Salt Solute Patents (Class 361/505)
  • Patent number: 10975200
    Abstract: A conductive polymer composition comprising: (a) a conductive polymer; (b) a solvent; and (c) an acid or a salt.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: April 13, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Shingo Onodera, Toru Bando
  • Patent number: 10923291
    Abstract: A capacitor and a method of processing an anode metal foil are presented. The method includes electrochemically etching the metal foil to form a plurality of tunnels. Next, the etched metal foil is disposed within a widening solution to widen the plurality of tunnels. Exposed surfaces of the etched metal foil are then oxidized. The method includes removing a section of the etched metal foil, where the section of the etched metal foil includes exposed metal along an edge. The section of the etched metal foil is placed into a bath comprising water to form a hydration layer over the exposed metal on the section of the etched metal foil. The method also includes assembling the section of the etched metal foil having the hydration layer as an anode within a capacitor.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: February 16, 2021
    Assignee: Pacesetter, Inc.
    Inventors: David R. Bowen, Ralph Jason Hemphill
  • Patent number: 10283776
    Abstract: The present invention provides an electrode material comprising at least one of metal compound powder and carbon powder, the powder having an average particle size of 50 ?m or less and an activation energy E? of 0.05 eV or less. Further, the powder preferably has hopping conduction characteristics at room temperature of 25° C. Furthermore, the powder preferably has an amount of oxygen defects of 1×1018 cm?3 or more. Still further, the powder preferably has a carrier density of 1×1018 cm?3 or more. Due to above structure, there can be provided an electrode material having a high storage capacity and a high charge/discharge efficiency.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: May 7, 2019
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
    Inventors: Akito Sasaki, Hideyuki Oozu, Yoshinori Kataoka, Kuniyuki Kakushima, Wei Li, Hiroshi Iwai
  • Patent number: 9978526
    Abstract: A method for producing an electrolytic capacitor according to the present disclosure is characterized by including a first step of preparing a capacitor element that includes an anode body on which a dielectric layer is formed; a second step of impregnating the capacitor element with a first treatment solution containing a first solvent and a conductive polymer; a third step of impregnating, after the second step, the capacitor element with a second treatment solution containing a second solvent; and a fourth step of impregnating, after the third step, the capacitor element with an electrolyte solution containing a third solvent, both the second solvent and the third solvent being a protic solvent.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: May 22, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Tatsuji Aoyama, Tomoyuki Tashiro, Junya Kushizaki, Shunpei Matsushita
  • Patent number: 9928969
    Abstract: A method for pre-doping a lithium ion capacitor, including: compressing a lithium ion capacitor of the formula: C/S/A/S/C/S/A/S/C, where: /A/ is an anode coated on both sides with an anode carbon layer, and each anode carbon layer is further coated with lithium composite powder (LCP) layer; C/ is a cathode coated on one side with a layer of an cathode carbon mixture; and S is a separator; and a non-aqueous electrolyte; and conditioning the resulting compressed lithium ion capacitor, for example, at a rate of from C/20 to 4C, and the conditioning redistributes the impregnated lithium as lithium ions in the anode carbon structure. Also disclosed is an carbon coated anode having lithium composite powder (LCP) layer compressed on the carbon coated anode.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: March 27, 2018
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Rahul Suryakant Kadam
  • Patent number: 9799458
    Abstract: A capacitor electrode includes a collector, and an electrode layer disposed in contact with the collector and capable of inserting and releasing cations. The electrode layer includes first carbon material particles capable of inserting and releasing cations and second carbon material particles capable of inserting and releasing cations. The average particle diameter of primary particles of the second carbon material particles is smaller than the average particle diameter of primary particles of the first carbon material particles. In the electrode layer, the content amount of the second carbon material particles is smaller than the content amount of the first carbon material particles.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: October 24, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Kiyohiro Isii
  • Patent number: 9325041
    Abstract: An energy storage system includes, in an exemplary embodiment, a first current collector having a first surface and a second surface, a first electrode including a plurality of carbon nanotubes on the second surface of the first current collector. The plurality of carbon nanotubes include a polydisulfide applied onto a surface of the plurality of nanotubes. The energy storage system also includes an ionically conductive separator having a first surface and a second surface, with first surface of the ionically conductive separator positioned on the first electrode, a second current collector having a first surface and a second surface, and a second electrode including a plurality of carbon nanotubes positioned between the first surface of the second current collector and the second surface of the ionically conductive separator.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: April 26, 2016
    Assignee: The Boeing Company
    Inventor: Patrick John Kinlen
  • Patent number: 9218912
    Abstract: An electrochemical capacitor includes electrolytic solution, a capacitor element, and a housing. The electrolytic solution contains cations, anions, solvent formed of materials other than lactones, and a lactone component. The capacitor element includes a negative electrode, a positive electrode, and a separator. The negative electrode includes an electrode layer capable of storing the cations, and the positive electrode includes a polarizable electrode layer and confronts the negative electrode. The separator is disposed between the negative and positive electrodes, and they are layered or wound together. The capacitor element is impregnated with the electrolytic solution. The housing accommodates the capacitor element and the electrolytic solution that contains the lactone component in a quantity ranging from 0.001 wt % to 5 wt % (inclusive) relative to the solvent.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: December 22, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shotaro Doi, Hideki Shimamoto, Susumu Nomoto
  • Patent number: 9111685
    Abstract: A hydrophobic film is formed on the electrode foil surface by adding a straight-chain saturated dicarboxylic acid represented by the general formula: HOOC(CH2)nCOOH (wherein n indicates an integer from 9 to 11) to the electrolytic solution for medium/high-voltage electrolytic capacitor. Addition of a large amount of water to the electrolytic solution is allowed since this hydrophobic film suppresses the hydration reaction between the electrode foil and water. Further, it is possible to retain good lifespan property of the electrolytic capacitor in a medium/high-voltage electrolytic solution by having low specific resistance property and by suppressing the hydration decomposition of the electrode foil, wherein the electrolytic solution is azelaic acid, sebacic acid, 1-methyl-azelaic acid, 1,6-decanedicarboxylic acid, or a salt thereof dissolved in a solvent having ethylene glycol as the main component.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: August 18, 2015
    Assignee: NIPPON CHEMI-CON CORPORATION
    Inventors: Junichi Kawakami, Masao Sakakura, Masashi Ozawa
  • Patent number: 9105401
    Abstract: A wet electrolytic capacitor is provided. The capacitor contains an anode comprising an anodically oxidized pellet formed from a pressed and sintered powder, a cathode that contains a metal substrate coated with a conductive polymer, and a working electrolyte in communication with the anode and the cathode. The working electrolyte is in the form of a gel and comprises an ammonium salt of an organic acid, inorganic oxide particles, an acid, and a solvent system that comprises water. The working electrolyte has a pH value of from about 5.0 to about 8.0.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: August 11, 2015
    Assignee: AVX Corporation
    Inventors: Dirk H. Dreissig, James Steven Bates, Andrew Paul Ritter, Zebbie Lynn Sebald, Mitchell D. Weaver, Robert Hazen Pease
  • Patent number: 9093228
    Abstract: A method of producing an electric storage device includes a fastening that includes fastening a laminate that includes a lithium foil and a metal foil to at least one of a first separator and a second separator using a bonding member, and a winding that includes winding the first separator, the second separator, the laminate, a cathode, and an anode to obtain a wound element, one of the first separator and the second separator being disposed between the cathode and the anode.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: July 28, 2015
    Assignee: JM Energy Corporation
    Inventors: Motoki Mizukami, Kenji Nansaka, Nobuo Ando
  • Publication number: 20150103471
    Abstract: A method of storing charge comprising the steps of providing a capacitor comprising an anode, a cathode, and an electrolyte, wherein the electrolyte comprises a nonaqueous liquid of sufficient dielectric constant to dissociate salts soluble in the nonaqueous liquid, a composite comprising a prefabricated porous carbon electrode structure or a carbon foam substrate that is a prefabricated paper structure and a coating deposited by infiltrating the structure with iron oxide via self-limiting electroless deposition on the surface.
    Type: Application
    Filed: December 16, 2014
    Publication date: April 16, 2015
    Applicant: The Government of the United States of America, as represented by the Secretary of Navy
    Inventors: Megan B. Sassin, Jeffrey W. Long, Debra R. Rolison
  • Publication number: 20150099165
    Abstract: The invention relates to an electrolyte for a lithium-based energy storage device comprising at least one lithium salt, a solvent and at least one compound of general formula (1), and to their use in lithium-based energy storage devices.
    Type: Application
    Filed: October 31, 2012
    Publication date: April 9, 2015
    Inventors: Christian Dippel, Alexandra Lex-Balducci, Martin Winter, Miriam Kunze, René Schmitz, Romek Ansgar Müller, Stefano Passerini, Nataliya Kalinovich, Gerd-Volker Röschenthaler, Tobias Böttcher
  • Publication number: 20150093655
    Abstract: There is provided an ionic compound having attached thereto a silyloxy group. There is also provided methods of making this ionic compound as well as electrolytes, electrochemical cells and capacitors comprising this ionic compound.
    Type: Application
    Filed: April 5, 2013
    Publication date: April 2, 2015
    Inventors: Matjaz Kozelj, Abdelbast Guerfi, Julie Trottier, Karim Zaghib
  • Publication number: 20150062782
    Abstract: An aluminum electrolytic capacitor including an anode electrode, and a method for producing the anode electrode. The method includes providing an aluminum electrolyte including an ionic liquid and an aluminum salt, galvanically deposing an aluminum on an aluminum foil formed from the aluminum electrolyte, and anodically oxidizing a surface of the aluminum foil. The ionic liquid includes a pyrrolidinium cation and a halogenide. The aluminum electrolyte includes 50-70 mol. % of the aluminum salt based on a total substance amount of the ionic liquid and the aluminum salt. The galvanic deposition includes and is based on a deposition temperature ranging from 20° C. to 100° C., a current density ranging from 1 to 100 mA/cm2, an applied potential ranging from ?0.1V to ?1.0 V based on a potential of an aluminum reference electrode, and a deposition rate ranging from 1 to 50 ?m/h.
    Type: Application
    Filed: July 25, 2014
    Publication date: March 5, 2015
    Applicant: LITRONIK ENTWICKLUNGS GMBH
    Inventors: Alexander Rzany, Bernhard Hensel, Nicolas Bartilla, Bernd Pretzlaff
  • Publication number: 20150049418
    Abstract: The present invention provides a highly conductive, highly voltage-resistant, and stable liquid electrolyte solution for capacitors which does not coagulate and is free from precipitation of salts in a wide temperature range, particularly at low temperatures, shows excellent electrical characteristics, and has excellent long-term reliability. The present invention also provides an electric double-layer capacitor and a lithium ion capacitor produced using the electrolyte solution for capacitors. The present invention relates to an electrolyte solution for capacitors including: an organic solvent; and a quaternary ammonium salt or lithium salt dissolved in the organic solvent, the organic solvent containing acetonitrile and a chain alkyl sulfonic compound represented by the formula (1): wherein R1 and R2, which may be the same as or different from each other, each independently represent a straight or branched chain C1-C4 alkyl group.
    Type: Application
    Filed: March 6, 2013
    Publication date: February 19, 2015
    Inventors: Kazuyuki Kobayashi, Noriko Yamamoto
  • Publication number: 20150016024
    Abstract: Disclosed is a cathode active material having a core-shell structure. The core-shell cathode active material includes a core including a lithium transition metal oxide with excellent electrochemical properties and a shell formed by coating the surface of the core with a transition metal oxide. The formation of the shell by coating a transition metal oxide on the surface of the core comprising a lithium transition metal oxide prevents the structure of the lithium transition metal oxide from collapsing and inhibits the dissolution of manganese ions, enabling the fabrication of a hybrid capacitor with improved energy density and rate characteristics. Also disclosed is a method for producing the cathode active material.
    Type: Application
    Filed: September 19, 2013
    Publication date: January 15, 2015
    Applicant: KOREA INSITIUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Won Chang CHOI, Ji Hun PARK, Martin HALIM, Joong Kee LEE, Jung Sub KIM, Kyu-Ha LEE, Bong Jo KANG, A Young KIM, Hun Gi JUNG, Yu Jin CHAE, Joo Man WOO, Yong-Ho LEE, Tae Yong KIM
  • 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: 8913369
    Abstract: Disclosed are an aluminum electrolytic capacitor having low impedance properties and a long service life, and an electrolytic solution which enables to give such capacitor. The electrolytic solution contains a solvent containing water, a phosphorus oxoacid ion-generating compound which can generate a phosphorus oxoacid ion in an aqueous solution, and a chelating agent which can coordinate with aluminum to form an aqueous aluminum chelate complex. The electrolytic solution further contains a compound selected from the group consisting of azelaic acid and an azelaic acid salt, and a compound selected from the group consisting of formic acid, a formic acid salt, adipic acid, an adipic acid salt, glutaric acid and a glutaric acid salt. The content of azelaic acid and/or the azelaic acid salt is at least 0.03 moles per kg of the solvent.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: December 16, 2014
    Assignee: Nippon Chemi-Con Corporation
    Inventors: Masao Sakakura, Junichi Kawakami, Kazuma Okura, Shingo Takeuchi, Masashi Ozawa, Kenji Tamamitsu
  • 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: 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: 8795544
    Abstract: One object is to provide a power storage device including an electrolyte using a room-temperature ionic liquid which includes a univalent anion and a cyclic quaternary ammonium cation having excellent reduction resistance. Another object is to provide a high-performance power storage device. A room-temperature ionic liquid which includes a cyclic quaternary ammonium cation represented by a general formula (G1) below is used for an electrolyte of a power storage device. In the general formula (G1), one or two of R1 to R5 are any of an alkyl group having 1 to 20 carbon atoms, a methoxy group, a methoxymethyl group, and a methoxyethyl group. The other three or four of R1 to R5 are hydrogen atoms. A? is a univalent imide anion, a univalent methide anion, a perfluoroalkyl sulfonic acid anion, tetrafluoroborate (BF4?), or hexafluorophosphate (PF6?).
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: August 5, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kyosuke Ito, Toru Itakura
  • Publication number: 20140154590
    Abstract: The invention relates to an electrolyte, comprising at least one lithium salt, a solvent, and at least one compound according to general formula (1). The invention further relates to lithium-based energy stores comprising such an electrolyte.
    Type: Application
    Filed: August 2, 2012
    Publication date: June 5, 2014
    Applicant: WESTFALISCHE WILHELMS UNIVERSITAT MUNSTER
    Inventors: Elisabeth Kramer, Rene Schmitz, Stefano Passerini, Martin Winter
  • Publication number: 20140146440
    Abstract: A lithium-ion capacitor may include a cathode, an anode, a separator disposed between the cathode and the anode, a lithium composite material, and an electrolyte solution. The cathode and anode may be non-porous. The lithium composite material comprises a core of lithium metal and a coating of a complex lithium salt that encapsulates the core. In use, the complex lithium salt may dissolve into and constitute a portion of the electrolyte solution.
    Type: Application
    Filed: November 28, 2012
    Publication date: May 29, 2014
    Inventors: Kishor Purushottam Gadkaree, Xiaorong Liu
  • Publication number: 20140133066
    Abstract: Disclosed are an aluminum electrolytic capacitor having low impedance properties and a long service life, and an electrolytic solution which enables to give such capacitor. The electrolytic solution contains a solvent containing water, a phosphorus oxoacid ion-generating compound which can generate a phosphorus oxoacid ion in an aqueous solution, and a chelating agent which can coordinate with aluminum to form an aqueous aluminum chelate complex. The electrolytic solution further contains a compound selected from the group consisting of azelaic acid and an azelaic acid salt, and a compound selected from the group consisting of formic acid, a formic acid salt, adipic acid, an adipic acid salt, glutaric acid and a glutaric acid salt. The content of azelaic acid and/or the azelaic acid salt is at least 0.03 moles per kg of the solvent.
    Type: Application
    Filed: January 28, 2014
    Publication date: May 15, 2014
    Applicant: NIPPON CHEMI-CON CORPORATION
    Inventors: Masao SAKAKURA, Junichi KAWAKAMI, Kazuma OKURA, Shingo TAKEUCHI, Masashi OZAWA, Kenji TAMAMITSU
  • Publication number: 20140127594
    Abstract: There is provided an electrolyte solution including a solvent formed from a sulfone, and a magnesium salt dissolved in the solvent.
    Type: Application
    Filed: September 23, 2013
    Publication date: May 8, 2014
    Applicant: Sony Corporation
    Inventors: Yuri Nakayama, Hideki Kawasaki, Hiroyuki Morioka
  • Publication number: 20140127586
    Abstract: The present invention provides an aligned carbon nanotube assembly constituted of carbon nanotubes each having a defective pore on its side surface, a method of manufacturing the aligned carbon nanotube assembly, a carbon-based electrode, and a power storage device. The aligned carbon nanotube assembly is formed by aggregating a large number of carbon nanotubes aligned in parallel along the same direction and having parallel orientation. In such a state that the aligned carbon nanotube assembly remains grown, the carbon nanotube constituting the aligned carbon nanotube assembly has a defective pore on its side surface. In a raman spectrum of the aligned carbon nanotube assembly in a Raman spectrometric method, when intensity of scattered light in D-band is represented by ID and intensity of scattered light in G-band is represented by IG, an ID/IG ratio is not less than 0.80.
    Type: Application
    Filed: June 14, 2012
    Publication date: May 8, 2014
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takeshi Kamizono, Gang Xie
  • Patent number: 8675348
    Abstract: A capacitor for an implantable medical device is presented. The capacitor includes an anode, a cathode, a separator therebetween, and an electrolyte over the anode, cathode, and separator. The electrolyte includes ingredients comprising acetic acid, ammonium acetate, phosphoric acid, and tetraethylene glycol dimethyl ether. The capacitor has an operating voltage ninety percent or greater of its formation voltage.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: March 18, 2014
    Assignee: Medtronic, Inc.
    Inventors: Mark E. Viste, John D. Norton, Joachim Hossick-Schott, Anthony W. Rorvick
  • Patent number: 8675347
    Abstract: Disclosed are an aluminum electrolytic capacitor having low impedance properties and a long service life, and an electrolytic solution which enables to give such capacitor. The electrolytic solution contains a solvent containing water, a phosphorus oxoacid ion-generating compound which can generate a phosphorus oxoacid ion in an aqueous solution, and a chelating agent which can coordinate with aluminum to form an aqueous aluminum chelate complex. The electrolytic solution further contains a compound selected from the group consisting of azelaic acid and an azelaic acid salt, and a compound selected from the group consisting of formic acid, a formic acid salt, adipic acid, an adipic acid salt, glutaric acid and a glutaric acid salt. The content of azelaic acid and/or the azelaic acid salt is at least 0.03 moles per kg of the solvent.
    Type: Grant
    Filed: July 11, 2009
    Date of Patent: March 18, 2014
    Assignee: Nippon Chemi-Con Corporation
    Inventors: Masao Sakakura, Junichi Kawakami, Kazuma Okura, Shingo Takeuchi, Masashi Ozawa, Kenji Tamamitsu
  • Patent number: 8647780
    Abstract: The invention concerns novel ionic compounds with low melting point whereof the onium type cation having at least a heteroatom such as N, 0, S or P bearing the positive charge and whereof the anion includes, wholly or partially, at least an ion imidide such as (FXI0)N—(OX2F) wherein X1 and X2 are identical or different and comprise SO or PF, and their use as solvent in electrochemical devices. Said composition comprises a salt wherein the anionic charge is delocalised, and can be used, inter alia, as electrolyte.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: February 11, 2014
    Assignee: Acep Inc.
    Inventors: Christophe Michot, Michel Armand, Michel Gauthier, Nathalie Ravet
  • Patent number: 8644003
    Abstract: A process is provided for producing an electrolytic capacitor element that can uniformly form a highly electrically conductive polymer having a nano thickness level on a nano porous anode element substrate and suitable for use in high-capacitance electrolytic capacitors used in emergency power supplies and backup power supplies in electronic equipment. An oxide film and an electrically conductive polymer film are formed by pulsed constant current electrolysis of a monomer for an electrically conductive polymer and a nanoporous valve action metal in an electrolysis solution comprising an ionic liquid.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: February 4, 2014
    Assignee: National University Corporation, Tokyo University of Agriculture and Technology
    Inventors: Katsuhiko Naoi, Kenji Machida
  • Publication number: 20140016247
    Abstract: An electrochemical capacitor includes a first electrode connected to a positive terminal of a power source during the charge of the electrochemical capacitor and a second electrode connected to a negative terminal of a power source during the charge of the electrochemical capacitor. The first and the second electrodes each have a carbon material. The electrochemical capacitor further includes a porous separator to separate the first and second electrodes and to be impregnated with an almost neutral aqueous electrolyte situated between the two electrodes. The neutral aqueous electrolyte has a salt formed by a metallic cation and an anion.
    Type: Application
    Filed: September 18, 2013
    Publication date: January 16, 2014
    Applicants: UNIVERSITE D'ORLEANS, CNRS
    Inventors: Francois BEGUIN, Laurent Demarconnay, Encarnacion Raymundo-Pinero
  • Publication number: 20130316231
    Abstract: An aqueous liquid composition contains a water-based medium containing water, a polymer having at least one type of groups selected from hydroxyl groups and amino groups, and phosphonobutanetricarboxylic acid. The aqueous liquid composition contains low-cost materials having low environmental load, can retain adequate viscosity even when stored over a long term, and can form a functional coating film having excellent adhesiveness to a base material and superb durability, solvent resistance and waterproofness and capable of exhibiting various functions led by electrical conductivity and hydrophilicity.
    Type: Application
    Filed: August 1, 2013
    Publication date: November 28, 2013
    Applicant: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Yoshihiko IIJIMA, Kozaburo HAYASHI, Yosuke ICHINOMIYA
  • Publication number: 20130302702
    Abstract: The object of an exemplary embodiment of the invention is to provide a separator for an electric storage device which has small heat shrinkage in a high-temperature environment, and in which the increase of the battery temperature can be suppressed. An exemplary embodiment of the invention is a separator for an electric storage device, which comprises a cellulose derivative represented by a prescribed formula. The separator for an electric storage device can be obtained, for example, by treating a cellulose separator containing cellulose with a halogen-containing carboxylic acid or a halogen-containing alcohol.
    Type: Application
    Filed: February 21, 2012
    Publication date: November 14, 2013
    Applicant: NEC CORPORATION
    Inventor: Kazuaki Matsumoto
  • Publication number: 20130280579
    Abstract: An electrochemical cell includes solid-state, printable anode layer, cathode layer and non-aqueous gel electrolyte layer coupled to the anode layer and cathode layer. The electrolyte layer provides physical separation between the anode layer and the cathode layer, and comprises a composition configured to provide ionic communication between the anode layer and cathode layer by facilitating transmission of multivalent ions between the anode layer and the cathode layer.
    Type: Application
    Filed: March 5, 2013
    Publication date: October 24, 2013
    Inventors: Paul K. Wright, James W. Evans, Christine Ho
  • Patent number: 8542478
    Abstract: An electric double layer capacitor, a lithium ion capacitor, and a charging device including a solar cell and either of the capacitors are disclosed. The electric double layer capacitor includes a first and second light-transmitting substrates; a pair of current collectors provided perpendicular to the substrates; active material layers provided on facing planes of the current collectors; and an electrolyte in a region surrounded by the substrates and the facing active material layers. The lithium ion capacitor includes a first and second light-transmitting substrates; a positive and negative electrode active material layers provided perpendicular to the substrates; and an electrolyte in a region surrounded by the facing substrates and the positive and negative electrode active material layers.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: September 24, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Junpei Momo, Yumiko Saito, Rie Matsubara, Hiroatsu Todoriki
  • 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
  • Publication number: 20130171502
    Abstract: The present invention provides a multi-component hybrid electrode for use in an electrochemical super-hybrid energy storage device. The hybrid electrode contains at least a current collector, at least an intercalation electrode active material storing lithium inside interior or bulk thereof, and at least an intercalation-free electrode active material having a specific surface area no less than 100 m2/g and storing lithium on a surface thereof, wherein the intercalation electrode active material and the intercalation-free electrode active material are in electronic contact with the current collector. The resulting super-hybrid cell exhibits exceptional high power and high energy density, and long-term cycling stability that cannot be achieved with conventional supercapacitors, lithium-ion capacitors, lithium-ion batteries, and lithium metal secondary batteries.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 4, 2013
    Inventors: Guorong Chen, Aruna Zhamu, Xiqing Wang, Bor Z. Jang, Yanbo Wang
  • 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
  • Publication number: 20130141841
    Abstract: A wet electrolytic capacitor is provided. The capacitor contains an anode comprising an anodically oxidized pellet formed from a pressed and sintered powder, a cathode that contains a metal substrate coated with a conductive polymer, and a working electrolyte in communication with the anode and the cathode. The working electrolyte is in the form of a gel and comprises an ammonium salt of an organic acid, inorganic oxide particles, an acid, and a solvent system that comprises water. The working electrolyte has a pH value of from about 5.0 to about 8.0.
    Type: Application
    Filed: November 27, 2012
    Publication date: June 6, 2013
    Applicant: AVX CORPORATION
    Inventor: AVX CORPORATION
  • Publication number: 20130115516
    Abstract: Highly dispersed lithium titanate crystal structures having a thickness of few atomic layers level and the two-dimensional surface in a plate form are supported on carbon nanofiber (CNF). The lithium titanate crystal structure precursors and CNF that supports these are prepared by a mechanochemical reaction that applies sheer stress and centrifugal force to a reactant in a rotating reactor. The mass ratio between the lithium titanate crystal structure and carbon nanofiber is preferably between 75:25 and 85:15. The carbon nanofiber preferably has an external diameter of 10-30 nm and an external specific surface area of 150-350 cm2/g. This composite is mixed with a binder and then molded to obtain an electrode, and this electrode is employed for an electrochemical element.
    Type: Application
    Filed: May 2, 2011
    Publication date: May 9, 2013
    Inventors: Katsuhiko Naoi, Wako Naoi, Shuichi Ishimoto, Kenji Tamamitsu
  • Patent number: 8422199
    Abstract: The present invention provides an electrolyte highly reliable in charge and discharge in a high voltage condition, and an electrochemical capacitor using the same. The electrolyte of the present invention includes a solvent, an electrolyte salt having an anion having a perfluoro alkyl group represented by a following composition formula, and an acid inducing substance having a fluorine atom for an anion, characterized in that the weight ratio of the acid inducing substance is in a range of 0.0001 to 2.0 wt %: MX+[Q(Rf)yFz]X? (wherein Q is a group 13 or group 15 element in the periodic table, Rf is a perfluoro alkyl group (CnF2n+1), n is a natural number, 1?y<6, 1?z<6, MX+ is a cation of Xth valence, and X is a natural number from 1 to 3).
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: April 16, 2013
    Assignee: Panasonic Corporation
    Inventors: Shotaro Doi, Atsuro Shirakami, Kiyohiro Isii, Susumu Nomoto, Hideki Shimamoto
  • Patent number: 8400757
    Abstract: A one-side pressed terminal is applied as a first anode (cathode) lead tab terminal and the one-side pressed terminal is connected to an anode (a cathode) foil in such a manner that a position in a radial direction of a lead is shifted inward after winding. A one-side pressed terminal is applied as a second anode (cathode) lead tab terminal and the one-side pressed terminal is connected to the anode (cathode) foil in such a manner that a position in the radial direction of a lead is shifted inward after winding. Thus, while retaining characteristics as an electrolytic capacitor, connection of the anode (cathode) lead tab terminal to the anode (cathode) foil can be achieved in a stable manner.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: March 19, 2013
    Assignees: SANYO Electric Co., Ltd., SAGA SANYO INDUSTRIES Co., Ltd.
    Inventor: Kazumasa Fujimoto
  • Publication number: 20130063867
    Abstract: A mixed solvent is prepared by dissolving acetic acid and lithium acetate in a mixture of isopropanol and water. This mixed solvent together with titanium alkoxide and carbon nanofiber (CNF) were introduced into a rotary reactor, the inner tube was rotated at a centrifugal force of 66,000 N (kgms?2) for 5 minutes to form a thin film of the reactant on the inner wall of the outer tube, and sheer stress and centrifugal force were applied to the reactant to allow promotion of chemical reaction, yielding CNF on which highly dispersed lithium titanate nanoparticle precursors are supported. The obtained composite powder was heated under nitrogen atmosphere at 900° C. for 3 minutes, yielding a composite powder in which highly dispersed lithium titanate nanoparticles are supported on CNF, wherein crystallization of lithium titanate was allowed to progress.
    Type: Application
    Filed: March 31, 2011
    Publication date: March 14, 2013
    Inventors: Katsuhiko Naoi, Wako Naoi, Shuichi Ishimoto, Kenji Tamamitsu
  • Publication number: 20130052526
    Abstract: A power storage device with high output is provided, in which the specific surface area is increased while keeping the easy-to-handle particle size of its active material. The power storage device includes a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte. The negative electrode active material layer includes a negative electrode active material which is a particle in which a plurality of slices of graphite is overlapped with each other with a gap therebetween. It is preferable that the grain diameter of the particle be 1?m to 50 ?m. Further, it is preferable that the electrolyte be in contact with the gap between the slices of graphite.
    Type: Application
    Filed: August 8, 2012
    Publication date: February 28, 2013
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Junpei MOMO, Hiroatsu Todoriki, Kuniharu Nomoto
  • Patent number: 8379368
    Abstract: A method for manufacturing a lithium ion capacitor, and a lithium ion capacitor manufactured using the method are provided. The method for manufacturing a lithium ion capacitor includes: disposing a lithium metal on a capacitor cell including a cathode, a separation film, and an anode; impregnating the capacitor cell with electrolyte including a lithium salt; changing the cathode and the anode to allow lithium ions within the electrolyte to be occluded into the anode; performing a primary reaction in which the cathode and the lithium metal are short-circuited to emit anions from the cathode and lithium ions from the lithium metal and a secondary reaction that the lithium ions emitted from the lithium metal are occluded into the cathode; and recharging the cathode and the anode to allow the lithium ions, which have been occluded into the cathode and the lithium ions within the electrolyte, to be occluded into the anode.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: February 19, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hong Seok Min, Bae Kyun Kim, Hyun Chul Jung, Dong Hyeok Choi, Hak Kwan Kim
  • Patent number: 8373966
    Abstract: A structural body which includes a first dielectric layer formed on a first substrate and including first conductive particles, each surface of the first conductive particles being entirely covered with a first dielectric film; and a second dielectric layer formed on the first dielectric layer wherein a volume ratio of a dielectric in the second dielectric layer is higher than a volume ratio of a dielectric in the first dielectric layer.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: February 12, 2013
    Assignee: Fujitsu Limited
    Inventor: Yoshihiko Imanaka
  • Patent number: 8369065
    Abstract: An electric double layer capacitor (EDLC) includes an electric double layer cell and first and second external electrodes. The electric double layer cell includes a separator and at least one first polarizable electrode and at least one second polarizable electrode. The first and second external electrodes are formed at first and second side surfaces of the electric double layer cell facing each other, respectively. The first polarizable electrode includes a first current collection layer and a first active material layer formed on either surface of the first current collection layer facing the separator and the second polarizable electrode includes a second current collection layer and a second active material layer formed on either surface of the second current collection layer facing the separator.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: February 5, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Yeong Su Cho, Kang Heon Hur, Kwan Hyeong Kim, Chang Ryul Jung, Sang Kyun Lee, Sung Ho Lee, Dong Sup Park
  • Publication number: 20120328960
    Abstract: A nonaqueous solvent having excellent reduction resistance, which can be applied to an electrolyte solution, is provided. Further, a nonaqueous solvent which can be used in a wide temperature range and applied to an electrolyte solution is provided. Furthermore, a high-performance power storage device is provided. A nonaqueous solvent containing at least an ionic liquid including an alicyclic quaternary ammonium cation having one or more substituents and a counter anion to the alicyclic quaternary ammonium cation, and a freezing-point depressant is provided. A power storage device including the nonaqueous solvent for an electrolyte solution is also provided.
    Type: Application
    Filed: June 20, 2012
    Publication date: December 27, 2012
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Kyosuke ITO, Toru Itakura
  • Patent number: 8331080
    Abstract: There are provided an electrolyte for a lithium ion capacitor and a lithium ion capacitor including the same. The electrolyte for a lithium ion capacitor according to the present invention includes: a lithium salt; and a mixing solvent including i) two or more compounds selected from a group consisting of cyclic carbonate compounds, ii) one or more compounds selected from a group consisting of linear carbonate compounds represented by a specified Formula, and iii) one or more compound selected from a group consisting of propionate compound represented by a specified Formula.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: December 11, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sang Kyun Lee, Dong Hyeok Choi, Hyun Chul Jung, Bae Kyun Kim