With Separator Patents (Class 361/512)
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Patent number: 8173289Abstract: The storage cell includes a flat roll electrode that includes a strip of positive electrode having a positive electrode current collector foil and a positive electrode layer formed thereon, a strip of negative electrode having an electrode current collector foil and a negative electrode layer formed, and a strip of electrically insulated separator, the strip of positive electrode and the strip of negative electrode being wound into a flat roll configuration with the strip of electrically insulated separator sandwiched therebetween; a sealed casing that hermetically seals the flat roll electrode impregnated with an electrolyte; a positive terminal and a negative terminal each electrically insulated from the sealed casing, connected to the positive current collector foil and the negative current collector foil, respectively.Type: GrantFiled: November 12, 2008Date of Patent: May 8, 2012Assignee: Mitsubishi Electric CorporationInventors: Kenro Mitsuda, Daigo Takemura, Osamu Hiroi, Shigeru Aihara
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Patent number: 8174817Abstract: At least one wound film/foil or metalized film capacitor is sealed between its electrodes to form a sealed enclosed annular region between the interior of the enclosure, the electrodes and the exterior of the wound capacitor to form a sealed capacitor assembly. A fluid dielectric can be introduced into the sealed enclosed annular region under a vacuum to form a sealed and impregnated wound capacitor assembly.Type: GrantFiled: June 16, 2010Date of Patent: May 8, 2012Assignee: High Energy Corp.Inventors: George Georgopoulos, Stephan Andreas Hoffman
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Patent number: 8169773Abstract: The present invention provides an electrochemical capacitor, which includes: a cell electrode unit which includes cathodes, anodes, and separators interposed between the cathodes and the anodes which are alternately stacked in multiple layers; cathode terminals which are extended to one side of each of the cathodes and are stacked one above another; anode terminals which are extended to one side of each of the anodes and are stacked one above another with a separation space from the cathode terminals; a housing for receiving the cell electrode unit, the cathode terminals, and the anode terminals; and an output terminal unit which is insert-molded to penetrate from the inside to the outside of the housing, electrically connected to at least one of each of the stacked cathode and anode terminals, and immobilizes the cell electrode unit into the housing.Type: GrantFiled: October 15, 2010Date of Patent: May 1, 2012Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Sang Kyun Lee, Bae Kyun Kim, Jung Eun Noh
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Patent number: 8164881Abstract: An extremely high-performance polyaniline electrode was prepared by potentiostatic deposition of aniline on hierarchically porous carbon monolith (HPCM), which was carbonized from mesophase pitch. A capacitance value of 2200 F g?1 of polyaniline was obtained at a power density of 0.47 kW kg?1 and an energy density of 300 Wh kg?1. This active material deposited on HPCM also has an advantageous high stability. These superior advantages can be attributed to the backbone role of HPCM. This method also has the advantages of not introducing any binder, thus contributing to the increase of ionic conductivity and power density. High specific capacitance, high power and energy density, high stability, and low cost of active material make it very promising for supercapacitors.Type: GrantFiled: May 25, 2007Date of Patent: April 24, 2012Assignee: Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V.Inventors: Yong-Sheng Hu, Yu-Guo Guo, Lizhen Fan, Joachim Maier, Philipp Adelhelm, Bernd Smarsly, Markus Antonietti
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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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Patent number: 8149568Abstract: This invention discloses a load system for loading an Mcap energy storage module to an apparatus, comprising: a storage unit and a load unit. The storage unit further comprises: a first housing part and a seal for sealing the first housing part. The first housing part includes four side walls, a bottom wall and a first opening. A plurality of Mcap cell are disposed in the first housing part through the first opening. A first electrode formed in a side wall. A second electrode formed in another side wall facing the first side wall. The load unit comprises a second housing part and a seal for sealing the second housing part. The storage unit is loaded into the second housing part through the second opening.Type: GrantFiled: March 18, 2010Date of Patent: April 3, 2012Assignee: Northern Lights Semiconductor Corp.Inventors: James Chyi Lai, Kai Chun Fong
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Patent number: 8139343Abstract: An electrical energy storage device includes a first electrode; a second electrode; a separator; and an electrolyte; where the separator is an electronic insulator; the separator is positioned between the first and second electrodes; the separator includes a first surface proximal to the first electrode and a second surface proximal to the second electrode; the separator is configured to support an electric double layer at the first surface, the second surface, or at both the first surface and the second surface; and the device is an electrical energy storage device.Type: GrantFiled: March 7, 2011Date of Patent: March 20, 2012Assignee: WiSys Technology FoundationInventors: Charles P. Gibson, Annamalai Karthikeyan
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Patent number: 8130487Abstract: A capacitor includes a capacitor element including first and second electrodes, an electrolyte solution, first and second collector plates made of metal and joined to the first and second electrodes of the capacitor element, respectively, a case accommodating the capacitor element, the electrolyte solution, the first and second collector plates, a terminal plate placed at an opening of the case and joined to the second collector plate, and a sealing rubber sealing the terminal plate and the opening of the case. The case has a tubular portion and a bottom plate closing the tubular portion. An inner surface of the bottom plate of the case has a contacting portion contacting the first collector plate and a junction portion facing the first collector plate.Type: GrantFiled: September 24, 2009Date of Patent: March 6, 2012Assignee: Panasonic CorporationInventors: Toshiaki Shimizu, Kiyoshi Shibuya, Takumi Yamaguchi, Kouji Ueoka, Ichiro Aoki
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Patent number: 8125767Abstract: 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: GrantFiled: December 26, 2007Date of Patent: February 28, 2012Assignee: JM Energy CorporationInventors: Chisato Marumo, Kenichi Matsumoto, Yuka Toyomasu, Makoto Ohshima
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Patent number: 8120892Abstract: The present invention discloses an improved electrode for a supercapacitor and a method of preparation thereof. The inventive electrode comprises a collector, a carbon substrate disposed on the collector comprising ultrafine carbon fibers having a specific surface area of at least 200 m2/g (BET) and a d002 value of 0.36 nm or less, and a metal oxide thin layer formed on the carbon substrate. The electrode of the subject invention retains a high specific capacitance during high-speed charging and discharging cycles.Type: GrantFiled: April 15, 2008Date of Patent: February 21, 2012Assignee: Korea Institute of Science and TechnologyInventors: Dong Young Kim, Seong Mu Jo, Sung-Yeon Jang, Young Rack Ahn
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Patent number: 8107222Abstract: A supercapacitor and a manufacturing method thereof are disclosed. With manufacturing method of Supercapacitor including: arranging a plurality of filters to be spaced at a designated interval apart, forming a first plating layer connecting one end of the filter, forming a second plating layer lengthened along the filter from the first plating layer, polymerizing to form a conductive polymer layer between the second plating layer, and removing the filter, capacitance (C), power (kw) and energy (E) can be increased as the space for absorbing electrons is widened, by making the surface area of an electrode wider than the a general film.Type: GrantFiled: June 5, 2008Date of Patent: January 31, 2012Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Hyun-Chul Jung, Sang-Yool Lee, Young-Kwan Lee
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Patent number: 8107223Abstract: The disclosure relates to asymmetric supercapacitors containing: a positive electrode comprising a current collector and a first active material selected from a layered double hydroxide of formula [M2+1?xMx3+(OH)2]An?x/n·mH2O where M2+ is at least one divalent metal, M3+ is at least one trivalent metal and A is an anion of charge n?, where x is greater than zero and less than 1, n is 1, 2, 3 or 4 and m is 0 to 10; LiCoO2; LiCoxNiyO2 where x and y are greater than zero and less than 1; LiCoxNiyMn(1?x?y)O2 where x and y are greater than zero and less than 1; CoSx where x is from 1 to 1.5; MoS; Zn; activated carbon and graphite; a negative electrode containing a material selected from a carbonaceous active material, MoO3 and Li1xMoO6?x/2; an aqueous electrolyte solution or a non-aqueous ionic conducting electrolyte solution containing a salt and a salt and a non-aqueous solution; and a separator plate. Alternatively, the electrolyte can be a solid electrolyte.Type: GrantFiled: July 29, 2009Date of Patent: January 31, 2012Assignee: U.S. Nanocorp, Inc.Inventors: Stephen M. Lipka, John R. Miller, Tongsan D. Xiao, Jinxiang Dai
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Patent number: 8102642Abstract: A capacitor includes a plurality of electrode substrates, with each of the plurality of electrode substrates having a coated portion and an uncoated portion. The coated portion is coated with a coating material that includes a high surface area activated carbon material, a water soluble binder selected from the group consisting of: poly vinyl alcohol, poly acrylic acid, polymethacrylic acid, polyethylene oxide, polyacrylamide, poly-N-isopropylearylamide, poly-N,N-dimethylacrylamide, polyethyleneimine, polyoxyethylene, polyvinylsulfonic acid, poly(2-methoxyethoxyethoxyethylene), butadiene-acrylonitrile, and combinations thereof, and a water soluble thickener. A separator is inserted between adjacent substrates of the plurality of electrode substrates. The capacitor further includes an electrolyte. A method of manufacturing the capacitor is also provided.Type: GrantFiled: August 6, 2010Date of Patent: January 24, 2012Assignee: International Battery, Inc.Inventors: Milburn Ebenezer Jacob Muthu, Henry Meehan, David Paolazzi, Shanthi Korutla, David K. Whitmer
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Patent number: 8098482Abstract: A double layer capacitor (DLC) containing at least one double layer capacitor cell is provided. Each double layer capacitor cell contains two current collectors, each containing a metallized carrier film with upper and lower planar surfaces, two thin electrode layers in direct contact with the lower and upper planar surfaces of the metallized carrier films of the first and second current collectors, and a polymer electrolyte layer in direct contact with the first and the second thin electrode layers. The polymer electrolyte is applied as a liquid which impregnates and encases the electrode layers and then solidified to form the electrolyte layer. The resulting DLC is preferably no thicker than about 20 microns, and may be as thin as 5 microns. Methods of producing a DLC and for forming a cross-linked electrolyte are also provided.Type: GrantFiled: July 27, 2007Date of Patent: January 17, 2012Assignee: Illinois Tool Works Inc.Inventors: Ian W. Clelland, Rick A. Price, Paul R. Jelonek
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Patent number: 8098483Abstract: The present invention is an electrochemical double layer capacitor (EDLC) series stack formed into a single electrolyte cell structure. The concatenated multiple electrode assembly stack has electrode assemblies electrically connected in series. The electrode assemblies have a double-sided activated carbon electrode formed on a current collector. Power tabs are connected to the end electrode assemblies. An electrolyte is also provided. A poly bag contains the electrolyte and the electrode assemblies. The electrode assemblies form a double-sided activated-carbon electrode on a current collector. The EDLC stack has a number of segments and mass free zones separating them. The segments are folded so that mass free zones are disposed at the apex of each fold.Type: GrantFiled: October 25, 2010Date of Patent: January 17, 2012Assignee: Ioxus, Inc.Inventor: Thor E. Eilertsen
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Patent number: 8089746Abstract: There are provided a microporous film for an electric storage device separator, which can increase energy density and power density when used in an electric storage device, and which is excellent in handling properties in a processing step to the electric storage device, as well as an electric storage device separator and an electric storage device, using the microporous film. Specifically, provided is a microporous film for an electric storage device separator, characterized by including a porosity of 70% or more, a strength of 40 MPa or more in a longitudinal direction, an average pore size of from 40 to 400 nm, anuclear pores, and exhibiting biaxial orientation.Type: GrantFiled: September 29, 2006Date of Patent: January 3, 2012Assignee: TORAY Industries, Inc.Inventors: Jun'ichi Masuda, Masatoshi Ohkura, Shigeru Tanaka, Hajime Fukushima
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Patent number: 8085526Abstract: A solution or dispersion of an ion-permeable compound, a carbon fine particle a, and a solvent is coated on a conductive sheet such as an aluminum foil, the coat is dried to form a film a, which allows to obtain a collector for an electric double layer capacitor. A solution or dispersion of a binder, a carbon fine particle b, an activated carbon b, and a solvent is coated on the film a, the coat is dried to form a film b, which results in obtaining an electrode for an electric double layer capacitor. The electrode is piled on a separator, and immersed in an electrolytic solution to obtain an electric double layer capacitor.Type: GrantFiled: September 25, 2009Date of Patent: December 27, 2011Assignee: Showa Denko K.K.Inventor: Masahiro Ohmori
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Patent number: 8072734Abstract: An inexpensive and reliable dry process based capacitor and method for making a self-supporting dry electrode film for use therein is disclosed. Also disclosed is an exemplary process for manufacturing an electrode for use in an energy storage device product, the process comprising: supplying dry carbon particles; supplying dry binder; dry mixing the dry carbon particles and dry binder; and dry fibrillizing the dry binder to create a matrix within which to support the dry carbon particles as dry material.Type: GrantFiled: January 31, 2008Date of Patent: December 6, 2011Assignee: Maxwell Technologies, Inc.Inventors: Linda Zhong, Xiaomei Xi, Porter Mitchell, Bin Zou
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Patent number: 8068327Abstract: A holding device for encased capacitors used for electric drive engineering. The inventive holding device comprises integrateable and separable lower and top holding parts. Axially protruded retaining clamps are arranged on the top holding part around each encased capacitor. The lower holding part comprises an opening for the respective capacitor and each opening is surrounded with a sealing lip. The retaining clamps are pressed against the capacitors by the internal surface of the lower holding part. Sections protruded from the respective openings of the lower holding part are embodied in the form of the capacitor sections freely extending directly to a cold air flow of a device. The sealing lip is sealingly placed on the external wall of each encased capacitor in such a way that the penetration of solid or liquid materials inside the lower holding part is prohibited, thereby preventing a high IP protection degree.Type: GrantFiled: July 25, 2006Date of Patent: November 29, 2011Assignee: Lenze Drives GmbHInventors: Josef Seifert, Rudi Hueskes, Matthias Rohde, Alex Itten
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Patent number: 8059389Abstract: A composite suitable as a charge-storing material for electrochemical capacitors contains carbon nanotubes and a carbonaceous materiel. The carbonaceous material is the carbonization residue of a biopolymer or seaweed rich in heteroatoms. Wherein the carbonization residue of the biopolymer or seaweed is electrically conductive and has a heteroatom content as detected by XPS of at least 6%.Type: GrantFiled: August 17, 2009Date of Patent: November 15, 2011Assignees: SGL Carbon SE, Centre National de la Recherche Scientifique, L'Universite d'OrleansInventors: Martin Cadek, Mario Wachtler, Encarnacion Raymundo-Pinero, Francois Beguin
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Patent number: 8040659Abstract: A capacitor is presented that includes a housing, an electrode stack, a liner, and a fill port. The liner is located between the housing and the electrode stack. The liner includes a recessed portion. A fill port extends through the housing across from the recessed portion in the liner. A gap is formed between the recessed portion and the fill port.Type: GrantFiled: May 27, 2010Date of Patent: October 18, 2011Assignee: Medtronic, Inc.Inventors: Leo J. Brabeck, Jeffrey D. Chaput, Thomas M. Henderson, Thomas W. Kanitz, Jeffrey J. Louwagie, Christian S. Nielsen, Walter C. Sunderland
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Patent number: 8018712Abstract: A bus-bar for assembling a capacitor device is disclosed, which is capable of improving the environment of a soldering operation for the bus-bar being soldered to a capacitor device, reducing the inferior rate of the capacitor device while improving the quality of the capacitor device, and reducing the weight of the capacitor module, in soldering the bus-bar to capacitor devices. The lead frame attached to polar plates by soldering is formed thinner than the other parts of the bus-bar, and opening parts having an oval or polygonal shape are formed on a surface of the bus-bar so that two adjoining capacitor devices can be exposed. The lead frame is formed in the opening in order for soldering with the polar plates of the capacitor device.Type: GrantFiled: September 26, 2008Date of Patent: September 13, 2011Assignee: Nuintek Co., Ltd.Inventors: Chang Hoon Yang, Dae Jin Park, Yong Won Jun
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Patent number: 8004823Abstract: A lithium ion capacitor includes a positive electrode made of a material capable of reversibly doping and dedoping lithium ions and/or anions; a negative electrode made of a material capable of reversibly doping and dedoping lithium ions; and an electrolytic solution made of an aprotonic organic solvent electrolyte solution of a lithium salt. When the negative electrode and/or positive electrode and a lithium ion supply source are electrochemically brought into contact, lithium ions are doped in a negative electrode and/or positive electrode. A positive electrode potential after the positive electrode and negative electrode are short-circuited is 2.0 V (vs. Li/Li+) or less. The positive electrode and/or negative electrode has a current collector made of a metal foil that has many holes that penetrate through both sides and have an average diameter of inscribed circles of the through-holes of 100 ?m or less.Type: GrantFiled: November 13, 2006Date of Patent: August 23, 2011Assignee: Fuji Jukogyo Kabushiki KaishaInventors: Hiromoto Taguchi, Nobuo Ando, Hideki Shibuya, Shinichi Tasaki, Risa Miyagawa, Yukinori Hato, Osamu Hatozaki
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Patent number: 7995328Abstract: A capacitor for use in a hybrid vehicle and the like has a structure contrived to achieve reduction in size, increase in capacitance and decrease in resistance. An element has a pair of positive and negative electrodes, each comprising a collector made of a metallic foil having a carbon-containing electrode layer formed thereon, the electrodes rolled up with a separator interposed therebetween to form a pair of electrode terminations at opposite sides of the element. A dimension of one of the electrode terminations is set shorter than that of the other electrode termination. This structure achieves an increase in capacitance and decrease in resistance since it can increase an effective area of electrode surfaces under a restricted condition of keeping the same height of the element as it is placed inside a casing of given dimensions.Type: GrantFiled: December 5, 2007Date of Patent: August 9, 2011Assignee: Panasonic CorporationInventor: Teruhisa Miura
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Patent number: 7990680Abstract: In a method of manufacturing a porous coke suitable as a charge-storing material in electrochemical capacitors, one manufactures or provides a non-calcined isotropic coke with spherical or onion-shaped morphology and low graphitizability as a starting material. The starting material is comingled with a caustic alkali to obtain a homogenous mixture. The homogenous mixture is heat treated at a temperature in a range between 650 and 950° C. to obtain the porous coke. The porous coke is washed and neutralized.Type: GrantFiled: August 17, 2009Date of Patent: August 2, 2011Assignee: SGL Carbon SEInventors: Martin Cadek, Wilhelm Frohs, Mario Wachtler
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Patent number: 7986509Abstract: A composite electrode is created by forming a thin conformal coating of mixed metal oxides on a highly porous carbon structure. The highly porous carbon structure performs a role in the synthesis of the mixed oxide coating and in providing a three-dimensional, electronically conductive substrate supporting the thin coating of mixed metal oxides. The metal oxide mixture shall include two or more metal oxides. The composite electrode, a process for producing said composite electrode, an electrochemical capacitor and an electrochemical secondary (rechargeable) battery using said composite electrode are disclosed.Type: GrantFiled: January 17, 2008Date of Patent: July 26, 2011Inventor: Fraser Wade Seymour
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Patent number: 7986510Abstract: An electrochemical device having an operational voltage up to 4.5 V in combination with a high concentration of an electrolyte salt consisting of a tetrafluoroborate salt and a eutectic of two solvents in which ethylene carbonate is one and an improved carbon electrode a preferred electrochemical device is a capacitor.Type: GrantFiled: May 30, 2009Date of Patent: July 26, 2011Inventors: W. Novis Smith, Joel R. McCloskey, James J. Gormley
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Patent number: 7978457Abstract: Disclosed is an all-solid-state electric double layer capacitor comprising a solid electrolyte and a current collector, wherein the solid electrolyte is an inorganic solid electrolyte. Such a capacitor has high capacity and is free from any fear of leakage of an electrolytic solution, and also ensures high heat resistance and enables a low process cost.Type: GrantFiled: November 21, 2007Date of Patent: July 12, 2011Assignee: Panasonic CorporationInventors: Kaoru Nagata, Tetsuo Nanno
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Patent number: 7974075Abstract: A method for manufacturing an electrode of a supercapacitor is provided. First, a poly(acrylonitrile) (PAN) fabric is provided. The PAN fabric includes a plurality of PAN fibers each having a diameter of about 50-500 nm. Then, the PAN fabric undergoes a heat treatment so that the PAN fibers are carbonized to form a carbon fiber textile. The carbon fiber fabric includes a plurality of carbon fibers each having a diameter of about 50-500 nm. The surface of each carbon fiber is nano-porous having a plurality of nano pores of about 1-50 nm in diameter. The total surface area of the nano pores account for about 85-95% of the total surface area of the carbon fibers. The carbon fiber fabric is then cut to acquire the electrode of the supercapacitor.Type: GrantFiled: December 15, 2008Date of Patent: July 5, 2011Assignee: Taiwan Textile Research InstituteInventors: Chao-Chun Peng, Haw-Jer Chang, Wen-Ting Lin
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Patent number: 7948739Abstract: A composite composition for use in an electrode for electrochemical capacitors, comprising: (a) an electrochemically active material; and (b) exfoliated graphite flakes that are substantially interconnected to form a porous, conductive graphite network comprising pores, wherein at least a portion of the active material resides in a pore of the network. The composite composition is characterized by having liquid accessible pores which provide a surface area greater than about 200 m2/gm, preferably greater than 500 m2/gm, more preferably greater than 1000 m2/gm, and most preferably greater than 1000 m2/gm. Also disclosed is a capacitor that includes at least an electrode comprising such a composite composition. A supercapacitor featuring such a composite electrode exhibits an exceptionally high capacitance value and high electrical conductivity.Type: GrantFiled: August 27, 2007Date of Patent: May 24, 2011Assignee: Nanotek Instruments, Inc.Inventors: Aruna Zhamu, Bor Z. Jang
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Patent number: 7936555Abstract: A flexible super capacitor including a pair of flexible electrodes and a separator film is disclosed. Each flexible electrode includes a carbon fiber layer and a collector formed on a surface of the carbon fiber layer. The pair of flexible electrodes has two outer surfaces, and the collector layers are formed on the outer surfaces of the pair of the flexible electrodes. The separator film is disposed between the flexible electrodes. The collector layer would be formed on the carbon fiber layer with surface metalizing the carbon fiber layer. A method for fabricating the flexible electrode of the flexible super capacitor is also disclosed.Type: GrantFiled: December 20, 2007Date of Patent: May 3, 2011Assignee: Taiwan Textile Research InstituteInventors: Wen-Ting Lin, Hung-Chang Chen, Jui-Kai Hu, Nae-Lih Wu
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Patent number: 7933114Abstract: Composite carbon electrodes for use in, for example, Capacitive Deionization (CDI) of a fluid stream or, for example, an electric double layer capacitor (EDLC) are described. Methods of making the composite carbon electrodes are also described. The composite carbon electrode comprises an electrically conductive porous matrix comprising carbon; and an electric double layer capacitor, comprising an activated carbonized material, dispersed throughout the pore volume of the electrically conductive porous matrix.Type: GrantFiled: August 31, 2007Date of Patent: April 26, 2011Assignee: Corning IncorporatedInventors: Adra Smith Baca, Roy Joseph Bourcier, Todd P St Clair, Prantik Mazumder, Andrew R Nadjadi, Vitor Marino Schneider
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Patent number: 7924549Abstract: Carbon electrodes for a capacitor having conditioned carbon elements in combination with a high concentration of an electrolyte tetrafluoroborate salt and a non-aqueous aprotic solvent to provide an operational voltage up to 4.5V and capacitors used with the carbon electrodes.Type: GrantFiled: October 14, 2008Date of Patent: April 12, 2011Inventors: W. Novis Smith, Joel R. McCloskey, James J. Gormley
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Patent number: 7920371Abstract: Films of active electrode material, such as films made from carbon and fibrillized polymer, are attached to a porous separator. Outer surfaces of the films (i.e., surfaces opposite those adjoining the separator) are then covered with current collectors. The 5 resulting stack is usable in fabrication of electrical energy storage devices. The stack can be shaped as needed, connected to terminals, and immersed in an electrolytic solution to provide a double layer capacitor.Type: GrantFiled: August 2, 2009Date of Patent: April 5, 2011Assignee: Maxwell Technologies, Inc.Inventors: Porter Mitchell, Xiaomei Xi, Linda Zhong
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Patent number: 7916453Abstract: An energy storage cell pack cradle assembly for holding multiple rows of energy storage cells oriented along a dominant axis of vibration includes a first cradle member including a plurality of energy storage cell body supporting structures including respective holes; a second cradle member including a plurality of energy storage cell body supporting structures including respective holes; and one or more fasteners connecting the first cradle member and the second cradle member together. The energy storage cell body supporting structures are configured to structurally support the energy storage cells, with the energy storage cells oriented along a dominant axis of vibration, by energy storage cell bodies of the energy storage cells with respective electrically conductive terminals extending through the respective holes without structural support of the electrically conductive terminals by the cradle members.Type: GrantFiled: June 2, 2010Date of Patent: March 29, 2011Assignee: ISE CorporationInventors: Vinh-duy Nguyen, Alexander J. Smith, Kevin T. Stone, Alfonso O. Medina
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Patent number: 7916452Abstract: A coin-type electrochemical element enables the external lead terminal portions to be accurately and reliably attached to a first lid portion and to a second lid portion of the coin-type electrochemical element, and a method of its production. A coin-type electric double layer capacitor includes a first lid portion and a second lid portion. External lead terminal portions, each having a nearly triangular shape, are separately connected to the outer surfaces of the lid portions. Upon providing the external lead terminal portions having the triangular shape, a welded portion is allowed to have an increased area enabling the coin-type electrochemical element of even a small size to be accurately and reliably welded and making it possible to provide the coin-type electrochemical element having excellent reliability.Type: GrantFiled: November 24, 2005Date of Patent: March 29, 2011Assignee: Panasonic CorporationInventors: Masatoshi Tasei, Nario Niibo, Masashige Ashizaki, Yukio Nishioka, Hirofumi Iwashima, Koichi Morikawa
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Patent number: 7911762Abstract: A capacitor provides a plurality of selectable capacitance values, by selective connection of six capacitor sections of a capacitive element each having a capacitance value. The capacitor sections are provided in a plurality of wound cylindrical capacitive elements. Two vertically stacked wound cylindrical capacitance elements may each provide three capacitor sections. There may be six separately wound cylindrical capacitive elements each providing a capacitor section. The capacitor sections have a common element terminal. A pressure interrupter cover assembly is sealingly secured to the open end of case for the elements and has a deformable cover with a centrally mounted common cover terminal and a plurality of section cover terminals mounted at spaced apart locations. A conductor frangibly connects the common element terminal of the capacitor section to the common cover terminal and conductors respectively frangibly connect the capacitor section terminals to the section cover terminals.Type: GrantFiled: September 9, 2008Date of Patent: March 22, 2011Assignee: American Radionic Company, Inc.Inventor: Robert M Stockman
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Patent number: 7911766Abstract: An electric energy storage component having coil windings and at least one connector. A plate of the connector is in contact with the coil windings. The plate of the connector has a surface which is provided with a terminal wherein the shape thereof is essentially that of a revolution. The plate also forms a series of bosses extending in a raised manner along a surface of the plate opposite to that containing the terminal. The terminal has at least one inner recess and at least one boss which penetrates into the recess.Type: GrantFiled: June 9, 2005Date of Patent: March 22, 2011Assignee: BatscapInventors: Olivier Caumont, Xavier Hascoet
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Patent number: 7907385Abstract: Systems and apparatus are provided for capacitor segments for use in a vehicle. A capacitor segment comprises an inner conductor configured to receive a first potential and having a generally L-shaped longitudinal cross-section. An outer conductor is configured to receive a second potential, and is electrically insulated from the inner conductor. The outer conductor comprises a first section having a generally L-shaped longitudinal cross-section aligned with the inner conductor, and a second section coupled to the first section and having a generally L-shaped lateral cross-section. The second section and the inner conductor define an inner region. A capacitor is located in the inner region and coupled to the inner conductor and the second section. The capacitor segment is configured such that current flows through the capacitor in a first direction, and current flows through the second section in a second direction that generally opposes the first direction.Type: GrantFiled: July 14, 2008Date of Patent: March 15, 2011Assignee: GM Global Technology Operations LLCInventors: Mark D. Korich, David Tang, Mark L. Selogie
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Patent number: 7907387Abstract: The invention relates to an electrode for energy storage systems, the production method thereof, and an energy storage system comprising said electrode. More specifically, the invention relates to films of carbonaceous active material based on activated carbon with a determined porosity, purity and particle size distribution and a polymer binder, whereby the electrodes comprise one such coating film on a current collector and the supercapacitors comprise at least one of these electrodes. The invention also relates to the method of preparing the aforementioned films, electrodes and supercapacitors.Type: GrantFiled: May 22, 2006Date of Patent: March 15, 2011Assignee: Ceca S.A.Inventors: Thierry Aubert, Patrice Simon, Pierre-Louis Taberna
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Patent number: 7903391Abstract: This invention provides an aluminum electrode plate for an electrolytic capacitor, which, even when the thickness of an etching layer is large, can realize a high level of impregnation of a solid electrolyte and can reduce ESR of a capacitor. An aluminum plate having an aluminum purity of not less than 99.98% by mass is etched to form an etching layer having a depth of 70 ?m or above. When a plane cross section of a position deeper than 20 ?m from the surface in the etching layer is measured with an image analyzer, for each measured face, not less than 70% of the total number of pits within the measured face is accounted for by pits having a diameter of 0.01 to 1 ?m ?; in terms of equivalent circle diameter. The aluminum plate has an aluminum purity of not less than 99.98% by mass and comprises 5 to 50 ppm of Fe and 5 to 40 ppm of Cu with the balance consisting of inevitable impurities.Type: GrantFiled: August 24, 2007Date of Patent: March 8, 2011Assignee: Nippon Light Metal Company, Ltd.Inventors: Masahiko Katano, Masashi Isobe, Yuya Yoshida
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Cellular honeycomb ultracapacitors and hybrid capacitors with separator-supported current collectors
Patent number: 7903389Abstract: An ultracapacitor or hybrid capacitor includes an electrically non-conductive rigid or semi-rigid porous honeycomb separator structure having cells extending along a common direction and supporting current collector structure(s) thereon. The current collector structure may be porous and extend continuously on all inner surfaces of a cell of the honeycomb structure, or may extend along the common direction on separate portions of the inner surfaces of a cell. The material may desirably be an oxide or non-oxide ceramic, such as cordierite, silicon nitride, aluminum titanate, alumina, zircon, glass, or glass-ceramic.Type: GrantFiled: May 26, 2006Date of Patent: March 8, 2011Assignee: Corning IncorporatedInventors: Roy Joseph Bourcier, Kishor Purushottam Gadkaree, Mallanagouda Dyamanagouda Patil, Huan-Hung Sheng, Mark J Soulliere -
Patent number: 7903390Abstract: A supercapacitor having a bipolar membrane separator having a first side facing the negative electrode of the supercapacitor and having a plurality of cations and a second side facing the positive electrode and having a plurality of anions.Type: GrantFiled: June 19, 2008Date of Patent: March 8, 2011Assignee: Gas Technology InstituteInventor: Qinbai Fan
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Publication number: 20110051317Abstract: A both-side pressed terminal is connected as a first anode (cathode) lead tab terminal to an anode (a cathode) foil. A first connection surface of a connection portion of a one-side pressed terminal as a second anode (cathode) lead tab terminal is connected to an inner circumferential surface of the anode (cathode) foil. A position in a radial direction of a lead of the second anode (cathode) lead tab terminal is shifted inward to be in registration with a position in a radial direction of a lead of the first anode (cathode) lead tab terminal. Thus, an electrolytic capacitor free from position displacement of an anode (a cathode) lead tab terminal while maintaining characteristics as an electrolytic capacitor can be obtained.Type: ApplicationFiled: August 27, 2010Publication date: March 3, 2011Applicant: SANYO ELECTRIC CO., LTD.Inventor: Kazumasa Fujimoto
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Patent number: 7885053Abstract: An electric double layer capacitor includes first and second collectors, first and second polarizable electrode layers provided on the first and second collectors, respectively, a separator having an insulating property provided between the first and second polarizable electrode layers, and an electrolytic solution impregnated in the separator and the first and second polarizable electrode layers. A lower electric potential is to be applied to the second collector than to the first collector. The electrolytic solution contains anion including fluorine as electrolyte. The separator includes a separation layer facing the second polarizable electrode layer, and an inhibition layer facing the first polarizable electrode layer. The separation layer contains cellulose. The inhibition layer is made of material different from that of the separation layer. The inhibition layer prevents cellulose from decomposing.Type: GrantFiled: May 24, 2007Date of Patent: February 8, 2011Assignee: Panasonic CorporationInventors: Nao Matsumura, Motohiro Sakata, Hideki Shimamoto
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Patent number: 7881043Abstract: A wound electric double-layer capacitor suppresses electrochemical reaction on polarized electrode layers, reduces characteristic degradation, and has high reliability. The capacitor has a capacitor element formed by winding positive and negative electrodes with a separator interposed between them, a metal case for storing the capacitor element and an electrolyte for driving, and a sealing member for sealing an opening of the metal case. In the positive and negative electrodes, positive and negative electrode lead wires are coupled to exposed parts of current collectors having polarized electrode layers on their both surfaces, respectively. The negative electrode is wound at least one extra turn from the winding end of the positive electrode of the capacitor element, and hence a part where the polarized electrode layers formed in the negative electrode face each other through the separator is formed on the outermost periphery of the capacitor element.Type: GrantFiled: November 21, 2006Date of Patent: February 1, 2011Assignee: Panasonic CorporationInventors: Eri Hirose, Yoshinori Takamuku, Yasuyuki Ito, Satomi Onishi
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Patent number: 7872857Abstract: The present subject matter includes a capacitor that includes at least a first element having a first element thickness, including at least a first substantially planar electrode with a first connection member, at least a second substantially planar electrode, and a first spacer member and at least a second element having a third substantially planar electrode with a second connection member, the first element and the second element stacked in alignment and defining a capacitor stack, the capacitor stack disposed in a case containing electrolyte, wherein the first spacer member, the first connection member, and the second connection member are in adjacent alignment defining a connection surface for electrical connection of the first substantially planar electrode and the third substantially planar electrode, with the adjacent first spacer member and first connection member having a first thickness approximately equal to the first element thickness.Type: GrantFiled: June 22, 2009Date of Patent: January 18, 2011Assignee: Cardiac Pacemakers, Inc.Inventor: James M. Poplett
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Patent number: 7872856Abstract: An energy storage cell pack cradle assembly for holding multiple rows of energy storage cells oriented along a dominant axis of vibration includes a first cradle member including a plurality of energy storage cell body supporting structures including respective holes; a second cradle member including a plurality of energy storage cell body supporting structures including respective holes; and one or more fasteners connecting the first cradle member and the second cradle member together. The energy storage cell body supporting structures are configured to structurally support the energy storage cells, with the energy storage cells oriented along a dominant axis of vibration, by energy storage cell bodies of the energy storage cells with respective electrically conductive terminals extending through the respective holes without structural support of the electrically conductive terminals by the cradle members.Type: GrantFiled: June 23, 2009Date of Patent: January 18, 2011Assignee: ISE CorporationInventors: Vinh-duy Nguyen, Alexander J. Smith, Kevin T. Stone, Alfonso O. Medina
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Patent number: 7864507Abstract: An electric double layer capacitor (EDLC) in a coin or button cell configuration having low equivalent series resistance (ESR). The capacitor comprises mesh or other porous metal that is attached via conducting adhesive to one or both the current collectors. The mesh is embedded into the surface of the adjacent electrode, thereby reducing the interfacial resistance between the electrode and the current collector, thus reducing the ESR of the capacitor.Type: GrantFiled: September 5, 2007Date of Patent: January 4, 2011Assignee: TPL, Inc.Inventors: Patrick Franz Fleig, Charles D. E. Lakeman, Mark Fuge
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Patent number: 7864508Abstract: An electrode material for an electric double layer capacitor, where a moldability is good, a flexion resistance and a cohesiveness to a current collector after molding into an active material layer are high and an internal resistance can be reduced, an electrode for an electric double layer capacitor obtained using the electrode material, and a capacitor are provided. The electrode material for the electric double layer capacitor is composed of a mixture particle containing a binder and an electrode active material, and in said mixture particle, 50 area % or more of a surface of said mixture particle has been coated with the binder.Type: GrantFiled: March 28, 2006Date of Patent: January 4, 2011Assignee: Zeon CorporationInventor: Yoshio Fukumine