Nitrogen Containing Organic Solvent Compound (e.g., Acetonitrile, Etc.) Patents (Class 429/339)
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Publication number: 20120171574Abstract: A surface-enabled, metal ion-exchanging battery device comprising a cathode, an anode, a porous separator, and a metal ion-containing electrolyte, wherein the metal ion is selected from (A) non-Li alkali metals; (B) alkaline-earth metals; (C) transition metals; (D) other metals such as aluminum (Al); or (E) a combination thereof; and wherein at least one of the electrodes contains therein a metal ion source prior to the first charge or discharge cycle of the device and at least the cathode comprises a functional material or nano-structured material having a metal ion-capturing functional group or metal ion-storing surface in direct contact with said electrolyte, and wherein the operation of the battery device does not involve the introduction of oxygen from outside the device and does not involve the formation of a metal oxide, metal sulfide, metal selenide, metal telluride, metal hydroxide, or metal-halogen compound.Type: ApplicationFiled: January 3, 2011Publication date: July 5, 2012Inventors: Aruna Zhamu, ChenGuang Liu, David Neff, Bor Z. Jang, Zhenning Yu
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Patent number: 8211578Abstract: An improved electrolyte for a cell having an anode comprising magnesium or magnesium alloy. The cell's cathode may desirably include iron disulfide (FeS2) as cathode active material. The improved electrolyte comprises a magnesium salt, preferably magnesium perchlorate dissolved in an organic solvent which preferably includes acetonitrile or mixture of tetrahydrofuran and propylene carbonate. The electrolyte includes an additive to retard the buildup of deleterious passivation coating on the magnesium anode surface, thereby enhancing cell performance. Such additive may preferably include 1-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF4), 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF6), lithium hexafluorophosphate (LiPF6), or aluminum chloride (AlCl3).Type: GrantFiled: June 9, 2009Date of Patent: July 3, 2012Assignee: The Gillette CompanyInventors: Zhiping Jiang, Rimma Sirotina, Nikolay Iltchev
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Publication number: 20120164543Abstract: An organic electrolyte solution includes a lithium salt; an organic solvent including a high permittivity solvent and a low boiling solvent; and a vinyl-based compound represented by Formula 1 below, wherein m and n are each independently integers of 1 to 10; X1, X2, and X3 each independently represent O, S, or NR9; and R1, R2, R3, R4, R5, R6, R7, R8, and R9 are represented in the detailed description. The organic electrolyte solution of the present invention and a lithium battery using the same suppress degradation of an electrolyte, providing improved cycle properties and life span thereof.Type: ApplicationFiled: February 29, 2012Publication date: June 28, 2012Applicant: SAMSUNG SDI CO., LTD.Inventors: Seok-soo Lee, Young-gyonn Ryu, Seung-sik Hwang, Dong-joon Lee, Boris A. Trofimov
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Publication number: 20120164541Abstract: A lithium-free, anion based charge transport electrochemical system that uses fluoride ion transporting electrolytes, including ionic liquids, with and without various additives to improve performance, is described. The fluoride ion transporting electrolyte can be wholly or partly an ionic liquid that is typically liquid at temperatures less than 200 degrees Celsius. In other embodiments, electrolytes that remain liquid at less than 100 degrees Celsius are useful.Type: ApplicationFiled: October 14, 2011Publication date: June 28, 2012Applicant: Contour Energy Systems, Inc.Inventors: Isabelle Darolles, Cedric M. Weiss, Maksudul M. Alam, Arunkumar Tiruvannamalai, Simon Christopher Jones
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Patent number: 8206853Abstract: The objective of the present invention is to prevent deterioration and expanding of anode active material and to improve charge-discharge cycle characteristics in a non-aqueous electrolyte secondary battery comprising an anode of which current collector has thereon a thin layer of an anode active material containing a metal. To solve this problem, in a non-aqueous electrolyte secondary battery wherein a thin layer of anode active material containing a metal which absorbs and discharges lithium is formed on a current collector and the thin layer of the anode active material is divided into columns by a gap formed along the thickness thereof, a compound represented by the following formula is contained in the non-aqueous electrolyte. A-N?C?O In the above formula, A represents an element or a group other than hydrogen.Type: GrantFiled: June 23, 2006Date of Patent: June 26, 2012Assignees: SANYO Electric Co., Ltd., Mitsubishi Chemical CorporationInventors: Keiji Saisho, Hidekazu Yamamoto, Masahiro Takehara
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Publication number: 20120141878Abstract: The present invention provides an electrolyte solution and a lithium ion secondary battery which maintain for a long period high battery characteristics represented by the discharge capacity retention rate after the charge/discharge cycle, and simultaneously achieve also the high safety represented by the flame retardation. The present invention provides an electrolyte solution containing a nonaqueous solvent, an electrolyte, a specific compound having a perfluoroalkyl group in the molecule, and an additive having a fluorine atom and/or a phosphorus atom in the molecule.Type: ApplicationFiled: June 9, 2010Publication date: June 7, 2012Applicant: ASAHI KASEI E-MATERIALS CORPORATIONInventors: Asami Ohashi, Yoshiyuki Ishii
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Publication number: 20120129056Abstract: In a molten salt battery 1, a positive electrode 2 including an active material film 22 arranged on an Al collector 21, a separator 3 formed of a glass cloth impregnated with a molten salt serving as an electrolyte, and a negative electrode 4 including an active material film 43 and a Zn film 42 arranged on an Al collector 41 are accommodated in an Al case 5. The active material film 43 contains an active material composed of a Sn—Na alloy. The active material film 22 and the active material film 43 occlude and emit Na ions of the molten salt. Thereby, provided are a negative electrode material for a battery, the negative electrode material having higher hardness on a surface side (active material side) than a Na negative electrode during the operation of the battery, suppressing the formation of Na dendrites.Type: ApplicationFiled: September 7, 2011Publication date: May 24, 2012Applicant: Sumitomo Electric Industries, Ltd.Inventors: Masatoshi Majima, Shinji Inazawa, Shoichiro Sakai, Koji Nitta, Atsushi Fukunaga, Chihiro Hiraiwa
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Film former-free electrolyte/separator system and use thereof in electrochemical energy accumulators
Patent number: 8173305Abstract: The invention relates to an electrolyte separator system comprising an ionic liquid, a conductive salt and a ceramic separator, and the use of the electrolyte separator system according to the invention in electrochemical energy storage systems, in particular of lithium metal and lithium ion batteries.Type: GrantFiled: April 27, 2006Date of Patent: May 8, 2012Assignee: Evonik Degussa GmbHInventors: Michael Holzapfel, Petr Novák, Carsten Jost, Anna Prodi-Schwab, Volker Hennige, Christian Hying -
Publication number: 20120107698Abstract: An electrochemical device, having an anode containing magnesium; a cathode stable to a voltage of at least 3.2 V relative to a magnesium reference; and an electrolyte containing a solvent and a LiCl complex of a magnesium halide salt of a sterically hindered secondary amine is provided. In a preferred embodiment the electrolyte contains tetrahydrofuran and 2,2,6,6-tetramethylpiperidinyl-magnesium chloride-lithium chloride complex.Type: ApplicationFiled: October 27, 2010Publication date: May 3, 2012Applicant: Toyota Motor Engineering & Manufacturing NAInventors: John MULDOON, Hee Soo Kim, Masaki Matsui Matsui
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Publication number: 20120107696Abstract: An electrode active material mainly includes an organic compound having, in a structural unit thereof, a conjugated diamine structure represented by the general formula (I), and an electrolyte includes a carbonate ester compound represented by the general formula (II). In the formulae, R1 to R4 represent substituted or unsubstituted alkyl groups, or the like, whereas X1 to X4 represent a hydrogen atom or a substituent. A secondary battery is achieved which has a high energy density and thus produces a high output, and has favorable cycle characteristics with a small capacity degradation even in the case of repeating charge and discharge.Type: ApplicationFiled: December 27, 2011Publication date: May 3, 2012Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Masaharu Sato, Satoshi Shigematsu, Koichi Watanabe, Yozo Miura, Takuya Koizumi
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Publication number: 20120100438Abstract: Provided are novel electrode material composite structures containing high capacity active materials formed into porous base structures. The structures also include shells that encapsulate these porous base structures. During lithiation of the active material, the shell mechanically constrains the porous base structure. The shell allows lithium ions to pass through but prevents electrolyte solvents from interacting with the encapsulated active material. In certain embodiments, the shell contains carbon, while the porous base structure contains silicon. Although silicon tends to swell during lithiation, the porosity of the base structure and/or void spaces inside the shell helps to accommodate this additional volume within the shell without breaking it or substantially increasing the overall size of the composite structure.Type: ApplicationFiled: October 20, 2011Publication date: April 26, 2012Applicant: AMPRIUS, INC.Inventors: Rainer J. Fasching, Zuqin Liu, Song Han, Ghyrn E. Loveness, Constantin I. Stefan
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Publication number: 20120094193Abstract: In accordance with one embodiment, an electrochemical cell includes a negative electrode including a form of lithium, a positive electrode spaced apart from the negative electrode and configured to use a form of oxygen and carbon dioxide as reagents in a reversible electrochemical reaction wherein Li2CO3 is formed and consumed at the positive electrode, a separator positioned between the negative electrode and the positive electrode, and an electrolyte including a salt.Type: ApplicationFiled: October 19, 2010Publication date: April 19, 2012Inventors: Paul Albertus, Venkatasubramanian Viswanathan, John F. Christensen, Boris Kozinsky, Roel Sanchez-Carrera, Timm Lohmann
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Publication number: 20120088162Abstract: An ion transporting solvent for use with batteries can be improved by simultaneously shortening a phosphazene compound's pendent groups, eliminating most or all of the distal ion carriers, and randomizing the solvent molecules so as to intentionally disrupt symmetry to the maximum degree possible. The combination of these strategies dramatically improves battery performance to the point where the performance recorded is comparable to batteries using conventional organic solvents.Type: ApplicationFiled: May 13, 2011Publication date: April 12, 2012Inventors: Mason K. Harrup, Thomas A. Luther, John Leslie Burba
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Publication number: 20120082901Abstract: Li-based anodes for use in an electric current producing cells having long life time and high capacity are provided. In certain embodiments, the Li-based anode comprises at least one anode active Li-containing compound and a composition comprising at least one polymer, at least one ionic liquid, and optionally at least one lithium salt. The composition may be located between the at least one Li-containing compound and the catholyte used in the electric current producing cell. In some embodiments, the at least one polymer may be incompatible with the catholyte. This configuration of components may lead to separation between the lithium active material of the anode and the catholyte. Processes for preparing the Li-based anode and to electric current producing cells comprising such an anode are also provided.Type: ApplicationFiled: September 30, 2011Publication date: April 5, 2012Applicants: BASF SE, Sion Power CorporationInventors: Rudiger Schmidt, Daher Michael Badine, Helmut Moehwald, Igor Kovalev, Yuriy V. Mikhaylik
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Publication number: 20120082872Abstract: Spiro ammonium salts as an additive for electrolytes in electric current producing cells, in particular electric current producing cells comprising a Li-based anode, are provided. In some embodiments, the electric current producing cell comprises a cathode, a Li-based anode, and at least one electrolyte wherein the electrolyte contains at least one spiro ammonium salt.Type: ApplicationFiled: September 30, 2011Publication date: April 5, 2012Applicants: BASF SE, Sion Power CorporationInventors: Rudiger Schmidt, Daher Michael Badine, Xiao Steimle, Helmut Moehwald, Igor Kovalev, Yuriy V. Mikhaylik
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Patent number: 8142936Abstract: The present invention relates to a nonaqueous electrolyte solution containing new additives and a lithium secondary battery including the same. More particularly, the invention relates to a nonaqueous electrolyte solution containing a lithium salt, an electrolyte compound, a first additive compound with an oxidation initiation potential of more than 4.2 V, and a second additive compound with an oxidation initiation potential of more than 4.2 V, which is higher in oxidation initiation potential than the first additive, and deposits oxidative products or form a polymer film, in oxidation, as well as a lithium secondary battery including the same. The present invention can provide a lithium secondary battery excellent in both the battery performance and the battery safety in overcharge by the combined use of the first additive and the second battery as additives to the nonaqueous electrolyte solution.Type: GrantFiled: February 10, 2004Date of Patent: March 27, 2012Assignee: LG Chem, Ltd.Inventors: Soon Ho Ahn, Jae Hyun Lee, Jeong Ju Cho, Ho Chun Lee, Mi Young Son, Hyeong Jin Kim, Han Ho Lee
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Patent number: 8137849Abstract: The present invention relates to a phosphate-based acrylate crosslinking agent for polymer electrolyte and a polymer electrolyte composition comprising the phosphate-based acrylate crosslinking agent, and in particular to a phosphate-based acrylate crosslinking agent where a phosphate-based compound is introduced with a polyalkylene oxide group and an acrylate group and a polymer electrolyte composition comprising the phosphate-based acrylate crosslinking agent. The polymer electrolyte composition can be applied to electrolyte thin film and polymer electrolyte of small and large capacity lithium-polymer secondary battery due to its superior ionic conductivity and electrochemical and thermal stability, where the physical properties of electrolyte composition may be controlled by means of the length of polyalkylene oxide of the crosslinking agent.Type: GrantFiled: July 26, 2007Date of Patent: March 20, 2012Assignee: Korea Research Institute of Chemical TechnologyInventors: Yongku Kang, Changjin Lee, Jun Kyoung Lee, Joung In Lee
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Publication number: 20120052400Abstract: Disclosed herein is an electrode structure for an energy storage apparatus. The electrode structure according to an exemplary embodiment of the present invention includes a current collector; and an active material layer formed in the current collector, wherein the active material layer includes: an active material; and a conductive material having a relatively higher content than that of the active material as being away from the current collector.Type: ApplicationFiled: August 31, 2011Publication date: March 1, 2012Inventors: Hak Kwan KIM, Bae Kyun KIM, Dong Hyeok CHOI, Hyun Chul JUNG
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Publication number: 20120052399Abstract: A nonaqueous electrolyte battery includes a positive electrode containing an active material, a negative electrode, and a nonaqueous electrolyte, the negative electrode including a current collector and a negative electrode active material supported by the current collector, the negative electrode active material having a Li insertion potential not lower than 0.2V (vs. Li/Li+) and an average primary particle diameter not larger than 1 ?m, and a specific surface area of the negative electrode, excluding a weight of the current collector, as determined by the BET method falls within a range of 3 to 50 m2/g.Type: ApplicationFiled: October 31, 2011Publication date: March 1, 2012Inventors: Norio Takami, Hiroki Inagaki
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Publication number: 20120045698Abstract: A non-aqueous liquid electrolyte to be used for a non-aqueous liquid electrolyte secondary battery containing a anode electrode and a cathode electrode, capable of intercalating and deintercalating lithium ions, and the non-aqueous liquid electrolyte. In the non-aqueous liquid electrode, the anode electrode contains an anode electrode active material having at least one kind of atom selected from the group consisting of Si atom, Sn atom and Pb atom. The non-aqueous liquid electrolyte also contains a carbonate having at least either an unsaturated bond or a halogen atom, and also contains a compound represented by formula (III-1) as defined herein.Type: ApplicationFiled: October 31, 2011Publication date: February 23, 2012Applicant: Mitsubishi Chemical CorporationInventor: Noriko SHIMA
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Publication number: 20120045697Abstract: Disclosed are an electrolyte for a rechargeable lithium battery that includes a lithium salt, a non-aqueous organic solvent, and an additive including a triazine-based compound represented by the following Chemical Formula 1 and fluoroethyl carbonate, and a rechargeable lithium battery including the electrolyte. where R1, R2, and R3 are the same as described in the detailed description.Type: ApplicationFiled: August 15, 2011Publication date: February 23, 2012Applicants: TECHNO SEMICHEM CO., LTD., SAMSUNG SDI CO., LTD.Inventors: Na-Rae PARK, Jin-Hyunk LIM, Su-Hee HAN, Mi-Hyeun OH, Eun-Gi SHIM
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Patent number: 8119293Abstract: A non-aqueous electrolyte secondary cell can be charged at a high voltage of 4.3V or more and has excellent cycle characteristics and excellent high-temperature storage characteristics. The cell includes positive and negative electrodes capable of inserting and extracting lithium, and a non-aqueous electrolyte. The non-aqueous electrolyte contains a non-aqueous solvent, 1,3-dioxane and a dinitrile compound additives, and an electrolyte salt. The non-aqueous solvent contains ethylene carbonate in the range of 25% to 40% by volume under the conditions of 25° C. and 1 atm.Type: GrantFiled: February 23, 2010Date of Patent: February 21, 2012Assignee: SANYO Electric Co., Ltd.Inventors: Masato Iwanaga, Noriko Yamashita
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Publication number: 20120028133Abstract: Provided are an electrolyte which may prevent the degradation of the battery performance by including a functional group which can react with a side reaction site which is responsible for decomposition of negative electrode material components and a functional group which can react with moisture which is responsible for decomposition of positive electrode material components in an electrolyte of the battery to ensure the stability of the battery at high temperatures, and a secondary battery manufactured by adding the same. The present invention may employ a compound including a functional group which can react with a side reaction site of a negative electrode material and a functional group which can react with moisture to maximize the improvement of the storage performance of a secondary battery at high temperatures.Type: ApplicationFiled: March 2, 2010Publication date: February 2, 2012Applicant: LG CHEM, LTD.Inventors: Yo Jin Kim, Han Ho Lee, Seung Don Choi
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Publication number: 20120021300Abstract: 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: ApplicationFiled: August 4, 2009Publication date: January 26, 2012Applicant: UBE INDUSTRIES, LTD.Inventors: Koji Abe, Masahide Kondo
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Publication number: 20120009486Abstract: A secondary battery capable of improving cycle characteristics is provided. The secondary battery includes a cathode 21, an anode 22, and an electrolytic solution. A separator 23 provided between the cathode 21 and the anode 22 is impregnated with the electrolytic solution. The electrolytic solution contains a solvent and an electrolyte salt. The solvent contains a cyclic compound having a disulfonic acid anhydride group (—S(?O)2—O—S(?O)2—) and succinonitrile. Compared to a case that the solvent does not contain both the cyclic compound having the disulfonic acid anhydride group and succinonitrile or a case that that the solvent contains at least one thereof, chemical stability of the electrolytic solution is improved. Thus, even if charge and discharge are repeated, electrolytic solution decomposition is inhibited.Type: ApplicationFiled: March 18, 2010Publication date: January 12, 2012Applicant: SONY CORPORATIONInventors: Yuko Hayakawa, Tadahiko Kubota, Masayuki Ihara
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Publication number: 20120009487Abstract: A non-aqueous electrolyte solution for a lithium secondary battery includes a non-aqueous solvent and a lithium salt dissolved in the non-aqueous solvent. The lithium salt includes LiN(CF3SO2)2. The non-aqueous electrolyte solution further includes a sulfate-based compound and vinylene carbonate. A lithium secondary battery having the above non-aqueous electrolyte solution may keep overall high temperature performance in a high level and also improve low temperature power characteristics.Type: ApplicationFiled: March 26, 2010Publication date: January 12, 2012Applicant: LG CHEM, LTD.Inventors: Ra-Young Hwang, Ji-Sang Yu
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Publication number: 20120002349Abstract: One object is to provide a power storage device including an electrolyte using a room-temperature ionic liquid which includes a univalent anion and a cyclic quaternary ammonium cation having excellent reduction resistance. Another object is to provide a high-performance power storage device. A room-temperature ionic liquid which includes a cyclic quaternary ammonium cation represented by a general formula (G1) below is used for an electrolyte of a power storage device. In the general formula (G1), one or two of R1 to R5 are any of an alkyl group having 1 to 20 carbon atoms, a methoxy group, a methoxymethyl group, and a methoxyethyl group. The other three or four of R1 to R5 are hydrogen atoms. A? is a univalent imide anion, a univalent methide anion, a perfluoroalkyl sulfonic acid anion, tetrafluoroborate (BF4?), or hexafluorophosphate (PF6?).Type: ApplicationFiled: June 23, 2011Publication date: January 5, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Kyosuke ITO, Toru ITAKURA
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Publication number: 20110311884Abstract: The invention relates to a pentacyclic anion salt and to the use thereof in electrolyte compositions. The compound comprises an inorganic, organic or organometallic cation M of valency m (1?m?3) and m anions corresponding to the formula (I) in which Rf is a —CFZ?Z? group in which Z? is F or a perfluoroalkyl group having from 1 to 3 carbon atoms, and Z? is an H, F or Cl group, an optionally fluorinated or perfluorinated alkoxy group having from 1 to 5 carbon atoms, an optionally fluorinated or perfluorinated oxaalkoxy group having from 1 to 5 carbon atoms or an optionally fluorinated or perfluorinated alkyl group having from 1 to 5 carbon atoms; Z? being other than F when Z? is F. An electrolyte composition comprises said salt in solution in a liquid solvent or a polymer solvent.Type: ApplicationFiled: August 28, 2009Publication date: December 22, 2011Inventors: Michel Armand, Sylvie Grugeon, Stephane Laruelle, Maria Bukowska, Przemyslaw Szczecinski, Wladyslaw Wieczorek, Leszek Niedzicki, Bruno Scrosati, Stefania Panero, Priscilla Realle
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Publication number: 20110300453Abstract: A non-aqueous electrolyte solution is provided that realizes a large capacity, exhibits high storage characteristics and cycle characteristics, and is capable of inhibiting gas generation. The non-aqueous electrolyte solution comprises a lithium salt and a non-aqueous solvent, and further comprises: a cyclic carbonate compound having an unsaturated bond in a concentration of 0.01 weight % or higher and 8 weight % or lower; and a compound expressed by general formula (Ia) in a concentration of 0.01 weight % or higher and 5 weight % or lower. (in the formula (Ia), R11 and R12 represent, independently of each other, an organic group that is composed of one or more carbon atoms and hydrogen atoms and may optionally contain one or more oxygen atoms but excludes unsaturated bonds, provided that at least either R11 or R12 has an ether linkage. The total number of carbon atoms of R11 and R12 is between 3 and 18, and the total number of oxygen atoms contained in R11 and R12 is between 1 and 6.Type: ApplicationFiled: August 12, 2011Publication date: December 8, 2011Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Minoru KOTATO, Kunihisa Shima, Shinichi Kinoshita, Asao Kominato, Takashi Fujii, Teppei Yamada
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Patent number: 8057937Abstract: Disclosed herein is a hybrid battery using an electrochemically stable electrolyte composition and electrodes suitable for use in the electrolyte composition. The hybrid battery is non-toxic and highly stable, and has improved high-current charge/discharge characteristics. The hybrid battery comprises an electrode unit consisting of an anode and a cathode, a separator for electrically separating the anode and the cathode, and an electrolyte filled in a space between the anode and the cathode so as to form an electric double layer on surfaces of the anode and cathode when a voltage is applied wherein the electrolyte contains a mixture of a lithium salt, an ammonium salt and a pyrrolidinium salt as solutes in a carbonate-based solvent so that the solute mixture has a concentration of 1.0-2.5 mol/L.Type: GrantFiled: June 14, 2006Date of Patent: November 15, 2011Assignee: Vina Technology Co., Ltd.Inventors: Do Kyong Sung, Jun Tae Jung
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Publication number: 20110262816Abstract: The described invention relates to primary and secondary electrochemical energy storage systems, particularly to such systems as battery cells, which use materials that take up and release ions as a means of storing and supplying electrical energy, and methods of fabrication thereof.Type: ApplicationFiled: January 12, 2010Publication date: October 27, 2011Inventor: Glenn Amatucci
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Publication number: 20110256457Abstract: A nonaqueous secondary battery, comprising: a positive electrode; a negative electrode; and a nonaqueous electrolyte solution, the nonaqueous electrolyte solution containing as a flame retardant a compound of the general formula (I): wherein R1 and R2, which are the same or different, each represents a group that is selected from a hydrogen atom, a lower alkyl, lower alkenyl, lower alkoxy, lower alkoxycarbonyl, lower alkylcarbonyl, lower cycloalkyl or aryl group, and that may have a substituent, or R1 and R2 taken together are a methylene group that may have a substituent, or R1 and R2 taken together form a ring structure containing a nitrogen atom to which R1 and R2 are attached, the ring structure being a five-membered or six-membered hydrocarbon ring that may have one or two oxo groups, or a five-membered or six-membered heterocycle that may further contain a nitrogen atom; n is 0 or 1; when n is 0, R3 is a group that is selected from a hydrogen atom, a halogen atom, a lower alkyl, lower alkenyl, lowType: ApplicationFiled: April 18, 2011Publication date: October 20, 2011Inventor: Hisayuki UTSUMI
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Publication number: 20110250503Abstract: A battery electrolyte solution contains from 0.01 to 80% by weight of an aromatic phosphorus compound. The aromatic phosphorus compound provides increased thermal stability for the electrolyte, helping to reduce thermal degradation, thermal runaway reactions and the possibility of burning. The aromatic phosphorus compound has little adverse impact on the electrical properties of the battery, and in some cases actually improves battery performance.Type: ApplicationFiled: November 16, 2009Publication date: October 13, 2011Inventors: David R. Wilson, Ravi B. Shankar, Houxiang Tang, Andrew J. Pasztor, JR., Peter M. Margl, William J. Kruper, JR., Mark D. Newsham, Jing Jin, Matthew M. Yonkey, Deidre A. Strand, Thomas D. Gregory, Jamie L. Cohen, Jeremy R. Stajdl
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Publication number: 20110250509Abstract: A secondary battery capable of improving battery characteristics is provided. The secondary battery includes a cathode 21 containing a cathode active material capable of inserting and extracting an electrode reactant, an anode 22 containing an anode active material capable of inserting and extracting the electrode reactant, and an electrolyte containing a solvent and an electrolyte salt. At least one of the cathode 21, the anode 22, and the electrolyte contains a radical scavenger compound. The radical scavenger compound is a compound in which a group having a radical scavenger function exists as a matrix, to which one or more carboxylic metal bases or one or more sulfonic metal bases are introduced. Chemical stability of the cathode 21, the anode 22, or the electrolyte containing the radical scavenger compound is improved. Thus, at the time of charge and discharge, decomposition reaction of the electrolytic solution is easily inhibited.Type: ApplicationFiled: June 30, 2009Publication date: October 13, 2011Applicant: SONY CORPORATIONInventors: Hiroyuki Yamaguchi, Shunsuke Saito, Toru Odani, Masayuki Ihara, Tadahiko Kubota
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Publication number: 20110250508Abstract: A positive electrode material is provided which is a blended combination of lithium nickel cobalt oxide (and aluminum substituted compounds thereof) and lithium nickel manganese cobalt oxide. Also provided Is a non-aqueous electrolyte lithium secondary battery having high specific capacity and good thermal stability characteristics.Type: ApplicationFiled: October 13, 2009Publication date: October 13, 2011Inventors: Jordan K. Lampert, Joseph DiCarlo, Kirill Bramnik, Prashant Chintawar
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Publication number: 20110244305Abstract: An electrochemical device, such as a battery or power source, provides improved performance under stringent or extreme conditions. Such an electrochemical device for use in high temperature conditions may include at least a cathode, a lithium-based anode, a separator, and an ionic liquid electrolyte. This device also may include a current collector and housing that are electrochemically inert with respect to other components of the device. This electrochemical device may operate at temperatures ranging from 0 to 180, 200, 220, 240, and 260° C.Type: ApplicationFiled: April 6, 2011Publication date: October 6, 2011Inventors: Wenlin Zhang, Richard Frerker, Iain Cooper, Catherine Busser, Arunkumar Tiruvannamalai, Jason Hsu-Feng Cheng, Joseph Ralph Wong, Simon Jones
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Publication number: 20110223492Abstract: To provide a nonaqueous electrolyte secondary battery with a small increase in internal resistance and less gas generation during high-temperature charged storage, and with a high residual capacity, when using a non-aqueous electrolyte containing a nitrile group-containing compound. The nonaqueous electrolyte secondary battery includes a positive electrode plate containing positive electrode active material, a negative electrode plate containing negative electrode active material, a nonaqueous electrolyte containing a nitrile group-containing compound, and a separator provided between the positive electrode plate and the negative electrode plate, and is also provided with a layer of inorganic particles between the positive electrode plate and the separator or between the negative electrode plate and the separator. It is preferable that the layer of inorganic particles be formed on a surface of the positive electrode plate.Type: ApplicationFiled: March 2, 2011Publication date: September 15, 2011Applicant: SANYO ELECTRIC CO., LTD.Inventors: Nobuhiro SAKITANI, Tatsuya AIZAWA, Satoshi YAMAMOTO
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Publication number: 20110214895Abstract: A lithium secondary battery capable of obtaining superior cycle characteristics, superior storage characteristics, and superior load characteristics is provided. The lithium secondary battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution contains a nonaqueous solvent, a lithium ion, at least one of nitrogen-containing organic anion having a Lewis acidic ligand, and at least one of inorganic anion having fluorine and an element of Group 13 to Group 15 in the long period periodic table as an element.Type: ApplicationFiled: March 1, 2011Publication date: September 8, 2011Applicant: SONY CORPORATIONInventors: MASAYUKI IHARA, TADAHIKO KUBOTA
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Publication number: 20110212359Abstract: The present invention provides a lithium-ion electrochemical cell comprising an ionic liquid electrolyte solution and a positive electrode having a carbon sheet current collector.Type: ApplicationFiled: November 23, 2010Publication date: September 1, 2011Applicant: Leyden Energy, Inc.Inventors: Hongli Dai, Michael Erickson, Marc Juzkow
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Patent number: 8007680Abstract: The present invention has for its object to provide an electrolyte solution which can dramatically suppress the time degradation in performance of an electrochemical device, especially an electrochemical capacitor. The present invention relates to an electrolyte solution for electrochemical device which comprises an imidazolium salt (A) represented by the general formula (1) as a main component, wherein the content of the imidazolium salt (B) represented by the general formula (2) is not more than 15% by weight to the total weight of the imidazolium salt (A) and imidazolium salt (B); (in the formula, R1, R2 and R3 may be the same or different and each represents an alkyl group containing 1 to 3 carbon atoms; R4 and R5 may be the same or different and each represents an hydrogen atom or an alkyl group containing 1 to 3 carbon atoms; and X? represents a counter anion) (in the formula, R1, R3, R4, R5 and X? are the same as the definition for the general formula (1)).Type: GrantFiled: September 28, 2006Date of Patent: August 30, 2011Assignees: Sanyo Chemical Industries, Ltd., Panasonic CorporationInventors: Koji Fujioka, Yoshihiko Akazawa, Yasuyuki Ito, Satomi Onishi
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Patent number: 7999449Abstract: The present invention relates to an electrode, wherein a substrate comprises a porous carbon material and an electroconductive polymer layer formed by an electrolytic polymerization method is provided substantially on the substrate; the electrode, wherein the porous carbon material comprises at least one porous carbon material selected from the group consisting of a carbon paper, a carbon fiber, a porous carbon sheet and an activated carbon sheet; and an actuator having the above electrode as a counter electrode.Type: GrantFiled: March 24, 2005Date of Patent: August 16, 2011Assignee: EAMEX CorporationInventors: Susumu Hara, Tetsuji Zama
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Publication number: 20110195283Abstract: An organic electrolyte solution for use in a redox flow battery and the redox flow battery including the organic electrolyte solution has a high energy density because re-precipitation is prevented in the organic electrolyte solution or eduction is prevented in an electrode during reduction of a metal ion used as an electrolyte.Type: ApplicationFiled: January 28, 2011Publication date: August 11, 2011Applicant: Samsung Electronics Co., Ltd.Inventors: Hee-young Sun, Joung-won Park, Doo-yeon Lee, Seung-uk Son
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Publication number: 20110189547Abstract: Disclosed are an additive for improving charge/discharge characteristics of a lithium-ion cell, a nonaqueous electrolytic solution containing the additive, and a lithium-ion cell using the additive and/or the nonaqueous electrolytic solution. The additive serves as a solvent for a fluorine resin, such as poly(vinylidene fluoride), which is incorporated as an adhesive in a positive electrode containing a lithium-transition metal oxide capable of absorbing and releasing lithium and a negative electrode containing a carbon material capable of absorbing and releasing lithium. The additive comprises three compounds selected, respectively, from a 2-pyrrolidinone compound group, a cyclic alkyl compound group, and a cyclic pentanone compound group.Type: ApplicationFiled: April 13, 2011Publication date: August 4, 2011Inventors: Xianming Wang, Yoshitsugu Sone, Saburo Kuwajima, Kenichi Kuwajima
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Publication number: 20110183216Abstract: Disclosed is a non-aqueous electrolyte including an electrolyte salt and an electrolyte solvent, the non-aqueous electrolyte further including a compound containing both a carboxy group and a (meth)acrylic group, and a secondary battery including the non-aqueous electrolyte. The use of the compound containing both the carboxy group and the (meth)acrylic group as a component for an electrolyte significantly reduces the increase of battery thickness at high temperature storage.Type: ApplicationFiled: August 8, 2008Publication date: July 28, 2011Applicant: LG CHEM, LTD.Inventors: Soojin Kim, Jeong-ju Cho
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Publication number: 20110183215Abstract: A new cathode design is provided comprising a cathode active material mixed with a binder and a conductive diluent in at least two differing formulations. Each of the formulations exists as a distinct cathode layer. After each layer is pressed or sheeted individually, a first one of the layers is contacted to a current collector. The other layer is then contacted to the opposite side of the layer contacting the current collector. Therefore, by using electrodes comprised of layers, where each layer is optimized for a desired characteristic (i.e. high capacity, high power, high stability), the resulting battery will display improved function over a wide range of applications. Such an exemplary cathode is comprised of: SVO (100?x %)/SVO (100?y %)/current collector/SVO (100?y %)/SVO (100?x %), wherein x and y are different and represent percentages of non-active materials.Type: ApplicationFiled: April 2, 2007Publication date: July 28, 2011Applicant: Greatbatch Ltd.Inventors: Amy C. Marschilok, Randolph A. Leising, Esther S. Takeuchi
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Publication number: 20110177398Abstract: Electrochemical cells including components and configurations for electrochemical cells, such as rechargeable lithium batteries, are provided. The electrochemical cells described herein may include a combination of components arranged in certain configurations that work together to increase performance of the electrochemical cell. In some embodiments, such combinations of components and configurations described herein may minimize defects, inefficiencies, or other drawbacks that might otherwise exist inherently in prior electrochemical cells, or that might exist inherently in prior electrochemical cells using the same or similar materials as those described herein, but arranged differently.Type: ApplicationFiled: August 24, 2010Publication date: July 21, 2011Applicant: Sion Power CorporationInventors: John D. Affinito, Yuriy V. Mikhaylik, Chariclea Scordilis-Kelley
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Patent number: 7981551Abstract: The present invention relates to an electrolyte for a lithium ion rechargeable battery and a lithium ion rechargeable battery including the same. The electrolyte includes a non-aqueous organic solvent, a lithium salt, and triphenyl phosphate. A lithium ion rechargeable battery including the electrolyte has improved overcharge stability and shows excellent chemical properties including reducing swelling, high-temperature storage stability, and cycle life characteristics.Type: GrantFiled: May 31, 2005Date of Patent: July 19, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Cheon Soo Kim, Hyung Bok Lee, Kwang Sup Kim, Sang Ho Lee, Joong Heon Kim, Tae Shik Earmme, Kwang Soo Yeo, Chan Hee Lee
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Publication number: 20110165472Abstract: Disclosed is a lithium secondary battery comprising a cathode including a lithium-containing transition metal oxide, an anode including a carbon-based material, and a non-aqueous electrolyte with addition of a compound of formula (1). Incorporation of the compound (1) into the electrolyte significantly improves the high-temperature performance and cycle life characteristics of the battery.Type: ApplicationFiled: March 4, 2011Publication date: July 7, 2011Inventors: Jonghwan Kim, Jisang Yu, Jeong-Ju Cho, Hochun Lee, Joomi Jeon, Yongsu Choi, Ra Young Hwang
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Publication number: 20110159376Abstract: Provided is an anode for use in electrochemical cells, wherein the anode active layer has a first layer comprising lithium metal and a multi-layer structure comprising single ion conducting layers and polymer layers in contact with the first layer comprising lithium metal or in contact with an intermediate protective layer, such as a temporary protective metal layer, on the surface of the lithium-containing first layer. Another aspect of the invention provides an anode active layer formed by the in-situ deposition of lithium vapor and a reactive gas. The anodes of the current invention are particularly useful in electrochemical cells comprising sulfur-containing cathode active materials, such as elemental sulfur.Type: ApplicationFiled: March 3, 2011Publication date: June 30, 2011Applicant: Sion Power CorporationInventors: Terje A. Skotheim, Christopher J. Sheehan, Yuriy V. Mikhaylik, John D. Affinito
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Publication number: 20110151340Abstract: A non-aqueous electrolyte includes: at least one ionically conducting salt, a non-aqueous, anhydrous solvent for the ionically conductive salt, said solvent being selected to achieve a lithium transference number between 0.45 and 1.0, at least one oxide in a particulate form, said oxide being selected such that it is not soluble in said solvent and such that it is water-free.Type: ApplicationFiled: June 19, 2009Publication date: June 23, 2011Applicants: Max-Planck-Gesellschaft zur Forderung der Wissenschaften E.V., Westfälische Wilhelms-Universität,MünsterInventors: Nitin Kaskhedikar, Joachim Maier, Dieter Wiemhöfer, Yunus Karatas