Salt Solute Patents (Class 361/505)
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Method for manufacturing lithium ion capacitor and lithium ion capacitor manufactured using the same
Patent number: 8379368Abstract: A method for manufacturing a lithium ion capacitor, and a lithium ion capacitor manufactured using the method are provided. The method for manufacturing a lithium ion capacitor includes: disposing a lithium metal on a capacitor cell including a cathode, a separation film, and an anode; impregnating the capacitor cell with electrolyte including a lithium salt; changing the cathode and the anode to allow lithium ions within the electrolyte to be occluded into the anode; performing a primary reaction in which the cathode and the lithium metal are short-circuited to emit anions from the cathode and lithium ions from the lithium metal and a secondary reaction that the lithium ions emitted from the lithium metal are occluded into the cathode; and recharging the cathode and the anode to allow the lithium ions, which have been occluded into the cathode and the lithium ions within the electrolyte, to be occluded into the anode.Type: GrantFiled: December 2, 2010Date of Patent: February 19, 2013Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Hong Seok Min, Bae Kyun Kim, Hyun Chul Jung, Dong Hyeok Choi, Hak Kwan Kim -
Patent number: 8373966Abstract: A structural body which includes a first dielectric layer formed on a first substrate and including first conductive particles, each surface of the first conductive particles being entirely covered with a first dielectric film; and a second dielectric layer formed on the first dielectric layer wherein a volume ratio of a dielectric in the second dielectric layer is higher than a volume ratio of a dielectric in the first dielectric layer.Type: GrantFiled: October 8, 2009Date of Patent: February 12, 2013Assignee: Fujitsu LimitedInventor: Yoshihiko Imanaka
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Patent number: 8369065Abstract: An electric double layer capacitor (EDLC) includes an electric double layer cell and first and second external electrodes. The electric double layer cell includes a separator and at least one first polarizable electrode and at least one second polarizable electrode. The first and second external electrodes are formed at first and second side surfaces of the electric double layer cell facing each other, respectively. The first polarizable electrode includes a first current collection layer and a first active material layer formed on either surface of the first current collection layer facing the separator and the second polarizable electrode includes a second current collection layer and a second active material layer formed on either surface of the second current collection layer facing the separator.Type: GrantFiled: December 30, 2009Date of Patent: February 5, 2013Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Yeong Su Cho, Kang Heon Hur, Kwan Hyeong Kim, Chang Ryul Jung, Sang Kyun Lee, Sung Ho Lee, Dong Sup Park
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Publication number: 20120328960Abstract: A nonaqueous solvent having excellent reduction resistance, which can be applied to an electrolyte solution, is provided. Further, a nonaqueous solvent which can be used in a wide temperature range and applied to an electrolyte solution is provided. Furthermore, a high-performance power storage device is provided. A nonaqueous solvent containing at least an ionic liquid including an alicyclic quaternary ammonium cation having one or more substituents and a counter anion to the alicyclic quaternary ammonium cation, and a freezing-point depressant is provided. A power storage device including the nonaqueous solvent for an electrolyte solution is also provided.Type: ApplicationFiled: June 20, 2012Publication date: December 27, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Kyosuke ITO, Toru Itakura
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Patent number: 8331080Abstract: There are provided an electrolyte for a lithium ion capacitor and a lithium ion capacitor including the same. The electrolyte for a lithium ion capacitor according to the present invention includes: a lithium salt; and a mixing solvent including i) two or more compounds selected from a group consisting of cyclic carbonate compounds, ii) one or more compounds selected from a group consisting of linear carbonate compounds represented by a specified Formula, and iii) one or more compound selected from a group consisting of propionate compound represented by a specified Formula.Type: GrantFiled: November 9, 2010Date of Patent: December 11, 2012Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Sang Kyun Lee, Dong Hyeok Choi, Hyun Chul Jung, Bae Kyun Kim
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Publication number: 20120293914Abstract: Disclosed is an accumulator device that can prevent aluminum forming an outer container from forming an alloy with lithium even when fine lithium metal powder is isolated from a lithium ion supply source to adhere to the outer container. The accumulator device has an outer container at least a part of which is formed of aluminum or an aluminum alloy, a positive electrode and a negative electrode that are arranged in the outer container, and an electrolytic solution injected into the outer container and containing a lithium salt, wherein the negative electrode and/or the positive electrode is doped with a lithium ion by electrochemical contact of a lithium ion supply source arranged in the outer container with the negative electrode and/or the positive electrode, and the portion formed of aluminum or the aluminum alloy in the outer container is set to a positive potential.Type: ApplicationFiled: December 3, 2010Publication date: November 22, 2012Applicant: JM Energy CorporationInventors: Kenji Nansaka, Nobuo Ando
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Publication number: 20120293916Abstract: Disclosed herein are an electrolyte solution composition and an energy storage device including the same. The electrolyte solution may include: a solvent including one or more compound selected from one or more cyclic carbonate compound; and additives including one or more selected from a group consisting of catechol carbonate (CC), fluoro ethylene carbonate (FEC), propane sulton (PS), and propene sulton (PST).Type: ApplicationFiled: April 26, 2012Publication date: November 22, 2012Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Sang Kyun LEE, Hong Seok Min, Bae Kyun Kim, Ji Sung Cho
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Publication number: 20120262845Abstract: The present invention relates to a magnesium capacitor including: a cathode including a carbon material as an active material; an anode including magnesium and its alloys as active materials; and an electrolyte. Since the magnesium capacitor in accordance with the present invention can use magnesium metal and its alloys as anode materials, a separate pre-doping process of magnesium metal is not needed. Further, it is possible to provide a magnesium capacitor that can be charged and discharged in a predetermined range as well as overcome reduction in stability due to leakage of an electrolyte occurred when using lithium ions as an anode material in the prior art.Type: ApplicationFiled: January 24, 2012Publication date: October 18, 2012Inventors: Sang Kyun LEE, Ji Sung CHO, Bae Kyun KIM
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Patent number: 8279581Abstract: An electrolytic solution for an electrolytic capacitor includes a solvent and an electrolyte dissolved in the solvent. This electrolyte includes at least one of a carboxylic acid and a salt of the carboxylic acid. The carboxylic acid has a carboxyl group and at least one or more of substituents bonded to each terminal carbon of a straight main chain. The substituent bonded to the each terminal carbon of the main chain is hydrophilic, and/or a hydrophilic substituent is bonded to at least one of carbons other than the both terminal carbons of the main chain.Type: GrantFiled: December 3, 2008Date of Patent: October 2, 2012Assignee: Panasonic CorporationInventor: Ryoko Takaoka
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Publication number: 20120234381Abstract: A dye-sensitized solar cell (DSC) is provided, which has an elevated voltage and thus an improved performance achieved with an electrolyte formed by mixing multiple redox electrolytes of an electrolyte solution. The DSC includes: a first substrate 20; a first electrode 10, disposed on the first substrate 20; a porous semiconductor layer 12, disposed on the first electrode 10, and containing semiconductor particles 2 and dye molecules 4; an electrolyte solution 14, formed by dissolving a redox electrolyte in a solvent, in contact with the porous semiconductor layer 12; a second electrode 18, in contact with the electrolyte solution 14; a second substrate 22, disposed on the second electrode 18; and a sealant 16, disposed between the first substrate 20 and the second substrate 22, for sealing the electrolyte solution 14. The redox electrolyte includes an electrolyte formed by mixing multiple redox electrolytes.Type: ApplicationFiled: March 15, 2012Publication date: September 20, 2012Applicant: ROHM CO., LTD.Inventors: SOICHIRO ARIMURA, HIROKI TSUJIMURA, SHUNSUKE FURUSE
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Patent number: 8223473Abstract: An electrolytic capacitor that contains an anodically oxidized porous anode, cathode, and an electrolyte that contains an alkali metal salt and ionically conductive polymer is provided. The alkali metal salt forms a complex with the ionically conductive polymer and thereby improves its ionic conductivity, particularly at higher temperatures. The electrolyte also contains an organic solvent that reduces the viscosity of the electrolyte and helps lower the potential barrier to metal ion transport within the electrolyte to improve conductivity. By selectively controlling the relative amount of each of these components, the present inventors have discovered that a highly ionically conductive electrolyte may be formed that is also in the form of a viscous liquid. The liquid nature of the electrolyte enables it to more readily enter the pores of the anode via capillary forces and improve specific capacitance. Further, although a liquid, its viscous nature may inhibit the likelihood of leakage.Type: GrantFiled: March 23, 2009Date of Patent: July 17, 2012Assignee: AVX CorporationInventors: Dirk H. Dreissig, John Galvagni
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Publication number: 20120177976Abstract: Disclosed or provided are high melt temperature microporous Lithium-ion rechargeable battery separators, shutdown high melt temperature battery separators, battery separators, membranes, composites, and the like that preferably prevent contact between the anode and cathode when the battery is maintained at elevated temperatures for a period of time, methods of making, testing and/or using such separators, membranes, composites, and the like, and/or batteries, Lithium-ion rechargeable batteries, and the like including one or more such separators, membranes, composites, and the like.Type: ApplicationFiled: July 29, 2011Publication date: July 12, 2012Inventors: C. Glen Wensley, Carlos R. Negrete, Jill V. Watson
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Publication number: 20120177986Abstract: An electrochemical cell includes a positive electrode, a negative electrode, and an electrolyte solution. The positive electrode and/or the negative electrode includes a penetrating portion that penetrates the electrodes in the thickness direction. Further, an electrochemical capacitor includes a positive electrode, a negative electrode, and an electrolyte solution. In a plane of projection in which a region carrying a negative electrode active material of the negative electrode is projected onto a region carrying a positive electrode active material of the positive electrode along a opposed direction, the ratio of an area carrying the positive electrode active material to an area carrying the negative electrode active material is less than 1.Type: ApplicationFiled: September 17, 2010Publication date: July 12, 2012Applicant: DAIHATSU MOTOR CO., LTD.Inventors: Taira Aida, Ichiro Murayama
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Publication number: 20120177991Abstract: The invention relates to an electrochemical device having a positive electrode and a negative electrode, wherein at least either of the positive electrode and the negative electrode has a current collector and an electrode layer having an electrode active material and a binder containing a polymer having a constituent unit derived from an amide group-containing monomer and a constituent unit derived from (meth)acrylic acid, such that: (i) the polymer has a swelling rate of 120 to 600% when immersed for 24 hours at 80° C. in a solution containing ethylene carbonate, diethyl carbonate, ethyl methyl carbonate and lithium hexafluorophosphate; or (ii) the polymer has a swelling rate of 110 to 300% when immersed for 24 hours at 80° C. in a solution containing propylene carbonate and methyl triethyl ammonium tetrafluoroborate.Type: ApplicationFiled: August 6, 2010Publication date: July 12, 2012Applicant: JSR CorporationInventors: Takeshi Mogi, Tatsuaki Honda, Teruaki Tezuka
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Patent number: 8216445Abstract: A nanoporous insulating oxide deionization device, method of manufacture and method of use thereof for deionizing a water supply (such as a hard water supply), for desalinating a salt water supply, and for treating a bacteria-containing water supply. The device contains two composite electrodes each constructed from a conductive backing electrode and a composite oxide layer being an insulating oxide or a non-insulating oxide and an intermediate porous layer. The composite layer being substantially free of mixed oxidation states and nanoporous and having a median pore diameter of 0.5-500 nanometers and average surface area of 300-600 m2/g. The composite layer made from a stable sol-gel suspension containing particles of the insulating oxide, the median primary particle diameter being 1-50 nanometers.Type: GrantFiled: October 31, 2007Date of Patent: July 10, 2012Assignee: Wisconsin Alumni Research FoundationInventors: Marc A. Anderson, Kevin C. Leonard
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Publication number: 20120107726Abstract: According to this invention, a process for producing fluorine containing polymer to obtain composite polymer electrolyte composition having excellent ion transport number, that is, ion transfer coefficient, for example, excellent transport number of lithium ion, is provided. A process for producing fluorine containing polymer comprising graft-polymerizing a molten salt monomer having a polymerizable functional group and a quaternary ammonium salt structure having a quaternary ammonium cation and anion, with a polymer having the following unit; —(CR1R2—CFX)— X means halogen atom except fluorine atom, R1 and R2 mean hydrogen or fluorine atom, each is same or different atom.Type: ApplicationFiled: March 30, 2010Publication date: May 3, 2012Applicant: PIOTREK CO., LTD.Inventors: Naoya Ogata, Fumito Yamai, Tsutomu Sada
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Publication number: 20120099246Abstract: Disclosed herein is a lithium ion capacitor, including: a positive electrode including a positive electrode activated material; a negative electrode including a negative electrode activated material; and an electrolyte disposed between the positive and negative electrodes, wherein the positive electrode activated material includes a mixture of lithium iron phosphate (LiFePO4) and activated carbon, thereby having improved energy density and capacitance and a long life span.Type: ApplicationFiled: August 29, 2011Publication date: April 26, 2012Inventors: Ji Sung Cho, Sang Kyun Lee, Bae Kyun Kim
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Publication number: 20120099245Abstract: Disclosed herein are a lithium ion capacitor (LIC) including: a positive electrode including a positive electrode activated material; a negative electrode including a negative electrode activated material; and an electrolyte solution disposed between the positive electrode and the negative electrode, wherein the positive electrode activated material includes graphite, thereby making it possible to considerably improve capacitance of a lithium ion capacitor as compared to a lithium ion capacitor according to the related art, and a manufacturing method of the lithium ion capacitor.Type: ApplicationFiled: August 22, 2011Publication date: April 26, 2012Inventors: Ji Sung CHO, Sang Kyun Lee, Bae Kyun Kim
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Patent number: 8159815Abstract: Disclosed is an electrochemical capacitor comprising a positive electrode exhibiting an irreversible capacity for extending the potential range during a charge/discharge cycle, a negative electrode composed of a material which is capable of reversibly adsorbing/desorbing lithium ions, and an electrolyte solution composed of an organic solvent containing lithium ions.Type: GrantFiled: September 14, 2007Date of Patent: April 17, 2012Assignee: Daihatsu Motor Co., Ltd.Inventors: Taira Aida, Keisuke Yagi, Koji Yamada, Ichiro Murayama
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Publication number: 20120088160Abstract: The present technology relates to stabilizing additives and electrolytes containing the same for use in electrochemical devices such as lithium ion batteries and capacitors. The stabilizing additives include triazinane triones and bicyclic compounds comprising succinic anhydride, such as compounds of Formulas I and II described herein.Type: ApplicationFiled: October 7, 2010Publication date: April 12, 2012Inventors: Lu Zhang, Zhengcheng Zhang, Khalil Amine
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Publication number: 20120063061Abstract: Disclosed herein are an electrolyte solution composition and an energy storage device including the same. The electrolyte solution composition contains: a lithium salt including lithium ions; and a solvent made of a material selected from a group consisting of at least one cyclic carbonate compound and propionate compound. The electrolyte solution composition may balancedly maintain characteristics at a room temperature and a low temperature and be used for pre-doping lithium ions, thereby making it possible to improve pre-doping efficiency.Type: ApplicationFiled: September 6, 2011Publication date: March 15, 2012Applicant: Samsung Electro-Mechanics Co., Ltd.Inventors: Sang Kyun Lee, Bae Kyun Kim, Ji Sung Cho
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Publication number: 20120063062Abstract: Disclosed herein are an electrolyte solution composition and an energy storage device including the same. The electrolyte solution composition contains: a lithium salt including lithium ions; and a solvent made of a material selected from a group consisting of at least one cyclic carbonate compound. The electrolyte solution composition may balancedly maintain characteristics at a room temperature and a high temperature and be used for pre-doping lithium ions, thereby making it possible to improve pre-doping efficiency.Type: ApplicationFiled: September 6, 2011Publication date: March 15, 2012Applicant: Samsung Electro-Mechanics Co., Ltd.Inventors: Sang Kyun Lee, Bae Kyun Kim, Ji Sung Cho
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Publication number: 20120050950Abstract: Provided is a lithium ion capacitor. The lithium ion capacitor includes cathodes and anodes alternately disposed with the separators interposed therebetween. The cathode comprises a cathode collector and a cathode active material layer made of a first cathode active material layer disposed on at least one surface of the cathode collector and made of carbon/lithium metal oxide and a second cathode active material made of charcoal.Type: ApplicationFiled: August 25, 2011Publication date: March 1, 2012Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Hak Kwan Kim, Bae Kyun Kim, Hong Seok Min, Dong Hyeok Choi
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Publication number: 20120052377Abstract: Disclosed herein is an energy storage device. The energy storage device according to an exemplary embodiment of the present invention includes a case providing an internal space with a first space and a second space; an electrolyte solution filled in the internal space of the case; a positive electrode structure disposed on an interface between the first space and the second space and having a cathode active material layer including metal oxide composite; a first negative electrode disposed in the first space and having a first anode active material layer including graphite; and a second negative electrode disposed in the second space and having a second anode active material layer including activated carbon.Type: ApplicationFiled: December 7, 2010Publication date: March 1, 2012Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jun Hee Bae, Chang Ryul Jung, Bae Kyun Kim, Yeong Su Cho
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Publication number: 20120050949Abstract: Provided are a lithium ion capacitor and a method of manufacturing the same. The lithium ion capacitor includes an anode current collector, a first anode active material layer disposed on at least one surface of the anode current collector, and a second anode active material layer disposed on the first anode active material layer and formed of a lithium oxide layer having a spinel structure.Type: ApplicationFiled: August 25, 2011Publication date: March 1, 2012Inventors: Hak Kwan Kim, Bae Kyun Kim, Dong Hyeok Choi, Hyun Chul Jung
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Publication number: 20120026645Abstract: Disclosed are an aluminum electrolytic capacitor having low impedance properties and a long service life, and an electrolytic solution which enables to give such capacitor. The electrolytic solution contains a solvent containing water, a phosphorus oxoacid ion-generating compound which can generate a phosphorus oxoacid ion in an aqueous solution, and a chelating agent which can coordinate with aluminum to form an aqueous aluminum chelate complex. The electrolytic solution further contains a compound selected from the group consisting of azelaic acid and an azelaic acid salt, and a compound selected from the group consisting of formic acid, a formic acid salt, adipic acid, an adipic acid salt, glutaric acid and a glutaric acid salt. The content of azelaic acid and/or the azelaic acid salt is at least 0.03 moles per kg of the solvent.Type: ApplicationFiled: July 11, 2009Publication date: February 2, 2012Inventors: Masao Sakakura, Junichi Kawakami, Kazuma Okura, Shingo Takeuchi, Masashi Ozama, Kenji Tamamitsu
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Patent number: 8098480Abstract: A lithium ion capacitor includes a positive electrode made of a material capable of reversibly carrying either one or both of a lithium ion and an anion, a negative electrode made of a material capable of reversibly carrying a lithium ion, and an electrolytic solution made of a non-protonic organic solvent electrolytic solution of a lithium salt. A negative electrode active material is non-graphitizable carbon having a ratio of number of hydrogen atoms to number of carbon atoms of zero or more and less than 0.05. The lithium ion is doped in advance to either one or both of the negative electrode and the positive electrode so that a negative electrode potential when a cell is discharged to a voltage one half a charging voltage of the cell is 0.15 V or less relative to a lithium ion potential.Type: GrantFiled: October 17, 2006Date of Patent: January 17, 2012Assignee: Fuji Jukogyo Kabushiki KaishaInventors: Nobuo Ando, Kenji Kojima, Shinichi Tasaki, Hiromoto Taguchi, Kohei Matsui, Atsuro Shirakami, Yukinori Hato
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Method for manufacturing lithium ion capacitor and lithium ion capacitor manufactured using the same
Publication number: 20120008254Abstract: A method for manufacturing a lithium ion capacitor, and a lithium ion capacitor manufactured using the method are provided. The method for manufacturing a lithium ion capacitor includes: disposing a lithium metal on a capacitor cell including a cathode, a separation film, and an anode; impregnating the capacitor cell with electrolyte including a lithium salt; changing the cathode and the anode to allow lithium ions within the electrolyte to be occluded into the anode; performing a primary reaction in which the cathode and the lithium metal are short-circuited to emit anions from the cathode and lithium ions from the lithium metal and a secondary reaction that the lithium ions emitted from the lithium metal are occluded into the cathode; and recharging the cathode and the anode to allow the lithium ions, which have been occluded into the cathode and the lithium ions within the electrolyte, to be occluded into the anode.Type: ApplicationFiled: December 2, 2010Publication date: January 12, 2012Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Hong Seok Min, Bae Kyun Kim, Hyun Chul Jung, Dong Hyeok Choi, Hak Kwan Kim -
Publication number: 20120002349Abstract: One object is to provide a power storage device including an electrolyte using a room-temperature ionic liquid which includes a univalent anion and a cyclic quaternary ammonium cation having excellent reduction resistance. Another object is to provide a high-performance power storage device. A room-temperature ionic liquid which includes a cyclic quaternary ammonium cation represented by a general formula (G1) below is used for an electrolyte of a power storage device. In the general formula (G1), one or two of R1 to R5 are any of an alkyl group having 1 to 20 carbon atoms, a methoxy group, a methoxymethyl group, and a methoxyethyl group. The other three or four of R1 to R5 are hydrogen atoms. A? is a univalent imide anion, a univalent methide anion, a perfluoroalkyl sulfonic acid anion, tetrafluoroborate (BF4?), or hexafluorophosphate (PF6?).Type: ApplicationFiled: June 23, 2011Publication date: January 5, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Kyosuke ITO, Toru ITAKURA
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Publication number: 20120002348Abstract: A thin energy storage device having high capacity is obtained. An energy storage device having high output is obtained. A current collector and an active material layer are formed in the same manufacturing step. The number of manufacturing steps of an energy storage device is reduced. The manufacturing cost of an energy storage device is suppressed. One embodiment of the present invention relates to an electric double layer capacitor which includes a pair of electrodes including a porous metal material, and an electrolyte provided between the pair of electrodes; or a lithium ion capacitor which includes a positive electrode that is a porous metal body functioning as a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte provided between the positive electrode and the negative electrode.Type: ApplicationFiled: June 23, 2011Publication date: January 5, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Junpei MOMO, Yumiko SAITO, Rie MATSUBARA, Hiroatsu TODORIKI
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Publication number: 20110304952Abstract: There are provided an electrolyte for a lithium ion capacitor and a lithium ion capacitor including the same. The electrolyte for a lithium ion capacitor according to the present invention includes: a lithium salt; and a mixing solvent including i) two or more compounds selected from a group consisting of cyclic carbonate compounds, ii) one or more compounds selected from a group consisting of linear carbonate compounds represented by a specified Formula, and iii) one or more compound selected from a group consisting of propionate compound represented by a specified Formula.Type: ApplicationFiled: November 9, 2010Publication date: December 15, 2011Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Sang Kyun Lee, Dong Hyeok Choi, Hyun Chul Jung, Bae Kyun Kim
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Publication number: 20110299224Abstract: The present invention provides an electrolyte highly reliable in charge and discharge in a high voltage condition, and an electrochemical capacitor using the same. The electrolyte of the present invention includes a solvent, an electrolyte salt having an anion having a perfluoro alkyl group represented by a following composition formula, and an acid inducing substance having a fluorine atom for an anion, characterized in that the weight ratio of the acid inducing substance is in a range of 0.0001 to 2.0 wt %: MX+[Q(Rf)yFz]X? (wherein Q is a group 13 or group 15 element in the periodic table, Rf is a perfluoro alkyl group (CnF2n+1), n is a natural number, 1?y<6, 1?z<6, MX+ is a cation of Xth valence, and X is a natural number from 1 to 3).Type: ApplicationFiled: February 15, 2010Publication date: December 8, 2011Inventors: Shotaro Doi, Atsuro Shirakami
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Publication number: 20110294003Abstract: Compounds may have general Formula I, II, or III: where R1, R2, R3, and R4 are independently H, F, Cl, Br, CN, NO2, a alkyl group, a haloalkyl group, a phosphate group, a polyether group; or R1 and R2, or R3 and R4, or R2 and R3 (in the case of Formula II) may join together to form a fused ring on the benzene ring; and X and Z are independently a group of Formula A: where R5 and R6 and R7 are independently H, F, Cl, Br, CN, NO2, a alkyl group, a haloalkyl group, a phosphate group, or a polyether group; R7 is H, F, Cl, Br, CN, NO2, a alkyl group, a haloalkyl group, a phosphate group, or a polyether group; n is an integer from 1 to 8; and m is an integer from 1 to 13. Such compounds may be used as redox shuttles in electrolytes for use in electrochemical cells, batteries and electronic devices.Type: ApplicationFiled: May 24, 2011Publication date: December 1, 2011Inventors: Zhengcheng Zhang, Lu Zhang, Khalil Amine
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Publication number: 20110294017Abstract: Compounds may have general Formula IVA or IVB. where, R8, R9, R10, and R11 are each independently selected from H, F, Cl, Br, CN, NO2, alkyl, haloalkyl, and alkoxy groups; X and Y are each independently O, S, N, or P; and Z? is a linkage between X and Y. Such compounds may be used as redox shuttles in electrolytes for use in electrochemical cells, batteries and electronic devices.Type: ApplicationFiled: May 23, 2011Publication date: December 1, 2011Inventors: Wei Weng, Zhengcheng Zhang, Khalil Amine
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Patent number: 8057937Abstract: Disclosed herein is a hybrid battery using an electrochemically stable electrolyte composition and electrodes suitable for use in the electrolyte composition. The hybrid battery is non-toxic and highly stable, and has improved high-current charge/discharge characteristics. The hybrid battery comprises an electrode unit consisting of an anode and a cathode, a separator for electrically separating the anode and the cathode, and an electrolyte filled in a space between the anode and the cathode so as to form an electric double layer on surfaces of the anode and cathode when a voltage is applied wherein the electrolyte contains a mixture of a lithium salt, an ammonium salt and a pyrrolidinium salt as solutes in a carbonate-based solvent so that the solute mixture has a concentration of 1.0-2.5 mol/L.Type: GrantFiled: June 14, 2006Date of Patent: November 15, 2011Assignee: Vina Technology Co., Ltd.Inventors: Do Kyong Sung, Jun Tae Jung
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Publication number: 20110256438Abstract: The invention has as its object the provision of a wound-type accumulator, by which arrangement of a lithium ion source is simplified, and the time required to inject an aprotic organic solvent electrolyte solution and the time required for predoping are shortened, and thus the assembly can be completed in a short period of time to achieve high productivity.Type: ApplicationFiled: December 14, 2009Publication date: October 20, 2011Applicant: JM ENERGY CORPORATIONInventors: Makoto Taguchi, Yuu Watanabe, Nobuo Ando, Naoshi Yasuda, Chisato Marumo
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Patent number: 8007680Abstract: The present invention has for its object to provide an electrolyte solution which can dramatically suppress the time degradation in performance of an electrochemical device, especially an electrochemical capacitor. The present invention relates to an electrolyte solution for electrochemical device which comprises an imidazolium salt (A) represented by the general formula (1) as a main component, wherein the content of the imidazolium salt (B) represented by the general formula (2) is not more than 15% by weight to the total weight of the imidazolium salt (A) and imidazolium salt (B); (in the formula, R1, R2 and R3 may be the same or different and each represents an alkyl group containing 1 to 3 carbon atoms; R4 and R5 may be the same or different and each represents an hydrogen atom or an alkyl group containing 1 to 3 carbon atoms; and X? represents a counter anion) (in the formula, R1, R3, R4, R5 and X? are the same as the definition for the general formula (1)).Type: GrantFiled: September 28, 2006Date of Patent: August 30, 2011Assignees: Sanyo Chemical Industries, Ltd., Panasonic CorporationInventors: Koji Fujioka, Yoshihiko Akazawa, Yasuyuki Ito, Satomi Onishi
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Patent number: 7998360Abstract: Provided is an electrolyte containing tetrafluoroaluminate ions, which is advantageous in that the electrolyte can be prevented from leaking from both the cathode and the anode in an electrolytic capacitor.Type: GrantFiled: September 29, 2006Date of Patent: August 16, 2011Assignees: Mitsubishi Chemical Corporation, Nippon Chemi-Con CorporationInventors: Masayuki Takeda, Hiroo Miyauchi, Masashi Ozawa
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Patent number: 7948738Abstract: The present invention provides an electrode material for an electric double layer capacitor which can provide an electric double layer capacitor having a low internal resistance and a large capacitance, a process for producing the same, and an electrode for an electric double layer capacitor and an electric double layer capacitor using the same. The electrode material of the present invention is characterized by comprising a carbonaceous material and an activated carbon, the carbonaceous material obtained by thermal-treating or activating a fullerene-containing soot or an extracted residue obtained by substantially extracting at least a part of fullerene from a fullerene-containing soot using a solvent. The electrode for an electric double layer capacitor and the electric double layer capacitor of the present invention is characterized by using the electrode material.Type: GrantFiled: April 6, 2006Date of Patent: May 24, 2011Assignee: Panasonic CorporationInventors: Hideki Shimamoto, Chiho Yamada, Kouhei Okuyama, Hisatsugu Izuhara, Mitsumasa Hijiriyama
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Publication number: 20110100328Abstract: A cell for use in an electrolysis unit includes a back wall, a side wall extending upwardly from and around a periphery of the back wall to define an inner region of the cell, an electrode disposed on the back wall within the inner region to divide at least a portion of the inner region into first and second regions is disclosed.Type: ApplicationFiled: October 21, 2010Publication date: May 5, 2011Inventor: Buddy Ray Paul
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Patent number: 7935155Abstract: A method of manufacturing an electrode product where a compressible and deformable layer is densified and laminated to a layer of a material that is relatively resistant to stretching. The densification and bonding take place in a single step. A method as used in fabrication of electrodes, for example, electrodes for double layer capacitors, a deformable and compressible active electrode film is manufactured from activated carbon, conductive carbon, and a polymer. The electrode film may be bonded directly to a collector. Alternatively, a collector may be coated with a wet adhesive layer. The adhesive layer is subsequently dried onto the foil. The dried adhesive and foil combination may be manufactured as a product for later sale or use, and may be stored as such on a storage roll or other storage device. The active electrode film is overlayed on the metal foil, and processed in a laminating device, such as a calender. Lamination both densifies the active electrode film and bonds the film to the metal foil.Type: GrantFiled: May 16, 2008Date of Patent: May 3, 2011Assignee: Maxwell Technologies, Inc.Inventors: Porter Mitchell, Xiaomei Xi, Linda Zhong
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Publication number: 20100302709Abstract: A wet electrolytic capacitor comprising a porous anode body that contains a dielectric layer formed by anodic oxidation; a cathode comprising a metal substrate coated with a conductive polymer; and an aqueous electrolyte disposed in contact with the cathode and the anode is provided. The electrolyte comprises a salt of a weak organic acid and water. The electrolyte has a pH of from about 5.0 to about 8.0 and an ionic conductivity of from about 0.5 to about 80 milliSiemens per centimeter or more, determined at a temperature of 25° C.Type: ApplicationFiled: June 1, 2009Publication date: December 2, 2010Applicant: AVX CORPORATIONInventors: Dirk H. Dreissig, John Galvagni
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Publication number: 20100238608Abstract: An electrolytic capacitor that contains an anodically oxidized porous anode, cathode, and an electrolyte that contains an alkali metal salt and ionically conductive polymer is provided. The alkali metal salt forms a complex with the ionically conductive polymer and thereby improves its ionic conductivity, particularly at higher temperatures. The electrolyte also contains an organic solvent that reduces the viscosity of the electrolyte and helps lower the potential barrier to metal ion transport within the electrolyte to improve conductivity. By selectively controlling the relative amount of each of these components, the present inventors have discovered that a highly ionically conductive electrolyte may be formed that is also in the form of a viscous liquid. The liquid nature of the electrolyte enables it to more readily enter the pores of the anode via capillary forces and improve specific capacitance. Further, although a liquid, its viscous nature may inhibit the likelihood of leakage.Type: ApplicationFiled: March 23, 2009Publication date: September 23, 2010Applicant: AVX CORPORATIONInventors: Dirk H. Dreissig, John Galvagni
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Publication number: 20100188801Abstract: A method of preparing an energy-storage device is disclosed, which involves deposition of a redox polymer of the poly-Me(R-Salen) type onto a conducting substrate by electrochemical polymerization to prepare an electrode for use in the energy-storage device. Polymerization occurs at a voltage applied between the substrate and a counter-electrode, both of which are submerged in an electrolyte. The electrolyte contains an organic solvent, compounds capable of dissolving in the solvent and forming electrochemically inactive ions at concentrations of no less than 0.01 mol/L within the range of potentials from ?3.0 V to +1.5 V, and a metal complex polymer represented by the formula poly-[Me(R-Salen)] dissolved at a concentration of no less than 5×10?5 mol/L, wherein Me is a transition metal having at least two different degrees of oxidation, R is an electron-donating substituent, and Salen is a residue of bis(salicylaldehyde)-ethylenediamine.Type: ApplicationFiled: April 1, 2010Publication date: July 29, 2010Inventors: Alexander Lyubomirskiy, Valeriy Valentinovich Pavlov, Alexander Mikhailovich Timonov, Sergey Anatolijevich Logvinov, Dmitriy Ivanovich Pivunov, Svetlana Viktorovna Vasiljeva, Nik Shkolnik, Sam Kogan
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Publication number: 20100165544Abstract: An electrode foil includes a structure a structure in which metal particles and ceramic particles, which primarily include at least one of valve metal particles having a dielectric constant and ceramic particles, are deposited on a surface of a metal foil.Type: ApplicationFiled: October 16, 2009Publication date: July 1, 2010Applicant: FUJITSU LIMITEDInventors: Yoshihiko Imanaka, Minoru Funahashi, Hidetoshi Ishizuka, Katsuharu Yamada
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Publication number: 20100165545Abstract: A first anode foil is opposed to a first portion of a cathode foil and is arranged on one side of the cathode foil, and a second anode foil is opposed to a second portion of the cathode foil and is arranged on the other side. A first separator paper sheet is arranged between the first portion of the cathode foil and the first anode foil. A second separator paper sheet is arranged on the other side with respect to the cathode foil, and is opposed to the first portion of the cathode foil. A third separator paper sheet is arranged between the second portion of the cathode foil and the second anode foil. A fourth separator paper sheet is arranged on the one side with respect to the cathode foil, and is opposed to the second portion of the cathode foil.Type: ApplicationFiled: December 23, 2009Publication date: July 1, 2010Applicants: SANYO ELECTRIC CO., LTD., SAGA SANYO INDUSTRIES CO., LTD.Inventor: Kazumasa FUJIMOTO
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Publication number: 20100128415Abstract: A lithium ion capacitor includes a positive electrode made of a material capable of reversibly carrying either one or both of a lithium ion and an anion, a negative electrode made of a material capable of reversibly carrying a lithium ion, and an electrolytic solution made of a non-protonic organic solvent electrolytic solution of a lithium salt. A negative electrode active material is non-graphitizable carbon having a ratio of number of hydrogen atoms to number of carbon atoms of zero or more and less than 0.05. The lithium ion is doped in advance to either one or both of the negative electrode and the positive electrode so that a negative electrode potential when a cell is discharged to a voltage one half a charging voltage of the cell is 0.15 V or less relative to a lithium ion potential.Type: ApplicationFiled: October 17, 2006Publication date: May 27, 2010Applicant: FUJI JUKOGYO KABUSHIKI KAISHAInventors: Nobuo Ando, Kenji Kojima, Shinichi Tasaki, Hiromoto Taguchi, Kohei Matsui, Atsuro Shirakami, Yukinori Hato
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Publication number: 20100085683Abstract: Disclosed herein is an electrolyte having excellent long-term reliability, a high withstanding voltage (a wide potential window), and high conductivity. The electrolyte contains a quaternary ammonium salt represented by the following general formula (1): wherein R1 represents a hydrocarbon group; R2 represents a hydrocarbon group, a hydrogen atom, or a halogen atom; R3 to R14 each represent an alkyl group, a fluoroalkyl group, a hydrogen atom or a halogen atom, C and C* each represent a carbon atom, N represents a nitrogen atom; h, i, j, x, y, and z are each an integer of 0 to 6, (h+x) is an integer of 0 to 6, (i+y) and (j+z) are each an integer of 1 to 6; and X? represents a counter anion having a HOMO energy of ?0.60 to ?0.20 a.u. as determined by the first-principle calculation on molecular orbital of the counter anion.Type: ApplicationFiled: February 29, 2008Publication date: April 8, 2010Applicant: SANYO CHEMICAL INDUSTRIES, LTD.Inventors: Shiyou Guan, Junji Watanabe
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Publication number: 20100053847Abstract: Provide is an aluminum electrolytic capacitor exhibiting low specific resistance and low impedance property and realizing high reliability. An electrolytic capacitor has a structure in which: a capacitor element which is formed by rolling an anode foil and a cathode foil each connected with an electrode extraction lead through a separator and which is impregnated with a drive electrolytic solution is included in a cylindrical outer case having a closed-end; and an open end of the outer case is sealed with an elastic sealing body, in which: the drive electrolytic solution contains a tricyanomethide salt represented by the below-indicated chemical formula (1); and the drive electrolytic solution has a water content of 3.0 wt % or less: where, R represents a cation pairing with a tricyanomethide ion in formation of a tricyanomethide salt.Type: ApplicationFiled: December 7, 2006Publication date: March 4, 2010Applicants: NICHICON CORPORATION, NIPPON SHOKUBAI CO., LTD.Inventors: Tomoyuki Tani, Seitaro Onoue, Takayuki Ueda, Keiichiro Mizuta, Hironobu Hashimoto, Taisuke Kasahara
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Publication number: 20100027193Abstract: A coated electrode includes a current collector of an etched aluminum foil having a thickness of 20 to 45 ?m, an apparent density of 2.00 to 2.54 g/cm3, an air permeability of 20 to 120 s and a number of through-holes penetrating therethrough from the front surface to the back surface, and an electrode layer formed by applying a coating material including, as an active material, a substance capable of reversibly carrying lithium ions and anions on to the current collector. The coated electrode is industrially producible, high in conductivity and strength, and excellent in evenness. A capacitor, for example, can make use of the electrode.Type: ApplicationFiled: December 26, 2007Publication date: February 4, 2010Applicant: JM ENERGY CORPORATIONInventors: Chisato Marumo, Kenichi Matsumoto, Yuka Toyomasu, Makoto Ohshima