Double Layer Electrolytic Capacitor Patents (Class 361/502)
  • Patent number: 11118073
    Abstract: The present disclosure provides supercapacitors that may avoid the shortcomings of current energy storage technology. Provided herein are electrochemical systems, comprising three dimensional porous reduced graphene oxide film electrodes. Prototype supercapacitors disclosed herein may exhibit improved performance compared to commercial supercapacitors. Additionally, the present disclosure provides a simple, yet versatile technique for the fabrication of supercapacitors through the direct preparation of three dimensional porous reduced graphene oxide films by filtration and freeze casting.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: September 14, 2021
    Assignee: The Regents of the University of California
    Inventors: Richard Barry Kaner, Yuanlong Shao
  • Patent number: 11120952
    Abstract: A process for producing a supercapacitor cell, comprising (a) Assembling a porous cell framework composed of a first conductive foam structure, a second conductive foam structure, and a porous separator, wherein the first and/or second conductive foam structure has a thickness no less than 200 ?m and at least 80% by volume of pores; (b) Preparing a first suspension of an anode active material dispersed in a liquid electrolyte and a second suspension of a cathode active material (e.g. graphene sheets) dispersed in a liquid electrolyte; and (c) Injecting the first suspension into pores of the first conductive foam structure to form an anode and injecting second suspension into pores of the second conductive foam structure to form a cathode, wherein the anode active material or the cathode active material constitutes an electrode active material loading >10 mg/cm2, preferably >15 mg/cm2, more preferably >20 mg/cm2.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: September 14, 2021
    Assignee: Nanotek Instruments Group, LLC
    Inventors: Aruna Zhamu, Bor Z. Jang
  • Patent number: 11107640
    Abstract: An energy storage device can include a cathode, an anode, and a separator between the cathode and the anode, and an electrolyte where the electrolyte includes one or more additives and/or solvent components selected from vinylene carbonate (VC), vinyl ethylene carbonate (VEC), dimethylacetamide (DMAc), hydro fluorinated ether branched cyclic carbonate, a hydro fluorinated ether ethylene carbonate (HFEEC), hydro fluorinated ether (HFE), and fluorinated ethylene carbonate (FEC). The electrolyte may include a carbonate based solvent and one or more solvent components and/or one or more of vinylene carbonate (VC), vinyl ethylene carbonate (VEC), dimethylacetamide (DMAc), hydro fluorinated ether branched cyclic carbonate, a hydro fluorinated ether ethylene carbonate (HFEEC), hydro fluorinated ether (HFE), and fluorinated ethylene carbonate (FEC).
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: August 31, 2021
    Assignee: Maxwell Technologies, Inc.
    Inventors: Santhanam Raman, Xiaomei Xi, Xiang-Rong Ye, Jian Hong
  • Patent number: 11087928
    Abstract: An electrolytic capacitor includes an anode body including a dielectric layer, a cathode body, and a conductive polymer layer and a liquid component that are disposed between the anode body and the cathode body. The cathode body includes a base material part having an outer surface that is roughened surface and has a pore opened at the outer surface, and an inorganic conductive layer covering at least a part of the outer surface. The base material part includes a first coating layer disposed along at least a part of inner wall of the pore. The first coating layer contains phosphorus.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: August 10, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshiaki Ishimaru, Kazunari Imamoto, Tatsuji Aoyama
  • Patent number: 11050080
    Abstract: An electrochemical cell includes an all-solid-state electrode body in which a positive electrode layer and a negative electrode layer are laminated together through a solid electrolyte and an exterior body having a cavity in which the electrode body is stored. The exterior body has a first case and a second case which sandwich the electrode body and a sealing member that defines the cavity together with the first case and the second case by joining the first case and the second. The thermal expansion coefficients of the electrode body, the first case, the second case, and the sealing member are all 10×10?6/° C. or lower.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: June 29, 2021
    Assignees: SEIKO INSTRUMENTS INC., OHARA INC.
    Inventors: Shunji Watanabe, Tsuneaki Tamachi, Kazuhito Ogasa, Ryohei Sato
  • Patent number: 11037736
    Abstract: The present invention provides a lithium ion capacitor (LIC) that achieves high specific capacity and high energy density. The lithium ion capacitor according to the present invention includes a cathode, an anode arranged apart from the cathode, and a Li-ion electrolyte with which a space between the cathode and the anode is filled. The cathode is made of a composite of graphene and carbon nanotubes, the anode is made of a Li-doped composite of graphene and carbon nanotubes, and the mass ratio of the anode to the cathode is larger than 0 and less than 1.0.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: June 15, 2021
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Jie Tang, Yige Sun, Luchang Qin
  • Patent number: 11015067
    Abstract: According to one of various aspects of the present invention, a slurry for a flexible electrode contains a component (a) dispersed in an aqueous emulsion. The emulsion includes one or more polymer components selected from the group consisting of acrylic polymers, urethane polymers, fluorine polymers, urea polymers, chloroprene polymers, and butadiene polymers. The emulsion has a pH of 6.5 to 8.0. In the slurry, the total of the polymer component(s) and the component (a) is 20 to 30% by mass. Of the total of the polymer component(s) and the component (a) in the slurry, the polymer component(s) is 60 to 85% by mass, and the component (a) is 15 to 40% by mass. Component (a) is carbon black having a DBP absorption amount under uncompressed conditions of 150 to 300 mL/100 g and a BET specific surface area of 35 to 140 m2/g.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: May 25, 2021
    Assignee: DENKA COMPANY LIMITED
    Inventors: Yoko Horikoshi, Tetsuya Ito
  • Patent number: 11017958
    Abstract: Disclosed are methods for fabricating supercapacitors (SCs) via vapor printing, specifically oxidative chemical vapor deposition (oCVD). Also disclosed are methods of using the supercapacitors, in particular for energy storage devices and photovoltaics.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: May 25, 2021
    Assignee: Massachusetts Institute of Technology
    Inventors: Andong Liu, Karen K. Gleason, Peter Kovacik
  • Patent number: 11007489
    Abstract: A carbonized PVDC copolymer useful for the separation of an olefin from its corresponding paraffin may be made by heating a polyvinylidene chloride copolymer film or hollow fiber having a thickness of 1 micrometer to 20 micrometers to a pretreatment temperature of 100° C. to 180° C. to form a pretreated polyvinylidene chloride copolymer film and then heating the pretreated polyvinylidene chloride copolymer film to a maximum pyrolysis temperature from 350° C. to 750° C. A process for separating an olefin from its corresponding paraffin in a gas mixture is comprised of flowing the gas mixture through the aforementioned carbonized polyvinylidene chloride (PVDC) copolymer to produce a permeate first stream having an increased concentration of the olefin and a second retentate stream having an increased concentration of its corresponding paraffin.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: May 18, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Junqiang Liu, Janet M. Goss, Edward M. Calverley, Douglas E. Beyer
  • Patent number: 10991476
    Abstract: A new solvent-based method is presented for making low-cost composite graphite electrodes containing a thermoplastic binder. The electrodes, termed thermoplastic electrodes (TPEs), are easy to fabricate and pattern, give excellent electrochemical performance, and have high conductivity (1500 S m?1). The thermoplastic binder enables the electrodes to be hot embossed, molded, templated, and/or cut with a CO2 laser into a variety of intricate patterns. These electrodes show a marked improvement in peak current, peak separation, and resistance to charge transfer over traditional carbon electrodes. The impact of electrode composition, surface treatment (sanding, polishing, plasma treatment), and graphite source were found to impact fabrication, patterning, conductivity, and electrochemical performance. Under optimized conditions, electrodes generated responses similar to more expensive and difficult to fabricate graphene and highly oriented pyrolytic graphite electrodes.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: April 27, 2021
    Assignee: Colorado State University Research Foundation
    Inventors: Charles S. Henry, Kevin Klunder
  • Patent number: 10987650
    Abstract: One aspect of the present invention relates to an adsorption filter containing an activated carbon and a fibrous binder. The adsorption filter has a density of 0.400 g/ml or more, and a pore volume at a pore diameter of 1 to 20 ?m is 0.60 ml/g or less as measured by mercury intrusion porosimetry.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: April 27, 2021
    Assignee: KURARAY CO., LTD.
    Inventors: Keita Takahashi, Takayuki Yoshikawa, Tetsuya Hanamoto, Hiroe Yoshinobu, Takayuki Yamada
  • Patent number: 10984963
    Abstract: The present invention relates to a carbonaceous material having a specific surface area of 1,800 m2/g to 3,000 m2/g according to a BET method, an R-value of 1.2 or more and a G-band half-value width of 70 cm?1 or more according to a Raman spectrum.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: April 20, 2021
    Assignee: KURARAYCO., LTD.
    Inventors: Shohei Kobayashi, Motomi Matsushima, Taketoshi Okuno, Hideharu Iwasaki
  • Patent number: 10968103
    Abstract: Copper-filled carbon nanotubes and methods of synthesizing the same are provided. Plasma-enhanced chemical vapor deposition can be used to synthesize vertically aligned carbon nanotubes filled with copper nanowires. The copper filling can occur concurrently with the carbon nanotube growth, and the carbon nanotubes can be completely filled by copper. The filling of Cu inside the CNTs can be controlled by tuning the synthesis temperature.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: April 6, 2021
    Assignee: The Florida International University Board of Trustees
    Inventors: Wenzhi Li, Arun Thapa
  • Patent number: 10959467
    Abstract: The present invention provides to a wearable smart device having electrical wiring comprising a stretchable conductive composition having excellent in durability such as repeated bending properties and repeated twisting properties, a material for realizing the wearable smart device, and a method for producing the wearable start device. An electrical wiring including a fine line having an electrical line interval of 1 mm or less, preferably the line width of less than 1 mm, is formed by printing a paste for forming a stretchable conductor containing metal-based conductive particles and a non-crosslinked elastomer, and further dried and cured at a low temperature condition of 120° C. for 30 minutes. As a result, the wearable smart device having electrical wiring constituted by fine lines without sagging of the edge is obtained.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: March 30, 2021
    Assignee: TOYOBO CO., LTD.
    Inventors: Yuko Nakao, Satoshi Imahashi, Michihiko Irie, Takashi Kondo, Maki Kinami
  • Patent number: 10957492
    Abstract: An electrolytic capacitor is disclosed. In an embodiment an electrolytic capacitor includes a housing having a base and an opening arranged opposite the base and a closure element being at least partly introduced into the opening, wherein the closure element is configured to close the housing, wherein the closure element includes a sealing element for electrically insulating a connection between closure element and housing, and wherein the closure element comprises at least one first contact element for electrically conductive connecting a second contact element.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: March 23, 2021
    Assignee: TDK ELECTRONICS AG
    Inventors: Norbert Will, Fabio Augusto Bueno de Camargo Mello, Igor Peretta, Emerson Almeida, Moisés Coster, Thales Machado
  • Patent number: 10957495
    Abstract: Provided is a supercapacitor comprising an anode, a cathode, an ion-permeable separator disposed between the anode and the cathode, and an electrolyte in ionic contact with the anode and the cathode, wherein at least one of the anode and the cathode contains multiple graphene sheets spaced by cellulosic nanofibers and has a specific surface area from 50 to 3,300 m2/g. Also provided is a process for producing an electrode for such a supercapacitor having a large electrode thickness, high active mass loading, high tap density, and exceptional energy density.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: March 23, 2021
    Assignee: Nanotek Instruments Group, LLC
    Inventors: Aruna Zhamu, Bor Z. Jang
  • Patent number: 10942099
    Abstract: A self-healing method for fractured single crystal SiC nanowires. A hair in a Chinese brush pen of yellow weasel's hair moves and transfers nanowires, which are placed on an in-situ TEM mechanical microtest apparatus. An in-situ nanomechanical tension test is realized. The nanowires are loaded. Displacement is 0-200 nm. Fracture strength of the single crystal nanowires is 12-15 GPa. After the nanowires are fractured, unloading causes slight contact between the fractured end surfaces, electron beam is shut off, and self-healing of the nanowires is conducted in a vacuum chamber. Partial recrystallization is found at a fracture after self-healing through in-situ TEM representation. A fracture strength test is conducted again after self-healing. A fractured position after healing is the same as the position before healing. The fracture strength of the single crystal nanowires after self-healing is 1-2.5 GPa. The recovery ratio of the fracture strength is 10-20%.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: March 9, 2021
    Assignee: Dalian University of Technology
    Inventors: Zhenyu Zhang, Junfeng Cui, Yuefeng Du, Dongming Guo
  • Patent number: 10944109
    Abstract: A Li/CFx primary battery having a lithium-based anode and a fluorinated carbon cathode. The fluorinated carbon cathode includes fluorinated carbon nanoparticles. The structure and size distribution of the carbon precursor carbon nanotubes are configured to provide improved battery performance. The fluorinated carbon nanoparticles can be formed by fluorinating carbon nanoparticles using a fluorine-based reactive gas at a temperature in the range from 300 to 600° C., and the fluorinated carbon nanoparticles can further be used to form the cathode of the primary battery. Producing the Li/CFx primary batter can also include heating the fluorinated carbon nanoparticles under an inert atmosphere before the fluorinated carbon nanoparticles are used to form the cathode of the primary battery.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: March 9, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Hanpu Liang, Nathan Lawrence, Timothy Jones, Steven Gahlings, Christine Jarvis, Wen Rong Li, Rogerio Tadeu Ramos, Vladimir Hernandez Solis
  • Patent number: 10943745
    Abstract: The electric storage device includes an electrode assembly having a positive electrode and a negative electrode, a case for housing the electrode assembly, a pressure relief valve, and positive and negative electrode conductive members that are electrically connected to the respective corresponding electrodes. The case has a wall in which the pressure relief valve is disposed. At least one of the positive and negative electrode conductive members includes an interposing portion located between the inner surface of the wall and an end face of the electrode assembly facing the inner surface, and a shielding portion located closer to the end face of the electrode assembly than the interposing portion. The shielding portion covers the pressure release valve from a side of the wall where the electrode assembly is located.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: March 9, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yusuke Yamashita, Takayuki Hirose, Shinji Suzuki, Yasuaki Takenaka, Masato Ogasawara, Atsushi Minagata, Hirokuni Akiyama, Motoaki Okuda
  • Patent number: 10938032
    Abstract: Provided herein are energy storage devices having an anode comprising a layered double hydroxide comprising divalent ions and trivalent ions both of which contribute to energy storage. In some embodiments, the specific combination of device chemistry, active materials, and electrolytes described herein form storage devices that operate at high voltage and exhibit the capacity of a battery and the power performance of supercapacitors in one device.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: March 2, 2021
    Assignee: The Regents of the University of California
    Inventors: Maher F. El-Kady, Haosen Wang, Richard B. Kaner
  • Patent number: 10930444
    Abstract: An electrochemical device includes an element body, an exterior sheet, a seal part, and a leading terminal. The element body includes a pair of inner electrodes laminated to sandwich a separator sheet. The exterior sheet covers the element body. The seal part seals a peripheral part of the exterior sheet for immersing the element body in an electrolyte. The leading terminal extends outward from the seal part of the exterior sheet. The exterior sheet includes a front sheet and a back sheet. The front sheet includes a front-side metal sheet. The back sheet includes a back-side metal sheet.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: February 23, 2021
    Assignee: TDK CORPORATION
    Inventors: Hiroaki Hasegawa, Hidetake Itoh, Yoshihiko Ohashi, Yuji Yoshino, Kazunori Yoshikawa
  • Patent number: 10920334
    Abstract: A method for the electrohydrodynamic deposition of carbonaceous materials utilizing an electrohydrodynamic cell comprising two electrodes comprised of a conductive material, by first combining a solid phase comprising a carbonaceous material and a suspension medium, placing the suspension between the electrodes, applying an electric field in a first direction, varying the intensity of the electric field sufficiently to drive lateral movement, increasing the electrical field to stop the lateral transport and fix the layers in place, then removing the applied field and removing the electrodes. Among the many different possibilities contemplated, the method may advantageously utilize: varying the spacing between the electrodes; removing the buildup from one or both electrodes; placing the electrodes into different suspensions; adjusting the concentration, pH, or temperature of the suspension(s); and varying the direction, intensity or duration of the electric fields.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: February 16, 2021
    Assignee: THE TRUSTEES OF PRINCETON UNIVERSITY
    Inventors: Ilhan A. Aksay, Valerie Alain-Rizzo, Michael Bozlar, David J. Bozym, Daniel M. Dabbs, Nicholas Szamreta, Cem B. Ustundag
  • Patent number: 10923729
    Abstract: A method of manufacturing a Lithium battery (100) with a current collector formed of pillars (11) on a substrate face (10), wherein the method comprises: forming elongate and aligned structures forming electrically conductive pillars (11) on the substrate face (10) with upstanding pillar walls extending from a pillar base to a pillar top; wherein the pillars are covered with a laminate comprising a first electrode (12), a solid state electrolyte layer (13); a second electrode layer (14), and a topstrate (20) forming an electrode part; and wherein at least one of the first electrode layer, second electrode layer and topstrate layer is non-conformally coated to prevent Lithium intercalation into the first or second electrode near the pillar base by limiting cracking at the pillar base when volume expansion/contraction of the electrode layers happens during the battery charge/discharge cycles.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: February 16, 2021
    Assignee: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
    Inventors: Sandeep Unnikrishnan, Lucas A. Haverkate
  • Patent number: 10923295
    Abstract: An energy storage device can include a cathode, an anode, and a separator between the cathode and the anode, where the anode and/or electrode includes an electrode film having a super-fibrillized binder material and carbon. The electrode film can have a reduced quantity of the binder material while maintaining desired mechanical and/or electrical properties. A process for fabricating the electrode film may include a fibrillization process using reduced speed and/or increased process pressure such that fibrillization of the binder material can be increased. The electrode film may include an electrical conductivity promoting additive to facilitate decreased equivalent series resistance performance. Increasing fibrillization of the binder material may facilitate formation of thinner electrode films, such as dry electrode films.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: February 16, 2021
    Assignee: Maxwell Technologies, Inc.
    Inventors: Santhanam Raman, James Borkenhagen, Xiaomei Xi, Xiang-Rong Ye
  • Patent number: 10910167
    Abstract: An electrochemical device, which can be thin enough to be built into a thin electronic device, and a method for manufacturing the same. The electrochemical device has: an element body on which a pair of internal electrodes are laminated so as to sandwich a separator sheet; an outer sheet covering the element body; sealing parts for sealing the peripheral edge of the outer sheet so that the element body is immersed in an electrolyte solution; and lead terminals electrically connected to either one of internal electrodes and leading out from the sealing parts of the outer sheet. At least a portion of a resin tape constituting the sealing parts, from which the lead terminals lead out, is thermally fused to an inside layer made from resin, which is present on the inner face of the outer sheet, in a position that does not overlap with the internal electrodes.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: February 2, 2021
    Assignee: TDK CORPORATION
    Inventors: Hiroaki Hasegawa, Hidetake Itoh, Yuji Yoshino, Kazunori Yoshikawa
  • Patent number: 10910165
    Abstract: A process for forming high surface area graphene structures includes: depositing at least one metal on a surface of silicon carbide; heating the at least one metal and the silicon carbide to cause at least one of the metals to react with a portion of the silicon carbide to form silicide regions extending into an unreacted portion of the silicon carbide and graphene disposed between the silicide regions and the unreacted portion of the silicon carbide; and removing the silicide regions to provide a silicon carbide structure having a highly irregular surface and a surface layer of graphene.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: February 2, 2021
    Assignee: UNIVERSITY OF TECHNOLOGY SYDNEY
    Inventors: Mohsin Ahmed, Francesca Iacopi
  • Patent number: 10892109
    Abstract: The present disclosure provides supercapacitors that may avoid the shortcomings of current energy storage technology. Provided herein are supercapacitor devices, and methods of fabrication thereof comprising the manufacture or synthesis of an active material on a current collector and/or the manufacture of supercapacitor electrodes to form planar and stacked arrays of supercapacitor electrodes and devices. Prototype supercapacitors disclosed herein may exhibit improved performance compared to commercial supercapacitors. Additionally, the present disclosure provides a simple, yet versatile technique for the fabrication of supercapacitors through masking and etching.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: January 12, 2021
    Assignee: The Regents of the University of California
    Inventors: Richard Barry Kaner, Maher F. El-Kady
  • Patent number: 10892112
    Abstract: A method of making an energy storage article having a metal nitride electrode is disclosed where metal nitride is made by nitriding particles of a metal or oxide of a metal selected from vanadium molybdenum, titanium, niobium, tungsten, or combinations including any of the foregoing by contacting the particles with a gas of nitrogen and hydrogen, or ammonia, in a fluidized bed reactor to form particles of metal nitride for the electrode.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: January 12, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Randolph Carlton McGee, Ying She, Zissis A. Dardas
  • Patent number: 10886075
    Abstract: The present invention relates to an electric double-layer capacitor and its manufacturing method. The ultracapacitor comprises a cylindrical housing having a bottom at one end and the housing is closed by an end cap integrated with first current terminal. From the bottom of the housing protrudes a terminal end of the second current terminal. Unlike to the previously known solutions the current terminals are arranged into the ultracapacitor, and spot welded to the electrode terminal to decrease internal resistance and to reach optimal packing density.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: January 5, 2021
    Assignee: OÜ Skeleton Technologies Group
    Inventors: Jaan Leis, Ann Laheäär, Priit Pihlakas, Mati Arulepp, Anti Perkson, Taavi Madiberk
  • Patent number: 10879014
    Abstract: A carbonaceous material for electric double-layer capacitors that is based on a plant-derived carbon precursor, in which carbonaceous material: a BET specific surface area is 1,900 to 2,500 m2/g; an average pore size is 2.2 to 2.6 nm as determined by a nitrogen adsorption method; a volume of micropores having a pore size of 2 nm or smaller is 0.84 to 1.30 cm3/g as determined by the MP method; a ratio of a volume of micropores having a pore size of 1 to 2 nm with respect to the volume of the micropores having a pore size of 2 nm or smaller is 25 to 50% as determined by the MP method; and a volume of mesopores having a pore size of 2 to 50 nm is 0.16 to 0.4 cm3/g as determined by the BJH method.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: December 29, 2020
    Assignee: KURARAY CO., LTD.
    Inventors: Yumika Nishita, Shushi Nishimura, Yoshifumi Egawa, Kiyoto Otsuka
  • Patent number: 10879552
    Abstract: A electrochemical storage device, referred to herein as a radical-ion battery, is described. The radical-ion battery includes an electrolyte, first free radicals, and second free radicals, wherein the first free radicals and the second free radicals are different chemical species. The radical-ion battery also includes a separator that allows select ions to pass therethrough, but separates the electrolyte from the second free radicals.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: December 29, 2020
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventor: Jeffrey P. Koplow
  • Patent number: 10872735
    Abstract: A high volumetric energy and power density supercapacitor is provided. This supercapacitor includes a coin cell, a spring lamination, a working electrode, a counter electrode, a separator, and an ionic liquid electrolyte. The working and counter electrodes are N—P doping porous graphene coated on Al substrate. The ionic liquid electrolyte is EMI-FSI. The method of producing N—P doping porous graphene includes following steps: S1: Graphite oxide is quickly transferred into the furnace, which had been held at 300° C. and the porous graphene can be produced. S2: The porous graphene and red phosphorus are put together in the evacuated tube furnace and heated to 700° C. for 1 hr. S3: Heated to 800° C. for 30 min in a mixed argon and ammoniac atmosphere and then the N—P doping porous graphene can be made. The capacitance of the supercapacitor is 105 F/g and the volumetric power density is 1.19 kW/L.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: December 22, 2020
    Assignee: National Chung-Shan Institute of Science and Technology
    Inventors: Chien-Liang Chang, Wu-Ching Hung, Jeng-Kuei Chang, Bo-Rui Pan
  • Patent number: 10872737
    Abstract: An ultracapacitor that includes an energy storage cell immersed in an electrolyte and disposed within an hermetically sealed housing, the cell electrically coupled to a positive contact and a negative contact, wherein the ultracapacitor has a gel or polymer based electrolyte and is configured to output electrical energy at temperatures between about ?40° C. and about 250° C. Methods of fabrication and use are provided.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: December 22, 2020
    Assignee: FASTCAP SYSTEMS CORPORATION
    Inventor: Nicolò Michele Brambilla
  • Patent number: 10865474
    Abstract: Embodiments of the present technology include graphene-metal composites. An example graphene-metal composite includes a porous metal foam substrate, a graphene layer deposited to the porous metal foam substrate, a metal layer applied to the graphene layer, and another graphene layer deposited to the metal layer; the multilayered porous metal foam substrate being compressed to form a graphene-metal composite, and depositing a thin metal coating on an outer surface of the porous metal foam substrate or an outer surface of the graphene using any of physical vapor deposition and chemical vapor deposition.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: December 15, 2020
    Assignee: Fourté International, SDN. BHD
    Inventors: James J. Farquhar, Choon Ming Seah
  • Patent number: 10855179
    Abstract: A power converter may be adapted to provide an output voltage from one of two input voltages. The power converter may include two or more buck converters that share a plurality of power converter components and each converts an individual input voltage to the output voltage. The power converter may include any of a variety of charge equalizing components that may be coupled between input terminals and optional input capacitors, which are coupled between the input terminals and ground. The charge equalizing component(s) provide(s) a fast conduction path for the equalization of input voltages and charge/voltage of the optional input capacitors. The charge equalizing component(s) can mitigate large currents created by differential voltages between the input terminals, which currents would otherwise flow through and potentially damage or destroy the power converter's switching devices.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: December 1, 2020
    Assignee: Apple Inc.
    Inventors: Khaleel Shaik, Di Zhao, Sivasankari Krishnanji
  • Patent number: 10840029
    Abstract: The invention relates to a capacitor with a layered construction on a base element having open pores with inner pore surfaces. The base element is electrically conductive at least in a part of the inner pore surfaces and therefore forms a continuous electrode. The electrically conductive part of the inner pore surfaces is nanostructured. In the capacitor a layer of a solid body electrolyte is directly arranged on the electrode and an electrically conductive counter-electrode layer forming a counter electrode is directly arranged on the solid body electrolyte. The counter electrode is applied as a thin layer so that within the open pores a continuous free space remains. The invention also relates to a construction element comprising a foam structure which is part of such a capacitor. The invention also relates to a method of manufacturing such a construction element.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: November 17, 2020
    Assignee: DEUTSCHES ZENTRUM FÜR LUFT- UND RAUMFAHRT E.V.
    Inventors: Sebastian Geier, Thorsten Mahrholz
  • Patent number: 10825616
    Abstract: Method of preparing a nonaqueous lithium power storage element, by providing a nonaqueous lithium power storage element comprising a positive electrode precursor containing a lithium compound other than an active material, a negative electrode, a separator, a nonaqueous electrolytic solution containing lithium ions, and a casing; and applying a voltage of 4.2V or more to the nonaqueous lithium power storage element to decompose the lithium compound in the positive electrode precursor and pre-dope the negative electrode with the lithium ions, while releasing a gas generated from decomposition of the lithium compound either out of an opening of the casing or through a degassing valve or gas permeable film.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: November 3, 2020
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Kazuteru Umetsu, Nobuhiro Okada, Takeshi Kamijo
  • Patent number: 10826054
    Abstract: An object of the present invention is to improve the electron conductivity and ion conductivity of the surface of a positive electrode active material to provide a lithium ion battery having high capacity and high output. The present invention relates to a positive electrode for a lithium ion secondary battery, including a mixture layer containing a positive electrode active material for a lithium ion secondary battery and graphene, wherein the mixture layer has a percentage of abundance of silicon composing a siloxane bond in total elements of 0.4 atomic % or more as measured by X-ray photoelectron spectroscopy.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: November 3, 2020
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Takashi Konishi, Eiichiro Tamaki, Manabu Kawasaki, Koki Miyazono
  • Patent number: 10818441
    Abstract: An energy storage device can have a first graphite film, a second graphite film and an electrode divider ring between the first graphite film and the second graphite film, forming a sealed enclosure. The energy storage device may be compatible with an aqueous electrolyte or a non-aqueous electrolyte. A method of forming an energy storage device can include providing an electrode divider ring, a first graphite film and a second graphite film. The method can include pressing a first edge of the electrode divider ring into a surface of the first graphite film, and pressing a second opposing edge of the electrode divider ring into a surface of the second graphite film to form a sealed enclosure. The sealed enclosure may have as opposing surfaces the surface of the first graphite film and the surface of the second graphite film.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: October 27, 2020
    Assignee: Maxwell Technologies, Inc.
    Inventors: Porter Mitchell, Thomas J. Dougherty
  • Patent number: 10804042
    Abstract: Provided is a supercapacitor electrode, comprising: (a) preparing a deformable mass of multiple flakes of exfoliated graphite worms or expanded graphite dispersed in or impregnated by a liquid or gel electrolyte; and (b) subjecting the deformable mass to a forced assembling and orientating procedure, forcing the deformable mass to form the electrode, wherein these fakes are spaced by thin electrolyte layers, having an electrolyte layer thickness from 0.4 nm to 10 nm, and the flakes are substantially aligned along a desired direction, and wherein the electrode has a physical density from 0.5 to 1.7 g/cm3 and a specific surface area from 50 to 3,300 m2/g, when measured in a dried state of the flakes without the electrolyte. This supercapacitor has a large electrode thickness, high active mass loading, high tap density, and exceptional energy density.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: October 13, 2020
    Assignee: Nanotek Instruments Group, LLC
    Inventors: Aruna Zhamu, Bor Z. Jang
  • Patent number: 10797319
    Abstract: An object of the present invention is to provide a non-aqueous electrolyte secondary battery that has a large charge/discharge capacity, has a small irreversible capacity, which is the difference between the doping capacity and the de-doping capacity, and is capable of effectively using an active material. The problem described above can be solved by a method for producing a carbonaceous material for a non-aqueous electrolyte secondary battery anode, the method including: (1) an alkali metal compound impregnating step of adding an elemental alkali metal or a compound containing an elemental alkali metal to a carbonaceous precursor to obtain an alkali-impregnated carbonaceous precursor; (2) a heat treatment step of: (a) obtaining a heat-treated product by performing main heat treatment on the alkali-impregnated carbonaceous precursor at 800° C. to 1500° C.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: October 6, 2020
    Assignee: KUREHA CORPORATION
    Inventors: Naohiro Sonobe, Kazuhiko Shimizu
  • Patent number: 10770731
    Abstract: The present invention provides a positive electrode current collector, and a preparation method and use thereof. The positive electrode current collector is of a multilayered structure and comprises a plastic thin film, wherein the upper and lower surfaces of the plastic thin film are coated with a bonding force enhancement layer, an aluminum metal coating layer and an anti-oxidization layer in sequence. The preparation method comprises the steps of coating the bonding force enhancement layer, the aluminum metal coating layer and the anti-oxidization layer in sequence through an evaporation film-coating process. Use of the positive electrode current collector in a lithium ion battery is further provided. By virtue of the positive electrode current collector according to the present invention, light weight and improved energy density of the battery is realized, and the aluminum coating layer is not easily peeled off, and insusceptible to oxidization.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: September 8, 2020
    Inventors: Zuoyi Yan, Wenqing Liu
  • Patent number: 10756346
    Abstract: A porous carbon material is provided. The porous carbon material having a value of specific surface area of at least 10 m2/g as measured by a nitrogen BET method, a pore volume of at least 0.1 cm3/g as measured by a BJH method and a MP method, and a R value of 1.5 or greater, wherein the R value is expressed as R=B/A, wherein A is an intensity at an intersection between a baseline of a diffraction peak of a (002) plane as obtained based on powdery X-ray diffractometry of the porous carbon material and a perpendicular line downwardly drawn from the diffraction peak of the (002) plane, and wherein B is an intensity of the diffraction peak of the (002) plane.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: August 25, 2020
    Assignee: Sony Corporation
    Inventors: Seiichiro Tabata, Shinichiro Yamada, Masayoshi Kanno, Tsutomu Noguchi, Takeshi Horie
  • Patent number: 10741337
    Abstract: A mesoporous, nanocrystalline, metal oxide construct particularly suited for capacitive energy storage that has an architecture with short diffusion path lengths and large surface areas and a method for production are provided. Energy density is substantially increased without compromising the capacitive charge storage kinetics and electrode demonstrates long term cycling stability. Charge storage devices with electrodes using the construct can use three different charge storage mechanisms immersed in an electrolyte: (1) cations can be stored in a thin double layer at the electrode/electrolyte interface (non-faradaic mechanism); (2) cations can interact with the bulk of an electroactive material which then undergoes a redox reaction or phase change, as in conventional batteries (faradaic mechanism); or (3) cations can electrochemically adsorb onto the surface of a material through charge transfer processes (faradaic mechanism).
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: August 11, 2020
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Bruce S. Dunn, Sarah H. Tolbert, John Wang, Torsten Brezesinski, George Gruner
  • Patent number: 10727003
    Abstract: Cord-yarn supercapacitors are disclosed herein. The cord-yarn supercapacitor can include two or more ply yarns twisted together and an electrolyte. The ply yarns can comprise an activated carbon fiber yarn and a non-activated carbon fiber yarn. The activated carbon fiber yarn can be derived from a staple yarn which has been carbonized and activated. The non-activated carbon fiber yarn can be derived from a multi filament yarn. The electrolyte can include a polymer gel. The cord-yarn supercapacitors disclosed herein provide a rope-format linear structure with great flexibility. This unique linear structure allows the supercapacitor to find use in applications such as apparel products, outdoor activity products, sports wears, and other industrial end uses. Methods of making cord-yarn supercapacitors are also disclosed.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: July 28, 2020
    Assignee: Board of Regents, The University of Texas System
    Inventors: Jonathan Y. Chen, Yuxiang Huang, Yue Liu
  • Patent number: 10720647
    Abstract: A binder composition for a non-aqueous secondary battery electrode contains a water-soluble polymer including a (meth)acrylamide monomer unit and an amine compound. Percentage content M0 of the (meth)acrylamide monomer unit is at least 40 mass % and not more than 100 mass % relative to 100 mass % of all monomer units of the water-soluble polymer. Content M1 of the amine compound is at least 0.01 parts by mass and not more than 0.5 parts by mass per 100 parts by mass of solid content of the water-soluble polymer.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: July 21, 2020
    Assignee: ZEON CORPORATION
    Inventor: Masanori Shibuya
  • Patent number: 10714271
    Abstract: An ultracapacitor that includes an energy storage cell immersed in an electrolyte and disposed within an hermetically sealed housing, the cell electrically coupled to a positive contact and a negative contact, wherein the ultracapacitor is configured to output electrical energy within a temperature range between about 80 degrees Celsius to about 210 degrees Celsius. Methods of fabrication and use are provided.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: July 14, 2020
    Assignee: FASTCAP SYSTEMS CORPORATION
    Inventors: Riccardo Signorelli, John J. Cooley, Christopher John Sibbald Deane, James Epstein, Padmanaban Sasthan Kuttipillai, Fabrizio Martini, Lindsay A. Wilhelmus
  • Patent number: 10692661
    Abstract: The present invention relates to Composite comprising CNT fibres and an ionic conducting compound forming a homogeneous continuous phase or a two-phase bicontinuous structure and its process of obtainment by impregnation methods. Furthermore the invention relates to its use as part of an energy storage device such as an structural flexible electrochemical capacitor.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: June 23, 2020
    Assignee: B/E Aerospace Systems GmbH
    Inventors: Juan José Vilatela, Rebecca Marcilla, Jesús Palma, Evgeny Senokos, Detlev Degenhardt, Sherif Ashraf
  • Patent number: 10692662
    Abstract: An electric double layer device is configured such that a lower terminal is directly withdrawn from a lower collecting plate in the same manner as the manner in which an upper terminal is directly withdrawn from an upper collecting plate, thereby improving productivity and ease of assembly, and in addition increasing connection force.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: June 23, 2020
    Assignee: Nesscap Co., Ltd.
    Inventors: Young Jin Kim, Gwan Goo Jung
  • Patent number: 10682595
    Abstract: Filter media, including those suitable for hydraulic applications, and related components, systems, and methods associated therewith are provided. The filter media described herein may include two or more layers, at least one of the layers having a relatively high percentage of microglass fibers. Additionally, the filter media may be designed such that the ratio of average fiber diameters between two layers is relatively small, which can lead to a relatively low resistance ratio between the layers. In some embodiments, at least one layer of the filter media comprises synthetic polymer fibers. Certain filter media described herein may have desirable properties including high dirt holding capacity and a low resistance to fluid flow. The media may be incorporated into a variety of filter element products including hydraulic filters.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: June 16, 2020
    Assignee: Hollingsworth & Vose Company
    Inventors: Cameron Thomson, Milind Godsay, Randall B. Keisler