Liquid Electrolytic Capacitor Patents (Class 361/503)
  • Publication number: 20130342965
    Abstract: A carbon nanostructure's geometry and electrical characteristics can be controlled. A method for processing a carbon nanostructure according to the present invention includes the steps of: preparing a carbon nanostructure (e.g., a carbon nanotube) (a CNT preparation step); and exposing the carbon nanotube to an energy beam (e.g., an electron beam) while vibrating the carbon nanotube (an exposure step). This facilitates modifying the carbon nanotube in length and electrical characteristics.
    Type: Application
    Filed: March 8, 2012
    Publication date: December 26, 2013
    Applicants: UNIVERSITY OF TSUKUBA, SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Jun-ichi Fujita, Takeshi Hikata, Soichiro Okubo, Risa Utsunomiya, Teruaki Matsuba
  • 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
  • Publication number: 20130323585
    Abstract: A decomposition reaction of an electrolyte solution and the like caused as a side reaction of charge and discharge is minimized in repeated charge and discharge of a lithium ion battery or a lithium ion capacitor, and thus the lithium ion battery or the lithium ion capacitor can have long-term cycle performance. A negative electrode for a power storage device includes a negative electrode current collector and a negative electrode active material layer which includes a plurality of particles of a negative electrode active material. Each of the particles of the negative electrode active material has an inorganic compound film containing a first inorganic compound on part of its surface. The negative electrode active material layer has a film in contact with an exposed part of the negative electrode active material and part of the inorganic compound film. The film contains an organic compound and a second inorganic compound.
    Type: Application
    Filed: May 21, 2013
    Publication date: December 5, 2013
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Nobuhiro Inoue, Kai Kimura, Sachiko Kataniwa, Ryota Tajima
  • 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: 8599533
    Abstract: A nanoporous templating substrate, which is an anodically oxidized alumina (AAO) substrate, is employed to form a pseudocapacitor having high stored energy density. A pseudocapacitive material is deposited conformally along the sidewalls of the AAO substrate by atomic layer deposition, chemical vapor deposition), and/or electrochemical deposition employing a nucleation layer. The thickness of the pseudocapacitive material on the walls can be precisely controlled in the deposition process. The AAO is etched to form an array of nanotubes of the PC material that are cylindrical and structurally robust with cavities therein. Because the AAO substrate that acts as scaffolding is removed, only the active PC material is left behind, thereby maximizing the energy per mass. In addition, nanotubes may be de-anchored from a substrate so that free-standing nanotubes having randomized orientations may be deposited on a conductive substrate to form an electrode of a pseudocapacitor.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: December 3, 2013
    Assignee: International Business Machines Corporation
    Inventors: Richard A. Haight, Stephen M. Rossnagel
  • Patent number: 8593788
    Abstract: An electrode for a supercapacitor includes a block copolymer and active material particles. The block copolymer is used both to bind the particles together and to act as an electrolyte. The electrode does not have a porous structure, but rather it is pressed or rolled to achieve zero porosity and to ensure good contact between the particles and the block copolymer electrolyte. Thus, the entire surface of the active particles can be accessed for charge storage. Furthermore, the volume of such an electrode is smaller than typical electrodes with the same capacity, as none of the volume is wasted with additional, non-active binder material, offering a higher effective active material loading per unit volume. Electrodes made in this way, with block copolymer electrolyte and active materials, can also form free-standing films that are easy to handle during manufacture of supercapacitors.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: November 26, 2013
    Assignee: Seeo, Inc
    Inventor: Mohit Singh
  • Publication number: 20130308249
    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: Application
    Filed: March 15, 2013
    Publication date: November 21, 2013
    Inventors: Tsuneaki TAMACHI, Ryo SATO, Kazumi TANAKA, Kensuke TAHARA, Tadahito SUZUKI, Akira SATO
  • Patent number: 8576541
    Abstract: An electrolyte system having a conductive salt dispersed in a solvent mixture, the solvent mixture having an organic nitrile solvent and a co-solvent. The concentration of the conductive salt in the electrolyte system is 1.25 molar to 3.0 molar.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: November 5, 2013
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Shrisudersan Jayaraman
  • Publication number: 20130280616
    Abstract: The present invention relates to a porous membrane containing cellulose fibers, wherein the cellulose fibers contain 5% by weight or more of cellulose fibers with a diameter of 1 ?m or more, relative to the total weight of the cellulose fibers, the mode diameter (maximal frequency) of the pore distribution determined by the mercury penetration method is less than 0.3 ?m, the air resistance per thickness of 10 ?m is from 20 to 600 seconds, and the porous membrane has a volume resistivity of 1500 ?·cm or less determined by alternate current with a frequency of 20 kHz in which the porous membrane is impregnated with 1 mol/LiPF6/propylene carbonate solution. The porous membrane according to the present invention can provide a separator for electrochemical devices with superior properties at a reasonable cost.
    Type: Application
    Filed: October 12, 2012
    Publication date: October 24, 2013
    Applicant: Tokushu Tokai Paper Co., Ltd.
    Inventors: Yoshiharu Machii, Satoshi Nemoto, Yohta Mori
  • Patent number: 8563166
    Abstract: In an electrochemical cell including a cathode 7, an anode 6, electrolyte 10, a hollow container 1 accommodating these members, and terminals extending from the inside to the outside of the hollow container 1, the terminals include a plurality of inner terminals 5a formed on the inner surface of the hollow container 1, a cathode outer terminal 5b1 formed on the outer surface of the hollow container 1, and an inner layer wire 5c formed on the inner layer of the hollow container 1 for commonly connecting the plurality of inner terminals 5a to the cathode outer terminal 5b1.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: October 22, 2013
    Assignee: Seiko Instruments Inc.
    Inventors: Hideharu Onodera, Shunji Watanabe, Masaya Kon
  • Patent number: 8564935
    Abstract: A capacitor includes a plurality of nanochannels formed in a dielectric material. A conductive film is formed over interior surfaces of the nanochannels, and a charge barrier is formed over the conductive film. An electrolytic solution is disposed in the nanochannels. An electrode is coupled to the electrolytic solution in the nanochannels to form the capacitor.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: October 22, 2013
    Assignee: International Business Machines Corporation
    Inventors: Richard A. Haight, Stephen M. Rossnagel
  • 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
  • Patent number: 8543201
    Abstract: A method of joining a connection member to a capacitor foil using a staking tool having a tip of less than 0.030? (0.762 mm) in diameter. Another embodiment couples multiple connection members of a capacitor together by edge-connecting each connection member to its substantially flush neighboring connection members. In one aspect, a capacitor includes a multi-anode stack connected at a first weld by a weld joint less than 0.060? (1.524 mm) in diameter and a tab attached to one of the anodes of the multi-anode stack at a second weld. In one aspect, an exemplary method joining one or more foils using a staking tool having a tip of less than approximately 0.060? (1.524 mm) in diameter. In another aspect, a capacitor including a capacitor case having an electrolyte therein and a high formation voltage anode foil having a porous structure and located within the capacitor case.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: September 24, 2013
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Michael J. O'Phelan, James M. Poplett, Robert R. Tong, Rajesh Iyer, Alexander Gordon Barr
  • Patent number: 8526166
    Abstract: Provided is a lithium ion capacitor. The lithium anode capacitor includes an anode including an anode active material layer including an anode current collector, first active material particles disposed on at least one surface of the anode current collector, and second active material particles disposed in pores between the first active material particles, increasing energy density of the lithium ion capacitor.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: September 3, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Dong Hyeok Choi, Bae Kyun Kim, Hak Kwan Kim
  • Publication number: 20130224631
    Abstract: The present invention relates to separators for electrochemical cells comprising (A) at least one layer comprising (a) crosslinked polyvinylpyrrolidone in the form of particles, (b) at least one binder, and (c) optionally a base structure, where the mass ratio of the crosslinked polyvinylpyrrolidone in the form of particles (a) to the sum of the mass of the binders (b) in the layer (A) has a value in the range from 99.9:0.1 to 50:50. The present invention further relates to the use of inventive separators and to apparatuses, especially electrochemical cells, comprising inventive separators.
    Type: Application
    Filed: February 25, 2013
    Publication date: August 29, 2013
    Inventors: Oliver GRONWALD, Klaus Leitner, Nicole Janssen, Christoph J. Weber, Michael Roth, Gunter Hauber, Sandra Falusi, Sigrid Geiger, Margitta Berg
  • Patent number: 8518573
    Abstract: An energy-storage device electrode core is disclosed that features relatively low-inductive impedance (and thus low equivalent series resistance (ESR)). Also disclosed is an energy-storage device electrode core that features a radii-modulated electrode core that forms extra vias to facilitate efficient heat removal away from the electrode, thus improving the performance and capabilities of an energy-storage device so equipped. The internal electrode core heat-removal vias are defined by the modulation patterns that in turn define the size and layout of the folds in the electrode, which are circumferentially collapsed about the center axis of the electrode core.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: August 27, 2013
    Assignee: Maxwell Technologies, Inc.
    Inventor: John M. Miller
  • Patent number: 8520365
    Abstract: The present invention relates generally to charge storage devices with at least one electrode having combined double layer supercapacitor, electrochemical supercapacitor and/or battery functionalities. In some embodiments, the electrode, may be composed of an ECS material, a highly-structured DLS material and a less-structured DLS material.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: August 27, 2013
    Assignee: Amperics Inc.
    Inventors: George Gruner, Ian O'Connor
  • Patent number: 8503162
    Abstract: An electrode material is created by forming a thin conformal coating of metal oxide on a highly porous carbon meta-structure. The highly porous carbon meta-structure performs a role in the synthesis of the oxide coating and in providing a three-dimensional, electronically conductive substrate supporting the thin coating of metal oxide. 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: August 6, 2013
    Inventor: Fraser W. Seymour
  • Patent number: 8493711
    Abstract: An electrode material is created by forming a thin conformal coating of metal oxide on a highly porous monolithic carbon structure. The highly porous carbon structure performs a role in the synthesis of the oxide coating and in providing a three-dimensional, electronically conductive substrate supporting the thin coating of metal oxide. 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: July 23, 2013
    Inventor: Fraser W. Seymour
  • Patent number: 8488300
    Abstract: A supercapacitor includes a first electrode, a second electrode, and a solid-state polymer electrolyte. The first electrode and the second electrode are spaced from each other and immersed in the solid-state polymer electrolyte. The first and second electrode includes a carbon nanotube structure and an electrically conductive polymer layer. The carbon nanotube structure includes a number of carbon nanotubes and a number of micropores defined between adjacent two carbon nanotubes. The electrically conductive polymer layer coats surfaces of the number of carbon nanotubes.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: July 16, 2013
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Chui-Zhou Meng, Chang-Hong Liu, Shou-Shan Fan
  • Patent number: 8477477
    Abstract: To provide an electrolyte easily manufactured at low cost, and a power storage device including such an electrolyte. The power storage device includes a positive electrode having a positive electrode current collector and a positive electrode active material, a negative electrode having a negative electrode current collector and a negative electrode active material, and an electrolyte having 1-piperidine-1-propanesulfonic acid or 1-piperidine-1-butanesulfonic acid, which is provided between the positive electrode and the negative electrode. The capacitance can be increased when water is added to the obtained electrolyte and the temperature of the power storage device rises.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: July 2, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kyosuke Ito, Kiyofumi Ogino
  • Patent number: 8475676
    Abstract: Electrolyte for use in an energy storage device such as a capacitor or supercapacitor which comprises a solvent (preferably propionitrile) and an ionic species (preferably methyltriethylammonium tetrafluoroborate). The electrolytes provide a low ESR rise rate, a high voltage and permit operation over a wide range of temperatures, which makes them beneficial for use in a range of energy storage devices such as digital wireless devices, wireless LAN devices, mobile telephones, computers, electrical or hybrid electrical vehicles.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: July 2, 2013
    Assignee: CAP-XX Limited
    Inventors: Phillip Brett Aitchison, Hung Chi Nguyen
  • Patent number: 8472163
    Abstract: A current collector for use in an electric double layer electrochemical capacitor having a sulfuric acid electrolyte. The current collector uses a conducting carbon (e.g., graphite foil) basis with p-type conductivity. A protective film covers at least a portion of the graphite foil basis. The protective film is comprised of a conducting composite material made with a conducting carbon and a conducting organic polymer with p-type conductivity. The protective film is grown on the current collector basis such that it preferably fills the pores of the current collector basis. A lug portion of the current collector basis may be protected with an insulating polymer material.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: June 25, 2013
    Assignee: Universal Supercapacitors LLC
    Inventors: Samvel Avakovich Kazaryan, Gamir Galievich Kharisov, Vladimir Alexandrovich Kazarov, Sergey Nikolaevich Razumov, Sergey Vitalievich Litvinenko
  • Publication number: 20130141840
    Abstract: A power supply for a device disposed on a substrate is provided. An electrolytic double layer capacitor disposed in a circuit to provide power to circuit components is described. Aspects of fabrication are provided.
    Type: Application
    Filed: December 5, 2012
    Publication date: June 6, 2013
    Applicant: FastCAP SYSTEMS Corporation
    Inventor: FastCAP Systems Corporation
  • Patent number: 8456801
    Abstract: A hybrid capacitor includes an electrically non-conductive rigid or semi-rigid porous honeycomb structure having cells extending along a common direction, the cells having a plurality of cross-sectional shapes. The honeycomb structure is desirably formed of a material that is stable at temperatures of 300° or more, such that high temperature processing can be used to help ensure high purity of the final product. The material of the structure may desirably be an oxide or non-oxide ceramic, such as cordierite, silicon nitride, alumina, aluminum titanate, zircon, glass, or glass-ceramic. The plurality of shapes of the cells includes larger shapes in which cells are disposed non-galvanic electrodes, with galvanic electrodes disposed in cells of other shapes.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: June 4, 2013
    Assignee: Corning Incorporated
    Inventors: Roy Joseph Bourcier, Kishor Purushottam Gadkaree, Mallanagouda Dyamanagouda Patil, Huan-Hung Sheng, Mark J. Soulliere
  • Patent number: 8456802
    Abstract: A conductive adhesive with increased thermoresistant adhesion for connection between a sheet-like collector and a polarizing electrode layer serving as the structural member of an electrode for an electric double layer capacitor, and including a conductive material and a poly-N-vinylacetamide-based binder.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: June 4, 2013
    Assignee: Japan Gore-Tex Inc.
    Inventor: Kotaro Kobayashi
  • Patent number: 8451585
    Abstract: An electric double layer capacitor includes a container including electric insulating material for housing the capacitor. At least two electrodes including granular particulate store a charge. An aqueous electrolyte, having a generally neutral pH, floods the at least two electrodes. A separator material including a porous electrical insulating and ionic conducting material separates the at least two electrodes. At least two collectors including graphite each in contact with an electrode conduct current. An elastic compression material compressing the at least two electrodes flooded by the aqueous electrolyte maintains a firm contact of the at least two collectors with material in flooded electrodes. End caps including a high conductivity material joined to the at least two collectors make external electrical connections.
    Type: Grant
    Filed: April 17, 2010
    Date of Patent: May 28, 2013
    Inventor: Peter Quinliven
  • Publication number: 20130128413
    Abstract: A capacitor includes a plurality of nanochannels formed in a dielectric material. A conductive film is formed over interior surfaces of the nanochannels, and a charge barrier is formed over the conductive film. An electrolytic solution is disposed in the nanochannels. An electrode is coupled to the electrolytic solution in the nanochannels to form the capacitor.
    Type: Application
    Filed: January 18, 2013
    Publication date: May 23, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: INTERNATIONAL BUSINESS MACHINES CORPORATION
  • Publication number: 20130128473
    Abstract: There is provided a method for producing a capacitor which is capable of producing a capacitor having a high withstand voltage and low leakage current, the method for producing a capacitor which is a method for producing a capacitor having a substrate serving as one electrode, a dielectric layer formed on top of the substrate, and the other electrode formed on top of the dielectric layer, the method including a step for forming an amorphous titanium oxide layer which is to become the dielectric layer on top of the substrate by anodizing the substrate, which is composed of titanium or titanium alloy, in an electrolyte solution containing hydrogen peroxide and having a temperature of 3° C. or less; and a step for forming the other electrode on top of the dielectric layer.
    Type: Application
    Filed: January 14, 2013
    Publication date: May 23, 2013
    Inventors: Akihiko SHIRAKAWA, Koji TOKITA, Chunfu YU
  • Publication number: 20130128414
    Abstract: A sealing member for a capacitor is formed of an elastic material, and has a circular cylindrical shape extending along an axial direction. The sectional view perpendicular to the axial direction shows a circular shape. Further, a pair of through-holes is formed parallel to the axial direction. The shape of each through-hole in the sectional view perpendicular to the axial direction of the sealing member is composed of a first arc and a second arc. The first arc protrudes toward the circumference of the sealing member. The second arc protrudes toward the center of the sealing member and has a curvature smaller than that of the first arc.
    Type: Application
    Filed: November 16, 2012
    Publication date: May 23, 2013
    Applicant: PANASONIC CORPORATION
    Inventor: PANASONIC CORPORATION
  • Publication number: 20130120909
    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: Application
    Filed: October 31, 2012
    Publication date: May 16, 2013
    Applicant: TAIYO YUDEN CO., LTD.
    Inventor: Taiyo Yuden Co., Ltd.
  • Patent number: 8427813
    Abstract: Provided is a new supercapacitor electrode material, comprising multiple interpenetrating networks of nanowires. More specifically, an interpenetrating network of metal oxide nanowires and an interpenetrating network of electrically conductive nanowires may form a composite film having a hierarchal porous structure. This hierarchically porous, interpenetrating network structure can provide the composite film with high capacitance, electrical conductivity and excellent rate performance. The present invention can be generalized towards other capacitor composites, opening a new avenue for a large spectrum of device applications.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: April 23, 2013
    Assignee: The Regents of the University of California
    Inventors: Yunfeng Lu, Zheng Chen
  • Patent number: 8427811
    Abstract: An electrical double-layer capacitor electrode with excellent capacitance characteristics is obtained together with a manufacturing method therefor. Paper-molded sheet 2 of carbon nanotubes is integrated with etched foil 1 constituting a collector, by means of bumps and indentations 1a formed on the surface of etched foil 1 to prepare an electrical double-layer capacitor electrode. Alternatively, carbon nanotubes 4 grown around core catalyst particles on substrate 3 are integrated with etched foil 1 by means of bumps and indentations 1a formed on the surface of etched foil 1 to prepare an electrical double-layer capacitor electrode. To manufacture these electrodes, this carbon nanotube sheet 2 or substrate 3 with carbon nanotubes grown thereon is laid over bumps and indentations 1a on the surface of etched foil 1, 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: September 29, 2008
    Date of Patent: April 23, 2013
    Assignee: Nippon Chemi-Con Corporation
    Inventors: Kenji Machida, Shunzo Suematsu, Kenji Tamamitsu
  • Patent number: 8422198
    Abstract: There is provided an electric double layer capacitor package and a method of manufacturing the same. The electric double layer capacitor package includes an exterior case formed of insulating resin and having therein one or more partitions providing a plurality of housing spaces; a plurality of capacitor cells disposed in the plurality of housing spaces, respectively, each capacitor cell including first and second electrodes and a separator interposed between the first and second electrodes; and an internal series-connection terminal buried in each of the partitions and connecting the plurality of capacitor cells in series.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: April 16, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sang Kyun Lee, Jung Eun Noh, Bae Kyun Kim
  • Patent number: 8422197
    Abstract: The instant article of manufacture is made by applying optical energy to one or more layers of nanoparticulate materials under predetermined conditions to produce a nanostructure. The nanostructure has layers of optically fused nanoparticles including a predetermined pore density, a predetermined pore size, or both. The predetermined conditions for applying the optical energy may include a predetermined voltage, a predetermined duration, a predetermined power density, or combinations thereof.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: April 16, 2013
    Assignee: Applied Nanotech Holdings, Inc.
    Inventors: Zvi Yaniv, Nan Jiang, James P. Novak, Richard L. Fink
  • Publication number: 20130089790
    Abstract: A self-supporting carbon electrode can include, or consist essentially of, nanostructured carbon, for example, oxygen-functionalized nanostructured carbon.
    Type: Application
    Filed: October 11, 2011
    Publication date: April 11, 2013
    Inventors: Hye Ryung Byon, Seung Woo Lee, Betar Gallant, Yang Shao-Horn, Paula Hammond, Nasim Hyder
  • Publication number: 20130083454
    Abstract: A capacitor and a manufacturing method thereof with improved capacitance density, simplified production process, and/or improved high frequency characteristic without having to form a nano-scale pattern are provided. A capacitor element 12 includes a dielectric layer made of porous oxide substrate, first and second internal electrodes formed within holes of the porous oxide substrate, a first external electrode electrically connected to the first internal electrode, a second external electrode electrically connected to the second internal electrodes.
    Type: Application
    Filed: August 24, 2012
    Publication date: April 4, 2013
    Applicant: TAIYO YUDEN CO., LTD.
    Inventor: Hidetoshi MASUDA
  • Patent number: 8411414
    Abstract: The present invention relates to a metal oxide electrode material, an electrochemical capacitor using the same, and a method for producing the same. More particularly, the present invention relates to a metal oxide electrode material substituting a sublattice location of metal for one or more kinds of different metals, an electrochemical capacitor using the same, and a method for producing the same in metal oxides constituting an electrochemical capacitor electrode.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: April 2, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Dong Hyeok Choi, Hyun Chul Jung, Jun Hee Bae, Hak Kwan Kim
  • Patent number: 8411413
    Abstract: An EDLC device in which the double layer capacitors themselves are produced lithographically. The resultant EDLC can be of any capacitance and voltage combination for a particular application. The entire lithographically formed entity can be housed in a single container and rated according to its capacitance and voltage standoff characteristics. Through material control processes, the electrochemical composites developed onto the current collector is unilaterally equalized, providing the desired distributed voltage standoffs, thus promoting the ability to design high voltage independent cells without the normal electronic balancing circuitry associated with multiple series-connected electrochemical cells.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: April 2, 2013
    Assignee: Ioxus, Inc.
    Inventor: Thor E. Eilertsen
  • Patent number: 8404134
    Abstract: A method of manufacturing a electrode foil composed of a valve metal layer of a first valve metal and a metal foil of a second valve metal supporting the valve metal layer, the method includes coating fine particles of the first valve metal with a resin to form composite fine particles, forming the composite fine particles into an aerosol, jetting the aerosol to the metal foil in an atmosphere under a reduced pressure, depositing the composite fine particles onto the metal foil to form a aerosol deposition layer, and removing selectively the resin from the aerosol deposition layer to form the valve metal layer.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: March 26, 2013
    Assignee: Fujitsu Limited
    Inventors: Yoshihiko Imanaka, Hitoshi Yamada, Hideyuki Amada
  • Patent number: 8405957
    Abstract: An electrochemical device having excellent safety at a high temperature is provided by using a separator for an electrochemical device, which is made of a porous film including a first separator layer and a second separator layer. The first separator layer includes, as a main ingredient, at least one kind of resin selected from the group consisting of resin A that has a melting point in a range of 80° C. to 130° C., and resin B that absorbs a nonaqueous electrolyte and swells due to heating and whose swelling degree is increased as the temperature rises, the second separator layer includes, as a main ingredient, a filler that has a heat-resistant temperature of not lower than 150° C., and at least one of the first separator layer and the second separator layer includes flakes.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: March 26, 2013
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Hideaki Katayama, Toshihiro Abe, Nobuaki Matsumoto, Yoshinori Sato
  • Patent number: 8405956
    Abstract: A wet electrolytic capacitor that includes a porous anode body that contains a dielectric layer formed by anodic oxidation; a cathode that includes a metal substrate coated with a conductive polymer; and an aqueous electrolyte disposed in contact with the cathode and the anode is provided. The electrolyte includes a salt of a weak organic acid and water. The electrolyte has a pH of from about 5.0 to about 8.0 and an ionic conductivity of from about 0.5 to about 80 milliSiemens per centimeter or more, determined at a temperature of 25° C.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: March 26, 2013
    Assignee: AVX Corporation
    Inventors: Dirk H. Dreissig, John Galvagni
  • Patent number: 8390987
    Abstract: A capacitor includes a plurality of nanochannels formed in a dielectric material. A conductive film is formed over interior surfaces of the nanochannels, and a charge barrier is formed over the conductive film. An electrolytic solution is disposed in the nanochannels. An electrode is coupled to the electrolytic solution in the nanochannels to form the capacitor.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: March 5, 2013
    Assignee: International Business Machines Corporation
    Inventors: Richard A. Haight, Stephen M. Rossnagel
  • Patent number: 8390986
    Abstract: Provided is a high power super capacitor including: a bobbin; an electrode assembly being wound into the bobbin to be in a jellyroll type; a conductive connection member being formed in each of one end and another end of the electrode assembly using electric energy; and a plug being inserted into each of one end and another end of the bobbin, and being bonded with the conductive connection member using electric energy to be electrically connected to the electrode assembly.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: March 5, 2013
    Assignee: Samhwa Capacitor Co., Ltd.
    Inventors: Young Joo Oh, Jung Rag Yoon, Kyung Min Lee, Sang Won Lee
  • Publication number: 20130049692
    Abstract: A reversible storage system for electric energy, including charging or discharging surfaces as a positive collector terminal and a charging or discharging area as a negative collector terminal and a flow electrode with a pumpable dispersion with particles storing electric energy and at least one supply line and at least one drain line for the pumpable dispersion. The pumpable dispersion includes particles storing electric energy in a capacitive and/or chemical fashion, having an average grain size distribution: 1 nM to 500 ?m. For chemically storing particles, the negative and the positive collector terminals have a planar shape with a single exterior closed border and with their planar sides each contacting an ion-selective diaphragm or spacers, and the pumpable dispersion is arranged on a side facing away from the planar side of the respective collector, contacting the ion-selective diaphragm or spacers, and the dispersion at least partially penetrates the respective collector.
    Type: Application
    Filed: August 29, 2011
    Publication date: February 28, 2013
    Applicant: ARYS GMBH
    Inventor: Bernd Kuhs
  • Publication number: 20130050903
    Abstract: Electrodes and electrochemical capacitors including the same including an electrode active material layer having two layers or more formed on a current collector, wherein the electrode active material layer has a gradient of the specific surface area value to the electric conductivity along a thickness direction of a current collector. Exemplary embodiments manufacture the electrodes having the gradient of the specific surface area value to the electricity conductivity along the thickness direction of the current collector by forming the electrode active material layer having compositions in which a kind of electrode active materials and conductive materials are different along the thickness direction of the current collector. The exemplary embodiments can increase the capacitance of the electrochemical capacitor including the electrode and lower the electric resistance thereof, by appropriately controlling the resistance and capacitance value of the electrode.
    Type: Application
    Filed: May 10, 2012
    Publication date: February 28, 2013
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Hak Kwan KIM, Jun Hee Bae, Bae Kyun Kim, Ho Jin Yun
  • Patent number: 8385052
    Abstract: A capacitor containing an electrochemical cell that includes ruthenium oxide electrodes and an aqueous electrolyte containing a polyprotic acid (e.g., sulfuric acid) is provided. More specifically, the electrodes each contain a substrate that is coated with a metal oxide film formed from a combination of ruthenium oxide and inorganic oxide particles (e.g., alumina, silica, etc.). Without intending to be limited by theory, it is believed that the inorganic oxide particles may enhance proton transfer (e.g., proton generation) in the aqueous electrolyte to form hydrated inorganic oxide complexes (e.g., [Al(H2O)63+] to [Al2(H2O)8(OH2)]4+). The inorganic oxide thus acts as a catalyst to both absorb and reversibly cleave water into protons and molecular bonded hydroxyl bridges. Because the anions (e.g.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: February 26, 2013
    Assignee: AVX Corporation
    Inventors: Jessica M. Smith, Lee Shinaberger, Bob Knopsnyder, Gang Ning, Bharat Rawal, Dirk Dreissig