With Significant Electrolyte Patents (Class 361/504)
  • Patent number: 11456120
    Abstract: An electrolytic capacitor includes an anode body, a cathode body, and a conductive polymer and a liquid component that are disposed between the anode body and the cathode body. The liquid component contains an acid component, a base component, and an aromatic additive. The acid component includes at least one of an aromatic carboxylic acid and an aromatic carboxylic acid derivative. The at least one of the aromatic carboxylic acid and the aromatic carboxylic acid derivative includes at least two carboxy groups and at least one aromatic ring. A content proportion of the base component in the liquid component is more than or equal to 1% by mass. The aromatic additive includes an electron withdrawing group and an electron donating group. A content ratio of the aromatic additive contained in the liquid component is more than or equal to 50 parts by mass with respect to 100 parts by mass of the conductive polymer.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: September 27, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuichiro Tsubaki, Kazuyo Saito, Tatsuji Aoyama
  • Patent number: 11064674
    Abstract: An automatic animal processing device for automatically processing a domestic animal from its stall the animal while restraining the animal and without impeding passage in the aisle. The animal processing device, while operating, allows a person to walk-by the system with minimal constraints. The animal processing device may be a milking machine may be a milking machine having a milking head assembly and a cleaning system. The animal processing device may be mounted on a movable platform, such that the processing device may be automatically moved from one stall to the next. For installations in which the processing device is installed on tracks in the middle of two rows of animals, the processing device may be rotatable on its movable platform, such that it may process the animals of both sides of the aisle.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: July 20, 2021
    Assignee: LE GROUPE ROVIBEC INC.
    Inventors: Victor Rousseau, Gilles Smith, Mario Leblanc, Michael Provencher, Gilles Ouellet
  • Patent number: 11004616
    Abstract: A low leakage electrolytic capacitor includes a winding-type capacitor element, a hybrid electrically conductive medium and a package body. The winding-type capacitor element includes an anode foil, a cathode foil, and a separator interposed between the anode foil and the cathode foil. The hybrid electrically conductive medium is impregnated in the winding-type capacitor element and includes an electrically conductive polymer, an auxiliary polymer, an ion liquid, and a carbon filler. The package body encloses the winding-type capacitor element and the hybrid electrically conductive medium.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: May 11, 2021
    Assignee: APAQ TECHNOLOGY CO., LTD.
    Inventors: Ming-Tsung Chen, Chung-Jui Su
  • Patent number: 10566142
    Abstract: A solid electrolytic capacitor which exhibits excellent characteristics for high voltage applications of 80 WV or more and a method for manufacturing this solid electrolytic capacitor are provided. This solid electrolytic capacitor includes a capacitor element 10 which is obtained by winding an anode foil 1 and a cathode foil 2, with a separator 3 interposed therebetween, the capacitor element 10 includes a solid electrolyte layer, and a void part in the capacitor element 10 is filled with an electrolyte solution, the electrolyte solution contains an ammonium salt of an aliphatic carboxylic acid as a solute and a polyhydric alcohol as a solvent, and the addition amount of the acid serving as the solute relative to the solvent is 0.6 mol/kg or less.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: February 18, 2020
    Assignee: Nippon Chemi-Con Corporation
    Inventors: Kenta Sato, Masao Sakakura, Kazuya Koseki
  • Patent number: 10535471
    Abstract: A method of forming an electrolytic capacitor is provided. The method includes obtaining an unverified mineral sample from a mine site, analyzing the unverified mineral sample via quantitative mineralogical analysis and comparing data collected during the quantitative mineralogical analysis for the unverified mineral sample to data in a database that corresponds to quantitative mineralogical analysis collected for verified mineral samples sourced from one or more mine sites from a conflict-free geographic region to determine if the unverified mineral sample is sourced from one or more mine sites from the conflict-free geographic region. If it is determined that the unverified mineral sample is sourced from one or more mine sites from the conflict-free geographic region, the method then involves converting the unverified mineral sample into an anode for the electrolytic capacitor. The electrolytic capacitor can be a solid electrolytic capacitor or a wet electrolytic capacitor.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: January 14, 2020
    Assignee: AVX Corporation
    Inventors: William A. Millman, Jan Loun
  • Patent number: 10431390
    Abstract: An electrolytic capacitor includes an anode body having a dielectric layer on a surface of the anode body, a cathode body, and an electrolytic solution interposed between the anode body and the cathode body. The electrolytic solution contains a first ester compound and a second ester compound. The first ester compound is a condensate of boric acid and a sugar alcohol. The second ester compound contains at least one condensate selected from the group consisting of a condensate of boric acid and a monool compound and a condensate of boric acid and a polyol compound excluding a sugar alcohol.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: October 1, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yuichiro Tsubaki, Tatsuji Aoyama
  • Patent number: 10262806
    Abstract: An electrolytic capacitor includes a capacitor element and an electrolyte solution. The capacitor element includes: an anode foil on which a dielectric layer is formed; a cathode foil which is opposite to the anode foil and on which an inorganic conductive layer is formed; and a conductive polymer layer that is interposed between the anode foil and the cathode foil, the conductive polymer layer including a conductive polymer. The cathode foil has a roughened surface on which the inorganic conductive layer is formed. And the conductive polymer layer is a layer formed with use of a dispersion or a solution containing the conductive polymer.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: April 16, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Yasuhiro Tsuda
  • Patent number: 10002717
    Abstract: The present invention provides for high performance lithium-ion capacitor laminate cells that include positive electrodes, negative electrodes and organic solvent electrolyte with lithium salt, and a method for making said high performance lithium-ion capacitor laminate cells. These high performance lithium-ion capacitor laminate cells of the present invention, include a negative electrode which is pre-doped with sufficient lithium ions by employing lithium sources including lithium powder known as SLMP or thin lithium films on the surface of negative electrodes, and this pre-doping with placing lithium sources on negative electrode surface results in LIC laminate cells with considerably higher performance in specific energy, specific power and cycle life.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: June 19, 2018
    Assignee: GENERAL CAPACITOR, LLC
    Inventors: Wanjun Cao, Harry Chen
  • Patent number: 9979010
    Abstract: Provided is a non-aqueous lithium-type electrical storage element having both high output and high capacity per volume. The non-aqueous lithium-type electrical storage element relevant to the present invention is a non-aqueous lithium-type electrical storage element having: an electrode body laminated with a positive electrode having a positive electrode active material layer including a positive electrode active material, and a positive electrode current collector, a separator, and a negative electrode having a negative electrode active material layer including a negative electrode active material, and a negative electrode current collector; a non-aqueous electrolytic solution including a lithium ion; and an outer casing.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: May 22, 2018
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventor: Tomotaka Hashimoto
  • Patent number: 9466432
    Abstract: A method for producing a conductive polymer dispersion liquid includes preparing an emulsion of a polyanion adsorbed on a conductive polymer precursor monomer by emulsifying a blended liquid obtained by blending the conductive polymer precursor monomer, the polyanion, and an aqueous solvent; and forming a dispersoid of a conductive polymer by chemical oxidative polymerization with addition of an oxidant to the emulsion. Furthermore, by using this conductive polymer dispersion liquid to provide an electrolytic capacitor, the ESR of the capacitor can be reduced.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: October 11, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tatsuji Aoyama, Ayumi Kochi, Yukihiro Shimasaki
  • Patent number: 9401245
    Abstract: A method for producing a conductive polymer dispersion liquid includes preparing an emulsion of a polyanion adsorbed on a conductive polymer precursor monomer by emulsifying a blended liquid obtained by blending the conductive polymer precursor monomer, the polyanion, and an aqueous solvent; and forming a dispersoid of a conductive polymer by chemical oxidative polymerization with addition of an oxidant to the emulsion. Furthermore, by using this conductive polymer dispersion liquid to provide an electrolytic capacitor, the ESR of the capacitor can be reduced.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: July 26, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tatsuji Aoyama, Ayumi Kochi, Yukihiro Shimasaki
  • Patent number: 9190214
    Abstract: An improved capacitor, and method for making the capacitor, is described. The capacitor has an anode and a dielectric on the anode. A cathode layer is on the dielectric wherein the cathode layer comprises at least one conductive layer and an insulative adhesion enhancing layer.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: November 17, 2015
    Assignee: KEMET ELECTRONICS CORPORATION
    Inventors: Antony P. Chacko, Debra L. Naramore
  • Patent number: 9105399
    Abstract: A solid electrolytic capacitor according to an aspect of the present invention includes an anode conductor including a porous valve metal body, a dielectric layer formed on a surface of the anode conductor, and a solid electrolyte layer including a conductive polymer layer formed on a surface of the dielectric layer, in which the solid electrolyte layer includes a first solid electrolyte layer formed on a surface of the dielectric layer, and a second solid electrolyte layer formed on a surface of the first solid electrolyte layer, and at least one continuous or discontinuous layer containing an amine compound exists between the first and second solid electrolyte layers, and inside the second solid electrolyte layer.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: August 11, 2015
    Assignee: NEC TOKIN CORPORATION
    Inventors: Masanori Takahashi, Satoshi Iwai, Masami Ishijima
  • Patent number: 9076592
    Abstract: A wet electrolytic capacitor that contains an anodically oxidized porous anode body, a cathode containing a metal substrate coated with a conductive coating, and a working electrolyte that wets the dielectric on the anode. The conductive coating is formed through anodic electrochemical polymerization (“electro-polymerization”) of a microemulsion on the surface of the metal substrate. The microemulsion is a thermodynamically stable, isotropic liquid mixture that contains a precursor monomer, sulfonic acid, nonionic surfactant, and solvent.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: July 7, 2015
    Assignee: AVX Corporation
    Inventors: David Masheder, Mitchell D. Weaver
  • Publication number: 20150147663
    Abstract: An electrical energy storage device 20 is disclosed as a secondary battery device 22 having an anode 28 containing Aluminum and Indium and a cathode 38 that includes an electroactive layer 42 with a host lattice 44 having a conjugated system with delocalized it electrons. A dopant 48 containing Aluminum is bonded with and intercalated in the host lattice 44. A membrane 34 of cellulose is wetted with a non-aqueous electrolyte 24 containing glycerol and first ions 26 containing Aluminum and having a positive charge and second ions 27 containing Aluminum and having a negative charge, and is sandwiched between the anode 28 and the cathode 38. A method for constructing a secondary battery device 22 is disclosed as well, including steps for producing the electrolyte 24, the anode 28, and the cathode 38 including the dopant 48.
    Type: Application
    Filed: January 28, 2015
    Publication date: May 28, 2015
    Inventor: Alexandre M. Iarochenko
  • 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: 9030803
    Abstract: An electrochemical energy storage system includes a positive electrode, a negative electrode disposed proximally to and not in contact with the positive electrode, and a non-aqueous electrolyte, wherein the positive electrode and the negative electrode are immersed in the non-aqueous electrolyte, and a case is presented in the energy storage system to accommodate the non-aqueous electrolyte, the positive electrode, and the negative electrode. The positive electrode has a porous matrix having a plurality of micrometer sized pores and nanostructured metal oxides, wherein the porous matrix is a 3-dimensional (3D) mesoporous metal or a 3D open-structured carbonaceous material, and the nanostructured metal oxides are coated inside the plurality of pores of the porous matrix. The non-aqueous electrolyte includes organic salts having acylamino group and lithium salts characterized as LiX, wherein Li is lithium and X comprises ClO4?, SCN?, PF6?, B(C2O4)2?, N(SO2CF3)2?, CF3SO3?, or the combination thereof.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: May 12, 2015
    Assignee: National Synchrotron Radiation Research Center
    Inventors: Ming Jay Deng, Jeng Kuei Chang, Jin Ming Chen, Kueih Tzu Lu
  • Publication number: 20150127060
    Abstract: A hermetically sealed capacitor and method of manufacturing are provided. The hermatically sealed capacitor includes an anode element having an anode wire and a feed through barrell, a cathode element, a first case portion having a first opening portion and a second case portion having a second opening portion. The first and second opening portions form an opening configured to mate with the feed through barrel. The first opening portion may include a slot portion configured to receive the feed through barrel. The hermatically sealed capacitor may also include electrolytic solution disposed between the first and second case portions.
    Type: Application
    Filed: February 3, 2012
    Publication date: May 7, 2015
    Applicant: VISHAY SPRAGUE, INC.
    Inventors: Nola Evans, Leonid Statkov, Tatyana Raich
  • 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: 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: 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: 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: 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
  • Publication number: 20150077902
    Abstract: A wet electrolytic capacitor that contains a casing within which is positioned an anode formed from an anodically oxidized sintered porous body and a fluidic working electrolyte is provided. The casing contains a conductive coating disposed on a surface of a metal substrate. The casing contains a metal substrate coated with a conductive coating. The conductive coating contains a conductive polymer layer formed through anodic electrochemical polymerization (“electro-polymerization”) of a colloidal suspension on the surface of the metal substrate. The conductive coating also contains a precoat layer that is discontinuous in nature and contains a plurality of discrete projections of a conductive material that are deposited over the surface of the metal substrate in a spaced-apart fashion so that they form “island-like” structures.
    Type: Application
    Filed: September 16, 2013
    Publication date: March 19, 2015
    Applicant: AVX Corporation
    Inventors: Jan Petrzilek, Martin Biler, Mitchell D. Weaver
  • Publication number: 20150077901
    Abstract: A wet electrolytic capacitor that contains a casing within which is positioned an anode formed from an anodically oxidized sintered porous body and a fluidic working electrolyte is provided. The casing contains a composite coating disposed on a surface of a metal substrate. The composite coating includes a noble metal layer that overlies the metal substrate and a conductive polymer layer that overlies the noble metal layer.
    Type: Application
    Filed: September 16, 2013
    Publication date: March 19, 2015
    Applicant: AVX Corporation
    Inventor: Jan Petrzilek
  • Publication number: 20150077900
    Abstract: A wet electrolytic capacitor that contains a casing within which is positioned an anode formed from an anodically oxidized sintered porous body and a fluidic working electrolyte is provided. The casing contains a metal substrate over which is disposed a hydrogen protection layer that contains a plurality of sintered agglomerates formed from a valve metal composition. The present inventors have discovered that through careful selection of the relative particle size and distribution of the agglomerates, the resulting protection layer can effectively absorb and dissipate hydrogen radicals generated during use and/or production of the capacitor, which could otherwise lead to embrittlement and cracking of the metal substrate.
    Type: Application
    Filed: September 16, 2013
    Publication date: March 19, 2015
    Applicant: AVX Corporation
    Inventor: Jan Petrzilek
  • 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: 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: 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: 8971019
    Abstract: A wet electrolytic capacitor that contains an anodically oxidized porous anode body, a cathode containing a metal substrate coated with a conductive coating, and a working electrolyte that wets the dielectric on the anode. The conductive coating contains an alkyl-substituted poly(3,4-ethylenedioxythiophene) having a certain structure. Such polymers can result in a higher degree of capacitance than many conventional types of coating materials. Further, because the polymers are generally semi-crystalline or amorphous, they can dissipate and/or absorb the heat associated with the high voltage. The degree of surface contact between the conductive coating and the surface of the metal substrate may also be enhanced in the present invention by selectively controlling the manner in which the conductive coating is formed.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: March 3, 2015
    Assignee: AVX Corporation
    Inventor: Martin Biler
  • Patent number: 8971020
    Abstract: A wet electrolytic capacitor that contains an anodically oxidized porous anode body, a cathode containing a metal substrate coated with a conductive coating, and a working electrolyte that wets the dielectric on the anode. The conductive coating contains a conductive copolymer having at least one thiophene repeating unit, as well as a pyrrole repeating unit and/or aniline repeating unit.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: March 3, 2015
    Assignee: AVX Corporation
    Inventors: Martin Biler, Jan Petrzilek, Dirk H. Dreissig, Mitchell D. Weaver
  • Patent number: 8964357
    Abstract: An electric double layer capacitor with a low resistance value is disclosed. The electric double layer capacitor includes an electrochemical device in the inside of a housing container and capable of achieving charge and discharge via external terminals, wherein the electrochemical device includes a pair of electrodes, a separator disposed between the pair of electrodes, and an electrolytic solution with which the pair of electrodes and the separator are impregnated; when a volume between the pair of electrodes is designated as Ve, and a volume of a void in an inter-electrode part of the separator disposed between the pair of electrodes is designated as Se, an inter-electrode part void ratio Re is defined as Re=Se/Ve×100 (%); and when a thickness of the inter-electrode part is designated as L2 (?m), and a separator evaluation index Ie is defined as Ie=L2/Re (?m/%), a relation of Ie?1.0 (?m/%) is satisfied.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 24, 2015
    Assignee: Seiko Instruments Inc.
    Inventors: Tsuneaki Tamachi, Ryo Sato, Kazumi Tanaka, Kensuke Tahara, Tadahito Suzuki, Akira Sato
  • 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: 8920669
    Abstract: The present invention relates to electrolyte systems and electrochemical cells comprising conductive salts having different anionic and/or cationic radii.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: December 30, 2014
    Assignee: Merck Patent GmbH
    Inventors: Michael Schmidt, Guenter Semrau
  • 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: 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: 8885318
    Abstract: A hard start capacitor replacement unit has a plurality of capacitors in a container sized to fit in existing hard start capacitor space. The capacitors are 4 metallized film capacitors wound in a single cylindrical capacitive element. The container has a common terminal and capacitors value terminals for the plurality of capacitors, which may be connected singly or in combination to provide a selected capacitance. An electronic or other relay connects the selected capacitance in parallel with a motor run capacitor. The hard start capacitor replacement unit is thereby adapted to replace a wide variety of hard start capacitors.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 11, 2014
    Assignee: American Radionic Company, Inc.
    Inventor: Richard Stockman
  • 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: 8804309
    Abstract: Double-layer capacitors capable of operating at extremely low temperatures (e.g., as low as ?80° C.) are disclosed. Electrolyte solutions combining a base solvent (e.g., acetonitrile) and a cosolvent are employed to lower the melting point of the base electrolyte. Example cosolvents include methyl formate, ethyl acetate, methyl acetate, propionitrile, butyronitrile, and 1,3-dioxolane. A quaternary ammonium salt including at least one of triethylmethylammonium tetrafluoroborate (TEMATFB) and spiro-(1,1?)-bipyrrolidium tetrafluoroborate (SBPBF4), is used in an optimized concentration (e.g., 0.10 M to 0.75 M), dissolved into the electrolyte solution. Conventional device form factors and structural elements (e.g., porous carbon electrodes and a polyethylene separator) may be employed.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: August 12, 2014
    Assignee: California Institute of Technology
    Inventors: Erik J. Brandon, Marshall C. Smart, William C. West
  • Patent number: 8804311
    Abstract: To provide an electrolyte solution, which contains an electrolyte compound, a molecular structure of which contains a molecular chain containing a repeating unit of alkylene oxide, and contains quaternary ammonium cations at both terminals of the molecular chain.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: August 12, 2014
    Assignee: Fujitsu Limited
    Inventors: Masaaki Sasa, Tamotsu Yamamoto, Tsutomu Tanaka, Kensuke Yoshida
  • 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
  • Publication number: 20140211370
    Abstract: The present invention relates to an electrochemical energy storage device referred to herein as a Metal/Ion Pseudo-Capacitor (MIPC). The MIPC stores charge through reversible metal electro-deposition and dissolution processes as anode functionality and ion adsorption/desorption processes, faradaic processes or both as cathode functionality.
    Type: Application
    Filed: January 24, 2014
    Publication date: July 31, 2014
    Applicant: IONOVA TECHNOLOGIES, INC.
    Inventor: Fraser Seymour
  • 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: 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