Oxygen Is Ring Member Of The Hetero Ring Patents (Class 429/329)
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Patent number: 7718322Abstract: Disclosed in an electrolyte for a rechargeable lithium battery, including a mixture of organic solvents including a cyclic solvent and a nitrile-based solvent represented by formula 1 and a lithium salt.Type: GrantFiled: August 20, 2004Date of Patent: May 18, 2010Assignee: Samsung SDI Co., Ltd.Inventors: Yong-Beom Lee, Eui-Hwan Song, Kwang-Sup Kim, Tae-Shik Earmme, You-Mee Kim
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Patent number: 7691537Abstract: An electrolyte for a lithium secondary battery and a lithium secondary battery having the electrolyte, the electrolyte including a lithium salt; a non-aqueous organic solvent including ?-butyrolactone; and succinic anhydride.Type: GrantFiled: July 7, 2006Date of Patent: April 6, 2010Assignee: Samsung SDI Co., Ltd.Inventor: Cheonsoo Kim
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Patent number: 7682754Abstract: The invention relates to the use of an amine oxide as an additive in a nonaqueous electrolytic solution. The electrolytic solution is suitable for use in electrochemical cells such as lithium batteries and lithium ion batteries. Batteries using this electrolyte solution have long life and high capacity retention.Type: GrantFiled: May 26, 2005Date of Patent: March 23, 2010Assignee: Novolyte Technologies, Inc.Inventors: Wu Xu, Zhongyi Deng, Vaikunth S. Prabhu, Pascal Bolomey
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Publication number: 20100055574Abstract: A primary cell having an anode comprising lithium and a cathode comprising a metal doped iron sulfide and carbon particles. A cathode slurry is prepared comprising the metal doped iron sulfide powder, carbon, binder, and a liquid solvent. The mixture is coated onto a conductive substrate and solvent evaporated leaving a dry cathode coating on the substrate. The anode and cathode can be spirally wound with separator therebetween and inserted into the cell casing with electrolyte then added.Type: ApplicationFiled: August 27, 2008Publication date: March 4, 2010Inventors: Zhiping Jiang, Rimma Sirontina, Nikolay Iltchev
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Patent number: 7662519Abstract: The present invention provides a non-aqueous electrolyte secondary battery having excellent properties such as energy density and electromotive force and being excellent in cycle life, storage property and safety. In the present invention, the non-aqueous electrolyte secondary battery comprises a substance having a peak from 162.9 to 164.0 eV by XPS analysis on the anode surface.Type: GrantFiled: August 11, 2004Date of Patent: February 16, 2010Assignee: NEC CorporationInventors: Yuki Kusachi, Koji Utsugi
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Patent number: 7659037Abstract: Using a positive electrode active material including spinel type manganese oxide as the main constituent, a novel low cost and high output power flat type nonaqueous secondary cell for HEVs that has increased safety at overcharge, and superior storage properties and cycle life is provided. A flat type nonaqueous secondary cell that has increased safety and is superior in storage and cycle properties even though the cell is a laminate type cell which does not have a blocking mechanism can be obtained by blending the spinel type lithium manganese oxide of the positive electrode and 5 wt % to 40 wt % of layered type lithium manganese oxide, to suppress storage deterioration at a high temperature and to simultaneously achieve safety when overcharged, and further, by adding a Li compound having a structure as shown in Formula (1) structure, to suppress deterioration of a mixed positive electrode active material during a high temperature cycle.Type: GrantFiled: December 13, 2006Date of Patent: February 9, 2010Assignees: Hitachi, Ltd., Hitachi Vehicle Energy, Ltd.Inventors: Hiroshi Fukunaga, Youshin Yagi, Shuichi Wada, Kenji Hara, Kazushige Kohno, Hiroshi Haruna
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Patent number: 7629081Abstract: A nonaqueous electrolyte secondary battery includes a case, a nonaqueous electrolyte provided in the case and containing a linear sulfite, a positive electrode provided in the case and capable of absorbing-releasing Li element or Li ions, and a negative electrode provided in the case and containing a lithium titanium oxide and a conductive agent that includes a carbonaceous material.Type: GrantFiled: March 24, 2005Date of Patent: December 8, 2009Assignee: Kabushiki Kaisha ToshibaInventors: Hiroki Inagaki, Yoshinao Tatebayashi, Norio Takami
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Patent number: 7608364Abstract: This invention provides a lithium ion secondary battery comprising a cathode, an anode and an nonaqueous electrolytic solution in which an electrolyte is dissolved in a nonaqueous solvent, wherein the anode comprises a non-graphitizable carbon as an anode activator; and the nonaqueous electrolytic solution comprises at least one anode protecting component selected from the group consisting of sultones having a 5- to 7-membered cyclic sulfonate structure and their substituted derivatives as well as vinylene carbonates and their substituted derivatives.Type: GrantFiled: December 22, 2003Date of Patent: October 27, 2009Assignee: NEC CorporationInventors: Junko Nishiyama, Tamaki Miura, Koji Utsugi
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Publication number: 20090263727Abstract: A primary cell having an anode comprising lithium or lithium alloy and a cathode comprising iron disulfide (FeS2), iron sulfide (FeS) and carbon particles. The electrolyte comprises a lithium salt dissolved in a solvent mixture. A cathode slurry is prepared comprising iron disulfide (FeS2) powder, iron sulfide (FeS) powder, carbon, binder, and a liquid solvent. The mixture is coated onto a conductive substrate and solvent evaporated leaving a dry cathode coating on the substrate. The anode and cathode can be spirally wound with separator therebetween and inserted into the cell casing with electrolyte then added.Type: ApplicationFiled: April 16, 2008Publication date: October 22, 2009Inventors: Barry D. Josephs, Michael Pozin, Zhiping Jiang, Maya Stevanovic, Fred J. Berkowitz, Yelena Kouznetsova, Steven J. Specht
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Patent number: 7592101Abstract: A non-aqueous electrolyte primary battery including: a positive electrode including a fluorinated carbon; a negative electrode including a lithium metal; a non-aqueous electrolyte; and a separator, wherein the non-aqueous electrolyte includes a non-aqueous solvent and a solute dissolved therein, the non-aqueous solvent including ?-butyrolactone, and the separator includes a microporous membrane onto which a phosphoric acid ester is provided, the phosphoric acid ester being represented by the formula (1): where R1 is an alkyl group, R2 and R3 are each independently an alkylene group, and n is an integer.Type: GrantFiled: March 17, 2006Date of Patent: September 22, 2009Assignee: Panasonic CorporationInventors: Shinichi Kawaguchi, Yukihiro Gotanda, Shinichiro Tahara
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Patent number: 7592102Abstract: An electrolyte for a lithium ion secondary battery includes a non-aqueous organic solvent; lithium salt; and difluoro oxalato borate and fluoro ethylene carbonate (FEC). The capacity retention property and durability of a lithium ion secondary battery including the electrolyte is excellent even when the battery is left at a high temperature.Type: GrantFiled: October 23, 2008Date of Patent: September 22, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Jinsung Kim, Narae Park, Jinhyunk Lim, Suhee Han, Jinburn Kim, Jungkang Oh
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Patent number: 7582388Abstract: A non-aqueous solvent secondary battery with a high initial charge/discharge capacity and excellent charge/discharge characteristics at high temperature, having a positive electrode containing a positive electrode active material capable of reversibly occluding and releasing lithium, a negative electrode containing a negative electrode active material capable of reversibly occluding and releasing lithium and a non-aqueous solvent electrolyte containing (1) acrylic acid anhydride, and (2) an aromatic compound having at least one electron donating group, wherein the electron donating group comprises at least one member selected from any of the alkyl group, alkoxy group, alkylamino group and amine, provided that each of the alkyl group, alkoxy group and alkylamino group includes a halogen substituted group and a cycloaliphatic group.Type: GrantFiled: September 9, 2004Date of Patent: September 1, 2009Assignee: Sanyo Electric Co., Ltd.Inventor: Kentaro Takahashi
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Patent number: 7579118Abstract: An organic electrolytic solution includes a lithium salt; an organic solvent including a high dielectric constant solvent and a low boiling point solvent; and an additive of a hetero ring compound including a cyano group and an alkenyl group as substituents. The organic electrolytic solution and the lithium battery employing the organic electrolytic solution suppress the reduction decomposition of a polar solvent to improve the capacity retention ratio of the battery. Thus, the charge/discharge efficiency and lifespan of the battery can be improved.Type: GrantFiled: June 21, 2006Date of Patent: August 25, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Seok-soo Lee, Han-su Kim, Young-gyoon Ryu, Boris Trofimov, Galing Myachina
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Patent number: 7575833Abstract: The invention relates to a nonaqueous electrolyte which comprises a nonaqueous organic solvent and a lithium salt dissolved therein, wherein the nonaqueous organic solvent contains at least one compound selected from the group consisting of acid anhydrides and carbonic esters having an unsaturated bond, and at least one compound selected from the group consisting of sulfonic compounds and fluorine-containing aromatic compounds having 9 carbon atoms or less; and a lithium secondary battery employing the same.Type: GrantFiled: April 13, 2007Date of Patent: August 18, 2009Assignee: Mitsubishi Chemical CorporationInventors: Minoru Kotato, Isao Konno, Shinichi Kinoshita
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Patent number: 7572554Abstract: An electrolyte for a battery comprises a lithium organoborate salt in a lactone and a low viscosity solvent. The lithium organoborate salt may comprise LiBOB, or a mono[bidentate]borate salt. The lactone may comprise gamma butyrolactone. The low viscosity solvent may comprise a nitrile, an ether, a linear carbonate, or a linear ester. The electrolyte is suitable for use in lithium ion batteries having graphite negative electrodes. Batteries using this electrolyte have high conductivity, low polarization, and high discharge capacity.Type: GrantFiled: March 3, 2005Date of Patent: August 11, 2009Assignee: Quallion LLCInventors: Tsuneaki Koike, Hiroyuki Yumoto, Hisashi Tsukamoto
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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: 7553590Abstract: Disclosed is an additive for an electrochemical cell wherein the additive includes an N—O bond. The additive is most preferably included in a nonaqueous electrolyte of the cell. Also disclosed are cells and batteries including the additive, and methods of charging the batteries and cells. An electrochemical cell including the additive preferably has an anode that includes lithium and a cathode including an electroactive sulfur-containing material.Type: GrantFiled: April 7, 2008Date of Patent: June 30, 2009Assignee: Sion Power CorporationInventor: Yuriy V. Mikhaylik
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Publication number: 20090142670Abstract: 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: February 25, 2008Publication date: June 4, 2009Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Fu-Ming Wang, Chang-Rung Yang, Jing-Pin Pan, Hung-Chun Wu
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Publication number: 20090130566Abstract: A non-aqueous electrolyte secondary battery has a high initial capacity and excels in cycle characteristics and storage characteristics even when charged until the potential of the positive electrode active material exceeds as high as 4.3V versus lithium. The non-aqueous electrolyte of the secondary battery contains both 1,3-dioxane and a sulfonic acid ester compound.Type: ApplicationFiled: November 14, 2008Publication date: May 21, 2009Applicants: SANYO ELECTRIC CO., LTD., UBE INDUSTRIES, LTD.Inventors: Masato IWANAGA, Noriko YAMASHITA, Koji ABE, Kazuhiro MIYOSHI
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Patent number: 7524588Abstract: A nonaqueous secondary battery includes a negative electrode using a negative electrode active material containing a carbonaceous material; a positive electrode using a positive electrode active material capable of reversibly intercalating and deintercalating lithium; and a nonaqueous electrolyte. The nonaqueous electrolyte contains: (1) a vinyl ethylene carbonate derivative represented by Formula (I): wherein R1 to R6 independently represent a hydrogen atom or an alkyl group having a carbon number of 1 to 4; (2) a cyclic acid anhydride; and (3) at least one cyclic ether derivative selected from the group consisting of 1,3-dioxanes, 1,3-dioxolanes and derivatives thereof.Type: GrantFiled: April 17, 2007Date of Patent: April 28, 2009Assignee: Sanyo Electric C.o., Ltd.Inventor: Kentaro Takahashi
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Patent number: 7524579Abstract: A method for enhancing the performance characteristics of a battery through the use of the electrolyte composition comprised of a non-aqueous solvent, and a salt mixture. The salt mixture includes an alkali metal electrolyte salt and an additive salt having an anion of a mixed anhydride of oxalic acid and boric acid. Specific additive salts include lithium bis(oxalato) borate and lithium oxalyldifluoroborate. Particular electrolyte salts comprise LiPF6 and LiBF4. The additive salt is present in an amount of 0.1-60 mole percent of the total of the additive salt and electrolyte salt content of the electrolyte.Type: GrantFiled: December 21, 2006Date of Patent: April 28, 2009Assignee: The United States of America as represented by the Secretary of the ArmyInventors: T. Richard Jow, Shengshui Zhang, Kang Xu
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Patent number: 7514182Abstract: An organic electrolytic solution and a rechargeable lithium battery comprising the same is provided. The organic electrolytic solution contains a lithium salt and an organic solvent mixture. The organic solvent mixture is comprised of a solvent with high permittivity, a solvent with a low boiling point, and a cyclic organic compound having at least an oxy-carbonyl group and having a ring structure of 6 units or more. The organic electrolytic solution helps to increase reduction decomposition stability in the lithium battery using the same. As a result, the irreversible capacity of the lithium battery at a first cycle decreases and charge/discharge efficiency and lifespan of the lithium battery increases. In addition, the battery thickness is maintained within a specific range at room temperature after formation and standard charging, which improves the reliability of the lithium battery.Type: GrantFiled: February 3, 2005Date of Patent: April 7, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Han-Su Kim, Jin-Sung Kim, Myung-Dong Cho, Hyo-Sug Lee, Dong-Min Im
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Patent number: 7507503Abstract: The present invention relates to non-aqueous electrolytes having electrode stabilizing additives, stabilized electrodes, and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, and an electrode stabilizing additive. In some embodiments the additives include a substituted or unsubstituted cyclic or spirocyclic hydrocarbon containing at least one oxygen atom and at least one alkenyl or alkynyl group. When used in electrochemical devices with, e.g., lithium manganese oxide spinel electrodes or olivine or carbon-coated olivine electrodes, the new electrolytes provide batteries with improved calendar and cycle life.Type: GrantFiled: December 8, 2005Date of Patent: March 24, 2009Assignee: U Chicago Argonne LLCInventors: Khalil Amine, Jun Liu, Donald R. Vissers, Wenquan Lu
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Patent number: 7504181Abstract: Disclosed is a nonaqueous liquid electrolyte comprising a nonaqueous solvent, an electrolyte dissolved in the nonaqueous solvent and a macromolecular material added to the nonaqueous solvent. The nonaqueous liquid electrolyte is a fluid having a viscosity at 20° C. of 7 cP to 30,000 cP. The nonaqueous liquid electrolyte suppresses leakage, ensures high discharge characteristics, reduces the unevenness of liquid electrolyte, and lessens the change of electrodes and the change in battery resistivity.Type: GrantFiled: May 15, 2007Date of Patent: March 17, 2009Assignee: Kabushiki Kaisha ToshibaInventors: Tatsuoki Kohno, Norio Takami
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Publication number: 20090053612Abstract: A battery capable of improving battery characteristics is provided. The battery includes a cathode, an anode and an electrolytic solution, and a separator arranged between the cathode and the anode is impregnated with the electrolytic solution. The solvent of the electrolytic solution includes a sulfone compound having a sulfonyl fluoride type structure in which a sulfonyl group and a fluorine group are bonded together, and at least one kind selected from the group consisting of a chain carbonate which includes a halogen and a cyclic carbonate which includes a halogen.Type: ApplicationFiled: July 31, 2008Publication date: February 26, 2009Applicant: SONY CORPORATIONInventors: Masayuki Ihara, Hiroyuki Yamaguchi, Tadahiko Kubota
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Patent number: 7491471Abstract: An electrolyte for a lithium secondary battery which has a non-aqueous organic solvent including a ?-butyrolactone and optionally a cyclic carbonate, an ester compound having an electron withdrawing group, and at least two salts. The lithium secondary battery including the electrolyte has good safety and good storage characteristics at high temperature.Type: GrantFiled: July 15, 2004Date of Patent: February 17, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Takitaro Yamaguchi, Ryuichi Shimizu, Hyun-Jei Chung, Cheol-Soo Jung, Hyeong-Gon Noh, Eui-Hwan Song, Joong-Hun Kim
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Patent number: 7438991Abstract: The invention provides a non-aqueous electrolyte secondary cell that has high capacity and excels in cycle characteristics. The non-aqueous electrolyte secondary cell functions stably at a high potential of from 4.4 to 4.6 V with respect to lithium and inhibits the decomposition of the electrolytic solution at high potential. This is accomplished as follows. The non-aqueous electrolyte secondary cell has a positive electrode having a positive electrode active material; a negative electrode having a negative electrode active material; and a non-aqueous electrolyte having a non-aqueous solvent and electrolytic salt. The positive electrode active material has: lithium cobalt compound oxide having added therein at least zirconium and magnesium; and lithium-nickel-manganese compound oxide having a layered structure. The positive electrode active material has a potential of from 4.4 to 4.6 V with respect to lithium. The non-aqueous solvent contains diethyl carbonate of 10 vol. % or higher at 25° C.Type: GrantFiled: November 29, 2005Date of Patent: October 21, 2008Assignee: Sanyo Electric Co., Ltd.Inventors: Nobumichi Nishida, Hidetoshi Inoue
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Publication number: 20080193835Abstract: Disclosed is an additive for an electrochemical cell wherein the additive includes an N—O bond. The additive is most preferably included in a nonaqueous electrolyte of the cell. Also disclosed are cells and batteries including the additive, and methods of charging the batteries and cells. An electrochemical cell including the additive preferably has an anode that includes lithium and a cathode including an electroactive sulfur-containing material.Type: ApplicationFiled: April 18, 2008Publication date: August 14, 2008Inventor: Yuriy V. Mikhaylik
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Publication number: 20080193854Abstract: An electrolytic solution capable of improving battery characteristics even at high temperature, and a battery using the electrolytic solution are provided. A separator is impregnated with an electrolytic solution. The electrolyic solution includes a cyclic imide salt such as 1,1,2,2,3,3-hexafluoropropane-1,3-disulfonimide lithium and a light metal salt such as difluoro[oxalato-O,O?] lithium borate or bis[oxalato-O,O?] lithium borate. Thereby, the decomposition reaction of the electrolytic solution can be prevented even at high temperature, and the battery characteristics can be improved.Type: ApplicationFiled: March 12, 2007Publication date: August 14, 2008Inventors: Akira Yamaguchi, Atsumichi Kawashima, Masayuki Ihara, Hiroshi Horiuchi, Hiroyuki Yamaguchi, Tadahiko Kubota, Kumiko Takagi
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Publication number: 20080187840Abstract: Disclosed is an additive for an electrochemical cell wherein the additive includes an N—O bond. The additive is most preferably included in a nonaqueous electrolyte of the cell. Also disclosed are cells and batteries including the additive, and methods of charging the batteries and cells. An electrochemical cell including the additive preferably has an anode that includes lithium and a cathode including an electroactive sulfur-containing material.Type: ApplicationFiled: April 7, 2008Publication date: August 7, 2008Inventor: Yuriy V. Mikhaylik
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Patent number: 7402260Abstract: A non-aqueous mixture solvent for a non-aqueous electrolytic solution to be used for electrochemical energy devices, which contains an aprotic solvent, and a fluorinated ketone of the formula: (wherein Rf1 and Rf2 each independently represents a fluorinated aliphatic group, or Rf1 and Rf2 together form a cyclic group, Q represents a fluorinated or non-fluorinated alkylene group or a bond, and n represents 0 or 1), and an electrolytic solution containing the mixture solvent.Type: GrantFiled: March 22, 2005Date of Patent: July 22, 2008Assignee: 3M Innovative Properties CompanyInventors: Haruki Segawa, Hideto Yanome
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Patent number: 7399554Abstract: A hybrid rechargeable lithium battery, which includes a plurality of high power rechargeable cells, having nano-particles therein, and high energy density rechargeable cells, with the high energy cells recharging the high power cells. The battery preferably includes a low volt parallel charger to simultaneously and individually charge both the high power and high energy cells, through a protective device. All cells are then discharged in series at high voltage, and are individually protected from over discharge. A rechargeable battery having both high power and high energy density cells is thus provided.Type: GrantFiled: March 17, 2005Date of Patent: July 15, 2008Inventor: Joseph B. Kejha
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Publication number: 20080166637Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The negative electrode contains a titanium-containing oxide. The nonaqueous electrolyte contains a compound having a functional group represented by the formula (1) below and a sultone having an unsaturated hydrocarbon group. [Chem.Type: ApplicationFiled: December 27, 2007Publication date: July 10, 2008Inventors: Hiroki INAGAKI, Yumi Fujita, Norio Takami
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Publication number: 20080153006Abstract: A non-aqueous electrolyte for a lithium battery includes a non-aqueous organic solvent, the organic solvent including one or more of a carbonate-based solvent, an ester-based solvent, an ether-based solvent, and/or a ketone-based solvent, a lithium salt, and a hexafluoroacetylacetone in an amount of about 0.02 parts by weight to about 10 parts by weight, based on 100 parts by weight of the non-aqueous organic solvent.Type: ApplicationFiled: December 17, 2007Publication date: June 26, 2008Inventors: Jung Kang Oh, Young Jai Cho, Ho Seok Yang, Kab Youl Lee
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Patent number: 7384708Abstract: A non-aqueous electrolyte battery of the present invention includes a non-aqueous electrolyte containing a lithium salt, a cyclic sultone derivative, and an acid anhydride, wherein the non-aqueous electrolyte contains the cyclic sultone derivative in an amount of 0.3 to 3% by mass and the non-aqueous electrolyte contains the acid anhydride in an amount of 0.3 to 3% by mass. Furthermore, the non-aqueous electrolyte battery includes at least one selected from a cyclic sultone derivative and an acid anhydride, and an electrolyte salt. The electrolyte salt contains lithium salt A and lithium salt B. The lithium salt A is at least one selected from LiBF4, LiPF6, LiAsF6, and LiSbF6, and the lithium salt B is a lithium salt other than the lithium salt A. The electrolyte contains the lithium salt A in an amount of 2 mol % or more.Type: GrantFiled: January 13, 2006Date of Patent: June 10, 2008Assignee: Hitachi Maxell, Ltd.Inventors: Tetsuo Kawai, Atsushi Yamano, Noriyuki Yabushita, Tadashi Sakata, Hideki Nishihama
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Patent number: 7378190Abstract: Storage performance in a charged state is improved with a non-aqueous electrolyte secondary battery using gamma-butyrolactone as a solvent. A non-aqueous electrolyte secondary battery includes a positive electrode (2) containing a positive electrode active material including a lithium-containing transition metal oxide; a negative electrode (1) containing a negative electrode active material capable of intercalating and deintercalating lithium; and a non-aqueous electrolyte including a solute and a solvent; wherein the solvent contains 50 volume % or more of gamma-butyrolactone with respect to the total volume of the solvent, and the positive electrode active material contains a phosphate salt M1PO4, where M1 is a metal element capable of having a valency of 3.Type: GrantFiled: March 17, 2005Date of Patent: May 27, 2008Assignee: Sanyo Electric Co., Ltd.Inventors: Atsushi Yanai, Yoshinori Kida, Toshiyuki Nohma
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Patent number: 7358012Abstract: Disclosed is an electrochemical cell comprising a lithium anode and a sulfur-containing cathode and a non-aqueous electrolyte. The cell exhibits high utilization of the electroactive sulfur-containing material of the cathode and a high charge-discharge efficiency.Type: GrantFiled: January 6, 2004Date of Patent: April 15, 2008Assignee: Sion Power CorporationInventor: Yuriy V. Mikhaylik
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Patent number: 7354680Abstract: Disclosed is an additive for an electrochemical cell wherein the additive includes an N—O bond. The additive is most preferably included in a nonaqueous electrolyte of the cell. Also disclosed are cells and batteries including the additive, and methods of charging the batteries and cells. An electrochemical cell including the additive preferably has an anode that includes lithium and a cathode including an electroactive sulfur-containing material.Type: GrantFiled: January 6, 2004Date of Patent: April 8, 2008Assignee: Sion Power CorporationInventor: Yuriy V. Mikhaylik
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Publication number: 20080026290Abstract: A battery includes an anode including an alkali metal as the active material, a cathode having, for example, iron disulfide as the active material, and an electrolyte including an organic solvent and an aluminum salt selected from the group consisting of aluminum iodide and aluminum tri(sec-butoxide).Type: ApplicationFiled: July 27, 2006Publication date: January 31, 2008Inventors: Zhiping Jiang, William L. Bowden, Leslie J. Pinnell, Michael Pozin, Nikolai N. Issaev
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Publication number: 20080026296Abstract: A battery includes an anode having a lithium alloy as the active material, a cathode having, for example, iron disulfide as the active material, and an electrolyte containing a sulfolane and 1,2-dimethoxyethane.Type: ApplicationFiled: July 27, 2006Publication date: January 31, 2008Inventors: William L. Bowden, Todd E. Bofinger, David Leigh DeMuth, Rimma A. Sirotina
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Patent number: 7316868Abstract: Disclosed is an electrolyte for an electrochemical cell wherein the electrolyte includes a solvent mixture comprising a dioxolane and one or more of 1,2-dialkoxyalkanes of 5 or 6 carbon atoms and/or 1,3-dialkoxyalkanes of 5 or 6 carbon atoms. Also disclosed are cells and batteries including the electrolyte. An electrochemical cell including the electrolyte preferably has an anode that includes lithium and a cathode including an electroactive sulfur-containing material.Type: GrantFiled: February 11, 2004Date of Patent: January 8, 2008Assignee: Sion Power CorporationInventor: Alexander Gorkovenko
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Patent number: 7312001Abstract: A non-aqueous electrolytic solution and a lithium battery employing the same are provided. The non-aqueous electrolyte solution that contains a substituted or unsubstituted acetate can effectively stabilize lithium metal and improve the conductivity of lithium ions.Type: GrantFiled: September 25, 2003Date of Patent: December 25, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Ju-yup Kim, Myung-dong Cho, Young-gyoon Ryu
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Publication number: 20070281217Abstract: An electrolyte and battery using same is provided. The electrolyte comprising at least one of a compound represented by Formula 1, wherein, R1, P2, R3, and R4 represent a hydrogen group, or a methyl group and an ethyl group; X, Y, and Z represent sulfur (S) or oxygen (O) or Formula 2, wherein, R1 and R2 represent a hydrogen group, a halogen group, or a methyl group and an ethyl group, or groups in which a part of hydrogen thereof is substituted by a halogen group; X, Y, and Z represent sulfur (S) or oxygen (O), which can retain chemical stability at high temperatures. Use of the electrolyte allows a battery to have excellent characteristics in a hot environment.Type: ApplicationFiled: June 4, 2007Publication date: December 6, 2007Applicant: SONY CORPORATIONInventors: Masayuki IHARA, Hiroyuki YAMAGUCHI, Tadahiko KUBOTA
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Publication number: 20070275306Abstract: Organic electrolytic solutions and lithium batteries using the organic electrolytic solutions are provided. One organic electrolytic solution includes a lithium salt, a mixed organic solvent consisting of a high-dielectric constant solvent and a low-boiling point solvent, and a compound represented by Formula 1 or 2 as an additive. The organic electrolytic solution and the lithium battery using the organic electrolytic solution may inhibit the reductive cleavage reaction of a polar solvent, thereby increasing capacity retention of the battery, and improving charge-discharge efficiency and battery lifetime.Type: ApplicationFiled: January 12, 2007Publication date: November 29, 2007Inventors: Seok-soo Lee, Young-gyoon Ryu, Han-su Kim
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Patent number: 7297447Abstract: A non-aqueous electrolyte battery of the present invention includes a non-aqueous electrolyte containing a lithium salt, a cyclic sultone derivative, and an acid anhydride, wherein the non-aqueous electrolyte contains the cyclic sultone derivative in an amount of 0.3 to 3% by mass and the non-aqueous electrolyte contains the acid anhydride in an amount of 0.3 to 3% by mass. Furthermore, the non-aqueous electrolyte battery includes at least one selected from a cyclic sultone derivative and an acid anhydride, and an electrolyte salt. The electrolyte salt contains lithium salt A and lithium salt B. The lithium salt A is at least one selected from LiBF4, LiPF6, LiAsF6, and LiSbF6, and the lithium salt B is a lithium salt other than the lithium salt A. The electrolyte contains the lithium salt A in an amount of 2 mol % or more.Type: GrantFiled: December 10, 2002Date of Patent: November 20, 2007Assignee: Hitachi Maxell, Ltd.Inventors: Tetsuo Kawai, Atsushi Yamano, Noriyuki Yabushita, Tadashi Sakata, Hideki Nishihama
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Patent number: 7294436Abstract: In order to manufacture a lithium secondary battery having excellent performances in safety under overcharge condition, cycle property, electric capacity, and storage endurance, 0.1 wt. % to 10 wt. % of a tert-alkylbenzene compound is favorably incorporated into a non-aqueous electrolytic solution comprising a non-aqueous solvent and an electrolyte, preferably in combination with 0.1 wt. % to 1.5 wt. % of a biphenyl compound.Type: GrantFiled: January 24, 2002Date of Patent: November 13, 2007Assignee: Ube Industries, Ltd.Inventors: Koji Abe, Yasuo Matsumori
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Patent number: 7285362Abstract: An ion transporting solvent maintains very low vapor pressure, contains flame retarding elements, and is nontoxic. The solvent in combination with common battery electrolyte salts can be used to replace the current carbonate electrolyte solution, creating a safer battery. It can also be used in combination with polymer gels or solid polymer electrolytes to produce polymer batteries with enhanced conductivity characteristics. The solvents may comprise a class of cyclic and acyclic low molecular weight phosphazenes compounds, comprising repeating phosphorus and nitrogen units forming a core backbone and ion-carrying pendent groups bound to the phosphorus. In preferred embodiments, the cyclic phosphazene comprises at least 3 phosphorus and nitrogen units, and the pendent groups are polyethers, polythioethers, polyether/polythioethers or any combination thereof, and/or other groups preferably comprising other atoms from Group 6B of the periodic table of elements.Type: GrantFiled: May 17, 2004Date of Patent: October 23, 2007Assignee: Battelle Energy Alliance, LLCInventors: Mason K. Harrup, Joseph R. Delmastro, Frederick F. Stewart, Thomas A. Luther
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Patent number: 7285361Abstract: A non-aqueous secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte solution where the non-aqueous electrolyte solution contains a compound A in which a halogen group is bonded to a benzene ring and a compound B oxidized at a potential lower than that of the compound A, and the compound B is at least one selected from an aromatic compound and a heterocyclic compound. Thus, a non-aqueous secondary battery having excellent overcharging safety and being capable of ensuring storage reliability with less generation of gas during storage at a high temperature can be provided.Type: GrantFiled: April 6, 2006Date of Patent: October 23, 2007Assignee: Hitachi Maxell, Ltd.Inventors: Fusaji Kita, Hideo Sakata, Haruki Kamizori
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Publication number: 20070243471Abstract: A nonaqueous secondary battery includes a negative electrode using a negative electrode active material containing a carbonaceous material; a positive electrode using a positive electrode active material capable of reversibly intercalating and deintercalating lithium; and a nonaqueous electrolyte. The nonaqueous electrolyte contains: (1) a vinyl ethylene carbonate derivative represented by Formula (I): wherein R1 to R6 independently represent a hydrogen atom or an alkyl group having a carbon number of 1 to 4; (2) a cyclic acid anhydride; and (3) at least one cyclic ether derivative selected from the group consisting of 1,3-dioxanes, 1,3-dioxolanes and derivatives thereof.Type: ApplicationFiled: April 17, 2007Publication date: October 18, 2007Applicant: SANYO ELECTRIC CO., LTD.Inventor: Kentaro Takahashi
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Patent number: 7282304Abstract: A non-aqueous electrolyte battery of the present invention includes a non-aqueous electrolyte containing a lithium salt, a cyclic sultone derivative, and an acid anhydride, wherein the non-aqueous electrolyte contains the cyclic sultone derivative in an amount of 0.3 to 3% by mass and the non-aqueous electrolyte contains the acid anhydride in an amount of 0.3 to 3% by mass. Furthermore, the non-aqueous electrolyte battery includes at least one selected from a cyclic sultone derivative and an acid anhydride, and an electrolyte salt. The electrolyte salt contains lithium salt A and lithium salt B. The lithium salt A is at least one selected from LiBF4, LiPF6, LiAsF6, and LiSbF6, and the lithium salt B is a lithium salt other than the lithium salt A. The electrolyte contains the lithium salt A in an amount of 2 mol % or more.Type: GrantFiled: February 14, 2006Date of Patent: October 16, 2007Assignee: Hitachi Maxell, Ltd.Inventors: Tetsuo Kawai, Atsushi Yamano, Noriyuki Yabushita, Tadashi Sakata, Hideki Nishihama