected from Fe, Ni, Co, Ti, Cu, Zn, Mg, V, and Zr, the ratio A/B in the chemical formula is within a range of: 2<A/B?7, and the value of X is within a range of: 0.3?X<1.Type: GrantFiled: January 29, 2014Date of Patent: December 29, 2015Assignee: Hitachi Metals, Ltd.Inventors: Takashi Nakabayashi, Shin Takahashi, Kan Kitagawa, Toyotaka Yuasa, Shuichi Takano, Mitsuru Kobayashi
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Patent number: 9225022Abstract: The positive active material is a positive active material for a lithium secondary battery, including a lithium transition metal compound that has an olivine crystal structure and contains at least Ni, Fe, and Mn as transition metal elements, wherein when the sum of mole atoms of Ni, Fe, and Mn of transition metal elements contained in the lithium transition metal compound is expressed as 1, and the mole atomic ratios of Ni, Fe, and Mn are represented by a, b, and c (a+b+c=1, a>0, b>0, c>0), respectively, the following is satisfied: 0.85?c?0.92 and 0.3?a/(a+b)?0.9.Type: GrantFiled: June 16, 2010Date of Patent: December 29, 2015Assignee: GS YUASA INTERNATIONAL LTD.Inventors: Mariko Kohmoto, Toru Tabuchi, Tokuo Inamasu, Toshiyuki Nukuda
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Patent number: 9209456Abstract: Provided are novel electrode material composite structures containing high capacity active materials formed into porous base structures. The structures also include shells that encapsulate these porous base structures. During lithiation of the active material, the shell mechanically constrains the porous base structure. The shell allows lithium ions to pass through but prevents electrolyte solvents from interacting with the encapsulated active material. In certain embodiments, the shell contains carbon, while the porous base structure contains silicon. Although silicon tends to swell during lithiation, the porosity of the base structure and/or void spaces inside the shell helps to accommodate this additional volume within the shell without breaking it or substantially increasing the overall size of the composite structure.Type: GrantFiled: October 20, 2011Date of Patent: December 8, 2015Assignee: Amprius, Inc.Inventors: Rainer J. Fasching, Zuqin Liu, Song Han, Ghyrn E. Loveness, Constantin I. Stefan
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Patent number: 9178209Abstract: Disclosed is a cathode for a lithium secondary battery and a lithium secondary battery comprising the same. The cathode for a lithium secondary battery may include a current collector, a first composite layer formed from a mixture of olivine-type lithium iron phosphate cathode active material powder and a binder on the current collector, and a second composite layer formed from a mixture of olivine-type lithium iron phosphate cathode active material powder and a binder on the first composite layer. A specific surface area of the olivine-type lithium iron phosphate cathode active material powder in the second composite layer may be 0.8 times or less that of the olivine-type lithium iron phosphate cathode active material powder in the first composite layer. The cathode for a lithium secondary battery has excellent stability, high energy density, and improved cycle life characteristics.Type: GrantFiled: March 28, 2013Date of Patent: November 3, 2015Assignee: LG Chem, Ltd.Inventors: Jong-Hee Kim, Hyung-Kyu Lim, In-Jung Kim, In-Seok Yang, Seok-Jung Park
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Patent number: 9172087Abstract: An electrode material contains an agglomerate formed by agglomerating a plurality of agglomerated particles formed by agglomerating a plurality of particles of a carbonaceous coated electrode active material having a carbonaceous coat formed on a surface, the agglomerate is made up of hollow-structured particles and solid-structured particles, the average particle diameter of the agglomerate is in a range of 0.5 ?m to 100 ?m, the volume density of the agglomerate is in a range of 50% by volume to 80% by volume, the micropore distribution of micropores present in the agglomerate is monomodal, the average micropore diameter in the micropore distribution is 0.3 ?m or less, and the NMP oil absorption amount of the agglomerate is in a range of 40 g/100 g to 100 g/100 g.Type: GrantFiled: March 10, 2014Date of Patent: October 27, 2015Assignee: SUMITOMO OSAKA CEMENT CO., LTD.Inventors: Kenta Ooishi, Koji Oono, Takao Kitagawa, Tetsuya Nakabeppu
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Patent number: 9166228Abstract: A method is provided for forming a high-capacity, high-rate lithium ion battery cathode material. The method includes providing a synthesized material of electrochemically active plate-shaped nanoparticles and adding a plurality of appropriately sized diluent particles to the plate-shaped nanoparticles to form a suspension. Any liquid is removed from the solution to form a composite material. The method also includes processing the composite material to form a high-capacity, high-rate lithium ion battery cathode material.Type: GrantFiled: November 7, 2011Date of Patent: October 20, 2015Assignee: PURDUE RESEARCH FOUNDATIONInventors: Kyle C. Smith, Timothy S. Fisher
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Patent number: 9160031Abstract: The present invention relates to a positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery comprising the same. The positive active material includes a lithium/nickel-based compound wherein primary particles having an average particle diameter ranging from 1 ?m to 4 ?m are agglomerated to form secondary particles. The positive active material of the present invention has excellent electrochemical performance and outstanding inhibition to swelling at high temperatures.Type: GrantFiled: February 4, 2005Date of Patent: October 13, 2015Assignee: Samsung SDI Co., Ltd.Inventors: Won-Il Jung, Jun-Won Suh, Yong-Chul Park, Geun-Bae Kim
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Patent number: 9147879Abstract: This invention provides a nano composite porous electrode material that has high charge-discharge behavior and charge or discharge capacity and a manufacturing method thereof. It also provides a lithium-ion secondary battery using this nano composite porous electrode material. The nano composite porous electrode material according to this invention has a porous structure such that nano-size pores are three-dimensionally connected with each other wherein walls of the pores thereof are composed of olivine type LiMnPO4 and carbon, a specific surface area Sa is 55 m2g?1<Sa<248 m2g?1, an amount of contained carbon Cc is 15.5 wt %<Cc<28 wt % and a diameter of crystallite is less than 39 nm. This enables a high charge-discharge capacity and a fast charge or discharge behavior to be obtained.Type: GrantFiled: June 24, 2010Date of Patent: September 29, 2015Assignee: NAGASAKI UNIVERSITYInventors: Isamu Moriguchi, Hirotoshi Yamada
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Patent number: 9147877Abstract: 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: GrantFiled: December 8, 2014Date of Patent: September 29, 2015Assignee: BASF SEInventors: Hartmut Hibst, Brian Roberts, Jordan Keith Lampert, Kirill Bramnik
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Patent number: 9136532Abstract: 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: GrantFiled: November 30, 2012Date of Patent: September 15, 2015Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Yasuhiro Harada, Norio Takami, Hiroki Inagaki
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Patent number: 9099737Abstract: 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: GrantFiled: December 8, 2014Date of Patent: August 4, 2015Assignee: BASF SEInventors: Hartmut Hibst, Brian Roberts, Jordan Keith Lampert, Kirill Bramnik
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Patent number: 9065135Abstract: Disclosed is lithium iron phosphate having an olivine crystal structure, wherein the length in the direction [001] is greater than the length in the direction [010] when the Li+ diffusion direction is the direction [010] in the lattice structure of the crystal.Type: GrantFiled: September 12, 2012Date of Patent: June 23, 2015Assignee: LG CHEM, LTD.Inventors: Sang Hoon Choy, Yong Tae Lee, Hong Kyu Park
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Publication number: 20150147650Abstract: An antimony based anode material for a rechargeable battery comprises nanoparticles of composition SbMxOy where M is a further element selected from the group consisting of Sn, Ni, Cu, In, Al, Ge, Pb, Bi, Fe, Co, Ga, with 0?x<2 and 0?y?2.5+2x. The nanoparticles form a substantially monodisperse ensemble with an average size not exceeding a value of 30 nm and by a size deviation not exceeding 15%. A method for preparing the antimony based anode material is carried out in situ in a non-aqueous solvent and starts by reacting an antimony salt and an organometallic amide reactant and oleylamine.Type: ApplicationFiled: November 20, 2014Publication date: May 28, 2015Inventors: Maksym V. KOVALENKO, He MENG, Kostiantyn KRAVCHYK, Marc WALTER
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Patent number: 9039926Abstract: A production process for composite oxide expressed by a compositional formula: LiMn1-xAxO2, where “A” is one or more kinds of metallic elements other than Mn; and 0?“x”<1, obtained by preparing a raw-material mixture by mixing a metallic-compound raw material and a molten-salt raw material with each other, the metallic-compound raw material at least including an Mn-containing nitrate that includes one or more kinds of metallic elements in which Mn is essential, the molten-salt raw material including lithium hydroxide and lithium nitrate, and exhibiting a proportion of the lithium nitrate with respect to the lithium hydroxide (Lithium Nitrate/Lithium Hydroxide) that falls in a range of from 1 or more to 3 or less by molar ratio; reacting the raw-material mixture at 500° C. or less by melting it; and recovering the composite oxide being generated from the raw-material mixture that has undergone the reaction.Type: GrantFiled: February 7, 2011Date of Patent: May 26, 2015Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Ryota Isomura, Hitotoshi Murase, Naoto Yasuda
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Publication number: 20150140387Abstract: A biodegradable battery is provided. The battery includes an anode comprising a material including an inner surface and an outer surface, wherein electrochemical oxidation of the anode material results in the formation of a reaction product that is substantially non-toxic and a cathode comprising a material including an inner surface and an outer surface, the inner surface of the cathode being in direct physical contact with the inner surface of the anode, wherein electrochemical reduction of the cathode material results in the formation of a reaction product that is substantially non-toxic, and wherein the cathode material presents a larger standard reduction potential than the anode material.Type: ApplicationFiled: January 23, 2015Publication date: May 21, 2015Inventors: GERALD HODGKINSON, WILLIAM O. POWERS, AHMAD ROBERT HADBA
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Publication number: 20150140428Abstract: An electrode material having excellent electron conductivity, load characteristics, and cycle characteristics is provided. The electrode material includes an electrode active material represented by LixFeyAzBO4 (here, A represents either or both selected from a group consisting of Mn and Co, B represents one or more selected from a group consisting of P, Si, and S, 0?x<4, 0<y<1.5, and 0?z<1.5) as a main component and nickel, particle surfaces of the electrode active material are coated with a carbonaceous film, and a content of the nickel is in a range of 1 ppm to 100 ppm.Type: ApplicationFiled: January 29, 2015Publication date: May 21, 2015Inventors: Kouji OONO, Takao KITAGAWA
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Publication number: 20150140359Abstract: In an aspect, a negative active material, a negative electrode and a lithium battery including the negative active material, and a method of manufacturing the negative active material is provided. The negative active material includes a silicon-based active material substrate; a metal oxide nanoparticle disposed on a surface of the silicon-based active material substrate. An initial irreversible capacity of the lithium battery may be decreased and lifespan characteristics may be improved by using the negative active material.Type: ApplicationFiled: April 25, 2014Publication date: May 21, 2015Applicant: Samsung SDI Co., Ltd.Inventors: Sang-Eun Park, Young-Ugk Kim, Hyun-Ki Park, Chang-Su Shin, Ui-Song Do, Sung-Su Kim
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Publication number: 20150132651Abstract: Provided is a cathode active material including a complex coating layer, which includes M below, formed on a surface of the cathode active material through reaction of a lithium transition metal oxide represented by Formula 1 below with a coating precursor: LixMO2??(1) wherein M is represented by MnaM?1-b, M? is at least one selected from the group consisting of Al, Mg, Ni, Co, Cr, V, Fe, Cu, Zn, Ti and B, 0.95?x?1.5, and 0.5?a?1. The lithium secondary battery including the cathode active material exhibits improved lifespan and rate characteristics due to superior stability.Type: ApplicationFiled: January 15, 2015Publication date: May 14, 2015Applicant: LG CHEM, LTD.Inventors: Bo Ram Lee, Hye Lim Jeon, Sun Sik Shin, Sangwook Lee, Wang Mo Jung
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Publication number: 20150132640Abstract: The present disclosure provides a phosphate framework electrode material for sodium ion battery and a method for synthesizing such electrode material. A surfactant and precursors including a sodium precursor, a phosphate precursor, a transition metal precursor are dissolved in a solvent and stirred for sufficient mixing and reaction. The precursors are reacted to yield a precipitate of particles of NaxAbMy(PO4)zXn compound and with the surfactant attached to the particles. The solvent is then removed and the remaining precipitate is sintered to crystallize the particles. During sintering, the surfactant is decomposed to form a carbon network between the crystallized particles and the crystallized particles and the carbon matrix are integrated to form the electrode material.Type: ApplicationFiled: April 23, 2013Publication date: May 14, 2015Inventors: Palani Balaya, Saravanan Kuppan, Bing Liu, Chad William Mason
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Publication number: 20150132626Abstract: An electrode assembly and a secondary battery using the same are disclosed. The electrode assembly includes a positive electrode, a negative electrode, and a lithium ion conductor layer disposed at least in one of between the positive electrode and the negative electrode, on an outer surface of the positive electrode, and on an outer surface of the negative electrode, to improve thermal safety of the secondary battery.Type: ApplicationFiled: November 3, 2014Publication date: May 14, 2015Inventors: Young-Jin Park, Do-Hyung Park, Ki-Hyun Kim, Min-Han Kim, Sang-Hoon Kim, Yu-Mi Song, Sun-Ho Kang, Kwang-Hwan Cho
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Publication number: 20150132650Abstract: A magnesium electrochemical cell having a positive electrode containing as an active ingredient, an amorphous material of formula [V2O5]c[MgXy]d[MaOb]e is provided. In the formula M is an element selected from the group consisting of P, B, Si, Ge and Mo, and X is O, F, Cl, Br or I.Type: ApplicationFiled: November 13, 2013Publication date: May 14, 2015Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Fuminori MIZUNO, Ruigang Zhang, Jason Germain, Keiko Kato, Timothy Sean Arthur
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Publication number: 20150132645Abstract: In order to propose a new negative electrode for nonaqueous electrolyte secondary batteries having excellent dispersibility even with a negative electrode active material having a relatively small particle size, there is proposed a negative electrode active material for nonaqueous electrolyte secondary batteries, the negative electrode active material containing silicon and having negative electrode active material particles that have a D50 based on a volume-based particle size distribution obtainable by measurement by a laser diffraction scattering type particle size distribution analysis method, of 0.1 ?m to 5.0 ?m, and include a surface layer containing oxygen, silicon and carbon on the entire surface or a portion of the active material surface.Type: ApplicationFiled: May 15, 2013Publication date: May 14, 2015Inventors: Daisuke Inoue, Yanko Marinov Todorov, Shinya Kagei
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Patent number: 9029015Abstract: An electrochemical energy storage device includes a cathode, an anode, and an electrolyte disposed between the cathode and the anode. The anode includes a capacitive material as a majority component, and further includes an electrochemically active material as a minority component, such that an operating potential of the anode is configured according to a reaction potential of the electrochemically active material.Type: GrantFiled: May 29, 2012Date of Patent: May 12, 2015Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Mauro Pasta, Colin Wessells, Robert A. Huggins, Yi Cui
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Patent number: 9029018Abstract: A method for making a lithium battery cathode material is disclosed. A mixed solution including a solvent, an iron salt material, a vanadium source material and a phosphate material is provided. An alkaline solution is added in the mixed solution to make the mixed solution have a pH value ranging from about 1.5 to 5. The iron salt, the vanadium source material and the phosphate material react with each other to form a plurality particles of iron phosphate precursor doped with vanadium which are added in a mixture of a lithium source solution and a reducing agent to form a slurry of lithium iron phosphate precursor doped with vanadium. The slurry of lithium iron phosphate precursor doped with vanadium is heat-treated.Type: GrantFiled: December 27, 2010Date of Patent: May 12, 2015Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Gai Yang, Chang-Yin Jiang, Jian Gao, Jie-Rong Ying, Jian-Jun Li, Xiang-Ming He
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Publication number: 20150125749Abstract: The present invention relates to a novel phosphate based composite anode material, preparation method and uses thereof. Specifically disclosed is a phosphate based composite cell anode material, the material having monoclinic and orthorhombic crystal lattice structures with the chemical formula of A3-xV2-yMY(PO4)3, wherein A is Li+, Na+ or the mixture thereof, M is Mg, Al, Sc, Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn or Nb, 0?x?3.0, 0?y?2.0, and C is the carbon layer. Also disclosed are a preparation method and uses of the composite material. Unlike simple physical mixing, the composite material of the present invention has the advantages of an adjustable electric potential plateau, high reversible capacity, good cycle stability, power consumption early warning and the like.Type: ApplicationFiled: September 12, 2012Publication date: May 7, 2015Applicant: Ningbo Institute of Materials & Engineering, Chinese Academy of SciencesInventors: Yuanhao Tang, Chenyun Wang, Deyu Wang, Jun Li
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Publication number: 20150125751Abstract: To simply manufacture a lithium-containing oxide at lower manufacturing cost. A method for manufacturing a lithium-containing composite oxide expressed by a general formula LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)). A solution containing Li and P is formed and then is dripped in a solution containing M (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) to form a mixed solution. By a hydrothermal method using the mixed solution, a single crystal particle of a lithium-containing composite oxide expressed by the general formula LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) is manufactured.Type: ApplicationFiled: January 13, 2015Publication date: May 7, 2015Inventor: Tomoya FUTAMURA
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Patent number: 9023523Abstract: The present invention relates to a process for the preparation of compounds of general formula (I) Lia-bMb1Fe1-cMc2Pd-eMe3Ox, wherein Fe has the oxidation state +2 and M1, M2, M3, a, b, c, d, e and x are: M1: Na, K, Rb and/or Cs, M2: Mn, Mg, Al, Ca, Ti, Co, Ni, Cr, V, M3: Si, S, F a: 0.8-1.9, b: 0-0.3, c: 0-0.9, d: 0.8-1.9, e: 0-0.5, x: 1.0-8, depending on the amount and oxidation state of Li, M1, M2, P, M3, wherein compounds of general formula (I) are neutrally charged, comprising the following steps (A) providing a mixture comprising at least one lithium-comprising compound, at least one iron-comprising compound, in which iron has the oxidation state 0, and at least one M1-comprising compound, if present, and/or at least one M2-comprising compound, if present, and/or least one M3-comprising compound, if present, and at least one compound comprising at least one phosphorous atom in oxidation state +5, and (B) heating the mixture obtained in step (A) at a temperature of 100 to 500° C.Type: GrantFiled: March 16, 2010Date of Patent: May 5, 2015Assignee: BASF SEInventors: Kirill Bramnik, Hartmut Hibst, Jordan Keith Lampert
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Patent number: 9023524Abstract: Disclosed is a lithium mixed metal oxide which is useful for a positive electrode active material that is capable of providing a nonaqueous electrolyte secondary battery having more excellent cycle characteristics, in particular, more excellent cycle characteristics during high-temperature operation at 60 DEG C. or the like. Specifically disclosed is a lithium mixed metal oxide represented by the following formula (A). Lix(Mn1-y-zNiyFez)O2 (A) (In the formula, x is not less than 0.9 and not more than 1.3; y is 0.46 or more and less than 0.5; and z is 0 or more and less than 0.1.) Also disclosed are: a positive electrode active material which comprises the lithium mixed metal oxide; a positive electrode which comprises the positive electrode active material; and a nonaqueous electrolyte secondary battery which comprises the positive electrode.Type: GrantFiled: February 4, 2010Date of Patent: May 5, 2015Assignee: Sumitomo Chemical Company, LimtedInventors: Yuichiro Imanari, Cedric Pitteloud
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Publication number: 20150118561Abstract: There is provided a process for preparing a crystalline electrode material, the process comprising: providing a liquid bath comprising the electrode material in a melted state; and introducing a precursor of the electrode material into the liquid bath, wherein the electrode material comprises lithium, a metal and phosphate. There is also provided a crystalline electrode material, comprising lithium substituted by less than 0.1 atomic of Na or K; Fe and/or Mn, substituted by less than 0.1 atomic ratio of: (a) Mg, Ca, Al and B, (b) Nb, Zr, Mo, V and Cr, (c) Fe(III), or (d) any combinations thereof; and PO4, substituted by less than 20% atomic weight of an oxyanion selected from SO4, SiO4, BO4, P2O7, and any combinations thereof, the material being in the form of particles having a non-carbon and non-olivine phase on at least a portion of the surface thereof.Type: ApplicationFiled: May 28, 2013Publication date: April 30, 2015Inventors: Michel Gauthier, Dean MacNeil, Joseph Wontcheu, Patrice Chartrand, Guoxian Liang
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Publication number: 20150118560Abstract: The present invention relates to a process for producing electrode materials, which comprises the following steps: (a) mixing the following with one another: (A) at least one phosphorus compound, (B) at least one lithium compound, (C) at least one carbon source, (D1) at least one water-soluble iron compound in which Fe is present in the +2 or +3 oxidation state, (D2) at least one iron source which is different than (D1) and is water-insoluble and in which Fe is present in the zero, +2 or +3 oxidation state, (b) thermally treating the mixture obtained.Type: ApplicationFiled: April 29, 2013Publication date: April 30, 2015Applicant: BASF SEInventors: Bastian Ewald, Ivana Krkljus, Jordan Keith Lampert
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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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Publication number: 20150118559Abstract: A composition for forming an electrode of a lithium secondary battery of the present invention includes: an active material represented by the following general formula (1), which is coated with conductive carbon; a dispersant; a binder; and a solvent, wherein, as the active material, secondary particles with different particle diameters are used in combination with granulated particles wherein the secondary particles are respectively formed from fine primary particles having an average primary particle diameter of 50 to 300 nm. LiFe1-xMxPO4(0?x?1)??General formula (1): (In the formula, M denotes a metallic element of at least one type selected from the group consisting of Mn, Co, Ni and V.Type: ApplicationFiled: April 26, 2013Publication date: April 30, 2015Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYOCOLOR CO., LTD.Inventors: Takanori Ito, Akihiko Hatemata, Yasuyuki Moroishi, Yoshiyuki Onai, Jyunko Sakaki
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Publication number: 20150118558Abstract: An electrode material of the present invention includes surface-coated LixAyDzPO4 particles obtained by coating surfaces of LixAyDzPO4 (in which, A represents one or more selected from the group consisting of Co, Mn, Ni, Fe, Cu and Cr, D represents one or more selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, Y and rare earth elements, 0<x?2, 0<y?1, and 0?z?1.5) particles with a carbonaceous coat, and an elution amount of Li is in a range of 200 ppm to 700 ppm and an elution amount of P is in a range of 500 ppm to 2000 ppm when the surface-coated LixAyDzPO4 particles are immersed in a sulfuric acid solution having a hydrogen-ion exponent of 4 for 24 hours.Type: ApplicationFiled: January 22, 2013Publication date: April 30, 2015Inventors: Akinori Yamazaki, Yoshitaka Yamamoto, Takao Kitagawa, Hirofumi Yasumiishi
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Publication number: 20150118563Abstract: 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: ApplicationFiled: December 31, 2014Publication date: April 30, 2015Inventor: Chaohui Chen
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Patent number: 9017876Abstract: A method of producing a positive electrode active material, comprising the steps of: preparing a solution by dissolving, in a solvent, respective predetermined amounts of a lithium source, a M source, a phosphorus source and a X source necessary for forming a positive electrode active material represented by the following general formula (1) having an olivine structure; gelating the obtained solution by addition of a cyclic ether; and calcinating the generated gel to obtain a carbon-coated lithium-containing composite oxide, wherein the positive electrode active material is represented by the general formula (1): LixMyP1-zXzO4??(1) wherein M is at least one element selected from the group consisting of Fe, Ni, Mn, Zr, Sn, Al and Y, X is at least one selected from the group consisting of Si and Al, and 0<x?2, 0.8?y?1.2, 0?z?1.Type: GrantFiled: October 18, 2011Date of Patent: April 28, 2015Assignee: Sharp Kabushiki KaishaInventors: Toshitsugu Sueki, Motoaki Nishijima, Koji Ohira, Shogo Esaki, Isao Tanaka, Yukinori Koyama, Katsuhisa Tanaka, Koji Fujita, Shunsuke Murai
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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: 20150111104Abstract: 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: ApplicationFiled: March 5, 2013Publication date: April 23, 2015Applicant: Robert Bosch GmbHInventors: Christine Engel, Ulrich Eisele, Andre Moc
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Publication number: 20150111111Abstract: An all-solid battery that includes a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer. At least one of the positive electrode layer and the negative electrode layer contains an electrode active material and a solid electrolyte, and a difference between a resistivity associated with ion migration and a resistivity associated with electron migration is 0 k?·cm or more and 100 k?·cm or less in the electrode layer containing the electrode active material and the solid electrolyte.Type: ApplicationFiled: December 23, 2014Publication date: April 23, 2015Inventors: Tadaaki Matsumura, Mika Tagami
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Patent number: 9012091Abstract: An as-prepared cathode for a secondary battery, the cathode including an alkaline source material including an alkali metal oxide, an alkali metal sulfide, an alkali metal salt, or a combination of any two or more thereof.Type: GrantFiled: January 29, 2013Date of Patent: April 21, 2015Assignee: UChicago Argonne, LLCInventors: Huiming Wu, Khalil Amine, Ali Abouimrane
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Patent number: 9012081Abstract: Disclosed are an anode active material for secondary batteries, capable of intercalating and deintercalating ions, the anode active material including a core including a crystalline carbon-based material, and a composite coating layer including one or more materials selected from the group consisting of low crystalline carbon and amorphous carbon, and a hydrophilic material containing oxide capable of intercalating and deintercalating ions, wherein the composite coating layer includes a matrix comprising one component selected from (a) the one or more materials selected from the group consisting of low crystalline carbon and amorphous carbon and (b) the hydrophilic material containing oxide capable of intercalating and deintercalating ions, and a filler including the other component, incorporated in the matrix, and a secondary battery including the anode active material.Type: GrantFiled: June 5, 2013Date of Patent: April 21, 2015Assignee: LG Chem, Ltd.Inventors: Sung-Kyun Chang, WonSeok Chang, Je Young Kim, JungMin Han
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Patent number: 9012083Abstract: The present invention relates to an electrode for the lithium iron phosphate battery and the manufacturing method thereof, and more particularly, to a coated electrode for the lithium iron phosphate with a smooth surface and without de-powder phenomenon and the manufacturing method thereof. The electrode provided in the present invention uses an arabic gum modified by adding silicone-based gel into the arabic gum. The lithium iron phosphate active material and the conductive agent in a certain ratio are added into the aforesaid modified arabic gums, after the mixing process, a liquid slurry with a certain viscosity is formed. Then, the liquid slurry is coated uniformly onto a positive current collector of aluminum foil or mesh, and followed by the process like drying, calendaring, cutting and etc. to form positive electrode plate. The electrode in the present invention has the characteristics of smooth surface and no de-powder phenomenon.Type: GrantFiled: December 17, 2009Date of Patent: April 21, 2015Assignee: Hengdian Group DMEGC Magnetic Limited CompanyInventors: Dayang Cheng, Guoguang Wang, Daxin Bao, Shijin He
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Publication number: 20150104710Abstract: A cathode active material of the present invention is a cathode active material having a composition represented by General Formula (1) below, LiFe1?xMxP1-ySiyO4??(1), where: an average valence of Fe is +2 or more; M is an element having a valence of +2 or more and is at least one type of element selected from the group consisting of Zr, Sn, Y, and Al; the valence of M is different from the average valence of Fe; 0<x?0.5; and y=x×({valence of M}?2)+(1?x)×({average valence of Fe}?2). This provides a cathode active material that not only excels in terms of safety and cost but also can provide a long-life battery.Type: ApplicationFiled: December 18, 2014Publication date: April 16, 2015Inventors: Koji OHIRA, Motoaki NISHIJIMA, Toshitsugu SUEKI, Shogo ESAKI, Isao TANAKA, Yukinori KOYAMA, Katsuhisa TANAKA, Koji FUJITA, Shunsuke MURAI
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Publication number: 20150104706Abstract: The disclosure provides a Ni—Mn composite oxalate powder, including a plurality of biwedge octahedron particles represented by the general formula: NiqMnxCoyMzC2O4.nH2O, wherein q+x+y+z=1, 0<q, x<1, 0?y<1, 0?z<0.15, 0?n?5, and M is at least one of Mg, Sr, Ba, Cd, Zn, Al, Ga, B, Zr, Ti, Ca, Ce, Y, Nb, Cr, Fe and V. The above powder may be further calcined with a lithium salt to form a lithium transition metal oxide powder for use as a positive electrode material in lithium ion-batteries.Type: ApplicationFiled: December 26, 2013Publication date: April 16, 2015Applicants: NATIONAL TAIWAN UNIVERSITY, INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Hung-Chun WU, Yu-Ting CHEN, Nae-Lih WU, Wen-Chin CHEN, Shih-Chieh LIAO, Yih-Chyng WU
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Publication number: 20150104708Abstract: Provided are a high energy density oxide anode material for lithium ion battery, preparation process and use thereof. Said anode material includes a main part of the anode material and a covering layer. Said main part includes a shell and a core inside the shell. The material of said core is Li1+x[Ni1?y?zCoyMnz]O2 wherein ?0.1?x?0.2, 0?y?0.5, 0?z?0.5 and 0?y+z?0.7. The material of said shell is Li1+a[Co1?bXb]O2, wherein ?0.1?a?0.2, 0?b?0.5, and X is selected from Al, Mg, Cu, Zr, Ti, Cr, V, Fe, Mn, Ni, or combination thereof. Otherwise, The material of said main part is a mixture of Li1+x[Ni1?y?zCoyMnz]O2 and LiCoO2, wherein ?0.1?x?0.2, 0?y?0.5, 0<z?0.5 and 0?y+z?0.7. The material of said covering layer is selected from Al2O3, ZrO2, MgO, SiO2, ZnO2, TiO2, Y2O3, LiAlO2, or combination thereof. Said anode material has the advantages of high capacity, good cycle performance, low surface activity, high voltage resistance and fine safety.Type: ApplicationFiled: December 22, 2014Publication date: April 16, 2015Inventors: Yujing BI, Deyu WANG, Jun LI
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Publication number: 20150104707Abstract: The present disclosure refers to a cathode material composite having improved conductivity, and a cathode and electrochemical device having the cathode material composite. In accordance with one embodiment of the present disclosure, a conductive polymer is positioned on the surface of a shell present in the form of a tetragonal structure in the lithium manganese oxide, thereby enhancing electrical conductivity to be highly involved in reaction around 3V, and providing a conductive path to improve the capacity, life and rate characteristics of an electrochemical device.Type: ApplicationFiled: December 18, 2014Publication date: April 16, 2015Applicant: LG Chem, Ltd.Inventors: Ji-Hye Park, Song-Taek Oh, Hyeok-Moo Lee
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Publication number: 20150104709Abstract: A cathode active material of the present invention is a cathode active material having a composition represented by General Formula (1) below, LiFe1-xMxP1-ySiyO4??(1), where: an average valence of Fe is +2 or more; M is an element having a valence of +2 or more and is at least one type of element selected from the group consisting of Zr, Sn, Y, and Al; the valence of M is different from the average valence of Fe; 0<x?0.5; and y=x×({valence of M}?2)+(1?x)×({average valence of Fe}?2). This provides a cathode active material that not only excels in terms of safety and cost but also can provide a long-life battery.Type: ApplicationFiled: December 18, 2014Publication date: April 16, 2015Inventors: Koji OHIRA, Motoaki NISHIJIMA, Toshitsugu SUEKI, Shogo ESAKI, Isao TANAKA, Yukinori KOYAMA, Katsuhisa TANAKA, Koji FUJITA, Shunsuke MURAI
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Patent number: 9005481Abstract: The invention relates to a method for manufacturing a composite positive electrode active material being a composite of a positive electrode active material and carbon nanotubes. The manufacturing method includes preparing an aqueous solution of a starting material of a positive electrode active material containing a starting material of the positive electrode active material, and an aqueous solution of solubilized carbon nanotubes containing the carbon nanotubes and a solubilizing material that is composed of a water-soluble polymer whose solubilization retention rate of carbon nanotubes does not decrease with rising temperature; and synthesizing a positive electrode active material-carbon nanotube composite by mixing the aqueous solution of a starting material of a positive electrode active material and the aqueous solution of solubilized carbon nanotubes, and performing hydrothermal synthesis.Type: GrantFiled: January 14, 2011Date of Patent: April 14, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Satoshi Yoshida, Hiroki Kubo, Masahiro Iwasaki
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Patent number: 9005810Abstract: A cathode active material having a composition represented by the following formula (1) LiMn1?xMxP1?ySiyO4??(1) wherein M is at least one kind of element selected from the group consisting of Zr, Sn, Y and Al; x is within a range of 0<x?0.5; and y is within a range of 0<y?0.5.Type: GrantFiled: June 27, 2011Date of Patent: April 14, 2015Assignee: Sharp Kabushiki KaishaInventors: Koji Ohira, Motoaki Nishijima