Chemically Specified Organic Solute Patents (Class 429/307)
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Patent number: 7241534Abstract: A lithium polymer secondary battery comprising: a negative electrode including a carbonaceous material, as an active material, obtainable by attaching or covering an amorphous carbon on the surface of graphite particle; an electrolyte layer; and a positive electrode having at least a metal oxide containing lithium as an active material, wherein the electrolyte layer comprising: a polymer containing a unit derived from vinylene carbonate; an organic solvent; and lithium salt.Type: GrantFiled: April 11, 2002Date of Patent: July 10, 2007Assignee: Sharp Kabushiki KaishaInventors: Naoto Nishimura, Masako Kitagawa, Motoaki Nishijima, Naoto Torata, Koichi Ui
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Patent number: 7238451Abstract: The present invention is directed to a polymer electrolyte comprising amine groups dispersed throughout the polymer backbone, including various poly(ethylenimine)-based polymers, which enable ionic movement for use in various applications, including for example batteries, fuel cells, sensors, supercapacitors and electrochromic devices. The present invention is further directed to a method for preparing such polymer electrolytes.Type: GrantFiled: December 31, 2001Date of Patent: July 3, 2007Assignee: The Board of Regents of the University of OklahomaInventors: Roger E. Frech, Daniel T. Glatzhofer
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Patent number: 7235333Abstract: An ion conductor structural body having a high ion conductivity and an excellent mechanical strength, principally comprising is provided. This ion conductor structural body includes (a) a polymer matrix; (b) a solvent capable of functioning as a plasticizer; and (c) an electrolyte. The polymer matrix (a) includes a polymer chain having at least a segment represented by the following general formula (1), a main chain portion of said polymer chain and a side chain portion of said segment have an orientation property, and said polymer matrix has a crosslinked structure: wherein R1 and R2 are, respectively, H or an alkyl group of 2 or less carbon atoms, A is a group having at least a polyether group, and R3 is a group having at least an alkyl group of more than 6 carbon atoms.Type: GrantFiled: April 26, 2005Date of Patent: June 26, 2007Assignee: Canon Kabushiki KaishaInventors: Tomoya Yamamoto, Soichiro Kawakami, Toshifumi Akasaka
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Patent number: 7226549Abstract: A solid state ion conducting electrolyte and a battery incorporating same. The electrolyte includes a polymer matrix with an alkali metal salt dissolved therein, the salt having an anion with a long or branched chain having not less than 5 carbon or silicon atoms therein. The polymer is preferably a polyether and the salt anion is preferably an alkyl or silyl moiety of from 5 to about 150 carbon/silicon atoms.Type: GrantFiled: December 10, 2002Date of Patent: June 5, 2007Assignee: UChicago Argonne, LLCInventors: Rex E. Gerald, II, Jerome W. Rathke, Robert J. Klingler
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Patent number: 7226704Abstract: Electrolytes containing lithium-bis(oxalato)borate, a cyclic carbonate, one or more compounds selected from acrylic carbonates, aliphatic esters, alicyclic ethers and aliphatic, difunctional ethers, one or more compounds selected from lactones, dinitriles, compounds that contain at least one carboxylic acid ester group and an ether group, compounds that contain at least one carbonic acid group and an ether group, compounds that contain at least one nitrile group and an ether group, trialkyl phosphoric acid esters and trialkyl boric acids.Type: GrantFiled: March 5, 2002Date of Patent: June 5, 2007Assignee: Chemetall GmbHInventors: Jan-Christoph Panitz, Ulrich Wietelmann, Markus Scholl
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Patent number: 7223501Abstract: A solid polymer electrolyte, a lithium battery employing the same, and methods of forming the electrolyte and the lithium battery. The polymer electrolyte includes polyester (meth)acrylate having a polyester polyol moiety having three or more hydroxide (—OH) groups, at least one hydroxde group being substituted by a (meth)acrylic ester group and at least one hydroxide group being substituted by a radical non-reactive group, or its polymer, a peroxide having 6 to 40 carbon atoms, and an electrolytic solution including a lithium salt and an organic solvent.Type: GrantFiled: November 5, 2002Date of Patent: May 29, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Cheol-soo Jung, Ki-ho Kim, Eui-hwan Song, Doo-kyung Yang, Kyoung-hee Lee, Yong-beom Lee, Hyun-jeong Lim, Takitaro Yamaguchi, Ryuichi Shimizu
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Patent number: 7223500Abstract: An electrolyte of a lithium secondary battery includes lithium salts, an organic solvent with a high boiling point, and a carbonate-based additive compound having substituents selected from the group consisting of a halogen, a cyano (CN), and a nitro (NO2). The electrolyte improves discharge, low temperature, and cycle life characteristics of a lithium secondary battery.Type: GrantFiled: September 3, 2003Date of Patent: May 29, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Hyeong-Gon Noh, Cheol-Soo Jung, Eui-Hwan Song
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Patent number: 7205073Abstract: An electrolyte for a lithium battery includes a non-aqueous organic solvent, a lithium salt, and an additive comprising a) a compound represented by the following Formula (1), and b) a compound selected from the group consisting of a sulfone-based compound, a poly(ester)(metha)acrylate, a polymer of poly(ester)(metha)acrylate, and a mixture thereof: wherein R1 is a C1 to C10 alkyl, a C1 to C10 alkoxy, or a C6 to C10 aryl, and preferably a methyl, ethyl, or methoxy, X is a halogen, and m and n are integers ranging from 1 to 5, where m+n is less than or equal to 6.Type: GrantFiled: March 21, 2003Date of Patent: April 17, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Jun-Ho Kim, Ha-Young Lee, Sang-Hoon Choy, Ho-Sung Kim, Hyeong-Gon Noh
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Patent number: 7198871Abstract: In a non-aqueous electrolyte secondary battery provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte solution, a positive electrode active material is a mixture of lithium-manganese composite oxide and at least one of lithium-nickel composite oxide represented by a general formula LiNiaM11?aO2 and lithium-cobalt composite oxide represented by the general formula LiCobM21?bO2, and said non-aqueous electrolyte solution contains at least a saturated cyclic carbonic acid ester and an unsaturated cyclic carbonic acid ester having double bond of carbon where content by amount of said unsaturated cyclic carbonic acid ester having double bond of carbon is in a range of 1.0×10?8 to 2.4×10?4 g per positive electrode capacity 1 mAh.Type: GrantFiled: August 20, 2003Date of Patent: April 3, 2007Assignee: Sanyo Electric, Co., Ltd.Inventors: Hideki Kitao, Takao Inoue, Katsunori Yanagida, Naoya Nakanishi, Atsuhiro Funahashi, Toshiyuki Nohma
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Patent number: 7198870Abstract: A polymer matrix electrolyte (PME) includes a polyimide, at least one salt and at least one solvent intermixed. The PME is generally homogeneous as evidenced by its high level of optically clarity. The PME is stable through harsh temperature and pressure conditions. A method of forming a PME includes the steps of dissolving a polyimide in at least one solvent, adding at least one salt to the polyimide and the solvent, wherein said polyimide, salt and solvent become intermixed to form the PME, the PME being substantially optically clear.Type: GrantFiled: July 29, 2005Date of Patent: April 3, 2007Assignees: Solicore, Inc., Avestor Limited PartnershipInventors: C. Glen Wensley, Alain Vallée, Dany Brouillette, Scott Gustafson
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Patent number: 7195835Abstract: An ion conducting membrane comprising dendrimeric polymers covalently linked into a network structure. The dendrimeric polymers have acid functional terminal groups and may be covalently linked via linking compounds, cross-coupling reactions, or copolymerization reactions. The ion conducting membranes may be produced by various methods and used in fuel cells.Type: GrantFiled: December 1, 2005Date of Patent: March 27, 2007Assignee: UChicago Argonne, LLCInventors: Daniel G. Colombo, Michael Krumpelt, Deborah J. Myers, John P. Kopasz
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Patent number: 7167353Abstract: The water present within an ionic liquid that is in a liquid state at 25° C. or an organic solution containing at least one ionic compound is decomposed by bringing electrodes into contact with the ionic liquid or organic solution within an atmosphere having a dew-point temperature not higher than ?40° C. or under a reduced pressure of not more than 75 torr, thereby reducing the water content. This process makes it possible to obtain highly dehydrated ionic liquids.Type: GrantFiled: April 24, 2003Date of Patent: January 23, 2007Assignee: Nisshinbo Industries, Inc.Inventors: Kanako Yuyama, Ryutaro Nozu, Gen Masuda, Takaya Sato
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Patent number: 7160648Abstract: A polymer electrolyte composition for improving overcharge safety and a lithium battery using the same are provided. The polymer electrolyte composition includes acrylate, epoxy or isocyanate at both of its terminals, and includes a compound containing an aromatic group such as thiophene, biphenyl or furan in an amount of 0.1% to 20% by weight based on the amount of the overall organic electrolytic solution. The polymer electrolyte composition further includes at least one of polyethylene glycol diacrylate (PEGDA), polyethylene glycol dimethacrylate (PEGDMA), and a mixture thereof. A lithium polymer battery using the polymer electrolyte composition can be suppressed from danger of ignition or explosion when the battery is overcharged due to some uncontrolled conditions, such as failure of a charger. Moreover, an additional cutoff device is not necessary, while still exhibiting good life cycle characteristics of the battery.Type: GrantFiled: December 17, 2004Date of Patent: January 9, 2007Assignee: Samsung SDI Co., Ltd.Inventor: Hyeong-Gon Noh
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Patent number: 7160645Abstract: A process for prolonging the life of a lead-acid battery by adding an organic polymer and ultra fine lignin to its electrolyte and then discharging the battery at a high current rate and the battery so produced.Type: GrantFiled: August 5, 2003Date of Patent: January 9, 2007Inventors: Akiya Kozawa, Hirofum Hrada, Giym Yoko
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Patent number: 7135254Abstract: The present invention relates to a multi-layered, UV-cured polymer electrolyte and lithium secondary battery comprising the same, wherein the polymer electrolyte comprises: A) a separator layer formed of polymer electrolyte, PP, PE, PVdF or non-woven fabric, wherein the separator layer having two surfaces; B) at least one gelled polymer electrolyte layer located on at least one surface of the separator layer comprising: a) polymer obtained by curing ethyleneglycoldi(meth)acrylate oligomer of the formula (I) by UV irradiation: CH2?CR1COO(CH2CH2O)nCOCR2?CH2 wherein, R1 and R2 are independently hydrogen or methyl group, and n is a integer of 3–20; and b) at least one polymer selected from the group consisting of PVdF-based polymer, PAN-based polymer, PMMA-based polymer and PVC-based polymer; and C) organic electrolyte solution in which lithium salt is dissolved in a solvent.Type: GrantFiled: January 31, 2001Date of Patent: November 14, 2006Assignee: Korea Institute of Science and TechnologiesInventors: Kyung-Suk Yun, Byung-Won Cho, Won-Il Cho, Hyung-Sun Kim, Un-Sek Kim, Hee-Woo Rhee, Yong-Tae Kim
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Patent number: 7097942Abstract: Provided are a fluoride copolymer, a polymer electrolyte comprising the fluoride copolymer, and a lithium battery employing the polymer electrolyte. The polymer electrolyte preferably includes as the fluoride copolymer at least one fluoride polymer selected from a polyethylene glycol methylether (meth)acrylate (PEGM)A)-2,2,2-trifluoroethylacrylate (TFEA) polymer, a PEGMA-TFEA-acrylonitrile (AN) polymer, a PEGMA-TFEA-methyl methacrylate (MMA) polymer, a PEGMA-TFEA-vinylpyrrolidone (VP) polymer, a PEGMA-TFEA-trimethoxyvinylsilane (TMVS) polymer, and a PEGMA-TFEA-ethoxy ethylacrylate (EEA) polymer.Type: GrantFiled: September 11, 2002Date of Patent: August 29, 2006Assignee: Samsung SDI Co., Ltd.Inventors: Seung-sik Hwang, Myung-dong Cho
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Patent number: 7097943Abstract: The present invention relates to a UV-cured multi-component polymer blend electrolyte, lithium secondary battery and their fabrication method, wherein the UV-cured multi-component polymer blend electrolyte, comprises: A) function-I polymer obtained by curing ethyleneglycoldi-(meth)acrylate oligomer of formula 1 by UV irradiation, CH2?CR1COO(CH2CH2O)nCOCR2?CH2 (1) wherein, R1 and R2 are independently a hydrogen or methyl group, and n is an integer of 3-20; B) function-II polymer selected from the group consisting of PAN-based polymer, PMMA-based polymer and mixtures thereof; C) function-III polymer selected from the group consisting of PVdF-based polymer, PVC-based polymer and mixtures thereof; and D) organic electrolyte solution in which lithium salt is dissolved in a solvent.Type: GrantFiled: January 31, 2001Date of Patent: August 29, 2006Assignee: Korea Institute of Science and TechnologyInventors: Byung-Won Cho, Won-Il Cho, Hyung-Sun Kim, Un-Sek Kim, Hee-Woo Rhee, Yong-Tae Kim, Min-Kyu Song
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Patent number: 7077983Abstract: A single ion-conducting nanocomposite of a substantially amorphous polyethylene ether and a negatively charged synthetic smectite clay useful as an electrolyte. Excess SiO2 improves conductivity and when combined with synthetic hectorite forms superior membranes for batteries. A method of making membranes is also disclosed.Type: GrantFiled: December 31, 2002Date of Patent: July 18, 2006Assignee: University of ChicagoInventors: Giselle Sandi-Tapia, Kathleen Carrado Gregar
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Patent number: 7033706Abstract: Polymer solid electrolytes with good film strength, high ionic conductivity and excellent processability are provided, comprising a resin composition for polymer solid electrolytes containing 0.5–5.0% by weight of a curable resin having a specific structure (A), a plasticizer and (B) an electrolyte (C).Type: GrantFiled: November 29, 2001Date of Patent: April 25, 2006Assignee: Nippon Kayaku Kabushiki KaishaInventors: Satoshi Mori, Minoru Yokoshima
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Patent number: 7008728Abstract: An electrolyte for a lithium secondary battery is provided. The electrolyte includes a lithium salt, a non-aqueous organic solvent, and a compound represented by Formula (1): wherein R1, R2, and R3 are each independently selected from the group consisting of hydrogen, primary, secondary, and tertiary alkyl groups, alkenyl groups, and aryl groups. The compound of the present invention is decomposed earlier than an electrolytic organic solvent, and an organic SEI film is formed on a negative electrode, thereby inhibiting the electrolytic organic solvent from decomposing.Type: GrantFiled: April 9, 2002Date of Patent: March 7, 2006Assignee: Samsung SDI Co., Ltd.Inventors: Jin-Sung Kim, Sang-Moon Hwang, Ryuichi Shimizu, Takitaro Yamaguchi, Meen-Seon Paik, Jin-Wook Lee, Cheol-Soo Jung
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Patent number: 6977122Abstract: An ion conducting membrane comprising dendrimeric polymers covalently linked into a network structure. The dendrimeric polymers have acid functional terminal groups and may be covalently linked via linking compounds, cross-coupling reactions, or copolymerization reactions. The ion conducting membranes may be produced by various methods and used in fuel cells.Type: GrantFiled: March 25, 2002Date of Patent: December 20, 2005Assignee: The University of ChicagoInventors: Daniel G. Colombo, Michael Krumpelt, Deborah J. Myers, John P. Kopasz
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Patent number: 6953642Abstract: An ion conductor structural body principally comprising (a) a polymer matrix, (b) a solvent capable of functioning as a plasticizer and (c) an electrolyte, wherein said polymer matrix (a) comprises a polymer chain having at least a segment represented by the following general formula (1), a main chain portion of said polymer chain and a side chain portion of said segment have an orientation property, and said polymer matrix has a crosslinked structure. (wherein R1 and R2 are respectively H or an alkyl group of 2 or less carbon atoms, A is a group having at least a polyether group, and R3 is a group having at least a alkyl group of more than 6 carbon atoms.Type: GrantFiled: December 21, 2001Date of Patent: October 11, 2005Assignee: Canon Kabushiki KaishaInventors: Tomoya Yamamoto, Soichiro Kawakami, Toshifumi Akasaka
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Patent number: 6924067Abstract: A polymer electrolyte includes a substrate polymer, a branched polymer, and a lithium salt. The branched polymer has a main chain whose repeating unit is composed of an oligoethylene oxide chain and a connector molecule bonded to the oligoethylene oxide chain. The branched polymer can be a hyperbranched polymer. The polymer electrolyte can further include a composite oxide and/or a boroxine compound. The polymer electrolyte is good in terms of the ionic conductivity, and exhibits a high ionic conductivity especially at low temperatures. When the polymer electrolyte is used to make polymer lithium batteries, the resulting polymer lithium batteries shows improved charge-discharge cycle characteristics. In particular, it is possible to operate the polymer lithium batteries at low temperatures.Type: GrantFiled: April 9, 2003Date of Patent: August 2, 2005Assignees: Toyota Jidosha Kabushiki Kaisha, Genesis Research Institute, Inc.Inventors: Takahito Ito, Osamu Yamamoto, Tatsuo Fujinami
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Patent number: 6924066Abstract: The invention relates to the use of salt-based compounds as additives in electrolytes for improvinq the properties of electrochemical cells.Type: GrantFiled: February 25, 2003Date of Patent: August 2, 2005Assignee: Merck Patent GmbHInventors: Udo Heider, Michael Schmidt, Anja Amann, Marlies Niemann, Andreas Kühner
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Patent number: 6893774Abstract: Fluoroalkylphosphate salts of Formula I, described herein, are suitable for use, alone or in mixtures with, e.g., other salts, in electrolytes, primary batteries, secondary batteries, capacitors, supercapacitors or galvanic cells.Type: GrantFiled: February 25, 2002Date of Patent: May 17, 2005Assignee: Merck Patent GmbHInventors: Michael Schmidt, Andreas Kuhner, Nikolai Ignatyev, Peter Sartori
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Patent number: 6882459Abstract: The inventive photoreactive device has a semiconductor and an oxidation-reduction material. The semiconductor has a conduction band with a potential and being capable of producing electrons under the irradiation of light on the semiconductor. The oxidation-reduction material has a redox potential being positive compared with the potential of the conduction band. The semiconductor supplies electrons into the oxidation-reduction material to reduce it under the irradiation of light for storing the electrons. The stored electrons are discharged from the oxidation-reduction material into a metal material to prevent the corrosion of the metal material.Type: GrantFiled: August 28, 2001Date of Patent: April 19, 2005Assignees: Koyo EngineeringInventors: Akira Fujishima, Tetsu Tatsuma, Yoshihisa Ohko, Shuichi Saitoh, Katsuhisa Kashiwazaki
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Patent number: 6858346Abstract: An organic salt having an alkali metal bound to a disubstituted amide of alkane iminosulfinic acid has the following general formula: where Ar is an aromatic group, M is an alkali metal such as Li, K or Na, and CxHy is an alkane. The organic salt can be used to form non-aqueous liquid and gel or plasticized polymer electrolytes. The electrolytes can be used to form improved lithium and lithium ion batteries.Type: GrantFiled: April 15, 2002Date of Patent: February 22, 2005Assignee: ENER1 Battery CompanyInventors: Elena Shembel, Ivan V. Koval, Tat'yna G. Oliynik, Oleg V. Chervakov, Peter Novak
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Patent number: 6853472Abstract: Electrolyte solutions of soluble bifunctional redox dyes in molten salt solvent may be used to prepare electrooptic devices with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF3SO3?), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N?), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N?) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C?).Type: GrantFiled: June 20, 2003Date of Patent: February 8, 2005Assignee: The Regents of the University of CaliforniaInventors: Benjamin P. Warner, T. Mark McCleskey, Anoop Agrawal, John P. Cronin, Juan C. L. Tonazzi, Anthony K. Burrell
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Patent number: 6849362Abstract: A polymer electrolyte composition for improving overcharge safety and a lithium battery using the same are provided. The polymer electrolyte composition includes acrylate, epoxy or isocyanate at both of its terminals, and includes a compound containing an aromatic group such as thiophene, biphenyl or furan in an amount of 0.1% to 20% by weight based on the amount of the overall organic electrolytic solution. The polymer electrolyte composition further includes at least one of polyethylene glycol diacrylate (PEGDA), polyethylene glycol dimethacrylate (PEGDMA), and a mixture thereof. A lithium polymer battery using the polymer electrolyte composition can be suppressed from danger of ignition or explosion when the battery is overcharged due to some uncontrolled conditions, such as failure of a charger. Moreover, an additional cutoff device is not necessary, while still exhibiting good life cycle characteristics of the battery.Type: GrantFiled: October 23, 2002Date of Patent: February 1, 2005Assignee: Samsung SDI Co., Ltd.Inventor: Hyeong-Gon Noh
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Patent number: 6841304Abstract: The invention concerns novel ionic compounds with low melting point whereof the onium type cation having at least a heteroatom such as N, O, S or P bearing the positive charge and whereof the anion includes, wholly or partially, at least an ion imidide such as (FX1O)N?(OX2F) wherein X1 and X2 are identical or different and comprise SO or PF, and their use as solvent in electrochemical devices. Said composition comprises a salt wherein the anionic charge is delocalised, and can be used, inter alia, as electrolyte.Type: GrantFiled: November 9, 2001Date of Patent: January 11, 2005Assignees: ACEP, Inc., Centre National de la Recherche Scientifique, Universite de MontrealInventors: Christophe Michot, Michel Armand, Michel Gauthier, Nathalie Ravet
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Patent number: 6841301Abstract: The present invention relates to fluoroalkyl phosphates, to a process for the preparation, and to their use as conductive salts in batteries, capacitors, supercapacitors and galvanic cells.Type: GrantFiled: August 1, 2001Date of Patent: January 11, 2005Assignee: Merck Patent GmbHInventors: Udo Heider, Michael Schmidt, Andreas Kühner, Peter Sartori, Nikolai Ignatyev
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Publication number: 20040234834Abstract: Disclosed are methods for forming a water-free electrolyte membrane useful in fuel cells. Also provided is a water-free electrolyte membrane comprising a quaternized amine salt including poly-4-vinylpyridinebisulfate, a poly-4-vinylpyridinebisulfate silica composite, and a combination thereof and a fuel cell comprising the membrane.Type: ApplicationFiled: November 24, 2003Publication date: November 25, 2004Inventors: Sekharipuram R. Narayanan, Shiao-Pin S. Yen
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Publication number: 20040229118Abstract: An IC card includes at least one plastic layer, a battery and at least one electronic device embedded in the plastic layer. The battery is electrically connected to the electronic device for providing power to the device. The battery includes an anode, a cathode, and at least one polymer matrix electrolyte (PME) separator disposed between the anode and the cathode. The PME separator includes a polyimide, at least one lithium salt and at least one solvent all intermixed. The PME is substantially optically clear and stable against high temperature and pressure, such as processing conditions typically used in hot lamination processing or injection molding.Type: ApplicationFiled: May 13, 2003Publication date: November 18, 2004Inventors: C. Glen Wensley, Scott Gustafson, Craig R. Nelson
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Publication number: 20040229127Abstract: A polymer matrix electrolyte (PME) includes a polyimide, at least one salt and at least one solvent intermixed. The PME is generally homogeneous as evidenced by its high level of optically clarity. The PME is stable through harsh temperature and pressure conditions. A method of forming a PME includes the steps of dissolving a polyimide in at least one solvent, adding at least one salt to the polyimide and the solvent, wherein said polyimide, salt and solvent become intermixed to form the PME, the PME being substantially optically clear.Type: ApplicationFiled: May 13, 2003Publication date: November 18, 2004Inventors: C. Glen Wensley, Scott Gustafson
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Publication number: 20040224233Abstract: A composite gel-type polymer electrolyte membrane, as a separator between the positive and the negative electrode for secondary battery, consists of crosslinked gel-type polyacrylonitrile (PAN) electrolytes, polyvinylidene fluoride (PVDF) polymers and liquid electrolytes. The crosslinked gel-type PAN electrolytes are copolymerized by acrylonitrile (AN) monomers and crosslinked monomers with two terminal acrylic acid ester function groups. The PVdF can be PVdF-co-HFP polymers containing over 80% PVdF. The liquid electrolytes are made from using nonaqueous solvents to dissolve alkaline or alkaline earth metallic salts. This invention has advantages of superior ionic conductivities and mechanical strength at high temperature, fine compatible to positive and negative electrodes and potential to be industrialized.Type: ApplicationFiled: May 5, 2003Publication date: November 11, 2004Inventors: Show -An Chen, Uan-Jie Xue, Jen-Jeh Lee, Po-Shen Wang
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Patent number: 6815119Abstract: The present invention relates to tetrakisfluoroalkylborate salts, methods of producing same, and their use in electrolytes, batteries, capacitors, supercapacitors, and galvanic cells.Type: GrantFiled: November 9, 2001Date of Patent: November 9, 2004Assignee: Merck Patent GmbHInventors: Michael Schmidt, Andreas Kuehner, Helge Willner, Eduard Bernhardt
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Publication number: 20040214090Abstract: Disclosed is a cyclic siloxane polymer electrolyte for use in lithium electrochemical storage devices such as secondary batteries and capacitors. Electrolyte polymers comprising poly(siloxane-g-ethylene oxides) with one or more poly(ethylene oxide) side chains directly bonded to Si atoms are convenient to synthesize, have a long shelf life, have ionic conductivity of over 10−4 S/cm at room temperature, do not evaporate up to 150° C., have a wide electrochemical stability window of over 4.5 V (vs. lithium), and are not flammable. Viscosity and conductivity can be optimized by controlling the size of siloxane ring or the length of poly(ethylene oxide) side chain. The polymer disclosed may also be used in solid electrolyte applications by use of solidifying agents or entrapping within solid polymers. Means to synthesize both 8 and 10 membered rings are described using both boron and triethylamine as catalysts.Type: ApplicationFiled: March 26, 2004Publication date: October 28, 2004Inventors: Robert C West, Qingzheng Wang, Khalil Amine
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Publication number: 20040209168Abstract: A nonaqueous battery, such as a lithium ion battery, is formed from a polymer electrolyte comprising: a vinylidene fluoride copolymer comprises 90 to 97 wt. % of vinylidene fluoride monomer units and 3 to 10 wt. % of units of at least one monomer copolymerizable with the vinylidene fluoride monomer and has an inherent viscosity of 1.5 to 10 dl/g. The polymer electrolyte stably retains the nonaqueous electrolytic solution in a large amount and has excellent strength in this state.Type: ApplicationFiled: May 19, 2004Publication date: October 21, 2004Inventors: Takumi Katsurao, Katsuo Horie, Yukio Ichikawa, Aisaku Nagai
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Patent number: 6803152Abstract: A nonaqueous electrolyte additive includes an organosilicon backbone including at least one ethylene oxide (CH2CH2O) unit, at least two pyridinium groups bound to the backbone, the pyridinium groups each bound to at least one halogen ion or halogen-containing anion. The additive is useful for forming improved liquid and polymer electrolytes for lithium ion and lithium metal batteries.Type: GrantFiled: April 19, 2002Date of Patent: October 12, 2004Assignee: ENER1 Battery CompanyInventors: Elena M. Shembel, Oleg V. Chervakov, Natalya I. Globa, Peter Novak
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Publication number: 20040197650Abstract: The invention provides a battery, which can improve battery characteristics such as high temperature storage characteristics. The battery comprises a battery device, wherein a cathode and an anode are wound with a separator in between. The anode contains an anode material capable of inserting and extracting Li as an anode active material. An electrolytic solution is impregnated in the separator. The electrolytic solution contains a solvent, and an electrolyte salt such as Li[B(CF3)4] dissolved in the solvent, which is expressed by a chemical formula of Li[B(RF1)(RF2)(RF3)RF4]. RF1, RF2, RF3, and RF4 represent a perfluoro alkyl group whose number of fluorine or carbon is from 1 to 12, respectively. Consequently, high temperature storage characteristics are improved.Type: ApplicationFiled: March 30, 2004Publication date: October 7, 2004Applicant: Sony CorporationInventors: Tadahiko Kubota, Momoe Adachi, Shigeru Fujita
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Patent number: 6794083Abstract: The present invention relates to mixtures of fluoroalkylphosphate salts and polymers, methods of producing same, and their use in electrolytes, batteries, capacitors, supercapacitors and galvanic cells.Type: GrantFiled: November 9, 2001Date of Patent: September 21, 2004Assignee: Merck Patent Gesellschaft mit beschränkter HaftungInventors: Michael Schmidt, Frank Ott, Michael Jungnitz, Nikolai Ignatyev, Andreas Kuehner
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Patent number: 6790553Abstract: A method for producing a bridged polymer membrane includes the steps of: obtaining a liquid medium comprising a basic polymer having an amino group in a repeating unit, a bridging agent, and a solvent; shaping the liquid medium into a membrane configuration to obtain the shaped membrane; and bridging the basic polymer by the bridging agent in the shaped membrane. A fuel cell has the bridged polymer membrane. The mechanical strength of the polymer electrolyte membrane is improved.Type: GrantFiled: September 6, 2001Date of Patent: September 14, 2004Assignee: Celanese Ventures GmbHInventor: Tetsu Yamamoto
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Publication number: 20040175626Abstract: The composite electrolyte for use in a thin plate rechargeable lithium battery comprises a porous or micro-porous inert, multi-layered polymer separator laminate which carries an adherent second polymer coating containing a dissociable lithium compound, and the multi-layered separator having adherent solid second polymer layer, is impregnated with an organic liquid containing another lithium salt. The porous or micro-porous separator laminate is made of multiple polymer layers, at least one of the member layers having melting temperature at least 20-C below the melting temperature of the other polymer member layers. The composite porous electrolyte is inserted between the electrodes of a rechargeable lithium battery. In another embodiment the porous polymer separator sheet has an adherent, dissociable lithium compound containing, solid second polymer layer on each of its major faces.Type: ApplicationFiled: March 15, 2004Publication date: September 9, 2004Applicant: Electrovaya Inc.Inventors: Sankar Dasgupta, Rakesh Bhola, James K. Jacobs
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Patent number: 6787267Abstract: The invention relates to an electrolyte for an electrochemical device. This electrolyte includes a first compound that is an ionic metal complex represented by the general formula (1); and at least one compound selected from special second to fourth compounds, fifth to ninth compounds respectively represented by the general formulas Aa+(PF6−)a, Aa+(ClO4−)a, Aa+(BF4−)a, Aa+(AsF6−)a, and Aa+(SbF6−)a, and special tenth to twelfth compounds, The electrolyte is superior in cycle characteristics and shelf life as compared with conventional electrolytes.Type: GrantFiled: November 28, 2001Date of Patent: September 7, 2004Assignee: Central Glass Company, LimitedInventors: Shoichi Tsujioka, Hironari Takase, Mikihiro Takahashi, Hiromi Sugimoto, Makoto Koide
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Patent number: 6783896Abstract: The invention relates to an electrolyte for an electrochemical device. This electrolyte includes a first compound that is an ionic metal complex represented by the general formula (1). The electrolyte may further include at least one compound selected from second to sixth compounds respectively represented by the general formulas Aa+(PF6−)a, Aa+(ClO4−)a, Aa+(BF4−)a, Aa+(AsF6−)a, and Aa+(SbF6−)a, and special seventh to twelfth compounds. The electrolyte can be superior in heat resistance, hydrolysis resistance, cycle characteristics and shelf life as compared with conventional electrolytes.Type: GrantFiled: October 3, 2001Date of Patent: August 31, 2004Assignee: Central Glass Company, LimitedInventors: Shoichi Tsujioka, Hironari Takase, Mikihiro Takahashi, Hiromi Sugimoto, Makoto Koide
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Publication number: 20040151984Abstract: The invention provides a proton conductive membrane excellent in heat resistance, which has sulfonic acid as ion exchange groups.Type: ApplicationFiled: August 15, 2003Publication date: August 5, 2004Applicants: JSR Corporation, Honda Giken Kogyo Kabushiki KaishaInventors: Kohei Goto, Mayumi Kakuta, Fusazumi Masaka, Kiyonori Kita, Naoki Mitsuta, Masaru Iguchi, Hiroshi Soma, Nagayuki Kanaoka
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Publication number: 20040131945Abstract: A porous element containing a fluoropolymer comprising vinylidene fluoride as a main unit and having a density of 0.55-1.30 g/cm3 and a Gurley value of not more than 150 sec/100 cc is used as a polymer substrate of a solid electrolyte to be placed between a positive electrode and a negative electrode. As a result, the solid electrolyte layer shows fine ion conductivity and an ion polymer secondary battery having strikingly improved low temperature characteristics, cycle characteristics and high-rate discharge characteristics as compared to conventional batteries can be obtained.Type: ApplicationFiled: August 11, 2003Publication date: July 8, 2004Inventors: Toshihiro Zushi, Seiji Okada, Itaru Gosho, Shogo Tanno, Mitsuhiro Marumoto
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Patent number: 6759170Abstract: A lithium ion electrochemical cell having high charge/discharge capacity, long cycle life and exhibiting a reduced first cycle irreversible capacity, is described. The stated benefits are realized by the addition of at least one carbonate additive to an electrolyte comprising an alkali metal salt dissolved in a solvent mixture including ethylene carbonate, dimethyl carbonate, ethyl methyl carbonate and diethyl carbonate. The preferred additive is either a linear or cyclic carbonate containing covalent O—X and O—Y bonds on opposite sides of a carbonyl group wherein at least one of the O—X and the O—Y bonds has a dissociation energy less than about 80 kcal/mole.Type: GrantFiled: September 5, 2002Date of Patent: July 6, 2004Assignee: Wilson Greatbatch Technologies, Inc.Inventors: Hong Gan, Esther S. Takeuchi, Robert Rubino
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Publication number: 20040126668Abstract: A lithium polymer secondary battery comprising: a negative electrode including a carbonaceous material, as an active material, obtainable by attaching or covering an amorphous carbon on the surface of graphite particle; an electrolyte layer; and a positive electrode having at least a metal oxide containing lithium as an active material, wherein the electrolyte layer comprising: a polymer containing a unit derived from vinylene carbonate; an organic solvent; and lithium salt.Type: ApplicationFiled: February 24, 2004Publication date: July 1, 2004Inventors: Naoto Nishimura, Masako Kitagawa, Motoaki Nishijima, Naoto Torata, Koichi Ui
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Patent number: 6733927Abstract: In a non-aqueous electrolyte secondary battery, the reaction between the non-aqueous electrolyte and the electrode is suppressed to reduce a decrease in the discharge capacity with the charge/discharge cycle progress and the deterioration of battery characteristics during high-temperature storage. At least one of a chargeable and dischargeable positive electrode, a non-aqueous electrolyte containing a lithium salt, and a chargeable and dischargeable negative electrode in a non-aqueous electrolyte secondary battery contains at least one selected from the group consisting of a phosphate having three aliphatic hydrocarbon groups having 7 to 12 carbon atoms, a phosphate having two aliphatic hydrocarbon groups having 1 to 12 carbon atoms or an aromatic hydrocarbon group, and a phosphate having an aliphatic hydrocarbon group having 1 to 12 carbon atoms or an aromatic hydrocarbon group.Type: GrantFiled: March 23, 2001Date of Patent: May 11, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hideharu Takezawa, Yasuhiko Bito, Hiromu Matsuda, Yoshinori Toyoguchi