Alkalated Cobalt (co) Chalcogenide Patents (Class 429/231.3)
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Publication number: 20130202956Abstract: Electrodeposition and energy storage devices utilizing an electrolyte having a surface-smoothing additive can result in self-healing, instead of self-amplification, of initial protuberant tips that give rise to roughness and/or dendrite formation on the substrate and anode surface. For electrodeposition of a first metal (M1) on a substrate or anode from one or more cations of M1 in an electrolyte solution, the electrolyte solution is characterized by a surface-smoothing additive containing cations of a second metal (M2), wherein cations of M2 have an effective electrochemical reduction potential in the solution lower than that of the cations of M1.Type: ApplicationFiled: June 13, 2012Publication date: August 8, 2013Applicant: BATTELLE MEMORIAL INSTITUTEInventors: Wu Xu, Jiguang Zhang, Gordon L. Graff, Xilin Chen, Fei Ding
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Patent number: 8501352Abstract: A composite material having: particles of a first lithium-metal oxide compound, particles of a conductive second lithium-metal oxide compound, a conductive matrix, and a polymeric binder.Type: GrantFiled: February 3, 2006Date of Patent: August 6, 2013Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Arnold Stux, Karen Lyons
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Publication number: 20130196235Abstract: A lithium-ion battery including an electrodeposited anode material having a micron-scale, three-dimensional porous foam structure separated from interpenetrating cathode material that fills the void space of the porous foam structure by a thin solid-state electrolyte which has been reductively polymerized onto the anode material in a uniform and pinhole free manner, which will significantly reduce the distance which the Li-ions are required to traverse upon the charge/discharge of the battery cell over other types of Li-ion cell designs, and a procedure for fabricating the battery are described. The interpenetrating three-dimensional structure of the cell will also provide larger energy densities than conventional solid-state Li-ion cells based on thin-film technologies. The electrodeposited anode may include an intermetallic composition effective for reversibly intercalating Li-ions.Type: ApplicationFiled: August 2, 2012Publication date: August 1, 2013Applicant: Prieto Battery, Inc.Inventors: Amy L. Prieto, James M. Mosby, Derek C. Johnson, Matthew T. Rawls
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Publication number: 20130189579Abstract: A method of treating an electrode for a battery to enhance its performance is disclosed. By depositing a layer of porous carbon onto the electrode, its charging and discharging characteristics, as well as chemical stability may be improved. The method includes creating a plasma that includes carbon and attracting the plasma toward the electrode, such as by biasing a platen on which the electrode is disposed. In some embodiments, an etching process is also performed on the deposited porous carbon to increase its surface area. The electrode may also be exposed to a hydrophilic treatment to improve its interaction with the electrolyte. In addition, a battery which includes at least one electrode treated according to this process is disclosed.Type: ApplicationFiled: January 25, 2012Publication date: July 25, 2013Applicant: VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.Inventors: Blake L. Darby, Ludovic Godet, Xianfeng Lu, Tristan Yonghui Ma
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Publication number: 20130183579Abstract: A positive active material for a rechargeable lithium battery includes a core including a lithium composite metal oxide selected from the group consisting of compounds represented by the following Chemical Formula 1, Chemical Formula 2, and combinations thereof; and a shell on the core, the shell including lithium iron phosphate (LiFePO4), and the lithium iron phosphate being present in an amount in a range of about 5 to about 15 wt % based on the total weight of the positive active material. LixMO2 ??[Chemical Formula 1] (wherein, in the above Chemical Formula 1, M is one or more transition elements, and 1?x?1.1) yLi2MnO3·(1?y)LiM?O2 ??[Chemical Formula 2] (wherein, in the above Chemical Formula 2, M? is one or more transition elements, and 0?x?1).Type: ApplicationFiled: July 27, 2012Publication date: July 18, 2013Inventors: Seung-Mo Kim, Jun-Sik Jeoung
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Publication number: 20130183586Abstract: A process for producing electrode materials, which comprises treating a mixed oxide which comprises Li and at least one transition metal as cations with at least one boron compound which has at least one alkoxy group or at least one halogen atom per molecule.Type: ApplicationFiled: September 9, 2011Publication date: July 18, 2013Applicant: BASF SEInventors: Martin Schulz-Dobrick, Bastian Ewald, Jordan Keith Lampert
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Patent number: 8486566Abstract: A positive electrode for a lithium-ion secondary battery includes a positive-electrode mixture layer, which includes a positive-electrode active material containing lithium composite oxide, a conductive material, and a binder, and a current collector. The positive-electrode mixture layer contains a compound including sulfur and/or phosphorous, a first polymer serving as a main binder, and a second polymer different from the first polymer.Type: GrantFiled: November 3, 2008Date of Patent: July 16, 2013Assignee: Sony CorporationInventors: Masanori Soma, Kenichi Kawase, Masayuki Ihara, Atsumichi Kawashima, Kazumi Izumitani
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Patent number: 8486564Abstract: Active material particles are provided that exhibit performance suitable for increasing the output of a lithium secondary battery and little deterioration due to charge-discharge cycling. The active material particles provided by the present invention have a hollow structure having secondary particles including an aggregate of a plurality of primary particles of a lithium transition metal oxide, and a hollow portion formed inside the secondary particles, and through holes that penetrates to the hollow portion from the outside are formed in the secondary particles. BET specific surface area of the active material particles is 0.5 to 1.9 m2/g.Type: GrantFiled: September 14, 2012Date of Patent: July 16, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Sumitomo Metal Mining Co., Ltd.Inventors: Hiroki Nagai, Masahiro Morita, Kensaku Mori, Shin Imaizumi, Kenji Ikeuchi, Toshiyuki Osako, Hiroyuki Toya
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Publication number: 20130177809Abstract: 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: ApplicationFiled: September 17, 2010Publication date: July 11, 2013Inventor: Hiroki Nagai
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Publication number: 20130171524Abstract: Disclosed is a positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the positive active material. The positive active material includes a lithiated intercalation compound capable of reversibly intercalating and deintercalating lithium and a metal oxide represented by the following Chemical Formula 1. LixMyM?1-yO4??[Chemical Formula 1] In the above Chemical Formula M, M?, x, and y are the same as defined in the detailed description. The positive active material easily provides lithium needed for the irreversible chemical/physical reaction at a negative electrode during the initial charge reaction, and thus increases charge capacity of a battery, decreases its irreversible capacity, and resultantly improves its cycle life.Type: ApplicationFiled: August 30, 2012Publication date: July 4, 2013Applicants: SK Innovation Co., Ltd., UNIST Academy-Industry Research CorporationInventors: Jaephil CHO, Mijung Noh
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Publication number: 20130164622Abstract: A positive active material for a rechargeable lithium battery including a compound represented by the following Chemical Formula 1: LixMyCozPO4??Chemical Formula 1 wherein 0?x?2, 0.98?y?1, 0<z?0.02, M is selected from the group consisting of V, Mn, Fe, Ni, and combinations thereof, and the compound exhibits a peak at a 2? value in a range of 40.0 degrees to 41.0 degrees in an X-ray diffraction pattern measured using CuK? radiation, is disclosed.Type: ApplicationFiled: August 13, 2012Publication date: June 27, 2013Inventors: Han-Eol Park, Sang-In Park, Ki-Hyun Kim, Ji-Hyun Kim, Jay-Hyok Song, Yong-Chan You, Ha-Young Lee
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Publication number: 20130164623Abstract: The present invention provides a positive electrode active material. The positive electrode active material is represented by the following formula (I) and has a BET specific surface area of larger than 5 m2/g and not larger than 15 m2/g: LixM1yM31-yO2??(I) wherein M1 is at least one transition metal element selected from Group 5 elements and Group 6 elements of the Periodic Table, M3 is at least one transition metal element other than M1 and selected from among transition metal elements excluding Fe, x is not less than 0.9 and not more than 1.3, and y is more than 0 and less than 1.Type: ApplicationFiled: August 22, 2011Publication date: June 27, 2013Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Maiko Saka, Cedric Pitteloud, Tetsuri Nakayama, Kenji Takamori
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Publication number: 20130157133Abstract: A method of synthesizing defect-free phospho-olivine materials is disclosed. The method is based on direct hydrothermal synthesis of phospho-olivine compound(s) and subsequent lattice reordering at or near the transition temperature to eliminate lattice defects or on one-pot in situ hydrothermal synthesis of phospho-olivine compound(s), where the cation ordering occurs during dwell time after rapid synthesis to eliminate lattice defects. The disclosed methods produce defect-free phospho-olivine compound(s) having a crystal lattice with a Pnma space group. In order to determine the exact transition temperature for complete removal of single- or mixed-transition metals from lithium sites or to monitor the crystal growth and removal of single- or mixed-transition metals from lithium sites during the hydrothermal synthesis, the method encompasses a procedure for determining and monitoring defects in the phospho-olivine phases using X-ray diffraction.Type: ApplicationFiled: November 14, 2012Publication date: June 20, 2013Applicant: Brookhaven Science Associates, LLCInventor: Brookhaven Science Associates, LLC
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Publication number: 20130149567Abstract: Lithium-ion battery comprising: (a) a positive electrode comprising an amorphous chalcogenide which comprises lithium ions or which can conduct lithium ions; (b) a negative electrode; (c) a separator between the positive electrode and the negative electrode, wherein the separator comprises a non-woven material composed of fibres, preferably polymer fibres; (d) a non-aqueous electrolyte.Type: ApplicationFiled: May 17, 2011Publication date: June 13, 2013Applicant: LI-TEC BATTERY GMBHInventor: Tim Schaefer
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Patent number: 8460825Abstract: A lithium ion secondary battery including a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and a nonaqueous electrolyte. The positive electrode active material is a lithium transition metal oxide that contains niobium and is represented by xLi[Li1/3Mn2/3-qNbq]O2·(1?x)LiM1-rNbrO2 (0<x<1, 0<xq+(1?x)r?0.3, 0?q?0.3, 0?r?0.3, and M: at least one element selected from the group consisting of nickel, cobalt, and manganese). During initial charging, oxygen desorbs from the positive electrode active material.Type: GrantFiled: August 26, 2010Date of Patent: June 11, 2013Assignee: SANYO Electric Co., Ltd.Inventors: Katsunori Yanagida, Koh Masahara, Masahisa Fujimoto
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Publication number: 20130136973Abstract: This disclosure provides systems, methods and apparatus for batch fabrication of a rechargeable lithium-ion battery using a silicon substrate as an anode. In one aspect, a pre-formed silicon substrate is provided. A plurality of first openings can be formed on one side of the substrate, which can have a high height to width aspect ratio. A plurality of second openings can be formed alternatingly, or in interdigitated fashion, with the first openings on another side of the substrate that is opposite the first side. A solid electrolyte layer can be deposited on the second side of the substrate in the second openings, and a cathode material can be formed into the second openings and over the electrolyte layer on the second side of the substrate.Type: ApplicationFiled: November 30, 2011Publication date: May 30, 2013Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.Inventor: Ravindra V. Shenoy
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Patent number: 8449792Abstract: Provided is a cathode for lithium secondary batteries comprising a combination of one or more compounds selected from Formula 1 and one or more compounds selected from Formula 2. The cathode provides a high-power lithium secondary battery composed of a non-aqueous electrolyte which exhibits long lifespan, long-period storage properties and superior stability at ambient temperature and high temperatures.Type: GrantFiled: October 25, 2011Date of Patent: May 28, 2013Assignee: LG Chem, Ltd.Inventors: Sung Kyun Chang, Hong-Kyu Park, Sinyoung Park, Soo Min Park, Ji Eun Lee
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Publication number: 20130130103Abstract: A cathode and a battery including a cathode active material including a layer-structured material having a composition of xLi2MO3-(1-x)LiMeO2; and a metal oxide having a perovskite structure. The cathode active material may have improved structural stability by intermixing a metal oxide having a similar crystalline structure with the layer-structured material, and thus, life and capacity characteristics of a cathode and a lithium battery including the metal oxide may be improved.Type: ApplicationFiled: October 17, 2012Publication date: May 23, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Myung-hoon KIM, Kyu-sung PARK, Min-sik PARK, Jin-hwan PARK
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Publication number: 20130115515Abstract: Provided herein is an electrode active material comprising a lithium metal oxide and an overcharge protection additive having an operating voltage higher than the operating voltage of the lithium metal oxide.Type: ApplicationFiled: October 30, 2012Publication date: May 9, 2013Applicant: JOHNSON CONTROLS TECHNOLOGY LLCInventor: JOHNSON CONTROLS TECHNOLOGY LLC
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Publication number: 20130115513Abstract: An electrode active material includes a core capable of intercalating and deintercalating lithium; and a surface treatment layer disposed on at least a portion of a surface of the core, wherein the surface treatment layer includes a lithium-free oxide having a spinel structure, and an intensity of an X-ray diffraction peak corresponding to impurity phase of the lithium-free oxide, when measured using Cu—K? radiation, is at a noise level of an X-ray diffraction spectrum or less.Type: ApplicationFiled: July 23, 2012Publication date: May 9, 2013Applicants: SAMSUNG CORNING PRECISION MATERIALS CO., LTD., SAMSUNG SDI CO., LTD.Inventors: Won-chang CHOI, Gue-sung KIM, Min-sang SONG, Young-min CHOI, Ryoung-hee KIM, So-yeon KIM
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Patent number: 8435680Abstract: A rechargeable lithium battery including: a positive electrode including a nickel-based positive active material; a negative electrode including a negative active material; and an electrolyte including a non-aqueous organic solvent, a lithium salt, a first fluoroethylene carbonate additive, a second vinylethylene carbonate additive, and a third alkane sultone additive, wherein when the battery is thicker than about 5mm, a mixing weight ratio of the first fluoroethylene carbonate additive to the second vinylethylene carbonate additive ranges from about 5:1 to about 10:1, or when the battery is thinner than about 5 mm, the mixing weight ratio of the first fluoroethylene carbonate additive to the second vinylethylene carbonate additive ranges from about 1:1 to about 4:1.Type: GrantFiled: June 29, 2010Date of Patent: May 7, 2013Assignee: Samsung SDI Co., Ltd.Inventors: Na-Rae Park, Jin-Sung Kim, Su-Hee Han, Jin-Hyunk Lim
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Patent number: 8435674Abstract: A lithium battery includes a cathode; an anode; and an organic electrolyte solution. The cathode includes cathode active materials that discharge oxygen during charging and discharging. The organic electrolyte solution includes: lithium salt; an organic solvent, and at least one selected from the group consisting of compounds represented by Formula 1 and Formula 2 below: P(R1)a(OR2)b??Formula 1 O?P(R1)a(OR2)b.??Formula 2 R1 is each independently a substituted or unsubstituted C1-C20 alkyl group or a substituted or unsubstituted C6-C30 aryl group. R2 is each independently a substituted or unsubstituted C1-C20 alkyl group or a substituted or unsubstituted C6-C30 aryl group. a and b are each independently in a range of about 0 to about 3 and a+b=3.Type: GrantFiled: August 16, 2010Date of Patent: May 7, 2013Assignee: Samsung SDI Co., Ltd.Inventors: Dong-joon Lee, Dong-min Im, Young-gyoon Ryu, Seok-soo Lee
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Publication number: 20130095377Abstract: An electrochemical cell including an anode comprising a carbonaceous material, where the carbonaceous material is capable of reversibly incorporating lithium ions therein and lithium metal on the surface thereof, a cathode capable of reversibly incorporating therein lithium ions, and a non-aqueous electrolyte in contact with the anode and the cathode, where the ratio of the capacity to reversibly incorporate lithium ions of the cathode to the capacity to reversibly incorporate lithium ions in the form of LiC6 of the carbonaceous material of the anode is equal to or larger than 4.5:1.Type: ApplicationFiled: October 22, 2012Publication date: April 18, 2013Applicant: TADIRAN BATTERIES LTD.Inventor: Tadiran Batteries Ltd.
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Publication number: 20130095385Abstract: The present invention relates to a carbon-containing composite material of particles of an oxygen-containing lithium transition metal compound which are coated with essentially two carbon-containing layers, a method for its production as well as an electrode containing the composite material.Type: ApplicationFiled: April 14, 2011Publication date: April 18, 2013Applicant: Sued-Chemie IP GmbH & Co. KGInventors: Nicolas Tran, Christian Vogler, Peter Bauer
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Patent number: 8420259Abstract: One exemplary embodiment includes an electrode including an embedded compressible or shape changing component.Type: GrantFiled: October 14, 2009Date of Patent: April 16, 2013Assignee: GM Global Technology Operations LLCInventors: Xinran Xiao, Adam T Timmons, Hamid G. Kia
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Publication number: 20130089786Abstract: An electrode active material for a lithium secondary battery, a method of preparing the electrode active material, an electrode for a lithium secondary battery which includes the same, a lithium secondary battery using the electrode. The electrode active material includes a core active material and a coating layer including magnesium aluminum oxide (MgAlO2) and formed on the core active material, 1s binding energy peaks of oxygen (O) in the electrode active material measured by xray photoelectron spectroscopy (XPS) are shown at positions corresponding to 529.4±0.5 eV, about 530.7 eV, and 531.9±0.5 eV, and a peak intensity at the position corresponding to 529,4±0.5 eV is stronger than a peak intensity at the position corresponding to about 530.7 eV.Type: ApplicationFiled: August 14, 2012Publication date: April 11, 2013Applicant: SAMSUNG SDI CO., LTD.Inventors: Chang-Ui Jeong, Sung-Hwan Moon, Jae-Hyuk Kim, Yury Matulevich, Hee-Young Chu, Myung-Hwan Jeong, Jong-Seo Choi
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Publication number: 20130089787Abstract: Disclosed is a lithium ion secondary battery which includes a positive electrode, a negative electrode and a nonaqueous electrolyte solution. The positive electrode contains, as the positive electrode active material, a lithium-transition metal composite oxide having a layered structure. The positive electrode active material includes at least one metal element M0 from among Ni, Co and Mn, and includes at least one metal element M? from among Zr, Nb and Al, and further includes W. When 2 g of a powder of the positive electrode active material and 100 g of pure water are stirred together to prepare a suspension and the suspension is filtered to obtain a filtrate, the amount of W eluted into the filtrate, as measured by inductively coupled plasma mass spectrometry, is 0.025 mmol or less per gram of filtrate.Type: ApplicationFiled: June 17, 2011Publication date: April 11, 2013Inventor: Hiroki Nagai
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Patent number: 8415052Abstract: A non-aqueous electrolyte battery comprising: a battery case containing aluminum; a positive electrode terminal attached to the battery case; and a negative electrode terminal attached to the battery case and insulated from the battery case, wherein the positive electrode terminal and the battery case are connected through a resistor having resistance of 1? to 1 M?. Otherwise, A non-aqueous electrolyte battery comprising: a battery case containing iron; a negative electrode terminal attached to the battery case; and a positive electrode terminal attached to the battery case and insulated from the battery case, wherein the negative electrode terminal and the battery case are connected through a resistor having resistance of 1? to 1 M?.Type: GrantFiled: January 29, 2010Date of Patent: April 9, 2013Assignee: GS Yuasa International Ltd.Inventors: Hiroaki Yoshida, Nobutaka Imamura
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Patent number: 8415058Abstract: A nonaqueous secondary battery having a positive electrode having a positive electrode mixture layer, a negative electrode, and a nonaqueous electrolyte, in which the positive electrode contains, as an active material, a lithium-containing transition metal oxide containing a metal element selected from the group consisting of Mg, Ti, Zr, Ge, Nb, Al and Sn, the positive electrode mixture layer has a density of 3.Type: GrantFiled: June 12, 2012Date of Patent: April 9, 2013Assignee: Hitachi Maxell, Ltd.Inventors: Hideo Sakata, Fusaji Kita, Kumiko Ishizuka
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Patent number: 8409754Abstract: A positive electrode active material for use in a non-aqueous electrolyte secondary cell comprises a powdery metal oxide (LiCoO2, LiNiO2, LiMn2O4 or the like). When the positive electrode active material is classified with a classification precision index ? of 0.7 or greater so as to obtain a coarse powder having a classification ratio in a range of 0.1% to 5%, a ratio (B/A) of the content (B) of an impurity metal element in the coarse powder obtained by the classification to the content (A) of the impurity metal element in the powder before the classification is 1.5 or less. The contents of the impurity metal elements are compared with respect to Ca, Mn, Fe, Cr, Cu, Zn and the like (exclusive of the metal element constituting the powdery metal oxide). The positive electrode active material for a secondary cell serves to improve cell performance capabilities and production yields.Type: GrantFiled: June 20, 2007Date of Patent: April 2, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Ryo Sakai, Yasuhiro Shirakawa, Hajime Takeuchi, Yasumasa Ooya, Koshin Tanaka, Kazuki Amemiya, Shouta Endou
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Patent number: 8404211Abstract: A method for producing a lithium-containing composite oxide represented by General Formula (1): LixMyMe1?yO2+???(1) where M represents at least one element selected from the group consisting of Ni, Co and Mn, Me represents a metal element that is different from M, 0.95?x?1.10 and 0.1?y?1. A lithium compound and a compound that contains M and Me are baked. The thus-obtained baked product is washed with a washing solution that contains one or more water-soluble polar aprotic solvents such as N-methyl-2-pyrrolidone (NMP), N,N?-dimethylimidazolidinone (DMI) and dimethylsulfoxide (DMSO).Type: GrantFiled: November 17, 2009Date of Patent: March 26, 2013Assignee: Panasonic CorporationInventor: Kozo Watanabe
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Publication number: 20130071745Abstract: An electrode active material, a method of manufacturing the same, and an electrode and a lithium battery utilizing the same. The electrode active material includes a core capable of intercalating and deintercalating lithium and a coating layer formed on at least a portion of a surface of the core, wherein the coating layer includes a composite metal halide having a spinel structure.Type: ApplicationFiled: July 10, 2012Publication date: March 21, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jun-young MUN, Won-chang Choi, Jin-hwan Park
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Publication number: 20130071747Abstract: The disclosure relates to positive electrode material used for Li-ion batteries, a precursor and process used for preparing such materials, and Li-ion battery using such material in its positive electrode. The disclosure describes a higher density LiCoO2 positive electrode material for lithium secondary batteries, with a specific surface area (BET) below 0.2 m2/g, and a volumetric median particle size (d50) of more than 15 ?m. This product has improved specific capacity and rate-capability. Other embodiments of the disclosure are an aggregated Co(OH)2, which is used as a precursor, the electrode mix and the battery manufactured using above-mentioned LiCoO2.Type: ApplicationFiled: November 14, 2012Publication date: March 21, 2013Applicant: UMICOREInventor: Umicore
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Patent number: 8394534Abstract: Lithium rich and manganese rich lithium metal oxides are described that provide for excellent performance in lithium-based batteries. The specific compositions can be engineered within a specified range of compositions to provide desired performance characteristics. Selected compositions can provide high values of specific capacity with a reasonably high average voltage. Compositions of particular interest can be represented by the formula, xLi2MnO3.(1?x)LiNiu+?Mnu??CowAyO2. The compositions undergo significant first cycle irreversible changes, but the compositions cycle stably after the first cycle.Type: GrantFiled: August 27, 2010Date of Patent: March 12, 2013Assignee: Envia Systems, Inc.Inventors: Herman A. Lopez, Subramanian Venkatachalam, Deepak Kumaar Kandasamy Karthikeyan, Sujeet Kumar
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Patent number: 8394299Abstract: Provided is a transition metal precursor comprising a composite transition metal compound represented by Formula I, as a transition metal precursor used in the preparation of a lithium-transition metal composite oxide: M(OH1?x)2??(1) wherein M is two or more selected from the group consisting of Ni, Co, Mn, Al, Cu, Fe, Mg, B, Cr and transition metals of period 2 in the Periodic Table of the Elements; and 0<x<0.5.Type: GrantFiled: April 2, 2009Date of Patent: March 12, 2013Assignee: LG Chem, Ltd.Inventors: Ho Suk Shin, Sung Kyun Chang, Hong-Kyu Park, Seung Tae Hong, Sinyoung Park, Youngsun Choi
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Patent number: 8389160Abstract: Positive electrode active materials are described that have a very high specific discharge capacity upon cycling at room temperature and at a moderate discharge rate. Some materials of interest have the formula Li1+xNi?Mn?CO?O2, where x ranges from about 0.05 to about 0.25, ? ranges from about 0.1 to about 0.4, ? ranges from about 0.4 to about 0.65, and ? ranges from about 0.05 to about 0.3. The materials can be coated with a metal fluoride to improve the performance of the materials especially upon cycling. Also, the coated materials can exhibit a very significant decrease in the irreversible capacity lose upon the first charge and discharge of the cell. Methods for producing these materials include, for example, a co-precipitation approach involving metal hydroxides and sol-gel approaches.Type: GrantFiled: October 7, 2008Date of Patent: March 5, 2013Assignee: Envia Systems, Inc.Inventors: Subramanian Venkatachalam, Herman Lopez, Sujeet Kumar
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Patent number: 8389162Abstract: An electrolyte for a rechargeable lithium battery that includes a non-aqueous organic solvent, a lithium salt, and an electrolyte additive. The electrolyte additive includes 2 to 6 wt % of succinonitrile, 2 to 6 wt % of alkane sultone, and 1 to 3 wt % of vinylethylene carbonate based on the total weight of the electrolyte.Type: GrantFiled: September 15, 2009Date of Patent: March 5, 2013Assignee: Samsung SDI Co., Ltd.Inventors: Duck-Chul Hwang, Sang-Min Lee, Kyoung-Han Yew, Sang-Jin Kim
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Publication number: 20130052535Abstract: A lithium ion secondary battery capable of improving the lithium ion input-output characteristics. An active material capable of storing and releasing lithium ions is a Li complex oxide or a Li complex oxoacid salt. A plurality of primary particles have a particle size distribution with 1 nm<D10<65 nm, 5 nm<D50<75 nm, and 50 nm<D90<100 nm. The maximum peak pore size A in a pore size distribution as measured by a mercury intrusion technique is 10 nm?A?75 nm. The ratio B/A of the maximum peak pore size A and the crystallite size B is 0.5?B/A?1.Type: ApplicationFiled: May 2, 2012Publication date: February 28, 2013Applicant: SONY CORPORATIONInventors: Asuki Yanagihara, Satoshi Fujiki, Yosuke Hosoya, Guohua Li
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Publication number: 20130052534Abstract: A cathode includes a lithium transition metal complex compound including lithium, one, or two or more transition metals, magnesium, and oxygen as constituent elements. In a standardized X-ray absorption spectrum of the lithium transition metal complex compound measured by an X-ray absorption spectroscopic method, a first absorption edge having absorption edge energy E1 in X-ray absorption intensity of about 0.5 exits in a range where X-ray energy is from about 1303 eV to about 1313 eV both inclusive, in a discharged state in which a discharge voltage is about 3.0 V, and a second absorption edge having absorption edge energy E2 in X-ray absorption intensity of about 0.5 exits, in a charged state in which a charge voltage V is from about 4.3 V to about 4.5 V both inclusive. The absorption edge energies E1 and E2 and the charge voltage V satisfy a relation of E2?E1?(V?4.25)×4.Type: ApplicationFiled: August 13, 2012Publication date: February 28, 2013Applicant: SONY CORPORATIONInventors: Satoshi Fujiki, Hirotaka Fukudome, Kazunari Motohashi, Yosuke Hosoya, Yoshihiro Kudo
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Patent number: 8383269Abstract: A rechargeable lithium-ion battery includes a positive electrode having a first capacity and a negative electrode having a second capacity that is less than the first capacity such that the battery has a negative-limited design. The negative electrode includes a lithium titanate active material. A liquid electrolyte that includes a lithium salt dissolved in at least one non-aqueous solvent a porous polymeric separator are located between the positive electrode and negative electrode. The separator is configured to allow lithium ions to flow through the separator.Type: GrantFiled: April 13, 2011Date of Patent: February 26, 2013Assignee: Medtronic, Inc.Inventors: Erik R. Scott, Gaurav Jain, Kevin W. Eberman, Craig L. Schmidt
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Publication number: 20130040201Abstract: The present invention provides a surface modified cathode and method of making surface modified cathode with high discharge capacity and rate capability having a lithium-excess Li[M1-yLiy]O2 (M=Mn, Co, and Ni or their combinations and 0<y?0.33) cathode surface with a surface modification comprising lithium-ion coated sample conductor, or an electronic conductor, or a mixed lithium-ion and electronic conductor to suppress the elimination of oxide ion vacancies, reduce the solid-electrolyte interfacial (SEI) layer thickness, reduce the irreversible capacity loss in the first cycle, and enhance the rate capability.Type: ApplicationFiled: March 2, 2011Publication date: February 14, 2013Inventors: Arumugam Manthiram, Jun Liu, Baby Reeja Jayan
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Patent number: 8366968Abstract: An active material, an electrode, and a battery which exhibit high safety in overcharging tests, and methods of manufacturing them are provided. The active material comprises a first metal oxide particle 1 and a second metal oxide particle group 2 attached to a surface of the first metal oxide particle 1. The second metal oxide is at least one selected from the group consisting of zirconia, silica, and tin oxide. The first metal oxide particle 1 contains fluorine atoms from its surface to deepest part.Type: GrantFiled: May 26, 2010Date of Patent: February 5, 2013Assignee: TDK CorporationInventors: Hisashi Suzuki, Masayoshi Hirano
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Publication number: 20130029223Abstract: The invention relates to materials for use as electrodes in an alkali-ion secondary (rechargeable) battery, particularly a lithium-ion battery. The invention provides transition-metal compounds having the ordered-olivine or the rhombohedral NASICON structure and the polyanion (PO4)3? as at least one constituent for use as electrode material for alkali-ion rechargeable batteries.Type: ApplicationFiled: October 4, 2012Publication date: January 31, 2013Inventors: Michel Armand, John B. Goodenough, Akshaya K. Padhi, Kirakodu S. Nanjundaswamy, Christian Masquelier
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Publication number: 20130029224Abstract: An electrochemical generator comprising a first type of electrochemical cell, a so-called <<high energy>> cell and a second type of electrochemical cell a so-called <<safety>> cell is provided.Type: ApplicationFiled: January 12, 2011Publication date: January 31, 2013Applicant: Commissariat a l'energie atomique et aux energies alternativesInventors: Florence Fusalba, Sébastien Martinet
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Publication number: 20130029225Abstract: A secondary battery includes: a cathode including an active material; an anode; and an electrolytic solution. The active material has a composition represented by Formula (1) described below. A median diameter (D90) of the active material is from about 10.5 micrometers to about 60 micrometers both inclusive, the median diameter (D90) being measured by a laser diffraction method. A half bandwidth (2?) of a diffraction peak corresponding to a (020) crystal plane of the active material is from about 0.15 degrees to about 0.24 degrees both inclusive, the half bandwidth (2?) being measured by an X-ray diffraction method. LiaMnbFecMdPO4??(1) where M represents one or more of Mg, Ni, Co, Al, W, Nb, Ti, Si, Cr, Cu, and Zn; and 0<a?2, 0<b<1, 0<c<1, 0?d<1, and b+c+d=1 are established.Type: ApplicationFiled: July 25, 2012Publication date: January 31, 2013Applicant: SONY CORPORATIONInventors: Takaaki Matsui, Tadashi Matsushita, Takehiko Ishii
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Publication number: 20130022873Abstract: A method of growing electrochemically active materials in situ within a dispersed conductive matrix to yield nanocomposite cathodes or anodes for electrochemical devices, such as lithium-ion batteries. The method involves an in situ formation of a precursor of the electrochemically active materials within the dispersed conductive matrix followed by a chemical reaction to subsequently produce the nanocomposite cathodes or anodes, wherein: the electrochemically active materials comprise nanocrystalline or microcrystalline electrochemically active metal oxides, metal phosphates or other electrochemically active materials; the dispersed conductive matrix forms an interconnected percolation network of electrically conductive filaments or particles, such as carbon nanotubes; and the nanocomposite cathodes or anodes comprise a homogeneous distribution of the electrochemically active materials within the dispersed conductive matrix.Type: ApplicationFiled: July 19, 2012Publication date: January 24, 2013Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Jon Fold von Bulow, Hong-Li Zhang, Daniel E. Morse
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Publication number: 20130022869Abstract: A positive electrode active material for a lithium secondary battery includes a lithium cobalt complex oxide containing an alkali earth metal and a transition metal in a predetermined mixture ratio. A method of preparing the positive electrode active material includes mixing a lithium salt, a transition metal precursor, and an alkali earth metal salt to form a mixture, and performing at least one thermal treatment on the mixture. A positive electrode for a lithium secondary battery includes the positive electrode active material, and a lithium secondary battery includes the positive electrode.Type: ApplicationFiled: May 21, 2012Publication date: January 24, 2013Inventor: Seung-Beob Yi
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Publication number: 20130017453Abstract: A fabrication process for conformal coating of a thin polymer electrolyte layer on nanostructured electrode materials for three-dimensional micro/nanobattery applications, compositions thereof, and devices incorporating such compositions. In embodiments, conformal coatings (such as uniform thickness of around 20-30 nanometer) of polymer Polymethylmethacralate (PMMA) electrolyte layers around individual Ni—Sn nanowires were used as anodes for Li ion battery. This configuration showed high discharge capacity and excellent capacity retention even at high rates over extended cycling, allowing for scalable increase in areal capacity with electrode thickness. Such conformal nanoscale anode-electrolyte architectures were shown to be efficient Li-ion battery system.Type: ApplicationFiled: December 10, 2010Publication date: January 17, 2013Applicant: William Marsh Rice UniversityInventors: Pulickel M. Ajayan, Fung Soung Ou, Manikoth M. Shajiumon, Sanketh R. Gowda, Arava L.M. Reedy
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Patent number: 8354190Abstract: An electrode and an electrode material for lithium electrochemical cells are disclosed. The electrode material is in powder form and has a particle size distribution wherein the measured particle size distribution of the electrode material has a median size D50 ranging from 1.5 ?m and 3 ?m, a D10?0.5 ?m, a D90?10.0 ?m, and a calculated ratio (D90/D10)/D50?3.0 which is indicative of a peak of the measured particle size distribution on the left of the median D50 which improves the loading and energy density of the electrode produced with this electrode material powder.Type: GrantFiled: April 26, 2010Date of Patent: January 15, 2013Assignee: Bathium Canada Inc.Inventors: Frederic Cotton, Patrick LeBlanc, Thierry Guena, Alain Vallee, Jean-Luc Monfort
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Publication number: 20130011738Abstract: A cathode material of a lithium ion secondary battery is provided, which includes a cathode active material and a glassy material coating on a surface of the cathode active material. The glassy material is capable of selectively allowing lithium ions to pass therethrough. The lithium ion secondary battery using the cathode material has the long cycle life and the high safety performance.Type: ApplicationFiled: July 4, 2012Publication date: January 10, 2013Applicant: Microvast New Materials (Huzhou) Co., LTD.Inventor: XIAO-PING ZHOU