With Separator Patents (Class 361/512)
  • Patent number: 10468204
    Abstract: A capacitor includes a capacitor element having electrode foils on the anode side and the cathode side laminated via separators, connecting parts of terminal components being disposed inside a laminated portion of the electrode foils and the separators, the connecting parts being connected to the electrode foils on the anode side and the cathode side; and a case that includes a storage part storing the capacitor element and having an opening portion sealed by a sealing body, that has a crimped part crimped from the outside of the storage part toward a side surface of the capacitor element, and that holds the capacitor element with the crimped part. The case is crimped to form the crimped part while avoiding a position at which the electrode foils of the capacitor element in the storage part overlap with tip portions of the connecting parts of the terminal components.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: November 5, 2019
    Assignee: NIPPON CHEMI-CON CORPORATION
    Inventors: Hirotsugu Ashino, Fusayoshi Endoh, Daizou Senzai, Takahiro Yoshida
  • Patent number: 10115529
    Abstract: The present invention provides solid electrolytic capacitor with excellent properties in high-voltage application of 80V or more and a manufacturing method thereof. The solid electrolytic capacitor is manufactured by: forming, in a capacitor element with an anode electrode foil and a cathode electrode foil wound with an interposed separator, a solid electrolyte layer by using a conductive polymer dispersion in which particles of a conductive polymer dispersed in a solvent; and filling voids inside the capacitor element in which the solid electrolyte layer has been formed with an electrolytic solution containing less than 9 wt % of a salt of a composite compound of inorganic acid and organic acid as a solute for filling.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: October 30, 2018
    Assignee: NIPPON CHEMI-CON CORPORATION
    Inventors: Kazuya Koseki, Masao Sakakura
  • Patent number: 10079112
    Abstract: A method for producing an electrolytic capacitor is performed in the following procedure. A solid electrolyte layer including a conductive polymer and a polyhydric alcohol is formed on an anode body on which a dielectric layer is formed. Then, the anode body on which the solid electrolyte layer is formed is impregnated with a first treatment liquid that contains an oxoacid having two or more hydroxy groups.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: September 18, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yuichiro Tsubaki, Masahiro Kajimura
  • Patent number: 10068713
    Abstract: An improved capacitor is described herein. The capacitor comprises a working element wherein the working element comprises an anode comprising a dielectric thereon and an anode conductive polymer layer on the dielectric. The capacitor also includes a cathode comprising a cathode conductive polymer layer and a conductive separator between the anode and said cathode. An anode lead is in electrical contact with the anode and a cathode lead is in electrical contact with the cathode.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: September 4, 2018
    Assignee: KEMET Electronics Corporation
    Inventors: Victor Andoralov, Ralf Deisenhofer
  • Patent number: 9805875
    Abstract: A capacitor and a manufacturing method thereof are provided. The capacitor includes a porous substrate, an electrolyte composition, and a pair of electrodes. The porous substrate has a plurality of holes. The electrolyte composition is located in the holes of the porous substrate, and the electrolyte composition includes an electrolyte solution and a nano carbon material dispersed in the electrolyte solution. The electrodes are respectively located on two opposite surfaces of the porous substrate.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: October 31, 2017
    Assignee: Unimicron Technology Corp.
    Inventors: Yin-Ju Chen, Cheng-Po Yu
  • Patent number: 9589734
    Abstract: A high voltage proof solid electrolytic capacitor that can prevent deterioration of voltage proof property due to lead-free reflow etc. and a manufacturing method thereof are provided. A capacitor element having an anode and cathode electrode foils wound via a separator is impregnated with a dispersion comprising conductive polymer particles or powder and a solvent to form a solid electrolyte layer consisting of a conductive polymer, and the voids inside the capacitor element having the solid electrolyte layer formed are filled with an ion-conducting substance comprising a mixed solvent comprising ethylene glycol and ?-butyrolactone together with a solute selected from at least one type of an ammonium salt, a quaternary ammonium salt, a quaternized amidinium salt, and an amine salt of an organic acid, an inorganic acid, and a composite compound between organic acid and inorganic acids to obtain a solid electrolytic capacitor.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: March 7, 2017
    Assignee: NIPPON CHEMI-CON CORPORATION
    Inventors: Kazuya Koseki, Kouichi Kuroda, Junichi Kawakami, Masao Sakakura
  • Patent number: 9153384
    Abstract: An electrolytic capacitor includes a capacitor element and an electrolyte solution impregnated in the capacitor element. The capacitor element includes an anode foil, cathode foil, separator, and a solid electrolytic layer. The anode foil has a dielectric layer on its surface, and the cathode foil confronts the anode foil. The separator is interposed between the anode foil and the cathode foil. The solid electrolytic layer is formed on the surfaces of the anode foil, cathode foil, and separator as an aggregate of fine particles of conductive polymer. The separator has an air-tightness not greater than 2.0 s/100 ml. Sizes of the fine particles measure not greater than 100 nm in diameter, and an amount of the fine particles contained falls within a range from 0.3 mg/cm2 to 1.2 mg/cm2, inclusive, as converted to weight per unit area of the anode foil.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: October 6, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tatsuji Aoyama, Hiroyuki Matsuura, Yuuki Murata, Yukiya Shimoyama, Junya Kushizaki, Hidehiro Sasaki
  • Patent number: 9036332
    Abstract: The present disclosure is related to hybrid capacitors specifically to PbO2/Activated Carbon hybrid ultracapacitors. The present disclosure is also related to hybrid capacitors specifically to PbO2/Activated Carbon hybrid ultracapacitors with an inorganic thixotropic-gelled-polymeric-electrolyte. The hybrid ultracapacitors of the present disclosure is simple to assemble, bereft of impurities and can be fast charged/discharged with high faradiac-efficiency.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: May 19, 2015
    Assignee: Indian Institute of Science
    Inventors: Ashok Kumar Shukla, Anjan Banerjee, Musuwathi Krishnamoorthy Ravikumar, Shaik Abdul Gaffoor
  • Patent number: 9025312
    Abstract: A collector for an electric double layer capacitor including a conductive sheet, and a film adhered on surface of the conductive sheet and including carbon fine particle and polysaccharide and/or cross-linked polysaccharide. An electrode for an electric double layer capacitor including a collector having a conductive sheet and a film adhered on surface of the conductive sheet, and a film including activated carbon and adhered on surface of the film of the collector. The film of the collector includes carbon fine particle and polysaccharide and/or cross-linked polysaccharide. An electric double layer capacitor including an electrode, a separator, and an electrolyte. The electrode includes a collector having a conductive sheet and a film adhered on surface of the conductive sheet, and a film including activated carbon and adhered on surface of the film of the collector. The film of the collector includes carbon fine particle and polysaccharide and/or cross-linked polysaccharide.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: May 5, 2015
    Assignee: Showa Denko K.K.
    Inventor: Masahiro Ohmori
  • Patent number: 9025316
    Abstract: An electrical component includes an inkjet-printed graphene electrode. Graphene oxide flakes are deposited on a substrate in a graphene oxide ink using an inkjet printer. The deposited graphene oxide is thermally reduced to graphene. The electrical properties of the electrode are comparable to those of electrodes made using activated carbon, carbon nanotubes or graphene made by other methods. The electrical properties of the graphene electrodes may be tailored by adding nanoparticles of other materials to the ink to serve as conductivity enhancers, spacers, or to confer pseudocapacitance. Inkjet-printing can be used to make graphene electrodes of a desired thickness in preselected patterns. Inkjet printing can be used to make highly-transparent graphene electrodes. Inkjet-printed graphene electrodes may be used to fabricate double-layer capacitors that store energy by nanoscale charge separation at the electrode-electrolyte interface (i.e., “supercapacitors”).
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: May 5, 2015
    Assignees: The Trustees of The Stevens Institute of Technology, The United States of America, as Represented by The Secretary of The Army
    Inventors: Woo Young Lee, Linh Le, De Kong, Matthew Henderson Ervin, James L. Zunino, III, Brian E. Fuchs
  • Patent number: 9025315
    Abstract: Electrochemical energy storage devices such as electric double layer capacitors include a flexible metal contact current collector establishing electrical contact with a conductive housing at numerous contact points. The flexible current collector simplifies manufacturing of the device and avoids laser welding on the conductive housing. The manufacture devices are operable with a reduced direct current resistance by virtue of the flexible current collector.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: May 5, 2015
    Assignee: Cooper Technologies Company
    Inventors: Cyrus Sam Rustomji, Kyle Yun-Su Kim
  • Patent number: 9019689
    Abstract: An apparatus includes a case capable of receiving a plurality of capacitive elements, each capacitor element having at least two capacitors, and each capacitor having a capacitive value. The apparatus also includes a cover assembly with a peripheral edge secured to the case. The cover assembly includes, for each of the plurality of capacitive elements, a cover terminal that extends upwardly from the cover assembly generally at a central region of the cover assembly. Each cover terminal is connected to one of the at least two capacitors of the respective one of the plurality of capacitive elements. The cover assembly also includes, for each of the plurality of capacitive elements, a cover terminal that extends upwardly from the cover assembly at a position spaced apart from the cover terminal generally at the central region of the cover assembly.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: April 28, 2015
    Assignee: American Radionic Company, Inc.
    Inventors: Robert M. Stockman, Richard W. Stockman, Michael B. Tricano, Jonathan Charles
  • Patent number: 9013860
    Abstract: An asymmetric supercapacitor includes a first structure and a second structure spaced apart from said second structure. One of the structures comprises an anode, and the other of the first and second structures comprises a cathode, wherein the first structure comprises an activated carbon electrode, and the second structure comprises a nanocomposite electrode. The nanocomposite electrode comprises a first network of nanowires that are interpenetrating with a second network of carbon nanotubes.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: April 21, 2015
    Assignee: The Regents of the University of California
    Inventors: Zheng Chen, Yunfeng Lu
  • Patent number: 9001496
    Abstract: An electrode for electric double-layer capacitor includes a collector with a protective layer containing phosphorous on its surface, and a polarizable electrode layer that is formed on this collector and can adsorb and desorb ions. An amount of a phosphorous compound per unit surface area of the collector, eluted when the collector is immersed into water, is not greater than 1.35 mg/m2 in terms of phosphorous equivalent. An electric double-layer capacitor employs this electrode for at least one of a positive electrode and a negative electrode.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: April 7, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tomohiro Okuzawa, Motonori Morikazu
  • Patent number: 9001495
    Abstract: An electrode useful in an energy storage system, such as a capacitor, includes an electrode that includes at least one to a plurality of layers of compressed carbon nanotube aggregate. Methods of fabrication are provided. The resulting electrode exhibits superior electrical performance in terms of gravimetric and volumetric power density.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: April 7, 2015
    Assignee: FASTCAP Systems Corporation
    Inventors: Fabrizio Martini, Nicolo Michele Brambilla, Riccardo Signorelli
  • Patent number: 8976508
    Abstract: The electrochemical cell of the present invention is provided with a hermetic container having a base member, a jointing material fixed to the base member, and a lid member welded on the base member via the jointing material, and in which a housing space sealed between the base member and the lid member is defined, and an electrochemical element which is housed inside the housing space and which is available to effect charging and discharging, wherein the lid member is made of stainless steel.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: March 10, 2015
    Assignee: Seiko Instruments Inc.
    Inventors: Tsuneaki Tamachi, Ryo Sato, Kenji Ogata, Isamu Shinoda, Shunji Watanabe
  • Patent number: 8976507
    Abstract: A method of increasing the area of carbon nanotubes used in fabricating capacitors is described. The method involves reacting carbon nanotubes with electrically conductive ions, molecules or nanoparticles that increase the surface area of the nanotubes. The capacitance and the energy stored in the capacitor can be increased by such treatment. Devices constructed from such treated materials and their properties are described.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: March 10, 2015
    Assignee: California Institute of Technology
    Inventors: Adrianus Indrat Aria, Bradley Lyon, Morteza Gharib
  • Patent number: 8976509
    Abstract: An aluminum material, a dielectric layer and an interposing layer formed in at least one part of a region of the surface of the aluminum material between the aluminum material and the dielectric layer and includes aluminum and carbon, wherein the dielectric layer includes dielectric particles including a valve metal, and an organic substance layer formed on at least one part of a surface of the dielectric particle.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: March 10, 2015
    Assignee: Toyo Aluminium Kabushiki Kaisha
    Inventors: Kunihiko Nakayama, Zenya Ashitaka, Hidetoshi Inoue
  • Patent number: 8953304
    Abstract: There is provided a high performance solid electrolytic capacitor that can be manufactured stably. The present invention provides the solid electrolytic capacitor comprising an anode foil and a cathode foil, and a separator arranged between the anode foil and the cathode foil, wherein the anode foil, the cathode foil, and the separator are wound around, so that the separator is intervened between the anode foil and the cathode foil, the anode foil has a dielectric oxide film layer, the separator comprises a solid electrolyte and a nonwoven fabric holding the solid electrolyte, the nonwoven fabric composing the separator is a laminated nonwoven fabric having at least two layers of the nonwoven fabric layers, and the laminated nonwoven fabric comprises a nonwoven fabric layer (layer I) composed of ultra fine fiber having a fiber diameter of 0.1 to 4 ?m, and a nonwoven fabric layer (layer II) composed of a thermoplastic resin fiber having a fiber diameter of 6 to 30 ?m.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: February 10, 2015
    Assignee: Asahi Kasei Fibers Corporation
    Inventors: Kazufumi Kato, Rumina Obi, Ikuo Ueno
  • Patent number: 8947855
    Abstract: Technologies are generally described for electrochemical capacitor devices. Some example electrochemical capacitor devices may include a composite electrode that includes an electrode substrate coupled to a polymeric electrochemical layer. The polymeric electrochemical layer may include: a conductive polymer electrically coupled to the electrode substrate; a solid state, ionically conductive electrolyte polymer; and non-conducting cross-links that covalently link the conductive polymer and the electrolyte polymer. Various example electrochemical capacitor devices may be constructed by laminating two of the composite electrodes against opposing sides of an ionically conducting separator membrane, and contacting the composite electrodes and the separator membrane with a liquid electrolyte. Some example electrochemical capacitor devices may display favorable performance such as symmetric charge storage, non-Faradic charge storage, and/or similar or greater capacity compared to carbon based systems.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: February 3, 2015
    Assignee: Empire Technology Development LLC
    Inventor: Vincenzo Casasanta, III
  • Patent number: 8913368
    Abstract: A three-dimensional network aluminum porous body in which the amount of aluminum forming a skeleton of the three-dimensional network aluminum porous body is uneven in the thickness direction, and a current collector and an electrode each using the aluminum porous body, and a manufacturing method thereof. In such a sheet-shaped three-dimensional network aluminum porous body for a current collector, the amount of aluminum forming a skeleton of the three-dimensional network aluminum porous body is uneven in the thickness direction. For example, in the case where a cross section in the thickness direction of the three-dimensional network aluminum porous body is divided into three regions of a region 1, a region 2 and a region 3 in this order, each region is configured so that the average of the amounts of aluminum in the region 1 and the region 3 differs from the amount of aluminum in the region 2.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: December 16, 2014
    Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Electric Toyama Co., Ltd.
    Inventors: Akihisa Hosoe, Kazuki Okuno, Hajime Ota, Koutarou Kimura, Kengo Goto, Hideaki Sakaida, Junichi Nishimura
  • Patent number: 8890476
    Abstract: The present invention provides a power system for a vehicle. The power system comprising a supercapacitor-like electronic battery that is connected to a battery charger. The battery charger provides energy to the supercapacitor-like electronic battery. A heater is operatively connected to the supercapacitor-like electronic battery to provide energy to heat the supercapacitor-like electronic battery thereby lowering the internal impedance of the supercapacitor-like electronic battery. A charging apparatus is operatively connected to the battery charger. A motor is operatively connected to the vehicle and the supercapacitor-like electronic battery. A feedback loop controller is operatively connected to the heater, the supercapacitor-like electronic battery and the motor.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: November 18, 2014
    Assignee: Oerlikon Advanced Technologies AG
    Inventors: Glyn Jeremy Reynolds, Roslinda Martienssen
  • Patent number: 8885325
    Abstract: An object of the present invention is to provide a way to reduce the internal resistance of a lithium ion capacitor without causing its capacity or withstand voltage to drop. The present invention provides a lithium ion capacitor having a positive electrode, a negative electrode, a separator, and an electrolyte solution, wherein the separator contains cellulose that has been given a treatment to create carbon-carbon double bonds.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: November 11, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Takatoshi Nagase, Koji Kano, Takeo Tsuzuki
  • Patent number: 8824120
    Abstract: An electrical double-layer capacitor electrode with excellent capacitance characteristics is obtained together with a manufacturing method therefor. Paper-molded sheet of carbon nanotubes is integrated with etched foil constituting a collector, by means of bumps and indentations formed on the surface of etched foil to prepare an electrical double-layer capacitor electrode. Alternatively, carbon nanotubes grown around core catalyst particles on substrate are integrated with etched foil by means of bumps and indentations formed on the surface of etched foil to prepare an electrical double-layer capacitor electrode. To manufacture these electrodes, this carbon nanotube sheet or substrate with carbon nanotubes grown thereon is laid over bumps and indentations on the surface of etched foil, and the sheet or substrate and the foil are pressed under 0.01 to 100 t/cm2 of pressure to integrate the carbon nanotubes with the etched foil.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: September 2, 2014
    Assignee: Nippon Chemi-con Corporation
    Inventors: Kenji Machida, Shunzo Suemastu, Kenji Tamamitsu
  • Patent number: 8810996
    Abstract: An electrical component includes an inkjet-printed graphene electrode. Graphene oxide flakes are deposited on a substrate in a graphene oxide ink using an inkjet printer. The deposited graphene oxide is thermally reduced to graphene. The electrical properties of the electrode are comparable to those of electrodes made using activated carbon, carbon nanotubes or graphene made by other methods. The electrical properties of the graphene electrodes may be tailored by adding nanoparticles of other materials to the ink to serve as conductivity enhancers, spacers, or to confer pseudocapacitance. Inkjet-printing can be used to make graphene electrodes of a desired thickness in preselected patterns. Inkjet printing can be used to make highly-transparent graphene electrodes. Inkjet-printed graphene electrodes may be used to fabricate double-layer capacitors that store energy by nanoscale charge separation at the electrode-electrolyte interface (i.e., “supercapacitors”).
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: August 19, 2014
    Assignees: The Trustees of the Stevens Institute of Technology, The United States of America, as represented by the Secretary of the Army
    Inventors: Woo Young Lee, Linh Le, De Kong, Matthew Henderson Ervin, James L. Zunino, III, Brian E. Fuchs
  • Patent number: 8810995
    Abstract: An electrochemical capacitor includes a first electrode, a second electrode, a membrane, and an electrolyte. The first electrode includes a carbon nanotube composite. The carbon nanotube composite includes a free-standing carbon nanotube structure, and a plurality of nano grains located on the carbon nanotube structure. The membrane is located between the first electrode and the second electrode, to separate the first electrode from the second electrode. The first electrode, the second electrode, and the membrane are disposed in the electrolyte.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: August 19, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Rui-Feng Zhou, Chui-Zhou Meng, Kai Liu, Kai-Li Jiang, Chang-Hong Liu, Shou-Shan Fan
  • Patent number: 8797715
    Abstract: Technologies are generally described for a capacitor device that includes parallel nanotubes. Such a capacitor device may include two parallel electrodes, each of which includes an array of nanotubes that extends from the surface of the respective electrode towards the other electrode. The nanotubes can be substantially parallel to each other and substantially perpendicular to the electrode from which they extend. The space between the electrodes and the nanotubes can be filled with an electrolyte or dielectric material, for example, a solution of an electrolyte solute in a suitable solvent. Such a capacitor device can have high electrode surface area but can avoid pore effects, in comparison to high surface area porous electrodes which do not have interpenetrating electrodes.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: August 5, 2014
    Assignee: Empire Technology Development LLC
    Inventor: Nicholas S. Bromer
  • Patent number: 8792224
    Abstract: Disclosed herein is a hybrid capacitor including: a first structure including a cathode containing activated carbon and an anode containing lithium; and a second structure including activated carbon layers formed on both surfaces of a current collector. With the hybrid capacitor, characteristics of an LIC and characteristics of an EDLC are implemented in a single cell, thereby making it possible to increase energy density and improve output characteristics.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: July 29, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hak Kwan Kim, Dong Hyeok Choi, Bae Kyun Kim, Jun Hee Bae
  • Patent number: 8780528
    Abstract: An electrolyte includes an organic solvent, a solute and a compound represented by chemical formula [1], both contained in the organic solvent. R1 and R2 represent a methyl group or an ethyl group; R3 represents a functional group having a straight chain including three or more carbon atoms and a hydroxyl group bonded to a terminal carbon; C represents a carbon atom; H represents a hydrogen atom; O represents an oxygen atom; and N represents a nitrogen atom.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: July 15, 2014
    Assignee: Panasonic Corporation
    Inventors: Seiji Takagi, Hideki Shimamoto, Hiroyuki Maeshima, Nao Matsumura
  • Patent number: 8773842
    Abstract: Disclosed is an electrical energy storage device provided with a metallic casing to receive a bare cell and first and second terminals located outside of the metallic casing corresponding to each electrode of the bare cell, including a plate-like member provided on at least one of the first and second terminals, an inner terminal contacting the plate-like member to form the boundary between the inner terminal and the plate-like member, and a laser welded portion formed along the boundary between the inner terminal and the plate-like member to connect the plate-like member with the inner terminal.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: July 8, 2014
    Assignee: LS Mtron, Ltd.
    Inventors: Ha-Young Lee, Jun-Ho Kim, Sang-Hyun Bae, Ji-Eun Kang
  • Patent number: 8767377
    Abstract: An electrolytic capacitor includes a capacitor element and an electrolyte solution impregnated into the capacitor element. The capacitor element includes an anode foil, cathode foil, separator, and a solid electrolytic layer. The anode foil has a dielectric layer on its surface, and the cathode foil confronts the anode foil. The separator is interposed between the anode foil and the cathode foil. The solid electrolytic layer is formed on the surfaces of the anode foil, cathode foil, and separator as an aggregate of fine particles of conductive polymer. The separator has an air-tightness not greater than 2.0 s/100 ml. Sizes of the fine particles measure not greater than 100 nm in diameter, and the fine particles are contained in an amount ranging from 0.3 mg/cm2 to 1.2 mg/cm2 converted to amounts per unit area of the anode foil.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: July 1, 2014
    Assignee: Panasonic Corporation
    Inventors: Tatsuji Aoyama, Hiroyuki Matsuura, Yuuki Murata, Yukiya Shimoyama, Jyunya Kushizaki, Hidehiro Sasaki
  • Patent number: 8760851
    Abstract: Methods and apparatus for an electrochemical double-layer capacitor for hostile environments. An electrochemical double-layer capacitor includes two electrodes wetted with an electrolyte, each electrode being attached to or in contact with or coated onto a current collector and separated from each other by a separator porous to the electrolyte, the electrodes, electrolyte and current collector containing less than 1,000 parts per million (ppm) of impurities, while exhibiting a leakage current less than 1 amp per liter of volume over a range of operating temperatures and at a voltage up to a rated voltage.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: June 24, 2014
    Assignee: Fastcap Systems Corporation
    Inventors: Riccardo Signorelli, Lindsay A. Wilhelmus
  • Patent number: 8749952
    Abstract: The invention relates to a supercapacitor with a double electrochemical layer that comprises at least two complexes (2, 3) and at least one spacer (4) between the two complexes (2, 3), the complexes (2, 3) and the spacer (4) being spirally wound together in order to form a coiled member (10), characterized in that it further comprises at least another complex (1) and at least another spacer (4), the other complex (1) and the other spacer (4) being spirally wound together around the coiled member (10) in order to form at least one subsequent coiled member (20), the consecutive coiled members (10, 20) being separated by an electronic insulation space.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: June 10, 2014
    Assignee: Batscap
    Inventors: Philippe Azais, Olivier Caumont, Jean-Michel Depond
  • Patent number: 8737040
    Abstract: A pseudocapacitor employs plates having an active material of a nanoparticles sized ceramic mixed ionic-electronic conductor such as may have the nominal formula of ABO3, A2BO4, AB2O4, and AO2, where A and B are metals. The active material may be prepared to promote sublattice vacancies to provide for the storage of additional charge.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: May 27, 2014
    Assignee: Wisys Technology Foundation, Inc.
    Inventors: Charles P. Gibson, Annamalai Karthikeyan
  • Patent number: 8717740
    Abstract: An electrolytic capacitor in which a capacitor element can be fixed firmly into a metal case without having adverse effects on the electrical characteristics of the electrolytic capacitor. An anode foil provided with an anode internal terminal and a cathode foil provided with a cathode internal terminal are wound or laminated through a separator to produce a capacitor element. The capacitor element is then contained in a metal case together with a driving electrolyte, and then the side surface of the metal case is caulked to press and fix the capacitor element, thus producing an electrolytic capacitor. The electrolytic capacitor is characterized in that a tape material is wound by a plurality of turns around the outer circumference of the capacitor element between the capacitor element and the caulking of the metal case such that a total thickness of the tape material is so large as to relax deformation of the capacitor element when the side surface of the metal case is caulked.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: May 6, 2014
    Assignee: Nippon Chemi-Con Corporation
    Inventors: Hirotugu Ashino, Takashi Nochi
  • Patent number: 8693165
    Abstract: A device for generating electrical energy from the heat dissipated by a heat source, comprising: a capacitor comprising two electrodes between which a ferroelectric material is present, said capacitor being arranged so as to be positioned to capture all or part of the heat dissipated by said heat source; a capacitive element a first electrode of which is connected to a first electrode of said capacitor; a recovery circuit interposed between the second electrode of said capacitor and the second electrode of the capacitive element, and able to have the current flowing between said second electrodes pass through it. a mechanism adapted to move the capacitor with respect to the heat source, said mechanism having at least one arm able to move between two positions, the capacitor being closer to the heat source in one of the two positions.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: April 8, 2014
    Assignee: STMicroelectronics (Crolles 2) SAS
    Inventors: Thomas Skotnicki, Stéphane Monfray
  • Patent number: 8693166
    Abstract: A capacitor includes a first collector made of metal foil, a first electrode layer placed on a surface of the first collector and mainly containing a carbonaceous material, a resin layer provided on the first electrode layer, a second electrode provided on the resin layer and mainly containing a carbonaceous material, a second collector provided on the second electrode layer and made of metal foil, a case accommodating the first collector, the first electrode layer, the resin layer, the second electrode, and the second collector therein, and an electrolyte accommodated in the case. The resin layer has a non-woven fabric form of fibers made of resin irregularly bonded to one another. The fibers of the resin layer intertwine with the first electrode layer. The fibers of the resin layer intertwine with the first electrode layer. This capacitor can be thin and small.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: April 8, 2014
    Assignee: Panasonic Corporation
    Inventors: Keiichi Kondou, Hideki Shimamoto, Yukihiro Shimasaki
  • Patent number: 8693168
    Abstract: There is provided an electrochemical capacitor including a lid; a case having a via, and forming a liquid chamber together with the lid; an electric storage element housed in the liquid chamber; an electrolyte housed in the liquid chamber; a wiring having a via part arranged within the via, and connecting an inside to an outside of the liquid chamber; an extraction electrode connected to the via part; an overcoating layer for coating the extraction electrode, and having an opening to expose a partial region of the extraction electrode; and a conductive adhesive layer for fixing the electric storage element to the overcoating layer, and electrically connecting the electric storage element to the extraction electrode through the opening.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: April 8, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Naoto Hagiwara, Katsuei Ishida
  • Patent number: 8681478
    Abstract: A container 11 of a surface mounting electrochemical device according to an embodiment of the invention comprises a first metal component 11a having a recess 11a1, a second metal component 11b directly welded to the first metal component 11a to close the opening of the recess 11a1. A first electrode 16a of an electric storage element 16 is electrically insulated from the container 11, and a second electrode 16b electrically conducts thereto. A first terminal 14 is electrically insulated from the container 11 and electrically conducts to the first electrode 16a of the electric storage element 16 via a relaying element 13. A second terminal 15 electrically conducts to the container 11 and the second electrode 16b of the electric storage element 16 via the container 11.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: March 25, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventor: Naoto Hagiwara
  • Patent number: 8675346
    Abstract: A mesoporous, nanocrystalline, metal oxide construct particularly suited for capacitive energy storage that has an architecture with short diffusion path lengths and large surface areas and a method for production are provided. Energy density is substantially increased without compromising the capacitive charge storage kinetics and electrode demonstrates long term cycling stability. Charge storage devices with electrodes using the construct can use three different charge storage mechanisms immersed in an electrolyte: (1) cations can be stored in a thin double layer at the electrode/electrolyte interface (non-faradaic mechanism); (2) cations can interact with the bulk of an electroactive material which then undergoes a redox reaction or phase change, as in conventional batteries (faradaic mechanism); or (3) cations can electrochemically adsorb onto the surface of a material through charge transfer processes (faradaic mechanism).
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: March 18, 2014
    Assignee: The Regents of the University of California
    Inventors: Bruce S. Dunn, Sarah H. Tolbert, John Wang, Torsten Brezesinski
  • Patent number: 8665581
    Abstract: Electrical devices having electrodes containing carbon nanotubes infused to a substrate are described herein. The electrical devices contain at least a first electrode material containing a first plurality of carbon nanotubes infused to a first substrate and a second electrode material containing a second plurality of carbon nanotubes infused to a second substrate. The first electrode material and the second electrode material are wound in a spiral configuration about a central axis. The electrical devices can be supercapacitors, which also contain at least an electrolyte in contact with the first electrode material and the second electrode material, and a first separator material disposed between the first electrode material and the second electrode material. Methods and apparatuses for making the electrical devices are also disclosed herein.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: March 4, 2014
    Assignee: Applied Nanostructured Solutions, LLC
    Inventors: Corey Adam Fleischer, Tushar K. Shah, Lawrence P. Hetzel, Harry C. Malecki
  • Patent number: 8654503
    Abstract: A capacitor having improved tolerance to humidity. The capacitor includes a packaging material and/or a dielectric material comprising a film having a water vapor transmission rate significantly lower than the dielectric films and/or packaging films used in conventional capacitors.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: February 18, 2014
    Assignee: Zoll Medical Corporation
    Inventor: Allan Scott Baucom
  • Patent number: 8654507
    Abstract: The present application is generally directed to energy storage materials such as activated carbon comprising enhanced particle packing properties and devices containing the same. The energy storage materials find utility in any number of devices, for example, in electric double layer capacitance devices and batteries. Methods for making the energy storage materials are also disclosed.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: February 18, 2014
    Assignee: EnerG2 Technologies, Inc.
    Inventors: Henry R. Costantino, Chad Goodwin, William D. Scott, Aaron M. Feaver
  • Patent number: 8638545
    Abstract: An electrode structure which provides adhesiveness between an aluminum material, as a base material, and a dielectric layer, and adhesiveness between the dielectric layers, and enables a high capacitance, even with a thick dielectric layer. An interposing layer is formed in at least one part of a region of the surface of the aluminum material between the aluminum material and the dielectric layer and includes aluminum and carbon. The dielectric layer includes dielectric particles including valve metal, and an organic substance layer formed on at least one part of a surface of the dielectric particle. A mixture layer of dielectric particles, including the valve metal and a binder, is formed on a surface of the aluminum material, and thereafter, the aluminum material is heated in a state where the aluminum material is placed in a space including a hydrocarbon-containing substance.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: January 28, 2014
    Assignee: Toyo Aluminium Kabushiki Kaisha
    Inventors: Kunihiko Nakayama, Zenya Ashitaka, Hietoshi Inoue
  • Patent number: 8614878
    Abstract: An electrode material is created by forming a thin coating or small deposits of metal oxide as an intercalation host on a carbon powder. The carbon powder performs a role in the synthesis of the oxide coating, in providing a three-dimensional, electronically conductive substrate supporting the metal oxide, and as an energy storage contribution material through ion adsorption or intercalation. The metal oxide includes one or more metal oxides. The electrode material, a process for producing said electrode material, an electrochemical capacitor and an electrochemical secondary (rechargeable) battery using said electrode material is disclosed.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: December 24, 2013
    Inventor: Fraser W. Seymour
  • Patent number: 8611070
    Abstract: The invention relates to a process for coating nanoparticles with graphene, comprising the steps of (a) providing a suspension comprising a suspension medium and nanoparticles with positive surface charge, (b) adding graphene oxide particles to the suspension from step (a), the graphene oxide particles accumulating on the nanoparticles, and (c) converting the graphene oxide particles accumulated on the nanoparticles to graphene, to graphene-coated nanoparticles comprising at least one metal, a semimetal, a metal compound and/or a semimetal compound, and to the use of these graphene-coated nanoparticles in electrochemical cells and supercapacitors, and to supercapacitors and electrochemical cells comprising these nanoparticles.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: December 17, 2013
    Assignees: BASF SE, Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V.
    Inventors: Sorin Ivanovici, Shubin Yang, Xinliang Feng, Klaus Müllen
  • Patent number: 8611069
    Abstract: Implementations and techniques for employing phase change materials in ultracapacitor devices or systems are generally disclosed.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: December 17, 2013
    Assignee: Empire Technology Development LLC
    Inventor: Ezekiel Kruglick
  • Patent number: 8599534
    Abstract: The disclosure relates to electrochemical capacitors. In particular the disclosure relates to asymmetric electrochemical capacitors and methods to improve service life and energy density.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: December 3, 2013
    Inventor: Cambis Joseph Farahmandi
  • Patent number: 8559162
    Abstract: A mesoporous carbon material, a fabrication method thereof and a supercapacitor containing the mesoporous carbon material are provided. The mesoporous carbon material includes a plurality of carbon nanotubes (CNTs) and/or metal particles and/or metal oxide particles, and a carbon matrix. The mesoporous carbon material has a plurality of mesopores formed by the carbon matrix and the carbon nanotubes and/or the metal particles and/or the metal oxide particles. The plurality of carbon nanotubes, and/or the metal particles and/or the metal oxide particles are formed substantially adjacent to the plurality of mesopores.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: October 15, 2013
    Assignee: Delta Electronics, Inc.
    Inventors: Bo-Jiun Shen, Duo-Fong Huang, Chi-Chang Chen, Hui-Ling Wen, Rong-Chang Liang
  • Patent number: 8553393
    Abstract: Disclosed is a coin type lithium ion capacitor which includes a positive electrode made of an activated carbon based positive active material and a negative electrode opposite to the positive electrode with a first separator interposed therebetween. The negative electrode includes a graphite electrode including a first current collector and a graphite based negative active material coated onto the first current collector; and a lithium metal member opposite to the graphite electrode with a second separator interposed therebetween and including a second current collector and lithium metal coated on the second current collector, in which lithium ions of the lithium metal move from the lithium metal to the positive electrode through the graphite electrode during discharge and are carried in the graphite electrode from the positive electrode during charge.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: October 8, 2013
    Assignee: Korea Institute of Energy Research
    Inventors: Chang Soo Jin, Wook Ahn, Kyoung Hee Shin, Kyu Nam Jung, Bum Suk Lee, Myung Seok Jeon