The Hetero Ring Is A Cyclic Carbonate Patents (Class 429/330)
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Patent number: 9011709Abstract: The present invention relates to an electrolyte of an energy storage device. An electrolyte composition in accordance with an embodiment of the present invention includes an electrolyte salt, a carbonate solvent, and at least one nitrile solvent of acetonitrile and propionitrile.Type: GrantFiled: March 15, 2013Date of Patent: April 21, 2015Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Jae Hoon Choi, Ji Sung Cho, Eun Sil Kim, Se Woong Paeng, Bae Kyun Kim
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Patent number: 9005822Abstract: Functional electrolyte solvents include compounds having at least one aromatic ring with 2, 3, 4 or 5 substituents, at least one of which is a substituted or unsubstituted methoxy group, at least one of which is a tert-butyl group and at least one of which is a substituted or unsubstituted polyether or poly(ethylene oxide) (PEO) group bonded through oxygen to the aromatic ring, are provided.Type: GrantFiled: March 6, 2013Date of Patent: April 14, 2015Assignee: UChicago Argonne, LLCInventors: Lu Zhang, Zhengcheng Zhang, Khalil Amine
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Publication number: 20150099191Abstract: A homologous series of cyclic carbonate or propylene carbonate (PC) analogue solvents with increasing length of linear alkyl substitutes were synthesized and used as co-solvents with PC for graphite based lithium ion half cells. A graphite anode reaches a capacity around 310 mAh/g in PC and its analogue co-solvents with 99.95% Coulombic efficiency. Cyclic carbonate co-solvents with longer alkyl chains are able to prevent exfoliation of graphite when used as co-solvents with PC. The cyclic carbonate co-solvents of PC compete for solvation of Li ion with PC solvent, delaying PC co-intercalation. Reduction products of PC on graphite surfaces via single-electron path form a stable Solid Electrolyte Interphase (SEI), which allows the reversible cycling of graphite.Type: ApplicationFiled: October 3, 2014Publication date: April 9, 2015Applicant: The Regents of the University of CaliforniaInventors: Gao Liu, Hui Zhao, Sang-Jae Park
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Publication number: 20150084604Abstract: An improved lithium-sulfur battery containing a surface-functionalized carbonaceous material. The presence of the surface-functionalized carbonaceous material generates weak chemical bonds between the functional groups of the surface-functionalized carbonaceous material and the functional groups of the polysulfides, which prevents the polysulfide migration to the battery anode, thereby providing a battery with relatively high energy density and good partial discharge efficiency.Type: ApplicationFiled: September 26, 2013Publication date: March 26, 2015Applicant: EAGLEPICHER TECHNOLOGIES, LLCInventors: Ramanathan THILLAIYAN, Wujun FU, Mario DESTEPHEN, Greg MILLER, Ernest NDZEBET, Umamaheswari JANAKIRAMAN
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Publication number: 20150086876Abstract: The present invention aims to provide an electrolyte solution for forming, for example, a secondary battery having excellent oxidation resistance and high voltage cycle characteristics; an electrochemical device such as a lithium-ion secondary battery that contains the electrolyte solution; and a module that contains the electrochemical device. The present invention provides an electrolyte solution containing a solvent and an electrolyte salt, wherein the solvent contains a fluorine-containing compound (A) represented by formula (1) shown below, and a fluorine-containing compound (B) represented by formula (2) shown below: Rf1OCOOR??(1) wherein Rf1 is a C1-C4 fluorine-containing alkyl group, and R is a C1-C4 non-fluorinated alkyl group, and Rf2OCOORf3??(2) wherein Rf2 and Rf3 are the same or different, and each is a C1-C4 fluorine-containing alkyl group.Type: ApplicationFiled: April 12, 2013Publication date: March 26, 2015Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Mayuko Taeda, Meiten Koh, Aoi Nakazono, Michiru Kagawa, Akiyoshi Yamauchi
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Publication number: 20150086877Abstract: The present invention aims to provide an electrolyte solution for forming, for example, a secondary battery having excellent oxidation resistance and high-temperature storage characteristics; an electrochemical device such as a lithium-ion secondary battery that contains the electrolyte solution; and a module that contains the electrochemical device. The present invention provides an electrolyte solution containing a solvent and an electrolyte salt, wherein the solvent contains a fluorine-containing compound (A) represented by formula (1) shown below in an amount of 0.01 to 20% by mass, and a fluorine-containing compound (B) represented by formula (2) shown below in an amount of 10 to 80% by mass: Rf1OCOOR??(1) wherein Rf1 is a C1-C4 fluorine-containing alkyl group, and R is a C1-C4 non-fluorinated alkyl group, and Rf2OCOORf3??(2) wherein Rf2 and Rf3 are the same or different, and each is a C1-C4 fluorine-containing alkyl group.Type: ApplicationFiled: April 12, 2013Publication date: March 26, 2015Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Shigeaki Yamazaki, Hideo Sakata, Mayuko Taeda, Meiten Koh, Aoi Nakazono, Michiru Kagawa, Akiyoshi Yamauchi
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Patent number: 8980482Abstract: The present invention provides a lithium-ion secondary battery with excellent high-temperature storage characteristics. The lithium-ion secondary battery provided by the present invention has positive and negative electrodes capable of absorbing and desorbing lithium ions, and an electrolyte solution containing a lithium salt as a supporting salt in an organic solvent. The nonaqueous electrolyte contains not only the lithium salt, but also at least one type of dicarboxylic acid as additive A; and at least one type of additive selected from vinylene carbonate, vinylethylene carbonate, ethylene sulfite, and fluoroethylene carbonate as additive B.Type: GrantFiled: August 24, 2009Date of Patent: March 17, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventor: Koji Takahata
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Patent number: 8980483Abstract: An electrolyte contains a solvent and an electrolyte salt. The solvent contains an organic acid and a sulfone compound in combination. The organic acid has a moiety containing an electron-withdrawing group such as a carbonyl group (—C(?O)—) or a sulfonyl group (—S(?O)2—) in the center and hydroxyl groups (—OH) at both ends. The sulfone compound is a cyclic compound having a disulfonic anhydride group (—(O?)2S—O—S(?O)2—) or a carboxylic-sulfonic anhydride group (—(O?)2S—O—C(?O)—).Type: GrantFiled: January 13, 2010Date of Patent: March 17, 2015Assignee: Sony CorporationInventors: Masayuki Ihara, Shinya Wakita, Tadahiko Kubota
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Patent number: 8974973Abstract: The present invention is directed to a starch-based battery system. The starch-based battery system uses a rheological and replaceable starch gluten electrolyte that generates colloidal starch gel adhesive contacted with and/or attached on electrodes to generate current for powering electronic devices. The starch-based battery system that includes control circuit and standard cap module replaces a conventional dry cell battery or is integrated with electronic devices to power, for example, flash-light, lighting ornaments or magnetic actuated motion products and toys. In other embodiments of the invention, the starch-based battery system is integrated into a device for attracting aquatic life forms in an aquatic environment, wherein the starch-based battery powers a light source and/or sound source and also the starch gluten electrolyte acts as bait for attracting aquatic life forms within the aquatic environment.Type: GrantFiled: February 25, 2011Date of Patent: March 10, 2015Inventors: Wing Fai Leung, Po Fong Cheng
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Patent number: 8968938Abstract: Disclosed are a non-aqueous electrolyte comprising a lithium salt and a solvent, the electrolyte containing, based on the weight of the electrolyte, 10-40 wt % of a compound of Formula 1 or its decomposition product, and 1-40 wt % of an aliphatic nitrile compound, as well as an electrochemical device comprising the non-aqueous electrolyte. Also disclosed is an electrochemical device comprising: a cathode having a complex formed between the surface of a cathode active material and an aliphatic nitrile compound; and an anode having formed thereon a coating layer containing a decomposition product of the compound of Formula 1. Moreover, disclosed is an electrochemical device comprising: a cathode having a complex formed between the surface of a cathode active material and an aliphatic nitrile compound; and a non-aqueous electrolyte containing the compound of Formula 1 or its decomposition product.Type: GrantFiled: January 12, 2007Date of Patent: March 3, 2015Assignee: LG Chem, Ltd.Inventors: Young Soo Kim, Soon Ho Ahn, Joon Sung Bae, Cha Hun Ku, Soo Hyun Ha, Duk Hyun Ryu, Sei Lin Yoon
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Patent number: 8962192Abstract: A nonaqueous electrolytic solution that can provide a battery that is low in gas generation, has a large capacity, and is excellent in storage characteristics and cycle characteristics contains an electrolyte and a nonaqueous solvent dissolving the electrolyte and further contains 0.001 vol % or more and less than 1 vol % of a compound represented by Formula (1) in the nonaqueous solvent. Alternatively, the nonaqueous electrolytic solution contains 0.001 vol % or more and less than 5 vol % of a compound represented by Formula (1) in the nonaqueous solvent and further contains at least one compound selected from the group consisting of cyclic carbonate compounds having carbon-carbon unsaturated bonds, cyclic carbonate compounds having fluorine atoms, monofluorophosphates, and difluorophosphates. In Formula (1), R1 to R3 each independently represent an alkyl group of 1 to 12 carbon atoms, which may be substituted by a halogen atom; and n represents an integer of 0 to 6.Type: GrantFiled: March 17, 2008Date of Patent: February 24, 2015Assignee: Mitsubishi Chemical CorporationInventors: Minoru Kotato, Shinichi Kinoshita
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Publication number: 20150050560Abstract: The present invention relates to silicone epoxy compositions, methods for making same and uses therefore. In one embodiment, the silicone epoxy ether compositions of the present invention are silane epoxy polyethers that contain at least one epoxy functionality. In another embodiment, the silicone epoxy ether compositions of the present invention are siloxane epoxy polyethers that contain at least one epoxy functionality. In still another embodiment, the present invention relates to silicone epoxy polyether compositions that are suitable for use as an electrolyte solvent in a lithium-based battery, an electrochemical super-capacitors or any other electrochemical device.Type: ApplicationFiled: January 10, 2013Publication date: February 19, 2015Inventors: Neeraj Gupta, Karthikeyan Sivasubramanian, Monjit Phukan
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Publication number: 20150044573Abstract: The invention relates to lithium 1-trifluoromethoxy-1,2,2,2-tetra-fluoroethanesulphonate, the use of lithium 1-trifluoromethoxy-1,2,2,2-tetra-fluoroethanesulphonate as electrolyte salt in lithium-based energy stores and also ionic liquids comprising 1-trifluoro-methoxy-1,2,2,2-tetrafluoro-ethanesulphonate as anion.Type: ApplicationFiled: February 27, 2013Publication date: February 12, 2015Inventors: Gerd-Volker Röschenthaler, Martin Winter, Stefano Passerini, Katja Vlasov, Nataliya Kalinovich, Christian Schreiner Schreiner, Raphael Wilhelm Schmitz, Ansgar Romek Müller, Rene Schmitz, Tanja Schedlbauer, Alexandra Lex-Balducci, Miriam Kunze
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Publication number: 20150037690Abstract: Electrolytes are described with additives that provide good shelf life with improved cycling stability properties. The electrolytes can provide appropriate high voltage stability for high capacity positive electrode active materials. The core electrolyte generally can comprise from about 1.1M to about 2.5M lithium electrolyte salt and a solvent that consists essentially of fluoroethylene carbonate and/or ethylene carbonate, dimethyl carbonate and optionally no more than about 40 volume percent methyl ethyl carbonate, and wherein the lithium electrolyte salt is selected from the group consisting of LiPF6, LiBF4 and combinations thereof. Desirable stabilizing additives include, for example, dimethyl methylphosphonate, thiophene or thiophene derivatives, and/or LiF with an anion complexing agent.Type: ApplicationFiled: August 2, 2013Publication date: February 5, 2015Inventors: Swapnil J. Dalavi, Shabab Amiruddin, Bing Li
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Patent number: 8945776Abstract: An electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including the same, the electrolyte including a lithium salt, a silylborate-based compound, an anhydride component, and a non-aqueous organic solvent.Type: GrantFiled: December 28, 2009Date of Patent: February 3, 2015Assignee: Samsung SDI Co., Ltd.Inventors: Tae-Ahn Kim, Mi-Hyeun Oh, Na-Rae Won, Sung-Hoon Kim
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Patent number: 8945781Abstract: The present invention provides a non-aqueous electrolyte secondary battery wherein a reaction between a non-aqueous electrolyte and an electrode is suppressed and decrease in battery capacity under high temperature is restricted, so that long time excellent battery characteristics can be obtained. A non-aqueous solvent of the non-aqueous electrolyte contains: chain fluorinated carboxylic acid ester represented by the formula R1-CH2—COO—R2 where R1 represents hydrogen or alkyl group and R2 represents alkyl group and the sum of the carbon numbers of R1 and R2 is 3 or less, and in the case that R1 is hydrogen, at least one part of hydrogen in R2 is replaced with fluorine, and, in the case that R1 is alkyl group, at least one part of hydrogen in R1 and/or R2 is replaced with fluorine; and a film forming chemical compound decomposed in the range of +1.0 to 3.0 V based on an equilibrium potential between metal lithium and lithium ion.Type: GrantFiled: February 5, 2008Date of Patent: February 3, 2015Assignees: SANYO Electric Co., Ltd., Kanto Denka Kogyo Co., Ltd.Inventors: Takanobu Chiga, Keiji Saisho, Ryo Mogi, Osamu Omae
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Publication number: 20150030939Abstract: The invention relates to the use of lithium-2-pentafluoroethoxy-1,1,2,2-tetrafluoro-ethanesulfonate as a conductive salt in lithium-based energy stores and to electrolytes containing lithium-2-pentafluoroethoxy-1,1,2,2-tetrafluoro-ethanesulfonate.Type: ApplicationFiled: February 27, 2013Publication date: January 29, 2015Inventors: Marius Amereller, René Schmitz, Raphael Wilhelm Schmitz, Ansgar Romek Müller, Martin Winter, Christian Schreiner, Miriam Kunze, Stefano Passerini
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Patent number: 8940443Abstract: An electrolyte comprising an organic solvent, a lithium salt, and a polymer additive comprised of repeating vinyl units joined to one or more heterocyclic amine moieties is described. The heterocyclic amine contains five to ten ring atoms, inclusive. An electrochemical cell is also disclosed. The preferred cell comprises a negative electrode which intercalates with lithium, a positive electrode comprising an electrode active material which intercalates with lithium, and the electrolyte of the present invention activating the negative and the positive electrodes.Type: GrantFiled: November 14, 2008Date of Patent: January 27, 2015Assignee: Greatbatch Ltd.Inventor: Chi-Kyun Park
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Publication number: 20150017515Abstract: Disclosed are an electrolyte for a lithium secondary battery which includes a non-aqueous solvent and a lithium salt and a lithium secondary battery including the same. The electrolyte includes 1 to 60 wt % of a cyclic carbonate and 40 to 99 wt % of a linear solvent based on a total weight of the non-aqueous solvent.Type: ApplicationFiled: September 30, 2014Publication date: January 15, 2015Applicant: LG Chem, Ltd.Inventors: Jong Ho Jeon, Yoo Seok Kim, Doo Kyung Yang, Shulkee Kim
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Publication number: 20150010831Abstract: A lithium secondary battery including a positive electrode including a positive electrode active material capable of intercalating and deintercalating lithium ions, a negative electrode including a negative electrode active material capable of intercalating and deintercalating lithium ions, and a nonaqueous electrolytic solution, wherein the positive electrode active material includes an active material capable of intercalating or deintercalating lithium ions at a potential of 4.5 V or more, and the nonaqueous electrolytic solution includes a particular fluorine-containing ether compound.Type: ApplicationFiled: January 16, 2013Publication date: January 8, 2015Inventors: Takehiro Noguchi, Makiko Uehara
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Patent number: 8927159Abstract: The present invention provides non-aqueous electrolyte solution for a lithium secondary battery, comprising an ester-based compound having a branched-chain alkyl group and an ester-based compound having a straight-chain alkyl group; and a lithium secondary battery using the same.Type: GrantFiled: July 3, 2013Date of Patent: January 6, 2015Assignee: LG Chem, Ltd.Inventors: Sung-Hoon Yu, Doo-Kyung Yang, Jong-Ho Jeon, Min-Jung Jou
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Patent number: 8920981Abstract: There is provided in one embodiment of the invention an electrolyte for use in a lithium ion electrochemical cell. The electrolyte comprises a mixture of an ethylene carbonate (EC), an ethyl methyl carbonate (EMC), an ester cosolvent, and a lithium salt. The ester cosolvent comprises methyl propionate (MP), ethyl propionate (EP), methyl butyrate (MB), ethyl butyrate (EB), propyl butyrate (PB), or butyl butyrate (BB). The electrochemical cell operates in a temperature range of from about ?60 degrees Celsius to about 60 degrees Celsius. In another embodiment there is provided a lithium ion electrochemical cell using the electrolyte of the invention.Type: GrantFiled: April 7, 2009Date of Patent: December 30, 2014Assignee: California Institute of TechnologyInventors: Marshall C. Smart, Ratnakumar V. Bugga
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Publication number: 20140349198Abstract: Provided are a non-aqueous electrolyte solution, which includes a non-aqueous organic solvent including propylene carbonate (PC) and an ester-based solvent, and lithium bis(fluorosulfonyl)imide (LiFSI), and a lithium secondary battery including the non-aqueous electrolyte solution. According to the non-aqueous electrolyte solution of the present invention, since a robust solid electrolyte interface (SEI) may be formed on an anode during initial charge of a lithium secondary battery including the non-aqueous electrolyte solution, high-temperature cycle characteristics and capacity characteristics after high-temperature storage as well as low-temperature, room temperature, and high-temperature output characteristics may be simultaneously improved.Type: ApplicationFiled: July 31, 2014Publication date: November 27, 2014Inventors: Young Min Lim, Chul Haeng Lee, Doo Kyung Yang, Shul Kee Kim
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Publication number: 20140342244Abstract: The electrolyte includes one or more salts and a silane. The silane has a silicon linked to one or more first substituents that each include a poly(alkylene oxide) moiety or a cyclic carbonate moiety. The silane can be linked to four of the first substituents. Alternately, the silane can be linked to the one or more first substituents and one or more second substituents that each exclude both a poly(alkylene oxide) moiety and a cyclic carbonate moiety.Type: ApplicationFiled: May 20, 2014Publication date: November 20, 2014Inventors: Robert C. West, Khalil Amine, Zhengcheng Zhang, Qingzheng Wang, Nicholas A.A. Rossi, Sang Young Yoon, Hiroshi Nakahara
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Patent number: 8889302Abstract: Disclosed is a nonaqueous electrolytic solution which forms a nonaqueous-electrolyte battery having high capacity and excellent storage characteristics at high temperatures, while sufficiently enhancing safety at the time of overcharge, and a nonaqueous-electrolyte battery using the same. The nonaqueous electrolytic solution has an electrolyte and a nonaqueous solvent with (A) a compound of formula (2): wherein R7 is an optionally halogenated and/or phenylated alkyl group comprising 1-12 carbon atoms, R8 to R12 are independently a hydrogen atom, a halogen atom, an optionally halogenated ether or alkyl group comprising 1-12 carbon atoms, and at least one of R8 to R12 is an optionally halogenated alkyl group comprising 2-12 carbon atoms; and/or (B) a carboxylic acid ester with a phenyl group substituted by at least one alkyl group (having 4 or more carbon atoms) that is optionally substituted.Type: GrantFiled: August 16, 2012Date of Patent: November 18, 2014Assignee: Mitsubishi Chemical CorporationInventors: Yumiko Nakagawa, Minoru Kotato, Daisuke Noda, Shinichi Kinoshita
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Patent number: 8883356Abstract: Electrolyte and lithium secondary batteries containing the same are disclosed. In one instance, the electrolyte includes a lithium salt, a solvent and an additive. In some examples, the additive includes substances A, B and C, wherein substance A is vinylene carbonate, substance B includes at least one of fluorinated or chlorinated ethylene carbonate or diethylene carbonate, and substance C includes at least one of ethylene sulfite, 1,3-propanesultone and propenyl sulfite.Type: GrantFiled: June 11, 2009Date of Patent: November 11, 2014Assignee: BYD Company LimitedInventors: GuiShu Zhou, Lei Si, Yong Wang, YiWei Fan
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Patent number: 8871390Abstract: Disclosed are gel electrolytes comprising a polymer, which is polyacrylonitrile (PAN) and polyethylene oxide (PEO); a lithium salt; and a solvent, which is a carbonate solvent, a lactone solvent, or mixtures thereof.Type: GrantFiled: August 27, 2010Date of Patent: October 28, 2014Assignee: Indian Institute of Technology BombayInventors: Ramamurthy Balaji, Ajit R. Kulkarni, Raman S. Srinivasa
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Patent number: 8871384Abstract: There is provided a non-aqueous electrolytic solution comprising an electrolyte salt, a specific fluorine-containing solvent and a fluorine-containing cyclic carbonate represented by the formula (A1): wherein X1 to X4 are the same or different and each is —H, —F, —CF3, —CHF2, —CH2F, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3; at least one of X1 to X4 is —F, —CF3, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3, and the non-aqueous electrolytic solution has further excellent noncombustibility and is suitable for lithium secondary batteries.Type: GrantFiled: February 5, 2008Date of Patent: October 28, 2014Assignee: Daikin Industries, Ltd.Inventors: Meiten Koh, Hideo Sakata, Hitomi Nakazawa, Michiru Tanaka, Akiyoshi Yamauchi
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Patent number: 8865353Abstract: A nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, containing a hydantoin compound represented by the following general formula (I) in an amount of from 0.01 to 5% by mass of the nonaqueous electrolytic solution, and excellent in battery characteristics such as high-temperature storage property and cycle property. (In the formula, R1 and R2 each represent a methyl group or an ethyl group; R3 and R4 each represent a hydrogen atom, a methyl group or an ethyl group.Type: GrantFiled: August 4, 2009Date of Patent: October 21, 2014Assignee: Ube Industries, Ltd.Inventors: Koji Abe, Masahide Kondo
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Patent number: 8865350Abstract: A nonaqueous electrolyte battery is provided and includes a positive electrode, a negative electrode having a negative electrode active material layer containing a negative electrode active material, a separator disposed between the positive electrode and the negative electrode, and a non-fluid electrolyte. The non-fluid electrolyte contains an electrolyte salt, a nonaqueous solvent, an orthoester compound represented by the following formula (1), and at least one member selected from the group consisting of cyclic carbonate compounds represented by the following formula (2) to (5). A volume viscosity of the negative electrode active material layer is 1.50 g/cc or more and not more than 1.75 g/cc, and a specific surface area of the negative electrode active material is 0.8 m2/g or more and not more than 4.Type: GrantFiled: February 11, 2011Date of Patent: October 21, 2014Assignee: Sony CorporationInventors: Ichiro Yamada, Tadahiko Kubota
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Publication number: 20140308544Abstract: A system and method for stabilizing electrodes against dissolution and/or hydrolysis including use of cosolvents in liquid electrolyte batteries for three purposes: the extension of the calendar and cycle life time of electrodes that are partially soluble in liquid electrolytes, the purpose of limiting the rate of electrolysis of water into hydrogen and oxygen as a side reaction during battery operation, and for the purpose of cost reduction.Type: ApplicationFiled: March 31, 2014Publication date: October 16, 2014Applicant: Alveo Energy, Inc.Inventors: Colin Deane Wessells, Ali Firouzi, Shahrokh Motallebi, Sven Strohband
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Publication number: 20140295289Abstract: According to one embodiment, a nonaqueous electrolyte battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode includes at least one oxide selected from the group consisting of a first oxide having a spinel structure and represented by LixNi0.5Mn1.5O4, a second metal phosphate having an olivine structure and represented by LixMn1-wFewPO4, and a third oxide having a layered structure and represented by LixNiyMnzCo1-y-zO2. The nonaqueous electrolyte includes a first solvent. The first solvent includes at least one compound selected from the group consisting of trimethyl phosphate, triethyl phosphate, tripropyl phosphate, tributyl phosphate, and fluorinated phosphate ester.Type: ApplicationFiled: March 7, 2014Publication date: October 2, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Norio TAKAMI, Hiroki INAGAKI, Takashi KISHI
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Patent number: 8846249Abstract: The positive electrode of a lithium ion secondary battery includes active material particles represented by LixNi1?yMyMezO2+?, and the active material particles include a lithium composite oxide represented by LixNi1?yMyO2, (where 0.95?x?1.1, 0<y?0.75, 0.001?z?0.05). The element M is selected from the group consisting of alkaline-earth elements, transition elements, rare-earth elements, IIIb group elements and IVb group elements. The element Me is selected from the group consisting of Mn, W. Nb, Ta, In, Mo, Zr and Sn, and the element Me is included in a surface portion of the active material particles. The lithium content x in the lithium composite oxide in an end-of-discharge state when a constant current discharge is performed at a temperature of 25° C. with a current value of 1C and an end-of-discharge voltage of 2.5 V satisfies 0.85?x??0.013Ln(z)+0.871.Type: GrantFiled: June 12, 2006Date of Patent: September 30, 2014Assignee: Panasonic CorporationInventor: Kensuke Nakura
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Publication number: 20140287325Abstract: A nonaqueous electrolytic solution prepared by dissolving an electrolyte salt in a nonaqueous solvent, wherein the nonaqueous electrolytic solution contains at least one kind of an isocyanate compound having an ester structure represented by the following general formula (I): (wherein R represents an alkyl group, an alkenyl group, a C6 to C12 aryl group, an alkyloxy group, an alkenyloxy group, an isocyanatoalkyloxy group, or an aryloxy group in which at least one of the hydrogen atom may be substituted with a halogen atom. X represents a linear or branched alkylene group in which at least one of the hydrogen atom may be substituted with a halogen atom, or a bivalent linking group comprising at least one ether bond.Type: ApplicationFiled: October 16, 2012Publication date: September 25, 2014Applicant: UBE INDUSTRIES, LTD.Inventors: Koji Abe, Kazuhiro Miyoshi, Masahide Kondo
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Publication number: 20140272605Abstract: Provided are a non-aqueous electrolyte solution which includes a lithium salt including lithium bis(fluorosulfonyl)imide (LiFSI) and an additive including a vinylene carbonate-based compound and a sultone-based compound, and a lithium secondary battery including the non-aqueous electrolyte solution. The lithium secondary battery including the non-aqueous electrolyte solution of the present invention may improve low-temperature output characteristics, high-temperature cycle characteristics, output characteristics after high-temperature storage, and capacity characteristics.Type: ApplicationFiled: June 2, 2014Publication date: September 18, 2014Applicant: LG CHEM, LTD.Inventors: Young Min Lim, Chul Haeng Lee, Doo Kyung Yang, Kyoung Ho Ahn, Gwang Yeon Kim
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Publication number: 20140272604Abstract: Provided is an electrolyte solution additive including lithium difluorophosphate (LiDFP), a vinylene carbonate-based compound, and a sultone-based compound. Also, a non-aqueous electrolyte solution including the electrolyte solution additive and a lithium secondary battery including the non-aqueous electrolyte solution are provided. The lithium secondary battery including the electrolyte solution additive of the present invention may improve low-temperature output characteristics, high-temperature cycle characteristics, output characteristics after high-temperature storage, and swelling characteristics.Type: ApplicationFiled: May 29, 2014Publication date: September 18, 2014Applicant: LG CHEM, LTD.Inventors: Young Min Lim, Chul Haeng Lee, Doo Kyung Yang, Yu Ha An
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Publication number: 20140242472Abstract: The present invention relates to a non-aqueous electrolyte solution for a lithium secondary battery, comprising a sulfolane-based additive; and a lithium secondary battery using the same. The non-aqueous electrolyte solution for a lithium secondary battery according to the present invention comprises an ionizable lithium salt; an organic solvent; and a sulfolane compound of formula (I), the sulfolane compound being present in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the total weight of the lithium salt and the organic solvent. The non-aqueous electrolyte solution for a lithium secondary battery according to the present invention can exhibit superior storage characteristic and life cycle at a high temperature, with maintaining good output characteristic at a low temperature.Type: ApplicationFiled: May 14, 2014Publication date: August 28, 2014Applicant: LG Chem, Ltd.Inventors: Yu-Ha An, Doo Kyung Yang, Chul-Haeng Lee, Young-Min Lim, Jong-Ho Jeon
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Patent number: 8815454Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, a separator separating the positive electrode and the negative electrode, and an electrolyte. The negative electrode active material of the negative electrode includes a material that is capable of reversibly intercalating and deintercalating lithium ions and a metallic material capable of alloying with lithium. The electrolyte includes a chemical compound containing a nitrile (—CN) radical.Type: GrantFiled: December 12, 2008Date of Patent: August 26, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Yong-Shik Kim, Jin-Bum Kim, Jin-Sung Kim, Na-Rae Park
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Publication number: 20140234728Abstract: Disclosed are an electrolyte for a lithium secondary battery which includes a non-aqueous solvent and a lithium salt, wherein the non-aqueous solvent includes an anion receptor, a cyclic carbonate, and a linear solvent, wherein an amount of the cyclic carbonate is in a range of 1 wt % to 30 wt % based on a total weight of the non-aqueous solvent, and a lithium secondary battery including the same.Type: ApplicationFiled: April 25, 2014Publication date: August 21, 2014Applicant: LG CHEM, LTD.Inventors: Jong Ho Jeon, Yoo Seok Kim, Doo Kyung Yang, Shulkee Kim
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Publication number: 20140234727Abstract: A nonaqueous electrolytic solution that is capable of improving the electrochemical characteristics in a broad temperature range, and an energy storage device using the same are provided, and the nonaqueous electrolytic solution contains a nonaqueous solvent having dissolved therein an electrolyte salt, in which the nonaqueous solvent contains two or more kinds of cyclic carbonates selected from ethylene carbonate, propylene carbonate, 1,2-butylene carbonate, 2,3-butylene carbonate, 4-fluoro-1,3-dioxolan-2-one, trans- or cis-4,5-difluoro-1,3-dioxolan-2-one, vinylene carbonate, vinyl ethylene carbonate and 4-ethynyl-1,3-dioxolan-2-one, and the nonaqueous electrolytic solution further contains a cyclic acid anhydride represented by the following general formula (I) having bonded thereto a side chain that has 3 or more carbon atoms and has a double bond or a triple bond at an end thereof in an amount of from 0.Type: ApplicationFiled: October 16, 2012Publication date: August 21, 2014Applicant: UBE INDUSTRIES, LTD.Inventors: Koji Abe, Masahide Kondo
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Patent number: 8808918Abstract: The rechargeable lithium battery of the present invention includes a positive electrode including a positive active material, a negative electrode including a negative active material, and a non-aqueous electrolyte. The positive active material includes a core and a coating layer formed on the core. The core is made of a material such as LiCo0.98M?0.02O2, and the coating layer is made of a material such as MxPyOz. The electrolyte solution includes a nitrile-based additive. The rechargeable lithium battery of the present invention shows higher cycle-life characteristics and longer continuous charging time at high temperature.Type: GrantFiled: June 12, 2007Date of Patent: August 19, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Euy-Young Jung, Duck-Chul Hwang, Jeom-Soo Kim, Jong-Hwa Lee, Yong-Chul Park, Jae-Yul Ryu, So-Hyun Hur
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Publication number: 20140227584Abstract: Electrolyte compositions containing a solvent mixture comprising 2,2,-difluoroethyl acetate and ethylene carbonate are described. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.Type: ApplicationFiled: August 31, 2012Publication date: August 14, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: William L. Holstein, Xudong Chen, Jun J. Liu, Mark Gerrit Roelofs
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Publication number: 20140227611Abstract: The object of the present exemplary embodiment is to provide a non-aqueous secondary battery effectively in which the decomposition of an electrolyte liquid is effectively reduced even under high-voltage and high-temperature condition, and which is excellent in the long-term cycle property. The present exemplary embodiment is a non-aqueous secondary battery including an electrolyte liquid including a supporting salt and a non-aqueous electrolyte solvent, wherein the non-aqueous electrolyte solvent includes a sulfone compound represented by a predetermined formula and a fluorine-containing ester compound represented by a predetermined formula; a content of the sulfone compound in the non-aqueous electrolyte solvent is 20 vol % or more and 70 vol % or less; and a content of the fluorine-containing ester compound in the non-aqueous electrolyte solvent is 20 vol % or more and 60 vol % or less.Type: ApplicationFiled: August 22, 2012Publication date: August 14, 2014Applicant: NEC CORPORATIONInventor: Akinobu Nakamura
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Patent number: 8802300Abstract: A rechargeable lithium battery including a positive electrode including a positive active material, a negative electrode including a negative active material, and a non-aqueous electrolyte including a non-aqueous organic solvent and a lithium salt. The positive electrode has an active-mass density of about 3.7 to 4.1 g/cc, and the non-aqueous electrolyte includes a nitrile-based compound additive, a non-aqueous organic solvent, and a lithium salt.Type: GrantFiled: October 23, 2007Date of Patent: August 12, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Jong-Hwa Lee, Duck-Chul Hwang, Jeom-Soo Kim, Yong-Chul Park, Jae-Yul Ryu, Euy-Young Jung, So-Hyun Hur
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Patent number: 8802299Abstract: The present invention is made to improve charge-discharge cycle performances under high temperature environment in a non-aqueous electrolyte secondary battery using a negative electrode containing a negative electrode active material of particulate silicon and/or silicon alloy and a binding agent.Type: GrantFiled: August 4, 2009Date of Patent: August 12, 2014Assignee: SANYO Electric Co., Ltd.Inventors: Hidekazu Yamamoto, Atsushi Fukui, Taizou Sunano, Maruo Kamino
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Publication number: 20140220455Abstract: A rechargeable lithium battery including a negative electrode including a silicon-based negative active material; a positive electrode including a positive active material including a sacrificial positive active material selected from lithium nickel oxides, lithium molybdenum oxides, and combinations thereof; and a non-aqueous electrolyte, is disclosed.Type: ApplicationFiled: July 23, 2013Publication date: August 7, 2014Applicant: Samsung SDI Co., Ltd.Inventors: Soon-Rewl Lee, Ick-Kyu Choi, Young-Ki Kim, Young-Hun Lee, Na-Leum Yoo, Na-Ri Park, Yong-Chul Park
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Patent number: 8795903Abstract: The invention discloses various embodiments of Li-ion electrolytes containing flame retardant additives that have delivered good performance over a wide temperature range, good cycle life characteristics, and improved safety characteristics, namely, reduced flammability. In one embodiment of the invention there is provided an electrolyte for use in a lithium-ion electrochemical cell, the electrolyte comprising a mixture of an ethylene carbonate (EC), an ethyl methyl carbonate (EMC), a fluorinated co-solvent, a flame retardant additive, and a lithium salt. In another embodiment of the invention there is provided an electrolyte for use in a lithium-ion electrochemical cell, the electrolyte comprising a mixture of an ethylene carbonate (EC), an ethyl methyl carbonate (EMC), a flame retardant additive, a solid electrolyte interface (SEI) film forming agent, and a lithium salt.Type: GrantFiled: August 18, 2009Date of Patent: August 5, 2014Assignee: California Institute of TechnologyInventors: Marshall C. Smart, Kiah A. Smith, Ratnakumar V. Bugga, Surya G. Prakash, Frederick Charles Krause
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Patent number: 8795904Abstract: A series of polar and aprotic organic molecules, which, when used as solvents or additives in nonaqueous electrolytes, afford improved performance for electrochemical cells that operate at high voltages. These polar and aprotic solvents or additives may contain at least one unsaturated functionality per molecule. The unsaturated functionality is conjugated with the polar functionality of the molecule. The unsaturated functionality that is either a double or triple bond could be between carbon-carbon, or between carbon-heteroatom, or between hetroatom-heteroatom. Nonaqueous electrolyte solutions are provided comprising one or more lithium salts dissolved in the mixture solvents, which comprises, in all possible ratios, at least one of the polar, aprotic and unsaturated solvent or additives, one or more cyclic carbonic diesters such as ethylene carbonate, and one or more acyclic carbonic diesters such as dimethyl carbonate, diethyl carbonate, and ethylmethyl carbonate.Type: GrantFiled: January 10, 2011Date of Patent: August 5, 2014Assignee: The United States of America as Represented by the Secretary of the ArmyInventor: Kang Conrad Xu
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Publication number: 20140212770Abstract: Disclosed are a non-aqueous electrolytic solution that exhibits excellent electrochemical characteristics over a wide temperature range, and an electrochemical device using the non-aqueous electrolytic solution. The non-aqueous electrolytic solution includes a non-aqueous solvent and an electrolyte salt dissolved in the non-aqueous solvent, wherein the non-aqueous electrolytic solution further comprises one compound represented by general formula (I): wherein R1 represents alkyl having 1 to 6 carbon atoms, cycloalkyl having 3 to 6 carbon atoms, alkenyl having 2 to 6 carbon atoms, alkynyl having 3 to 6 carbon atoms, or aryl having 6 to 12 carbon atoms; X represents a divalent linking group that has 1 to 6 carbon atoms and is optionally substituted by a halogen atom; and Y1 represents a specific substituent, for example, alkylcarbonyl.Type: ApplicationFiled: August 3, 2012Publication date: July 31, 2014Applicant: Ulbe industries, Ltd.Inventors: Koji Abe, Kei Shimamoto
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Publication number: 20140212769Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The positive electrode contains active material particles and a coating material. The active material particles are represented by any one of the following formulae (1) to (3): LixM1yO2??(1) LizM22wO4??(2) LisM3tPO4??(3) and have an average particle diameter of 0.1 to 10 ?m. The coating material comprises at least particles having an average particle diameter of 60 nm or less or layers having an average thickness of 60 nm or less. The particles or the layers contain at least one element selected from the group consisting of Mg, Ti, Zr, Ba, B and C.Type: ApplicationFiled: April 2, 2014Publication date: July 31, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Norio TAKAMI, Hiroki INAGAKI, Keigo HOSHINA