Nitrogen Is Ring Member Of The Hetero Ring Patents (Class 429/328)
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Patent number: 8420266Abstract: A nonaqueous secondary battery comprising: a positive electrode; a negative electrode; and a nonaqueous electrolyte solution, wherein the nonaqueous electrolyte solution contains at least a cyclic nitrogen-containing compound represented by the general formula (1): wherein X represents an optionally branched divalent group derived from a chain saturated hydrocarbon and having 1 to 5 carbon atoms, ?C?CH2, ?C?O, ?C?S?O, ?O or ?S; and A1 and A2 may be the same or different and each represent an optionally substituted methylene group, ?C?O or ?SO2.Type: GrantFiled: May 15, 2009Date of Patent: April 16, 2013Assignee: Sharp Kabushiki KaishaInventor: Hisayuki Utsumi
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Publication number: 20130089792Abstract: An electrochemical cell is described. The electrochemical cell includes an anode, a cathode, a separator between said anode and said cathode, and an electrolyte. The electrolyte includes a salt dissolved in an organic solvent. The separator in combination with the electrolyte has an area specific resistance less than 2 ohm-cm2. The electrochemical cell has an interfacial anode to cathode ratio of less than about 1.1.Type: ApplicationFiled: November 30, 2012Publication date: April 11, 2013Applicant: THE GILLETTE COMPANYInventor: THE GILLETTE COMPANY
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Publication number: 20130071758Abstract: The nonaqueous electrolyte for an electrochemical device of the present invention includes at least one selected from an imide compound represented by the general formula (1) and an imide compound represented by the general formula (2): where R1 is an organic residue or an F-containing organic residue, X1 and X2 are each H, F, an organic residue or an F-containing organic residue, and X1 and X2 may be the same or different from each other; and where R2 is an organic residue or an F-containing organic residue, and H of a benzene ring may be partially or entirely replaced with F.Type: ApplicationFiled: September 13, 2012Publication date: March 21, 2013Applicant: HITACHI MAXELL ENERGY, LTD.Inventors: Masayuki OYA, Mitsuhiro KISHIMI, Fusaji KITA
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Patent number: 8399127Abstract: A nonaqueous electrolyte secondary battery, comprising a positive electrode having a positive-electrode active material layer reversibly inserting and extracting lithium ions on a positive-electrode current collector, a negative electrode having a negative-electrode active material layer reversibly inserting and extracting lithium ions on a negative-electrode current collector, and a nonaqueous electrolyte solution, wherein at least one of the positive and negative electrodes has a film on the surface and at least one of the positive electrode, the negative electrode and the nonaqueous electrolyte solution contains a nitrogen-containing cyclic compound. Such a nonaqueous electrolyte secondary battery is superior in high-temperature storage stability allowing preservation of favorable discharge rate even after high-temperature storage.Type: GrantFiled: February 20, 2008Date of Patent: March 19, 2013Assignee: Panasonic CorporationInventors: Masaki Deguchi, Tooru Matsui, Hiroshi Yoshizawa
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Patent number: 8394540Abstract: A secondary battery capable of improving the cycle characteristics is provided. The secondary battery includes a cathode and an anode oppositely arranged with a separator in between, and an electrolytic solution. At least one of the cathode, the anode, the separator, and the electrolytic solution contains a sulfone compound having a carbonate group and a sulfonyl group.Type: GrantFiled: December 16, 2008Date of Patent: March 12, 2013Assignee: Sony CorporationInventors: Hiroyuki Yamaguchi, Masayuki Ihara, Tadahiko Kubota
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Patent number: 8389162Abstract: An electrolyte for a rechargeable lithium battery that includes a non-aqueous organic solvent, a lithium salt, and an electrolyte additive. The electrolyte additive includes 2 to 6 wt % of succinonitrile, 2 to 6 wt % of alkane sultone, and 1 to 3 wt % of vinylethylene carbonate based on the total weight of the electrolyte.Type: GrantFiled: September 15, 2009Date of Patent: March 5, 2013Assignee: Samsung SDI Co., Ltd.Inventors: Duck-Chul Hwang, Sang-Min Lee, Kyoung-Han Yew, Sang-Jin Kim
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Patent number: 8304117Abstract: A gel polymer electrolyte precursor and a rechargeable cell comprising the same are provided. The gel polymer electrolyte precursor comprises a bismaleimide monomer or bismaleimide oligomer, a compound having formula (I): a non-aqueous metal salt electrolyte, a non-protonic solvent, and a free radical initiator, wherein the bismaleimide oligomer is prepared by reaction of barbituric acid and bismaleimide, X comprises oxygen, organic hydrocarbon compounds, organic hydrocarbon oxide compounds, oligomers or polymers, n is 2 or 3, and A independently comprises wherein m is 0˜6, X comprises hydrogen, cyano, nitro or halogen, and R1 independently comprises hydrogen or C1˜4 alkyl.Type: GrantFiled: December 28, 2007Date of Patent: November 6, 2012Assignee: Industrial Technology Research InstituteInventors: Yueh-Wei Lin, Tsung-Hsiung Wang, Jing-Pin Pan, Chang-Rung Yang, Jung-Mu Hsu
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Publication number: 20120276456Abstract: Electrolyte, comprising an aprotic solvent, a lithium salt as conducting salt, and an additive, characterized in that the additive is a compound which contains a protonable nitrogen atom and is hydrolysable by water.Type: ApplicationFiled: August 27, 2010Publication date: November 1, 2012Applicant: LI-TEC BATTERY GMBHInventors: Peter Pilgram, Rolf-Walter Terwonne, Denny Thiemig, Joerg Kaiser, Andreas Gutsch
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Patent number: 8273484Abstract: Nitrogen silylated compounds are useful as additives in a nonaqueous electrolytic solution. The electrolytic solution including such additives is suitable for use in electrochemical cells such as lithium and lithium ion batteries. Batteries using this electrolytic solution have long cycle life and high capacity retention.Type: GrantFiled: May 26, 2005Date of Patent: September 25, 2012Assignee: Novolyte Technologies, Inc.Inventors: Wu Xu, Zhongyi Deng, Pascal Bolomey
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Patent number: 8257870Abstract: A non-aqueous electrolyte for a battery comprises a non-aqueous solvent containing a specified cyclic phosphazene compound and a specified difluorophosphate compound, a specified aniline derivative and a support salt.Type: GrantFiled: July 13, 2007Date of Patent: September 4, 2012Assignee: Bridgestone CorporationInventor: Yasuo Horikawa
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Patent number: 8247117Abstract: The present invention relates to ionic liquids having low melting points, low viscosities and high electrical conductivities; and more specifically, to ionic liquids including at least one organic onium ion and at least one anion represented by the formula: [Z—BF3]?, wherein Z is an alkyl group, an alkenyl group, or a fluoroalkenyl group. The ionic liquids according to the invention are capable of easily dissolving electrolytes such as lithium salts, and are also nonflammable and have low viscosities; therefore, the ionic liquids are suitable for use as electrolyte solvents for lithium batteries such as lithium secondary batteries, electric double-layer capacitors, and the like. The ionic liquids according to the invention are suitable for use in electrochemical devices such as lithium secondary batteries, fuel cells, solar batteries, electrical double-layer capacitors and the like; as solvents for chemical reactions; and as lubricants.Type: GrantFiled: November 22, 2005Date of Patent: August 21, 2012Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Hajime Matsumoto, Zhi-Bin Zhou
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Patent number: 8232471Abstract: A squarylium dye represented by formula (1): wherein A1 and B1 each independently represents a ring structure, and R1 and R2 each independently represents a substituent having a carbon number of 1 to 12.Type: GrantFiled: June 2, 2008Date of Patent: July 31, 2012Assignee: FUJIFILM CorporationInventors: Kimiatsu Nomura, Tetsu Kitamura, Tetsuro Mitsui
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Publication number: 20120171579Abstract: A non-aqueous electrolyte including a lithium salt, an organic solvent, and an electrolyte additive is provided. The electrolyte additive is a meta-stable state nitrogen-containing polymer formed by reacting Compound (A) and Compound (B). Compound (A) is a monomer having a reactive terminal functional group. Compound (B) is a heterocyclic amino aromatic derivative as an initiator. A molar ratio of Compound (A) to Compound (B) is from 10:1 to 1:10. A lithium secondary battery containing the non-aqueous electrolyte is further provided. The non-aqueous electrolyte of this disclosure has a higher decomposition voltage than a conventional non-aqueous electrolyte, such that the safety of the battery during overcharge or at high temperature caused by short-circuit current is improved.Type: ApplicationFiled: December 29, 2011Publication date: July 5, 2012Applicant: Industrial Technology Research InstituteInventors: Li-Duan Tsai, Yueh-Wei Lin, Chia-Chen Fang, Cheng-Liang Cheng, Jing-Pin Pan, Tsung-Hsiung Wang
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Publication number: 20120171577Abstract: An electrolytic solution including: a magnesium salt; a non-aqueous organic solvent; and an anion receptor, wherein the anion receptor comprises at least one compound selected from the group consisting of compounds represented by Formulae 1 and 2 below: where A, m, p1, P2, P3, q1, RA, Ra, R1 through R6, and Ry are the same as described in the detailed description section.Type: ApplicationFiled: June 10, 2011Publication date: July 5, 2012Applicant: Samsung Electronics Co., Ltd.Inventors: Young-gyoon Ryu, Sang-ho Park, Myung-dong Cho, Young-min Choi, Seok-soo Lee
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Publication number: 20120171576Abstract: A non-aqueous electrolyte including a lithium salt, an organic solvent, and an electrolyte additive is provided. The electrolyte additive is a meta-stable state nitrogen-containing polymer formed by reacting Compound (A) and Compound (B). Compound (A) is a monomer having a reactive terminal functional group. Compound (B) is a heterocyclic amino aromatic derivative as an initiator. A molar ratio of Compound (A) to Compound (B) is from 10:1 to 1:10. A lithium secondary battery containing the non-aqueous electrolyte is further provided. The non-aqueous electrolyte of this disclosure has a higher decomposition voltage than a conventional non-aqueous electrolyte, such that the safety of the battery during overcharge or at high temperature caused by short-circuit current is improved.Type: ApplicationFiled: May 19, 2011Publication date: July 5, 2012Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Li-Duan Tsai, Yueh-Wei Lin, Jason Fang, Cheng-Liang Cheng, Jing-Pin Pan, Tsung-Hsiung Wang
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Patent number: 8211277Abstract: The present invention relates to compounds containing organofluorochlorophosphate anions, the preparation thereof and the use thereof, in particular as ionic liquids.Type: GrantFiled: December 7, 2007Date of Patent: July 3, 2012Assignee: Merck Patent GmbHInventors: Nikolai Ignatyev, German Bissky, Helge Willner
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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: 20120107697Abstract: An electrolyte for a lithium ion battery includes a non-aqueous organic solvent and a lithium salt. The non-aqueous organic solvent includes a flame-retardant solvent and a carbonate-based solvent. The flame-retardant solvent includes an ionic liquid including a fluorinated cation and a phosphorus-based solvent.Type: ApplicationFiled: September 6, 2011Publication date: May 3, 2012Inventors: Sae-Weon Roh, Man-Seok Han, Sung-Soo Kim
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Publication number: 20120088160Abstract: The present technology relates to stabilizing additives and electrolytes containing the same for use in electrochemical devices such as lithium ion batteries and capacitors. The stabilizing additives include triazinane triones and bicyclic compounds comprising succinic anhydride, such as compounds of Formulas I and II described herein.Type: ApplicationFiled: October 7, 2010Publication date: April 12, 2012Inventors: Lu Zhang, Zhengcheng Zhang, Khalil Amine
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Publication number: 20120082903Abstract: An ionic liquid that is a salt has a Formula: Such ionic liquids may be used in electrolytes and in electrochemical cells.Type: ApplicationFiled: September 30, 2010Publication date: April 5, 2012Inventors: Zhengcheng Zhang, Wei Weng, Lu Zhang, Khalil Amine
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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: 8124282Abstract: A nonaqueous electrolyte having maleimide additives and rechargeable cells employing the same are provided. The nonaqueous electrolyte having maleimide additives comprises an alkali metal electrolyte, a nonaqueous solvent, and maleimide additives. Specifically, the maleimide additives comprise maleimide monomer, bismaleimide monomer, bismaleimide oligomer, or mixtures thereof. The maleimide additives comprise functional groups, such as a maleimide double bond, phenyl group carboxyl, or imide, enhancing the charge-discharge efficiency, safety, thermal stability, chemical stability, flame-resistance, and lifespan of the secondary cells of the invention.Type: GrantFiled: December 27, 2007Date of Patent: February 28, 2012Assignee: Industrial Technology Research InstituteInventors: Jing-Pin Pan, Chang-Rung Yang, Tsung-Hsiung Wang, Yueh-Wei Lin, Pin-Chi Chiang, Jung-Mu Hsu
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Patent number: 8124284Abstract: 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: GrantFiled: March 10, 2006Date of Patent: February 28, 2012Assignee: Japan Aerospace Exploration AgencyInventors: Xianming Wang, Yoshitsugu Sone, Saburo Kuwajima, Kenichi Kuwajima
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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: 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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Patent number: 8026339Abstract: A polysulfone is provided with a nitrogen-containing functional group having an affinity to an acid, an electrolyte membrane using the polysulfone, and a fuel cell including the electrolyte membrane. In particular, the polysulfone includes a nitrogen-containing functional group that has an affinity to an acid, such as a phosphoric acid, thereby having an excellent acid retaining ability. In an electrolyte membrane including the polysulfone and an acid, the amount of the retained acid can be controlled. Therefore, the electrolyte membrane has a high ionic conductivity and a high mechanical strength. A polysulfone blend of polysulfone and a thermoplastic resin prevents the dissolution of polysulfone by phosphoric acid, so that an electrolyte membrane using the polysulfone blend has an improved durability. A cross-linked reaction product of polysulfone, a cross-linking agent and a polymerization product of polysulfone, a thermoplastic resin, and a cross-linking agent strongly resist a phosphoric acid.Type: GrantFiled: June 1, 2007Date of Patent: September 27, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Chung-kun Cho, Myung-jin Lee, Myeong-soon Kang
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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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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: 20110117444Abstract: Disclosed is an electrolytic solution including an organic solvent, a lithium salt, and an additive. The additive includes maleimide compound and vinylene carbonate. The maleimide compound can be maleimide, bismaleimide, polymaleimide, polybismaleimide, maleimide-bismaleimide copolymer, or combinations thereof. The lithium battery employing the described electrolytic solution has a higher capacity of confirmation, higher cycle efficiency, and longer operational lifespan.Type: ApplicationFiled: January 28, 2011Publication date: May 19, 2011Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Fu-Ming Wang, Chang-Rung Yang, Jing-Pin Pan, Hung-Chun Wu
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Publication number: 20110117443Abstract: An electrolyte for a lithium battery and a lithium battery including the electrolyte.Type: ApplicationFiled: September 3, 2010Publication date: May 19, 2011Inventors: Yong-Beom Lee, Sun-Young Kim, Bo-Ra Lee, Sin-Young Park
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Publication number: 20110111286Abstract: A nonaqueous electrolytic solution containing magnesium ions which shows excellent electrochemical characteristics and which can be manufactured in a general manufacturing environment such as a dry room, and an electrochemical device using the same are provided. A Mg battery has a positive-electrode can 1, a positive-electrode pellet 2 made of a positive-electrode active material or the like, a positive electrode 11 composed of a metallic net supporting body 3, a negative-electrode cup 4, a negative electrode 12 made of a negative-electrode active material 5, and a separator 6 impregnated with an electrolytic solution 7 and disposed between the positive-electrode pellet and the negative-electrode active material.Type: ApplicationFiled: June 4, 2009Publication date: May 12, 2011Applicant: SONY CORPORATIONInventors: Kenta Yamamoto, Yuri Nakayama, Yui Senda
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Publication number: 20110076572Abstract: A non-aqueous electrolyte includes an ionic electrolyte salt, and a non-aqueous electrolyte solvent that includes a mixture of siloxane or a silane or a mixture thereof, a sulfone, and a fluorinated ether or fluorinated ester or a mixture thereof, an ionic liquid, or a carbonate.Type: ApplicationFiled: September 23, 2010Publication date: March 31, 2011Inventors: Khalil Amine, Zonghai Chen, Zhengcheng Zhang
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Publication number: 20110070504Abstract: This invention relates to a highly safe secondary battery. In the secondary battery of this invention, a positive electrode is formed of an oxide which adsorbs/desorbs lithium ions; a negative electrode is formed of a carbon material which adsorbs/desorbs lithium ions; and an electrolyte solution is formed of an ion liquid and a phosphoric acid ester derivative. Consequently, the secondary battery can be highly safe. Since a phosphate ester and an ion liquid are contained at the same time, high discharge capacity can be maintained even when the phosphate ester is used at a high concentration.Type: ApplicationFiled: May 14, 2009Publication date: March 24, 2011Applicants: NEC CORPORATION, NEC ENERGY DEVICES, LTD.Inventors: Kazuaki Matsumoto, Kentaro Nakahara, Shigeyuki Iwasa, Hitoshi Ishikawa, Shinako Kaneko, Koji Utsugi
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Patent number: 7875393Abstract: An organic electrolytic solution and a lithium battery employing the same are provided. The organic electrolytic solution includes a lithium salt, an organic solvent containing a first solvent having a high dielectric constant and a second solvent having a low boiling point, and a surfactant including a hydrophobic portion having an aromatic group. The organic electrolytic solution effectively prevents the electrolytic solution from contacting the anode, thereby suppressing side reactions on the anode surface and improving discharge capacity, charge/discharge efficiency, lifespan, and battery reliability.Type: GrantFiled: February 17, 2006Date of Patent: January 25, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Young-gyoon Ryu, Jae-young Choi, Eun-sung Lee, Seok-soo Lee, Do-yun Kim, Sang-hoon Song
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Patent number: 7867294Abstract: A process is provided to produce non-aqueous electrolytic solution for use in batteries having low acid content and low water content. The invention involves removing acids and water from non-aqueous electrolytic solutions typically found in lithium or lithium-ion batteries by using nitrogen-containing compounds such as triazines. After treatment by a triazine such as melamine, the concentrations of acids and water in the electrolytic solutions are substantially decreased. The present invention provides a process to prepare extremely pure electrolytic solutions having low (<20 ppm) concentrations of both water and acids.Type: GrantFiled: April 14, 2010Date of Patent: January 11, 2011Assignee: Novolyte Technologies Inc.Inventors: Zhongyi Deng, Jerry L. Decker, Wu Xu, John R. Sans, Pascal Bolomey
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Patent number: 7807301Abstract: Disclosed is a lithium battery including a silicon negative electrode, a lithium mixed metal oxide positive electrode, a separator disposed between the negative and positive electrodes to define a reservoir region, an electrolytic solution filled in the reservoir region, and a sealant structure wrapped around the silicon negative electrode, the lithium mixed metal oxide positive electrode, the separator, and the electrolytic solution. The electrolytic solution includes an organic solvent, a lithium salt, and an additive. The additive includes a maleimide compound and vinylene carbonate. The silicon negative electrode of the lithium battery employing the described electrolytic solution has higher cycle efficiency and longer operating lifespan.Type: GrantFiled: December 24, 2008Date of Patent: October 5, 2010Assignee: Industrial Technology Research InstituteInventors: Hung-Chun Wu, Fu-Ming Wang, Ching-Yi Su, Chang-Rung Yang, Jing-Pin Pan, Yu-Chan Yen, Nae-Lih Wu
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Patent number: 7736812Abstract: Disclosed is an electrolyte for a rechargeable lithium battery including an additive for overcharge inhibition comprising a compound represented by formula 1; a lithium salt; and a non-aqueous organic solvent: where R1, R2 and R3 are the same or independently selected from H, CH3, C2H5, CH?CH2, CH?CHCH3, or a functional group with N, P, or S.Type: GrantFiled: July 1, 2004Date of Patent: June 15, 2010Assignee: Samsung SDI Co., Ltd.Inventors: Won-Chull Han, Takaki Mori, Cheon-Soo Kim, You-Mee Kim
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Patent number: 7727669Abstract: A process is provided to produce non-aqueous electrolytic solution for use in batteries having low acid content and low water content. The invention involves removing acids and water from non-aqueous electrolytic solutions typically found in lithium or lithium-ion batteries by using nitrogen-containing compounds such as triazines. After treatment by a triazine such as melamine, the concentrations of acids and water in the electrolytic solutions are substantially decreased. The present invention provides a process to prepare extremely pure electrolytic solutions having low (<20 ppm) concentrations of both water and acids.Type: GrantFiled: May 26, 2005Date of Patent: June 1, 2010Assignee: Novolyte Technologies Inc.Inventors: Zhongyi Deng, Jerry L. Decker, Wu Xu, John R. Sans, Pascal Bolomey
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Patent number: 7722988Abstract: A lithium electrochemical cell design incorporating a low molality electrolyte including LiI is disclosed. The resulting cell delivers excellent performance under a wide range of temperatures, conditions and drain rates.Type: GrantFiled: July 14, 2008Date of Patent: May 25, 2010Assignee: Eveready Battery Company, Inc.Inventor: Andrew Webber
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Patent number: 7709154Abstract: Disclosed is an electrolyte of a lithium secondary battery comprising a lithium salt, an organic solvent, and at least one additive compound selected from the group consisting of compounds represented by the following formula (1) and derivatives thereof: where R1 is selected from the group consisting of hydrogen radicals, alkyls, aryls, cycloalkyls, alkenyls, alkynyls, ester radicals, and aliphatic carbonate radicals. The electrolyte improves both swelling inhibition properties at high temperature and capacity characteristics of a lithium secondary battery.Type: GrantFiled: February 13, 2009Date of Patent: May 4, 2010Assignee: Samsung SDI Co., Ltd.Inventor: Hyung-Gon Noh
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Patent number: 7709142Abstract: A battery capable of obtaining a high energy density and obtaining superior cycle characteristics is provided. The thickness of a cathode active material layer is from 100 ?m to 130 ?m. The thickness of an anode active material layer is from 85 ?m to 120 ?m, and the volume density of the anode active material layer is from 1.7 g/cm3 to 1.85 g/cm3. An electrolytic solution contains 4-fluoro-1,3-dioxolane-2-one. Thereby, even when the thicknesses of the cathode active material layer and the anode active material layer are increased, the diffusion and acceptance of lithium in an anode are improved, and superior cycle characteristics can be obtained.Type: GrantFiled: December 7, 2006Date of Patent: May 4, 2010Assignee: Sony CorporationInventors: Shinya Wakita, Izaya Okae, Yosuke Ushio, Yoshiaki Takeuchi, Saori Tokuoka
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Patent number: 7615312Abstract: A rechargeable lithium-ion cell contains a positive electrode, negative electrode, charge-carrying electrolyte containing charge carrying medium and lithium salt, and an N-substituted or C-substituted phenothiazine compound dissolved in or dissolvable in the electrolyte. The substituted phenothiazine compound has an oxidation potential above the positive electrode recharged potential and serves as a cyclable redox chemical shuttle providing cell overcharge protection.Type: GrantFiled: May 17, 2005Date of Patent: November 10, 2009Assignee: 3M Innovative Properties CompanyInventors: Jeffrey R. Dahn, Claudia Buhrmester, Richard L. Wang, William M. Lamanna
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Patent number: 7615317Abstract: A rechargeable lithium-ion cell contains a positive electrode, negative electrode, charge-carrying electrolyte containing charge carrying medium and lithium salt, and cycloaliphatic N-oxide compound dissolved in or dissolvable in the electrolyte. The N-oxide compound has an oxidation potential above the positive electrode recharged potential and serves as a cyclable redox chemical shuttle providing cell overcharge protection.Type: GrantFiled: May 17, 2005Date of Patent: November 10, 2009Assignee: 3M Innovative Properties CompanyInventors: Jeffrey R. Dahn, Claudia Buhrmester
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Publication number: 20090226819Abstract: A secondary battery is provided and includes a cathode, an anode and an electrolytic solution, in which the anode includes an anode active material layer including a plurality of anode active material particles, the plurality of anode active material particles including silicon as a constituent element. The anode active material layer includes at least one of an oxide-containing film and a metal material as a constituent element. The oxide-containing film with which surfaces of the anode active material particles are covered. The metal material includes a metal element which is not alloyed with an electrode reactant, and being arranged in a gap in the anode active material layer. The electrolytic solution includes a solvent including at least one kind selected from the group consisting of specific isocyanate compounds.Type: ApplicationFiled: March 10, 2009Publication date: September 10, 2009Applicant: SONY CORPORATIONInventors: Masayuki Ihara, Hiroyuki Yamaguchi, Tadahiko Kubota
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Patent number: 7585590Abstract: Provided is a rechargeable lithium-ion cell that contains a positive electrode, a negative electrode, a charge-carrying electrolyte containing a charge carrying medium and a lithium salt, and a triphenylamine compound dissolved in or dissolvable in the electrolyte. The triphenylamine compound has an oxidation potential above the positive electrode recharged potential and serves as a cyclable redox chemical shuttle providing cell overcharge protection. Also provided are methods for manufacturing a rechargeable lithium-ion cell.Type: GrantFiled: February 5, 2007Date of Patent: September 8, 2009Assignee: 3M Innovative Properties CompanyInventors: Richard L. Wang, Claudia Buhrmester, William M. Lamanna, Jeffrey R. Dahn, Lee Moshurchak
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Patent number: 7579116Abstract: A fuel cell having a polymer electrolyte membrane containing fluorine atoms distributed along the polymer chains, and metal conductors and/or catalysts, is protected from fluoride ion degradation of the metal components by a fluoride ion sequestering agent fixed in the cell or flowing through the cell. In a preferred embodiment, the fluoride ion scavenger comprises a suitable number of azacrown moieties attached to polymer constituents in the electrolyte membrane or in electrodes.Type: GrantFiled: April 1, 2005Date of Patent: August 25, 2009Assignee: GM Global Technology Operations, Inc.Inventors: Andrew M. Mance, Belabbes Merzougui, Ion C. Halalay
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Patent number: 7553588Abstract: An electrolyte for a lithium secondary battery includes lithium salts, a non-aqueous organic solvent, and additive compounds. The additive compounds added to the electrolyte of the present invention decompose earlier than the organic solvent to form a conductive polymer layer on the surface of a positive electrode, and prevent decomposition of the organic solvent. Accordingly, the electrolyte inhibits gas generation caused by decomposition of the organic solvent at initial charging, and thus reduces an increase of internal pressure and swelling during high temperature storage, and also improves safety of the battery during overcharge.Type: GrantFiled: September 10, 2003Date of Patent: June 30, 2009Assignees: Samsung SDI Co., Ltd., Cheil Industries Inc.Inventors: Jin-Hee Kim, Jin-Sung Kim, Sang-Moon Hwang, Meen-Seon Paik, Hak-Soo Kim
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Patent number: 7524587Abstract: An aluminum secondary battery exhibiting favorable characteristics is provided. The present invention relates to a non-aqueous electrolyte comprising an electrolyte containing Al(CF3SO3)3 and a room temperature molten salt of a quaternary ammonium salt where CF3SO3? is anion, and to an aluminum secondary battery containing that non-aqueous electrolyte.Type: GrantFiled: May 11, 2007Date of Patent: April 28, 2009Assignee: Panasonic CorporationInventor: Atsushi Omote