Hydrogen Containing Patents (Class 429/200)
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Patent number: 7351501Abstract: Disclosed is a non-aqueous electrolyte for a rechargeable lithium battery including a polyether-modified silicon oil in which a polyether chain is bonded to a terminal end of a linear polysiloxane, a cyclic carbonate, and a lithium salt.Type: GrantFiled: January 9, 2004Date of Patent: April 1, 2008Assignee: Samsung SDI Co., LtdInventors: Cheol-Soo Jung, Takitaro Yamaguchi, Ryuichi Shimizu
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Patent number: 7344572Abstract: A reforming apparatus that generates hydrogen from fuel includes a plurality of reactors each having an internal space and reacting fuel in the internal space, a heat insulating package that contains the plurality of reactors, and a heat insulator that supports the plurality of reactors to be separated from an inner wall of the heat insulating package.Type: GrantFiled: March 23, 2004Date of Patent: March 18, 2008Assignee: Casio Computer Co., Ltd.Inventor: Tadao Yamamoto
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Publication number: 20080020286Abstract: The present invention provides a battery that experiences a small degree of temporal change from the initial battery properties over the long term storage period of the battery. Specifically, the present invention provides a lithium secondary battery, in which a positive electrode capable of storing and releasing lithium and a negative electrode capable of storing and releasing lithium are formed via an electrolyte, wherein: the electrolyte comprises a cyclic solvent and a chain-type solvent and contains a compound having a boron-oxygen bond (B—O) and a carbon-carbon double bond (C?C).Type: ApplicationFiled: July 24, 2007Publication date: January 24, 2008Inventors: Hiroshi Haruna, Eiji Hoshi, Kazushige Kohno
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Publication number: 20080020276Abstract: A non-aqueous electrolyte for a battery comprises a non-aqueous solvent containing a specified cyclic phosphazene compound and a specified difluorophosphate compound, a dicarboxylic anhydride compound having a cyclic structure and a support salt.Type: ApplicationFiled: July 23, 2007Publication date: January 24, 2008Applicant: BRIDGESTONE CORPORATIONInventor: Yasuo Horikawa
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Publication number: 20080003500Abstract: A primary cell having an anode comprising lithium and a cathode comprising iron disulfide (FeS2) and carbon particles. The electrolyte comprises a lithium salt dissolved in a nonaqueous solvent mixture which contains an additive, preferably iodine, suppressing voltage delay. A cathode slurry is prepared comprising iron disulfide powder, carbon, binder, and 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: July 1, 2006Publication date: January 3, 2008Inventors: Nikolai N. Issaev, Michael Pozin, Maya Stevanovic
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Publication number: 20070287071Abstract: A non-aqueous electrolyte for a secondary battery includes a solvent and an electrolyte containing a lithium salt. The solvent contains 4-fluoroethylene carbonate and a chain carboxylic ester represented by the formula R1COOR2, where R1 and R2 are alkyl groups having 3 or less carbon atoms. The amount of the 4-fluoroethylene carbonate is 7 volume % or greater with respect to the total amount of the solvent.Type: ApplicationFiled: June 13, 2007Publication date: December 13, 2007Applicant: SANYO Electric Co., Ltd.Inventors: Takanobu Chiga, Yoshinori Kida
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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: 7297442Abstract: 1. A non-aqueous electrolytic solution comprising an electrolytic salt in a non-aqueous solvent, which further contains a pentafluorophenoxy compound having the formula (I): in which R represents a substituting group such as an alkylcarbonyl group, an alkoxycarbonyl group, an aryloxy-carbonyl group, and an alkanesulfonyl group, under the condition that at least one hydrogen atom contained in the substituting group can be substituted with a halogen atom or an aryl group.Type: GrantFiled: March 13, 2003Date of Patent: November 20, 2007Assignee: Ube Industries, Ltd.Inventors: Koji Abe, Takaaki Kuwata, Takashi Hattori, Yasuo Matsumori
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Publication number: 20070224516Abstract: The non-aqueous electrolyte secondary battery of the present invention includes a positive electrode containing a lithium-containing transition metal oxide as a positive electrode active material, a negative electrode, a separator interposed between the positive electrode and the negative electrode and a non-aqueous electrolyte. The non-aqueous electrolyte includes a non-aqueous solvent and a solute dissolved therein, and the non-aqueous solvent includes a solvent having an electron-withdrawing substituent. The solvent having an electron-withdrawing substituent includes at least one selected from the group consisting of a sulfonic solvent, a nitrile solvent, a ketonic solvent, a fluorine-containing solvent, a chlorine-containing solvent and a carboxylic acid ester solvent. The separator includes a material containing an electron-withdrawing substituent or an atom having an unshared electron pair.Type: ApplicationFiled: March 22, 2007Publication date: September 27, 2007Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Masaki DEGUCHI, Tooru MATSUI, Hiroshi YOSHIZAWA
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Non-aqueous electrolyte solution for secondary battery and non-aqueous electrolyte secondary battery
Publication number: 20070190412Abstract: In a non-aqueous electrolyte secondary battery having a positive electrode, a negative electrode, and a non-aqueous electrolyte solution containing a fluorinated ester as a solvent, battery safety is improved without degrading charge-discharge characteristics. A non-aqueous electrolyte solution for a secondary battery contains a fluorinated ester represented by the chemical formula CHF2COOR, where R is an alkyl group having 1 to 4 carbon atoms or a halogen-atom-substituted alkyl group having 1 to 4 carbon atoms. The fluorinated ester has a water content of 30 ppm or less. The solvent additionally contains a cyclic carbonic ester having an unsaturated C?C bond.Type: ApplicationFiled: February 12, 2007Publication date: August 16, 2007Inventors: Takanobu Chiga, Yoshinori Kida -
Publication number: 20070172729Abstract: Disclosed are nonaqueous electrolyte additives, which can improve the safety of a battery upon overcharge of the battery without reducing the performance of the battery, as well as a nonaqueous electrolyte comprising the additives, and a lithium secondary battery comprising the nonaqueous electrolyte. More particularly, disclosed are a nonaqueous electrolyte comprising both fluorobiphenyl and fluorotoluene as additives, and a lithium secondary battery comprising the nonaqueous electrolyte.Type: ApplicationFiled: January 23, 2007Publication date: July 26, 2007Applicant: LG CHEM, LTD.Inventors: Jeong Ju CHO, Sun Sik SHIN, Hyang Mok LEE, Kyong Won KANG, Eun Ju KANG, Min Chul JANG, Soo Hyun HA
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Publication number: 20070172730Abstract: A nonaqueous electrolyte secondary battery of the invention has a positive electrode having a positive electrode active material, a negative electrode, and a nonaqueous electrolyte having electrolyte salt in a nonaqueous solvent. The electric potential of the positive electrode active material is 4.4 to 4.6 V relative to lithium, and the nonaqueous electrolyte contains a compound expressed by structural formula (I) below. The quantity of compound added is preferably 0.1% to 2% by mass. Also, the positive electrode active material preferably comprises a mixture of a lithium-cobalt composite oxide which is LiCoO2 containing at least both zirconium and magnesium and a lithium-manganese-nickel composite oxide that has a layer structure and contains at least both manganese and nickel. Thanks to such structure, a nonaqueous electrolyte secondary battery can be provided that is charged to charging termination potential of 4.4 to 4.6 V relative to lithium and that has enhanced overcharging safety.Type: ApplicationFiled: January 23, 2007Publication date: July 26, 2007Applicants: SANYO ELECTRIC CO., LTD., UBE INDUSTRIES LTD.Inventors: Masato Iwanaga, Yukihiro Oki, Koji Abe, Kazuhiro Miyoshi
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Publication number: 20070166609Abstract: Disclosed is an electrolyte for batteries, comprising: (a) an electrolyte salt; (b) an organic solvent; (c) a first compound having an oxidation initiation voltage (vs. Li/Li+) higher than the operating voltage of a cathode; and (d) a second reversible compound having an oxidation initiation voltage higher than the operating voltage of the cathode, but lower than the oxidation initiation voltage of the first compound. Also disclosed is a lithium secondary battery comprising said electrolyte. In the lithium secondary battery, two compounds having different safety improvement actions at a voltage higher than the operating voltage of the cathode are used in combination as electrolyte components. Thus, the safety of the secondary battery in an overcharged state can be ensured, and at the same time, the deterioration of the battery can be prevented from occurring when it is repeatedly cycled, continuously charged and stored at high temperature for a long time.Type: ApplicationFiled: January 17, 2007Publication date: July 19, 2007Applicant: LG CHEM, LTD.Inventors: Ho Chun LEE, Sun Sik SHIN, Hong Kyu PARK, Joo Mi JEON, Jeong Ju CHO
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Patent number: 7238452Abstract: An electrolyte for a lithium battery includes a non-aqueous organic solvent, lithium salts, and an additive compound of formula (1): where X is selected from the group consisting of an alkyl, an alkoxy, a halogen, and an electron withdrawing group. The lithium battery having the electrolyte shows improved electrochemical properties, such as capacity at high rate and safety characteristics compared to a battery including the conventional non-aqueous electrolyte which does not include the additive compound.Type: GrantFiled: September 21, 2004Date of Patent: July 3, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Hyun-Jeong Lim, Eui-Hwan Song
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Patent number: 7229718Abstract: Disclosed is an electrolyte for a rechargeable lithium battery including 5 to 40 volume % of at least one fluorine-substituted ether compound represented by R1—O—R2 (wherein R1 and R2 are alkyl groups substituted with fluorine), having a substitution ratio of hydrogen with fluorine of 57 to 86%, a viscosity of 0.9 to 2.3 cp, and a boiling point of at least 88° C., and 60 to 90 volume % of a non-aqueous organic solvent having a flash point of at least 80° C.Type: GrantFiled: May 15, 2003Date of Patent: June 12, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Takitaro Yamaguchi, Ryuichi Shimizu, Cheol-Soo Jung
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Patent number: 7223500Abstract: An electrolyte of a lithium secondary battery includes lithium salts, an organic solvent with a high boiling point, and a carbonate-based additive compound having substituents selected from the group consisting of a halogen, a cyano (CN), and a nitro (NO2). The electrolyte improves discharge, low temperature, and cycle life characteristics of a lithium secondary battery.Type: GrantFiled: September 3, 2003Date of Patent: May 29, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Hyeong-Gon Noh, Cheol-Soo Jung, Eui-Hwan Song
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Patent number: 7105250Abstract: A nonaqueous electrolytic solution and a lithium battery employing the same include a lithium salt, an organic solvent, and a halogenated benzene compound. The use of the nonaqueous electrolytic solution causes formation of a polymer by oxidative decomposition of the electrolytic solution even if a sharp voltage increase occurs due to overcharging of the battery, leading to consumption of an overcharge current, thus protecting the battery.Type: GrantFiled: August 11, 2003Date of Patent: September 12, 2006Assignee: Samsung SDI Co., Ltd.Inventors: Jun-Ho Kim, Ha-Young Lee, Sang-Hoon Choy, Ho-Sung Kim
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Patent number: 7094328Abstract: The present invention relates to acids of the general formula [I], [RyPF6-y]?H+ [I], where y=1, 2 or 3, and in which the ligands R may be identical or different and R is a perfluorinated C1-8-alkyl or aryl group or R is a partially fluorinated C1-8-alkyl or aryl group, in which some of the F or H may have been substituted by chlorine. The present invention furthermore relates to a process for the preparation of the acids according to the invention, to salts comprising a cation and the anion of the acid according to the invention, and to a process for the preparation of the salts. The invention furthermore relates to the use of the acids and salts according to the invention.Type: GrantFiled: June 11, 2002Date of Patent: August 22, 2006Assignee: Merck Patent GmbHInventors: Nikolai Ignatyev, Michael Schmidt, Andreas Kühner, Volker Hilarius, Udo Heider, Andriy Kucheryna, Peter Sartori, Helge Willner
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Patent number: 7049029Abstract: A nonaqueous electrolyte for improving overcharge safety of a lithium battery using the same includes an organic solvent, a lithium salt, and a hydride of a compound represented by the Formula 1: R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13 and R14 are the same or different, and are independently hydrogen, halogen, a substituted or unsubstituted C1–C20 alkyl, a substituted or unsubstituted C1–C20 alkoxy, nitro or amine group. The nonaqueous electrolyte forms a polymer due to its oxidative decomposition even if there is an increase in voltage due to overcharge of a battery by some uncontrollable conditions.Type: GrantFiled: October 17, 2002Date of Patent: May 23, 2006Assignee: Samsung SDI Co., Ltd.Inventors: Sang-hoon Choy, Ho-sung Kim, Hee-young Sun, Hyeong-gon Noh
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Patent number: 6958198Abstract: The invention relates to a non-aqueous electrochemical apparatus in which the difference (?l??se) between the surface tension ?l of non-aqueous electrolyte and the surface free energy ?se of electrode is not more than 10 dynes/cm.Type: GrantFiled: July 10, 2001Date of Patent: October 25, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuya Iwamoto, Takafumi Oura, Kumiko Sonoda, Makino Hatazaki, Hiroshi Yoshizawa, Shinji Nakanishi
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Patent number: 6939647Abstract: Non-aqueous electrolyte solutions capable of protecting lithium metal and lithium-inserted carbonaceous electrodes include an electrolyte salt, preferably LiPF6, and a non-aqueous electrolyte solvent mixture comprising at least one of trialkyl phosphites, one or more cyclic or/and linear carbonates, and optionally other additives, such as, gelling agents, ionically conductive solid polymers, and other additives. The trialkyl phosphites have the following general formula: wherein the oxidation number of the phosphorus atom is III (three), R1, R2, and R3 are the same or different, independently selected from linear or branched alkyl groups having 1 to 4 carbon atoms, optionally but not limited to, with one or more of the alkyl substituents being substituted by one or more halogen atoms, preferably fluorine atoms.Type: GrantFiled: February 1, 2002Date of Patent: September 6, 2005Assignee: The United States of America as represented by the Secretary of the ArmyInventors: T. Richard Jow, Shengshui Zhang, Kang Xu, Michael S. Ding
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Patent number: 6936382Abstract: Provided is a lithium battery in which the cathode comprises an electroactive sulfur-containing material and the electrolyte comprises a lithium salt, a non-aqueous solvent, and one or more capacity-enhancing reactive components. Suitable reactive components include electron transfer mediators. Also are provided methods for making the lithium battery.Type: GrantFiled: March 17, 2003Date of Patent: August 30, 2005Assignee: Moltech CorporationInventors: Yuriy V. Mikhaylik, Terje A. Skotheim, Boris A. Trofimov
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Patent number: 6921612Abstract: Provided are a nonaqueous electrolyte for improving overcharge safety and a lithium battery using the same. The nonaqueous electrolyte according to the present invention forms a polymer due to its oxidative decomposition even if there is an increase in voltage due to overcharge of a battery by some uncontrollable conditions, so that overcharge current is continuously consumed, thereby protecting the battery. Therefore, overcharge safety of the battery can be enhanced, and occurrence of swelling is reduced. Also, deterioration in formation, standard capacity and cycle life characteristics can be prevented.Type: GrantFiled: October 17, 2002Date of Patent: July 26, 2005Assignee: Samsung SDI Co., Ltd.Inventors: Sang-hoon Choy, Hyeong-gon Noh, Ha-young Lee, Hee-young Sun, Ho-sung Kim
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Patent number: 6863838Abstract: Zwitterionic imide compounds are provided according to the formula: R1—SO2—N?—SO2—R2+, where R1 and R2+ are any suitable groups. Typically R1 is a highly fluorinated alkane and R2+ contains a quaternary ammonium group or a heteroatomic aromatic group having an cationic nitrogen, such as: pyridiniumyl, pyridaziniumyl, pyrimidiniumyl, pyraziniumyl, imidazoliumyl, pyrazoliumyl, thiazoliumyl, oxazoliumyl, or triazoliumyl. Zwitterionic liquids are provided, typically having melting points of less than 100° C. and typically having a solubility in water of less than 5% by weight.Type: GrantFiled: October 25, 2001Date of Patent: March 8, 2005Assignee: 3M Innovative Properties CompanyInventor: Steven Joseph Hamrock
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Publication number: 20040265701Abstract: A secondary cell employs a nonaqueous electrolyte solution including a nonaqueous solvent and a salt, and a flame retardant material that is liquid at room temperature and pressure and substantially immiscible in the nonaqueous electrolyte solution. The nonaqueous electrolyte solution is formed by dissolving a salt, preferably an alkali metal salt, in a nonaqueous solvent. The nonaqueous solvent preferably includes a cyclic carbonate and/or a linear carbonate. The cyclic carbonate preferably contains an alkylene group with 2 to 5 carbon atoms, and the linear carbonate preferably contains a hydrocarbon group with 1 to 5 carbon atoms. Preferred salts include LiPF6 and LiBF4 at a concentration between about 0.1 and 3.0 moles/liter. The flame retardant material is preferably a halogen-containing compound in an amount by weight of nonaqueous solvent in a range of about 1 to about 99 wt %, and preferred halogen-containing compounds contain perfluoralkyl or perfluorether groups.Type: ApplicationFiled: June 9, 2004Publication date: December 30, 2004Inventors: Hisashi Tsukamoto, Tsuneaki Koike
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Publication number: 20040259002Abstract: An electrolyte for a lithium secondary battery includes lithium salts, a non-aqueous organic solvent, and additive compounds, which initiates decomposition at 4V to 5V and show a constant current maintenance plateau region of more than or equal to 0.5V at measurement of LSV (linear sweep voltammetry). 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 by increased electrochemical energy and heat at overcharge. The conductive polymer layer prevents decomposition of the organic solvent. Accordingly, the electrolyte inhibits gas generation caused by decomposition of the organic solvent during high temperature storage, and also improves safety of the battery during overcharge.Type: ApplicationFiled: April 2, 2004Publication date: December 23, 2004Inventors: Jin-Hee Kim, Jin-Sung Kim, Sang-Moon Hwang, Meen-Seon Paik, Hak-Soo Kim
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Patent number: 6803152Abstract: A nonaqueous electrolyte additive includes an organosilicon backbone including at least one ethylene oxide (CH2CH2O) unit, at least two pyridinium groups bound to the backbone, the pyridinium groups each bound to at least one halogen ion or halogen-containing anion. The additive is useful for forming improved liquid and polymer electrolytes for lithium ion and lithium metal batteries.Type: GrantFiled: April 19, 2002Date of Patent: October 12, 2004Assignee: ENER1 Battery CompanyInventors: Elena M. Shembel, Oleg V. Chervakov, Natalya I. Globa, Peter Novak
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Publication number: 20040197667Abstract: An electrolyte of a lithium secondary battery includes lithium salts, an organic solvent with a high boiling point, and a carbonate-based additive compound having substituents selected from the group consisting of a halogen, a cyano (CN), and a nitro (NO2). The electrolyte improves discharge, low temperature, and cycle life characteristics of a lithium secondary battery.Type: ApplicationFiled: September 3, 2003Publication date: October 7, 2004Applicant: SAMSUNG SDI CO., LTD.Inventors: Hyeong-Gon Noh, Cheol-Soo Jung, Eui-Hwan Song
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Publication number: 20040197668Abstract: Disclosed is a non-aqueous electrolyte for a rechargeable lithium battery including a polyether-modified silicon oil in which a polyether chain is bonded to a terminal end of a linear polysiloxane, a cyclic carbonate, and a lithium salt.Type: ApplicationFiled: January 9, 2004Publication date: October 7, 2004Inventors: Cheol-Soo Jung, Takitaro Yamaguchi, Ryuichi Shimizu
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Publication number: 20040101750Abstract: A set of fuel cell system heat exchangers that have been modified to incorporate thermal-to-electric devices is disclosed. These devices convert a portion of the thermal energy flowing through each heat exchanger to electric energy. Methods for operating the fuel cell system are also disclosed.Type: ApplicationFiled: December 9, 2002Publication date: May 27, 2004Inventor: Steven D. Burch
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Publication number: 20040072062Abstract: 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 Ain 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: ApplicationFiled: August 19, 2003Publication date: April 15, 2004Inventors: Fusaji Kita, Hideo Sakata, Haruki Kamizori
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Publication number: 20040058251Abstract: A nonaqueous electrolytic solution for lithium secondary batteries. When nonaqueous solvent comprises a combination of an ester of a tertiary carboxylic acid and a cyclic carbonate such as propylene carbonate or ethylene carbonate, a lithium salt having a fluorine atom is preferably used as the electrolyte salt. In this case, the ester of a tertiary carboxylic acid is preferably used in a relatively small amount, especially in an amount of about 0.5 to 35 wt. % based on the nonaqueous solvent.Type: ApplicationFiled: June 17, 2003Publication date: March 25, 2004Inventors: Toshikazu Hamamoto, Koji Abe, Yoshihiro Ushigoe, Yasuo Matsumori
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Publication number: 20040038133Abstract: Disclosed is an electrolyte for a rechargeable lithium battery including 5 to 40 volume % of at least one fluorine-substituted ether compound represented by R1—O—R2 (wherein R1 and R2 are alkyl groups substituted with fluorine), having a substitution ratio of hydrogen with fluorine of 57 to 86%, a viscosity of 0.9 to 2.3 cp, and a boiling point of at least 88° C., and 60 to 90 volume % of a non-aqueous organic solvent having a flash point of at least 80° C.Type: ApplicationFiled: May 15, 2003Publication date: February 26, 2004Inventors: Takitaro Yamaguchi, Ryuichi Shimizu, Cheol-Soo Jung
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Publication number: 20040029018Abstract: A nonaqueous electrolytic solution and a lithium battery employing the same include a lithium salt, an organic solvent, and a halogenated benzene compound. The use of the nonaqueous electrolytic solution causes formation of a polymer by oxidative decomposition of the electrolytic solution even if a sharp voltage increase occurs due to overcharging of the battery, leading to consumption of an overcharge current, thus protecting the battery.Type: ApplicationFiled: August 11, 2003Publication date: February 12, 2004Applicant: SAMSUNG SDI CO., LTD.Inventors: Jun-Ho Kim, Ha-Young Lee, Sang-Hoon Choy, Ho-Sung Kim
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Patent number: 6677085Abstract: An electrolyte system for lithium batteries with enhanced safety. The system contains at least one conductive salt containing lithium and at least one electrolyte liquid. The electrolyte liquid contains an effective amount of a partially fluorinated compound derived from a diol corresponding to the formula (I): R1CO—O—[CHR3(CH2)m—O]n—R2 (I) in which R1 is a (C1-C8)-alkyl or (C3-C8)-cycloalkyl group, and each R1 group is partially fluorinated or perfluorinated so that at least one hydrogen atom of the group is replaced by fluorine; R2 is a (C1-C8)-alkylcarbonyl or (C3-C8)-cycloalkylcarbonyl group, and each R2 group may optionally be partially fluorinated or perfluorinated; R3 is a hydrogen atom or a (C1-C8)-alkyl or (C3-C8)-cycloalkyl group; m is 0, 1, 2 or 3; and n is 1, 2 or 3.Type: GrantFiled: June 19, 2001Date of Patent: January 13, 2004Assignee: Solvay Fluor und Derivate GmbHInventors: Wolfgang Appel, Sergej Pasenok, Juergen Besenhard, Lars Henning Lie, Martin Winter
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Patent number: 6627099Abstract: An electrolyte composition which is excellent in durability and charge transport performance, and an electrochemical battery in which deterioration of the charge transport performance with time is minimized, the electrolyte composition including therein a salt which comprises an anion which contains a mesogen group, and an alkyl or alkenyl group having 6 carbons or more in the structure of the anion, and an organic or inorganic cation.Type: GrantFiled: August 22, 2001Date of Patent: September 30, 2003Assignee: Fuji Photo Film Co., Ltd.Inventors: Michio Ono, Koji Wariishi, Takayasu Yasuda, Chang-yi Qian
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Publication number: 20030170549Abstract: A non-aqueous electrolyte battery of the invention comprises a non-aqueous electrolyte which contains a chain carbonic ester having a hydrocarbon group with carbon number varied from 4 to 12 and a hydrocarbon group with carbon number varied from 1 to 12, a non-aqueous solvent and a lithium salt; wherein the non-aqueous solvent contains ethylene carbonate, propylene carbonate or gamma-butyrolactone, and the sum of volume ratios of ethylene carbonate, propylene carbonate and gamma-butyrolactone in the non-aqueous solvent is 80% or more.Type: ApplicationFiled: January 22, 2003Publication date: September 11, 2003Applicant: JAPAN STORAGE BATTERY CO., LTD.Inventor: Tetsuya Murai
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Patent number: 6589692Abstract: There is provided an aluminum battery which comprises a positive electrode, a negative electrode containing at least one kind of active material selected from the group consisting of aluminum metal and aluminum alloys, and an electrolyte containing a halogen ion and at least one kind of ion selected from the group consisting of sulfate ion (SO42−) and nitrate ion (NO3−).Type: GrantFiled: February 28, 2001Date of Patent: July 8, 2003Assignee: Kabushiki Kaisha ToshibaInventor: Norio Takami
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Publication number: 20030099886Abstract: Provided are a nonaqueous electrolyte for improving battery safety by suppressing risks associated with the battery becoming overcharged as a result of certain uncontrolled conditions and a lithium battery with improved overcharge safety. The nonaqueous electrolyte includes an organic solvent, a lithium salt, and a biphenylene oxide based compound.Type: ApplicationFiled: October 16, 2002Publication date: May 29, 2003Applicant: Samsung SDI Co., Ltd.Inventors: Sang-hoon Choy, Ho-sung Kim, Hee-young Sun, Hyeong-gon Noh
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Publication number: 20030087161Abstract: The invention relates to non-aqueous electrochemical cell comprising: a first electrode and a second counterelectrode each capable of reversibly incorporating an alkali metal, preferably lithium; an alkali metal incorporated into at least one of said electrodes; and an electrolyte comprising at least one salt of the alkali metal and a non-aqueous solvent; wherein the said salt is capable of generating HF in the presence of water and the cell includes at least one component, such as a temperature sensitive separator, which precludes complete removal of residual water from the cell, and wherein the cell includes sufficient of an unsaturated cyclic carbonate to reduce the concentration of HF formed by reaction of the electrolyte salt with the residual water.Type: ApplicationFiled: June 17, 2002Publication date: May 8, 2003Inventor: Martin Topsoe
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Publication number: 20030087160Abstract: A nonaqueous electrolyte has electrolyte salt dissolved in a nonaqueous solvent, wherein the ratio of the nonaqueous solvent having a ring structure is 50 wt % or more in all nonaqueous electrolyte solution components and the nonaqueous solvent includes at least one or more kinds of halogenated solvents expressed by a below-described general formula (1).Type: ApplicationFiled: July 12, 2002Publication date: May 8, 2003Inventors: Yusuke Suzuki, Mashio Shibuya
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Publication number: 20030049542Abstract: Refined ethylene sulfite exhibits an excellent storage stability when used as a constituent of an electrolyte. A method of producing same has a step of reacting ethylene glycol and thionyl chloride to producing raw ethylene sulfite, a rectifying step for rectifying the raw ethylene sulfite, and a refining process for refining the raw ethylene sulfite or the rectified ethylene sulfite conducted before or after the rectifying step. The refining process is at least one process selected from the group consisting of a washing process, a dehydration process by total reflux distillation, a second rectifying process, and an absorbing process. Refined ethylene sulfite produced according to the method contains chloroethanol in an amount of not more than 1000 ppm.Type: ApplicationFiled: August 26, 2002Publication date: March 13, 2003Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Toshimitsu Kato, Norioki Mine, Minoru Kotato
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Publication number: 20020042003Abstract: Electrolyte systems for lithium batteries with enhanced safety containing at least one lithium-containing conductive salt and at least one electrolyte liquid, in which the electrolyte liquid includes an effective amount of at least one partially fluorinated amide of formula (I)Type: ApplicationFiled: June 19, 2001Publication date: April 11, 2002Inventors: Wolfgang Appel, Sergej Pasenok, Juergen Besenhard, Lars Henning Lie, Martin Winter
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Publication number: 20020034692Abstract: An electrolyte system for lithium batteries with enhanced safety. The system contains at least one conductive salt containing lithium and at least one electrolyte liquid.Type: ApplicationFiled: June 19, 2001Publication date: March 21, 2002Inventors: Wolfgang Appel, Sergej Pasenok, Juergen Besenhard, Lars Henning Lie, Martin Winter
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Publication number: 20020028389Abstract: A non-aqueous electrolyte is disclosed, which comprises a non-aqueous solvent and a solute represented by the general formula(1): MBR1R2R3R4, wherein M is an alkali metal atom or an ammonium group and R1 to R4 are each independently electron withdrawing groups or electron withdrawing atoms bound to B where at least one of R1 to R4 is other than a fluorine atom. The solute has a thermal stability substantially equal to that of LiBF4 and an anion portion having a high electronegativity, and easily dissociates into ions. Therefore, a non-aqueous electrolyte containing this solute has a high ionic conductivity and is difficult to cause a generation of a gas or deterioration in characteristics due to the decomposition of the solute, which occurs during use at high temperatures or after storage at high temperatures.Type: ApplicationFiled: July 10, 2001Publication date: March 7, 2002Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Kumiko Sonoda, Atsushi Ueda, Kazuya Iwamoto
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Publication number: 20020022182Abstract: The present invention relates to fluoroalkyl phosphates, to a process for the preparation, and to their use as conductive salts in batteries, capacitors, supercapacitors and galvanic cells.Type: ApplicationFiled: August 1, 2001Publication date: February 21, 2002Applicant: MERCK Patent GmbHInventors: Udo Heider, Michael Schmidt, Andreas Kuhner, Peter Sartori, Nikolai Ignatyev
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Publication number: 20020001755Abstract: The invention can relate to lithium salts of the general formula (I)Type: ApplicationFiled: April 5, 2001Publication date: January 3, 2002Applicant: MERCK PATENT GESELLSCHAFTInventors: Udo Heider, Michael Schmidt, Andreas Kuhner, Dagmar Petigk
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Patent number: 6319428Abstract: The invention concerns ionic compounds in which the anionic load has been delocalized. A compound disclosed by the invention is comprised of an amide or one of its salts, including an anionic portion combined with at least one cationic portion M+m in sufficient numbers to ensure overall electronic neutrality; the compound is further comprised of M as a hydroxonium, a nitrosonium NO+, an ammonium —NH4+, a metallic cation with the valence m, an organic cation with the valence m, or an organometallic cation with the valence m. The anionic portion matches the formula RF—SOx—N−Z, wherein RF is a perfluorinated group, x is 1 or 2, and Z is an electroattractive substituent. The compounds can be used notably for ionic conducting materials, electronic conducting materials, colorants, and the catalysis of various chemical reactions.Type: GrantFiled: December 3, 1998Date of Patent: November 20, 2001Assignees: Hydro-Quebec, Centre National de la Recherche ScientifiqueInventors: Christophe Michot, Michel Armand, Michel Gauthier, Yves Choquette
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Patent number: 6235433Abstract: A secondary battery has a positive electrode, an electrolyte, and a negative electrode. The electrolyte is made up of a high molecular gel electrolyte comprising a matrix polymer and an electrolyte solution included in the matrix polymer. The electrolyte solution is formed by dissolving an ionic compound in a nonaqueous organic solvent. The matrix polymer forms a high molecular network by dispersing (i) a compound containing at least two polymerizable functional groups, (ii) compound having a polymerizable functional group and containing one of a carbonyl group, an amido group, and an oxyalkylene group, and (iii) a vinylidene fluoride polymer and polymerizing them.Type: GrantFiled: December 21, 1998Date of Patent: May 22, 2001Assignee: NEC CorporationInventors: Kosuke Amano, Yutaka Bannai, Hiroshi Yageta, Masaharu Satoh, Etsuo Hasegawa
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Patent number: 6210830Abstract: The invention relates to novel lithium fluorophosphates of the general formula Li+[PFa(CHbFc(CF3)d)e]−, (I) wherein a is 1, 2, 3, 4 or 5, b is 0 or 1, c is 0, 1, 2 or 3, d is 0, 1, 2 or 3 and e is 1, 2, 3 or 4, with the condition that the sum of a+e is equal to 6, the sum of b+c+d is equal to 3 and b and c are not simultaneously 0, with the proviso that the ligands (CHbFc(CF3)d) may be different, a process for producing said compounds, their use in electrolytes, and also lithium batteries produced using said electrolytes.Type: GrantFiled: March 8, 2000Date of Patent: April 3, 2001Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Peter Sartori, Nikolai Ignatyev