Precursor Composition Patents (Class 429/189)
-
Patent number: 7629079Abstract: A lithium secondary battery which comprises: a negative electrode comprising as an active material a carbonaceous material capable of electrochemically holding/releasing lithium; a positive electrode comprising as an active material a lithium chalcogenide; and polymer electrolyte layers united respectively with the negative electrode and the positive electrode. The polymer electrolyte layers comprise an ionically conductive polymer matrix holding a nonaqueous electrolytic solution. They are obtained by crosslinking and polymerizing a liquid mixture of a monomeric precursor for the ionically conductive polymer and the nonaqueous electrolytic solution respectively on the negative electrode and the positive electrode using different polymerization initiators.Type: GrantFiled: September 28, 2001Date of Patent: December 8, 2009Assignees: Dai-Ichi Kogyo Seiyaki Co., Ltd., Sharp CorporationInventors: Tsutomu Sada, Kazunari Takeda, Yumiko Takashima, Naoto Nishimura, Takehito Mitate, Kazuo Yamada, Motoaki Nishijima, Naoto Torata, Kouichi Ui
-
Patent number: 7622220Abstract: A polymer electrolyte forming composition includes a trialkoxysilane containing an epoxy group, polyethyleneimine, and at least one of heteropolyacid and trifluoromethanesulfoneimide.Type: GrantFiled: January 17, 2006Date of Patent: November 24, 2009Assignees: Samsung SDI Co., Ltd., The University of Texas System Board of RegentsInventors: Hae-kyoung Kim, Kenneth J. Balkus, Jr., Hyuk Chang, John Patrick Ferraris, Duck Joo Yang, Zhiwei Yang
-
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
-
Patent number: 7579115Abstract: A gelling agent for use in an alkaline battery comprises a cross-linked polymer (A) formed with a (meth)acrylic acid (salt) as a principal constituent monomer unit, wherein the gelling agent allows an obtained gel (GA) to have a viscosity ratio (N1/N60), determined as follows, of 0.7 to 1.3, and includes components soluble in 37 wt % aqueous solution of potassium hydroxide that account for 30 wt % or less of the gelling agent: the viscosity ratio (N1/N60) of the gel (GA) is determined by preparing the gel (GA) by stirring 100 parts by weight of 37 wt % aqueous solution of potassium hydroxide, 2 parts by weight of the cross-linked polymer (A), and 200 parts by weight of zinc powder at 40° C. so as to be mixed uniformly, and measuring a viscosity (40° C., N1) of the gel (GA) after being left to stand at the same temperature for one day, and a viscosity (40° C., N60) of the gel (GA) after being left to stand at the same temperature for sixty days, according to JIS K7117-1: 1999.Type: GrantFiled: July 6, 2005Date of Patent: August 25, 2009Assignee: Sanyo Chemical Industries, Ltd.Inventors: Kazuya Ohtani, Takeaki Yamaguchi
-
Patent number: 7560194Abstract: The present invention is directed to a gel polymer electrolyte for use in rechargeable polymer secondary batteries and a precursor composition thereof. The precursor composition can be injected into an aluminum shell of a battery cell, which undergoes in-situ heating polymerization by heating and forms a gel polymer electrolyte penetrating a partition membrane therein. The precursor composition contains (meth)acrylic (acrylate) monomers and a modified bismaleimide oligomer resulting from a reaction of barbituric acid and bismaleimide.Type: GrantFiled: December 16, 2005Date of Patent: July 14, 2009Assignee: Industrial Technology Research InstituteInventors: Yueh-Wei Lin, Jing-Pin Pan, Mao-Sung Wu, Jyh-Tsung Lee, Jung-Mu Hsu, Jung-Cheng Lin
-
Publication number: 20080160404Abstract: 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: ApplicationFiled: December 28, 2007Publication date: July 3, 2008Inventors: Yueh-Wei Lin, Tsung-Hsiung Wang, Jing-Pin Pan, Chang-Rung Yang, Jung-Mu Hsu
-
Patent number: 7387851Abstract: An electrochemical device includes a first electrode in electrical communication with a first current collector, a second electrode in electrical communication with a second current collector and a crosslinked solid polymer in contact with the first and second electrodes. At least one of the first and second electrodes includes a network of electrically connected particles comprising an electroactive material, and the particles of one electrode exert a repelling force on the other electrode when the first and second electrodes are combined with an uncrosslinked precursor to the solid polymer.Type: GrantFiled: January 30, 2003Date of Patent: June 17, 2008Assignee: A123 Systems, Inc.Inventors: Antoni S. Gozdz, Richard K. Holman, Andrew L. Loxley, Ronnie Wilkins
-
Patent number: 7378034Abstract: The invention relates to an ionic compound corresponding to the formula [R1X1(Z1)-Q?-X2(Z2)-R2]m Mm+ in which Mm+ is a cation of valency m, each of the groups Xi is S=Z3, S=Z4, P—R3 or P—R4; Q is N, CR5, CCN or CSO2R5, each of the groups Zi is ?O, ?NC?N, ?C(C?N)2, ?NS(=Z)2R6 or ?C[S(=Z)2R6]2, each of the groups Ri, is Y, YO—, YS—, Y2N— or F, Y represents a monovalent organic radical or alternatively Y is a repeating unit of a polymeric frame. The compounds are useful for producing ion conducting materials or electrolytes, as catalysts and for doping polymers.Type: GrantFiled: January 17, 2007Date of Patent: May 27, 2008Assignees: Universite de Montreal, Centre National de la Recherche Scientifique, Institute of Organic Chemistry National Academy of Sciences of UkraineInventors: Michel Armand, Christophe Michot, Yurii Yagupolskii, Lev Yagupolskii, Andrej Bezdudny, Natalya Kondratenko
-
Publication number: 20080076026Abstract: Provided is a gel polymer electrolyte comprising a diacrylamide compound as a precursor for formation of a crosslinked polymer. The gel polymer electrolyte in accordance with the present invention enables improvements of the battery safety by significant reduction of thickness swelling of the battery to thereby prevent the electrolyte leakage, while simultaneously preventing deterioration of charge-discharge rate characteristics and cycle characteristics which may occur upon use of a gel-type electrolyte.Type: ApplicationFiled: July 11, 2007Publication date: March 27, 2008Applicant: LG CHEM, LTD.Inventors: Suyoung Ryu, Eun young Kim, Joo-Hwan Sung, Dongmyung Kim
-
Patent number: 7347954Abstract: A polymer electrolyte-forming composition containing (A) a quaternary ammonium salt of general formula (1) below and (B) an ionic liquid can be converted into a polymer without compromising the excellent properties of the ionic liquid, thus enabling an electrolyte having an excellent safety and electrical conductivity and also a broad potential window to be obtained. In formula (1), R1 to R3 are each independently an alkyl group of 1 to 5 carbons or a substituent having a reactive unsaturated bond and any two from among R1 to R3 may together form a ring, and R4 is methyl, ethyl or a substituent having a reactive unsaturated bond, with the proviso that at least one of R1 to R4 is a substituent having a reactive unsaturated bond. X is a monovalent anion, the letter m is an integer from 1 to 8, and the letter n is an integer from 1 to 4.Type: GrantFiled: September 19, 2003Date of Patent: March 25, 2008Assignee: Nisshinbo Industries, Inc.Inventors: Kimiyo Banno, Kanako Yuyama, Kentaro Takagi, Gen Masuda, Takaya Sato
-
Patent number: 7321012Abstract: A method of manufacturing an intrinsically conductive polymer crosslinking at least a portion of an intrinsically conductive polymer precursor in the solid state, the swollen state, or combinations comprising at least one of the foregoing states, wherein the swollen state is characterized as being one wherein the intrinsically conductive polymer precursor increases in volume upon exposure to a solvent without completely dissolving in the solvent. In another embodiment, a method of manufacturing a pattern comprises casting a film of an intrinsically conductive polymer precursor on a substrate; and crosslinking at least a portion of the film by oxidation, wherein the crosslinking occurs in the solid state, the swollen state or combinations comprising at least one of the foregoing states.Type: GrantFiled: February 26, 2004Date of Patent: January 22, 2008Assignee: The University of ConnecticutInventor: Gregory A. Sotzing
-
Patent number: 7314687Abstract: A gelatinizer for alkaline batteries, which comprises crosslinked polymer particles comprising, as one or more main constituting monomer units, (meth) acrylic acid and/or an alkali metal salt thereof having an average particle size of 0.1 to 2,000 ?m, and a super fine particle form metal oxide having an average particle size of 0.1 to 100 nm; and an alkaline battery using the gelatinizer. The impact resistance of the battery, the discharge characteristic thereof, the lifespan thereof, and others are very good. The present invention can make the time for producing alkaline batteries short, and is useful for producing batteries containing none of materials harmful to the human body, such as benzene.Type: GrantFiled: July 26, 2002Date of Patent: January 1, 2008Assignee: Sanyo Chemical Industries, Ltd.Inventors: Takashi Sumiya, Takeaki Yamaguchi
-
Patent number: 7306822Abstract: Electronic devices prepared from nanoscale powders are described. Methods for utilizing nanoscale powders and related nanotechnology to prepare capacitors, inductors, resistors, thermistors, varistors, filters, arrays, interconnects, optical components, batteries, fuel cells, sensors and other products are discussed.Type: GrantFiled: May 26, 2004Date of Patent: December 11, 2007Assignee: NanoProducts CorporationInventors: Tapesh Yadav, Hongxing Hu
-
Patent number: 7288339Abstract: Provided are a lithium secondary battery with suppressed decomposition of an electrolytic solution, and a preparation method thereof. The lithium secondary battery includes a current collector, a cathode and an anode having each active material layer formed on the current collector, and a polymer electrolyte interposed between the cathode and the anode. In the lithium secondary battery, a fluorine resin film is formed on at least one surface of the active material layers of the cathode and the anode. A fluorine resin exists in pores between constituents contained in at least one active material layer of the cathode and the anode. The polymer electrolyte is a polymerized product of a crosslinking monomer and an electrolytic solution including a lithium salt and an organic solvent. Also, a porous membrane made of an insulating resin is interposed between the cathode and the anode.Type: GrantFiled: January 21, 2003Date of Patent: October 30, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Myung-dong Cho, Ju-yup Kim
-
Patent number: 7238445Abstract: It is an object to provide a high ion conductive solid electrolyte which uses organic and inorganic complex compound having water absorption and water resistance and to provide an electrochemical system using the high ion conductive solid electrolyte. The high ion conductive solid electrolyte is composed a complex compound including water that has zirconic acid compound and polyvinyl alcohol and compound having carboxyl group or metal salt of the compound having carboxyl group. An aqueous solution in which zirconium salt or oxyzirconnium salt and polyvinyl alcohol and compound having carboxyl group or metal salt of the compound having carboxyl group are dissolved is neutralized by alkali. After removing water used as solvent, unnecessary salts are removed from the neutralized solution. The high ion conductive solid electrolyte is obtained which is composed of the complex compound. Various electrochemical systems are obtained each of which use the high ion conductive solid electrolyte.Type: GrantFiled: March 31, 2003Date of Patent: July 3, 2007Assignee: Nippon Kodoshi CorporationInventor: Haruo Sawa
-
Patent number: 7220517Abstract: A solid electrolyte, a method of manufacturing the same, and a lithium battery and a thin-film battery that employ the solid electrolyte are provided. The solid electrolyte contains nitrogen to enhance the ionic conductivity and electrochemical stability of batteries.Type: GrantFiled: September 8, 2003Date of Patent: May 22, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Young-sin Park, Seok-soo Lee, Young-gu Jin
-
Patent number: 7138211Abstract: A solidifying material for a cell electrolyte solution is a block copolymer, which comprises, as segments A, a polymer non-compatible with the cell electrolyte solution and, as segments B, a polymer compatible with the cell electrolyte solution. The solidifying material absorbs and solidifies the cell electrolyte solution. A smallest unit of the block copolymer is A-B-A. To each of the segments B, at least one group selected from the group consisting of a carboxyl group, an ester group, a hydroxyl group, a sulfonic group, an amino group, a cyclic carbonate group and a polyoxyalkylene group is bonded via a —S— bond or a —C— bond.Type: GrantFiled: April 22, 2004Date of Patent: November 21, 2006Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Minoru Takizawa, Yoshifumi Sugito, Naomi Oguma, Seiji Doi, Sachio Yoshikawa, Michiei Nakamura
-
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
-
Patent number: 6905795Abstract: A polymer electrolyte includes a gel-forming polymer electrolyte including a gel-forming compound connected at metal cations, and an organic electrolyte of a lithium salt and an aprotic solvent. The polymer electrolyte includes a gel-forming polymer electrolyte that includes at least one aziridine ring-containing compound, and an organic electrolyte of lithium salt and aprotic solvent.Type: GrantFiled: June 19, 2002Date of Patent: June 14, 2005Assignee: Samsung SDI Co., Ltd.Inventors: Cheol-Soo Jung, Takitaro Yamaguchi, Ryuichi Shimizu
-
Patent number: 6893774Abstract: Fluoroalkylphosphate salts of Formula I, described herein, are suitable for use, alone or in mixtures with, e.g., other salts, in electrolytes, primary batteries, secondary batteries, capacitors, supercapacitors or galvanic cells.Type: GrantFiled: February 25, 2002Date of Patent: May 17, 2005Assignee: Merck Patent GmbHInventors: Michael Schmidt, Andreas Kuhner, Nikolai Ignatyev, Peter Sartori
-
Patent number: 6887619Abstract: Disclosed herein are cross-linked polysiloxane polymers having oligooxyethylene side chains. Lithium salts of these polymers can be synthesized as a liquid and then caused to solidify in the presence of elevated temperatures to provide a solid electrolyte useful in lithium batteries.Type: GrantFiled: February 13, 2003Date of Patent: May 3, 2005Assignee: Quallion LLCInventors: Robert C. West, Zhengcheng Zhang
-
Patent number: 6855378Abstract: Methods are disclosed for printing (2-7) multilayer electronic components, and circuits on a surface (2), where at least one of the layers is formed by a redox reaction (6) occurring in a deposited solution (4, 5). Electronic components may comprise semiconductors such as in transistors or diode, or metal oxide or electrolyte such as in batteries or fuel cells, or are capacitors, inductors, and resistors. Preferably, the oxidizer of the redox reaction is a strong oxidizer, and the reducer is a strong reducer (3). Reactions are preferably sufficiently exothermic that they can be initiated (6), rather than driven to completion, by microwave or other suitable energy sources, and may yield substantially pure metal or metal oxide layers. The solution being deposited (5) may have either high concentrations of particulates, such as 60-80 wt. % of dry weight, or low concentrations of particulates, such as ?5 wt. % or ?2 wt. %.Type: GrantFiled: November 24, 1998Date of Patent: February 15, 2005Assignee: SRI InternationalInventor: Subhash Narang
-
Patent number: 6838211Abstract: A pregel composition is added to an organic electrolyte solution of an electrolyte salt in a nonaqueous solvent for causing the solution to gel and form a polymer gel electrolyte. The pregel composition is dehydrated by azeotropic distillation and has a moisture content of not more than 1,000 ppm as determined by Karl Fischer titration. Polymer gel electrolytes prepared with such a pregel composition have a good electrochemical stability, and are thus highly suitable for use in secondary cells and electrical double-layer capacitors.Type: GrantFiled: March 4, 2002Date of Patent: January 4, 2005Assignee: Nisshinbo Industries, Inc.Inventors: Kimiyo Banno, Takaya Sato
-
Patent number: 6838210Abstract: It is an object to provide a high ion conductive solid electrolyte which uses organic and inorganic complex compound having water absorption and water resistance and to provide an electrochemical system using the high ion conductive solid electrolyte. The high ion conductive solid electrolyte is composed of a complex compound including water that has zirconic acid compound and polyvinyl alcohol. An aqueous solution in which zirconium salt or oxyzirconnium salt and polyvinyl alcohol are dissolved is neutralized by alkali. After removing water used as solvent, unnecessary salts are removed from the neutralized solution. The high ion conductive solid electrolyte is obtained which is composed of the complex compound having zirconic acid compound, polyvinyl alcohol, and water. Various electrochemical systems are obtained each of which use the high ion conductive solid electrolyte.Type: GrantFiled: February 6, 2003Date of Patent: January 4, 2005Assignee: Nippon Kodoshi CorporationInventor: Haruo Sawa
-
Publication number: 20040248014Abstract: The electrolyte includes a polysiloxane having one or more backbone silicons linked to a first side chain and one or more backbone silicons linked to a second side chain. The first side chains include a poly(alkylene oxide) moiety and the second side chains include a cyclic carbonate moiety. The electrolyte can be a liquid.Type: ApplicationFiled: March 25, 2004Publication date: December 9, 2004Inventors: Robert C. West, Zhengcheng Zhang, Khalil Amine
-
Patent number: 6821681Abstract: An interchangeable electrolyte contains an additive that promotes interchangeable use between batteries and electroplating cells by limiting dendritic deposition in battery cells and promoting a smooth finish in an electroplating cell, such that fresh or spent electrolyte can be used interchangeably in these type of cells.Type: GrantFiled: August 10, 2001Date of Patent: November 23, 2004Inventor: Johan C. Fitter
-
Publication number: 20040191623Abstract: The present invention provides electrolyte that can suppress reduction of battery efficiencies and capacities with increased cycles of charge/discharge of the battery, a method for producing the same, and a redox flow battery using the same electrolyte. The redox flow battery uses the electrolyte having a NH4 content of not more than 20 ppm and a relation of Si concentration (ppm)×electrolyte quantity (m3)/electrode area (m2) of less than 5 ppm·m3/m2. By limiting a quantity of contaminants in the electrolyte, a clogging of carbon electrodes to cause reduction of the battery performances with increased charge/discharge operations can be suppressed.Type: ApplicationFiled: April 22, 2004Publication date: September 30, 2004Inventors: Michiru Kubata, Hiroyuki Nakaishi, Nobuyuki Tokuda
-
Patent number: 6797436Abstract: A solidifying material for a cell electrolyte solution is a block copolymer, which comprises, as segments A, a polymer non-compatible with the cell electrolyte solution and, as segments B, a polymer compatible with the cell electrolyte solution. The solidifying material absorbs and solidifies the cell electrolyte solution. A smallest unit of the block copolymer is A-B-A. To each of the segments B, at least one group selected from the group consisting of a carboxyl group, an ester group, a hydroxyl group, a sulfonic group, an amino group, a cyclic carbonate group and a polyoxyalkylene group is bonded via a —S— bond or a —C— bond.Type: GrantFiled: November 19, 2001Date of Patent: September 28, 2004Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Minoru Takizawa, Yoshifumi Sugito, Naomi Oguma, Seiji Doi, Sachio Yoshikawa, Michiei Nakamura
-
Patent number: 6794088Abstract: The lithium ion polymer battery having high capacity, capacity retention and cycling life is prepared by gelating a gel polymer electrolyte composition comprising an organic solvent, a lithium salt, and a gelling agent composed of a nitrogen-containing polymer and an epoxy group-containing polymer at room temperature according to the present invention free from heating step at a low cost.Type: GrantFiled: March 11, 2003Date of Patent: September 21, 2004Assignee: SKC LimitedInventors: Kwon-Sun Roh, Jae-Myoung Lee, Jon-Ha Lee
-
Patent number: 6749962Abstract: A lithium battery including an electrode assembly having a cathode, an anode and a separator interposed between the cathode and the anode, a gel-state electrolyte solution having a crosslinking product of prepolymer for forming epoxy resin and amine, a lithium salt and an organic solvent, and a case accommodating the electrode assembly and the electrolyte solution.Type: GrantFiled: May 15, 2001Date of Patent: June 15, 2004Assignee: Samsung SDI Co., Ltd.Inventor: Hyung-gon Noh
-
Publication number: 20040029016Abstract: Disclosed is a polymer electrolyte for a lithium sulfur battery. The electrolyte includes a monomer with a methacrylate group, an initiator, an organic solvent, and a lithium salt.Type: ApplicationFiled: August 6, 2003Publication date: February 12, 2004Inventors: Duck-Chul Hwang, Kyoung-Hee Lee
-
Publication number: 20030104282Abstract: A single step, in situ curing method for making gel polymer lithium ion rechargeable cells and batteries is described. This method used a precursor solution consisting of monomers with multiple functionalities such as multiple acryloyl functionalities, a free-radical generating activator, nonaqueous solvents such as ethylene carbonate and propylene carbonate, and a lithium salt such as LiPF6. The electrodes are prepared by slurry-coating a carbonaceous material such as graphite onto an anode current collector and a lithium transition metal oxide such as LiCoO2 onto a cathode current collector, respectively. The electrodes, together with a highly porous separator, are then soaked with the polymer electrolyte precursor solution and sealed in a cell package under vacuum. The whole cell package is heated to in situ cure the polymer electrolyte precursor.Type: ApplicationFiled: November 15, 2001Publication date: June 5, 2003Inventors: Weibing Xing, Esther S. Takeuchi
-
Patent number: 6573002Abstract: The present invention relates to the removal of protic impurities from battery electrolytes which are suitable for lithium cells by chemical adsorption.Type: GrantFiled: February 23, 2001Date of Patent: June 3, 2003Assignee: Merck Patent GmbHInventors: Michael Jungnitz, Holger Wiederhold
-
Patent number: 6562513Abstract: The present invention provides (1) a thermopolymerizable composition containing a thermopolymerizable compound having (meth)acrylate having a moiety consisting of oxyalkylene, fluorocarbon, oxyfluorocarbon and/or carbonate group within the molecule, an electrolyte salt, an organic polymerization initiator having no benzene ring, and a polymerization retarder having vinyl group within the molecule, (2) a solid electrolyte obtained by heat-curing the composition, (3) a primary battery, a secondary battery and an electric double-layer capacitor each using the solid electrolyte, and processes for manufacturing the same.Type: GrantFiled: September 8, 1999Date of Patent: May 13, 2003Assignee: Showa Denki Kabushiki KaishaInventors: Masataka Takeuchi, Shuichi Naijo
-
Publication number: 20030003359Abstract: A pregel composition is added to an organic electrolyte solution of an electrolyte salt in a nonaqueous solvent for causing the solution to gel and form a polymer gel electrolyte. The pregel composition is dehydrated by azeotropic distillation and has a moisture content of not more than 1,000 ppm as determined by Karl Fischer titration. Polymer gel electrolytes prepared with such a pregel composition have a good electrochemical stability, and are thus highly suitable for use in secondary cells and electrical double-layer capacitors.Type: ApplicationFiled: March 4, 2002Publication date: January 2, 2003Inventors: Kimiyo Banno, Takaya Sato
-
Publication number: 20020172859Abstract: A polymer electrolyte precursor comprising a VdF-HFP copolymer, a lithium and a plasticizer is used for the preparation of a bellcore-type polymer battery having improved impedence, low-temperature characteristics, cycle life and self-discharge properties.Type: ApplicationFiled: May 9, 2002Publication date: November 21, 2002Inventors: Kwon-Sun Roh, Jong-Hyuk Choi, Dong-Joon Ihm, Jon-Ha Lee
-
Publication number: 20020160261Abstract: The invention relates to borate salts and to their use in electro-chemical cells.Type: ApplicationFiled: January 24, 2002Publication date: October 31, 2002Applicant: Merck GmbHInventors: Michael Schmidt, Andreas Kuhner, Klaus-Dieter Franz, Gerd-Volker Roschenthaler, German Bissky, Alexander Kolomeitsev, Alexander Kadyrov
-
Publication number: 20020160272Abstract: A first process for producing a modified electrolyte consistent with the present invention comprises an amine treatment step of contacting a solid polymer electrolyte or a precursor thereof with an amine compound. Further, a first modified electrolyte consistent with the present invention consists essentially of what is obtained in such a process. A second process for producing the modified electrolyte consistent with the present invention includes a step of introducing, to a solid polymer compound having a functional group A, a first modifying agent comprising at least one functional group B capable of reacting with the functional group A thereby forming a first intermediate acid group; and the step also includes reacting the functional group A and the functional group B.Type: ApplicationFiled: February 22, 2002Publication date: October 31, 2002Applicant: KABUSHIKI KAISHA TOYOTA CHUOInventors: Hiromitsu Tanaka, Arimitsu Usuki, Masaya Kawasumi, Yu Morimoto, Naoki Hasegawa, Mitsuru Nakano, Atsushi Kamiya
-
Publication number: 20020142207Abstract: A solid polymer electrolyte material made of a copolymer comprising a repeating unit based on a fluoromonomer A which gives a polymer having an alicyclic structure in its main chain by radical polymerization, and a repeating unit based on a fluoromonomer B of the following formula (1):Type: ApplicationFiled: December 26, 2001Publication date: October 3, 2002Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Atsushi Watakabe, Takeshi Eriguchi, Toshihiro Tanuma, Yasuhiro Kunisa
-
Publication number: 20020136958Abstract: Ionic gel polymer electrolytes for rechargeable polymer batteries. In preferred forms, a gel polymer precursor electrolyte is formed by dissolving a gelling agent into organic liquid electrolytes, and then gelling the precursor in situ at elevated temperature after pouring it into a battery case that contains a cathode, an anode and a separator. The gel polymer electrolytes exhibit excellent ionic conductivity of up to about 10−2 S/cm and voltage stability for lithium rechargeable batteries.Type: ApplicationFiled: January 17, 2001Publication date: September 26, 2002Inventors: Chi-Kyun Park, Zhiwei Zhang, Lu Ying Sun, Chul Chai
-
Patent number: 6444359Abstract: In a secondary battery wherein a positive electrode active material layer 2 and a negative electrode active material layer 3 are allowed to face each other via a liquid electrolyte solution 1, there is used, as the electrolyte solution 1, a basic solvent containing a halogenated polyolefin and an aliphatic polyolefin dissolved therein.Type: GrantFiled: December 14, 1999Date of Patent: September 3, 2002Assignees: NEC Corporation, NEC Moli Energy CorporationInventors: Masaharu Satoh, Hiroshi Yageta, Yutaka Bannai, Masato Shirakata, Norihide Ohyama, Tomokazu Kumeuchi
-
Patent number: 6384321Abstract: The present invention provides an electrolyte composition, comprising an electrolyte containing at least one kind of an imidazolium salt selected from the group consisting of 1-methyl-3-propyl imidazolium iodide, 1-methyl-3-isopropyl imidazolium iodide, 1-methyl-3-butyl imidazolium iodide, 1-methyl-3-isobutyl imidazolium iodide and 1-methyl-3-sec-butyl imidazolium iodide, a halogen-containing compound dissolved in the electrolyte, and a compound dissolved in the electrolyte and containing at least one element selected from the group consisting of N, P and S, the compound being capable of forming an onium salt together with the halogen-containing compound.Type: GrantFiled: September 22, 2000Date of Patent: May 7, 2002Assignee: Kabushiki Kaisha ToshibaInventors: Satoshi Mikoshiba, Hiroyasu Sumino, Maki Yonetsu, Shuji Hayase
-
Publication number: 20020051911Abstract: It is an object of the present invention to provide a curable composition capable of giving a polymer electrolyte showing a high level of ionic conductivity and excellent in mechanical strength as well.Type: ApplicationFiled: May 11, 2001Publication date: May 2, 2002Applicant: Kaneka CorporationInventor: Kenji Okada
-
Publication number: 20020018938Abstract: The present invention provides a solid polymer electrolyte; a polymerizable composition having low viscosity and excellent processability for obtaining the solid polymer electrolyte; and a polymerizable compound having low viscosity, and good polymerizability and stability for use in the polymerizable composition. The present invention also provides primary and secondary batteries capable of working with high capacity and current; an electric double-layer capacitor ensuring high output voltage, large takeout current, and good processability; and an electrochromic device favored with high response speed. Each thereof use the solid polymer electrolyte of the present invention and are ensured with long life, excellent safety free of liquid leakage, high reliability and production at a low cost.Type: ApplicationFiled: July 10, 2001Publication date: February 14, 2002Applicant: SHOWA DENKO KABUSHIKI KAISHAInventors: Masataka Takeuchi, Shuichi Naijo, Ayako Nishioka
-
Patent number: 6329103Abstract: A solid electrolyte is disclosed, which comprises a crosslinked product of an alkylene oxide polymer having a polymerizable double bond at the terminal and/or in the side chain, and an electrolytic salt. In this, the alkylene oxide polymer is thermally crosslinked in the presence of an organic peroxide initiator having an activation energy of at most 35 Kcal/mol and having a half-value period of 10 hours at a temperature not higher than 50° C.Type: GrantFiled: July 15, 1999Date of Patent: December 11, 2001Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.Inventors: Eriko Ishiko, Michiyuki Kono
-
Patent number: 6306540Abstract: The present invention relates to an electrolytic solution excellent in stability, and also relates to a battery excellent in battery performance and having an outer structure having light weight. The electrolytic solution contains a supporting electrolyte and a gas formation inhibitor in the solvent. The gas formation inhibitor contains a decomposition product of the supporting electrolyte with formation of a gas in the solvent. It functions as controlling to solution equilibrium in the electrolytic solution participating in decomposition reaction of the supporting electrolyte. A battery is obtained by filling the electrolytic solution between a positive electrode and a negative electrode.Type: GrantFiled: August 22, 2000Date of Patent: October 23, 2001Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Osamu Hiroi, Kouji Hamano, Yasuhiro Yoshida, Shoji Yoshioka, Hisashi Shiota, Jun Aragane, Shigeru Aihara, Daigo Takemura, Takashi Nishimura, Makiko Kise, Hiroaki Urushibata, Hiroshi Adachi
-
Patent number: 6306546Abstract: A new class of low flammability cosolvents comprising saturated C1-C8 alkyl (meth)acrylate oligomers having a molecular weight in the range of from about 160 to 1000 g/mol are disclosed for use in nonaqueous electrolytes for electrochemical cells. A novel process for preparing saturated meth(acrylic) oligomeric electrolyte cosolvents is also disclosed. Secondary electrochemical cells employing an anode, a cathode, and a non-aqueous electrolyte solution comprising these new cosolvents are also disclosed.Type: GrantFiled: October 22, 1999Date of Patent: October 23, 2001Assignee: Rohm and Haas CompanyInventors: Edward Ewart LaFleur, Jian Huang
-
Publication number: 20010026890Abstract: A polymerizable molten salt monomer represented by the following general formula (I): 1Type: ApplicationFiled: January 22, 2001Publication date: October 4, 2001Inventors: Michio Ono, Chang-yi Qian
-
Publication number: 20010024756Abstract: A polymer electrolyte battery having a high discharge capacity, a high mechanical strength, and a high heat resistance is provided.Type: ApplicationFiled: March 23, 2001Publication date: September 27, 2001Applicant: Sanyo Electric Co., Ltd.Inventor: Mikiya Yamasaki
-
Publication number: 20010023041Abstract: The present invention provides a chemical battery, comprising a positive electrode, a negative electrode, and a gel electrolyte containing a crosslinked body and an electrolyte, the crosslinked body being obtained by crosslinking at least one compound selected from the group consisting of an epoxy compound having an alicyclic structure and at least one epoxy group in a single molecule and an alicyclic epoxy resin.Type: ApplicationFiled: December 27, 2000Publication date: September 20, 2001Inventors: Shuzi Hayase, Norio Takami, Hirohisa Miyamoto, Satoshi Mikoshiba