Patents Assigned to DE NORA PERMELEC LTD.
  • Publication number: 20190352786
    Abstract: An organic hydride production apparatus includes: an electrolyte membrane having proton conductivity; a cathode that includes a cathode catalyst layer used to hydrogenate a hydrogenation target substance using protons to produce an organic hydride and also includes a cathode chamber; an anode that includes an anode catalyst layer used to oxidize water to produce protons and also includes an anode chamber; and a gas introduction unit that introduces, into the anolyte at a certain position, a certain gas used to remove at least one of the hydrogenation target substance and the organic hydride that have passed through the electrolyte membrane and been mixed into the anolyte.
    Type: Application
    Filed: October 18, 2017
    Publication date: November 21, 2019
    Applicants: National University Corporation YOKOHAMA National University, DE NORA PERMELEC LTD
    Inventors: Shigenori MITSUSHIMA, Kensaku NAGASAWA, Yoshinori NISHIKI, Akihiro KATO, Setsuro OGATA, Awaludin ZAENAL, Akiyoshi MANABE, Koji MATSUOKA, Yasushi SATO
  • Patent number: 10407781
    Abstract: To provide an electrolytic apparatus and an electrolytic method which can remove a risk of reaching an explosion limit of hydrogen by gradual accumulation of a very small amount of gas in a circulation line of an electrolytic solution in an electrolytic process generating hydrogen. The electrolytic apparatus 1 is characterized by including an anode gas feeding line 20 connecting a gas phase region 21 to an anode side gas-liquid separation means in order to dilute the concentration of the hydrogen gas by feeding anode gas into the gas phase region 21 in which hydrogen gas can exist as a gas phase. By feeding at least a part of the anode gas to the gas phase region 21 with the anode gas feeding line 20, the hydrogen gas in the gas phase region 21 is diluted with the anode gas so that the concentration of the hydrogen gas is surely less than a lower limit value of explosion limit.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: September 10, 2019
    Assignee: DE NORA PERMELEC LTD
    Inventors: Hiroki Domon, Akiyoshi Manabe, Masahiro Ohara
  • Publication number: 20190264340
    Abstract: An organic hydride production apparatus includes: an electrolyte membrane having proton conductivity; a cathode that includes a cathode catalyst layer used to hydrogenate a hydrogenation target substance using protons to produce an organic hydride and also includes a cathode chamber; an anode that includes an anode catalyst layer used to oxidize water to produce protons and also includes an anode chamber; and a gas introduction unit that introduces, into the anolyte at a certain position, a certain gas used to remove at least one of the hydrogenation target substance and the organic hydride that have passed through the electrolyte membrane and been mixed into the anolyte.
    Type: Application
    Filed: May 15, 2019
    Publication date: August 29, 2019
    Applicants: National University Corporation YOKOHAMA National University, DE NORA PERMELEC LTD
    Inventors: Shigenori MITSUSHIMA, Kensaku NAGASAWA, Yoshinori NISHIKI, Akihiro KATO, Setsuro OGATA, Awaludin ZAENAL, Akiyoshi MANABE, Koji MATSUOKA, Yasushi SATO
  • Patent number: 10381172
    Abstract: A method for manufacturing an electrode, which can suppress waste of electrode substrate, prevent impairment of operability, improve flatness and the like, and reliably prevent falling off thereof, and simultaneously can prevent wrinkles and bulges of the electrode caused by the heat treatment and the like, thereby manufacturing a higher-quality electrode. The method includes: preparing a rectangular plate-like electrode substrate having attachment portions at two ends including opposing sides by linearly bending two parts so that each part has an overall even side; holding the attachment portions by the suspension jig and a lower jig each being provided with a movement restriction portion with which a leading end of each attachment portion comes into contact, thereby maintaining the electrode substrate in a suspended state; and performing at least heat treatment on the suspended electrode substrate so as to manufacture a portion for an electrode.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: August 13, 2019
    Assignee: DE NORA PERMELEC LTD
    Inventors: Atsumi Takeuchi, Tadanori Kishi
  • Patent number: 10202698
    Abstract: A device for producing an organic hydride 10 of an aspect of the present invention has an electrochemical cell provided with an anode 12 on a surface of an electrolyte membrane 11 and a cathode including a cathode catalyst layer 13 and a cathode diffusion layer 14 on another surface of the electrolyte membrane 11. A gap is provided between the anode 12 and the electrolyte membrane 11. The anode 12 has a network structure with an aperture ratio of 30 to 70%, and has an electrical supply supporting material formed of an electronic conductor and the electrode catalyst held by the electrical supply supporting material.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: February 12, 2019
    Assignees: Yokohama National University, DE NORA PERMELEC LTD
    Inventors: Shigenori Mitsushima, Yasutomo Takakuwa, Yoshinori Nishiki, Akihiro Kato, Akiyoshi Manabe, Yasushi Sato, Kota Miyoshi, Kojiro Nakagawa, Shinji Oshima
  • Publication number: 20180282884
    Abstract: Provided are an electrode for electrolysis having excellent durability against reverse current, and a method that enables production of the electrode for electrolysis at low cost. The electrode for electrolysis 130 includes a conductive substrate 132 on which a catalyst layer is formed, and a reverse current absorption body 134 that is coupled to the conductive substrate 132 in a detachable manner, wherein the reverse current absorption body 134 is formed from a sintered compact containing nickel. The method for producing the electrode for electrolysis 130 includes a sintered compact formation step of obtaining the sintered compact by sintering a raw material powder composed of any one of Raney nickel alloy particles containing nickel and an alkali-soluble metal element, metallic nickel particles, and a mixture of Raney nickel alloy particles and metallic nickel particles, and a coupling step of coupling the sintered compact to the conductive substrate 132.
    Type: Application
    Filed: April 27, 2017
    Publication date: October 4, 2018
    Applicant: DE NORA PERMELEC LTD
    Inventors: Suguru TAKAHASHI, Akihiro MADONO, Takamichi KISHI, Osamu ARIMOTO
  • Publication number: 20180245224
    Abstract: Provided are an electrolyzer having excellent durability against reverse current. The electrolyzer 300 includes an anode 314, an anode chamber 310 housing the anode 314, a cathode 330, a cathode chamber 320 housing the cathode 330, and a diaphragm that separates the anode chamber 310 and the cathode chamber 320, wherein a reverse current absorption body 334 formed of a sintered compact containing nickel is disposed in at least one of an inside of the cathode chamber 320 and an inside of the anode chamber 310, and the reverse current absorption body 334 is not directly coupled to the cathode 330 and the anode 314 but is electrically connected to at least one of the cathode 330 and the anode 314.
    Type: Application
    Filed: April 27, 2017
    Publication date: August 30, 2018
    Applicant: DE NORA PERMELEC LTD
    Inventors: Suguru TAKAHASHI, Akihiro MADONO, Takamichi KISHI, Osamu ARIMOTO
  • Patent number: 10053380
    Abstract: There is provided an electrolysis device configured to use unpurified water containing a small amount of ions of alkaline earth metal such as Ca and Mg as raw water, and to have a structure of supplying the raw water to a cathode chamber in which deposition of scale of the alkaline earth metal on the surface of a cathode provided in the cathode chamber can be prevented. The electrolysis device and the apparatus for producing electrolyzed ozone water are configured by an electrolysis cell formed in a manner that a membrane-electrode assembly is configured by a solid polymer electrolyte separation membrane formed by a cation exchange membrane, and an anode and a cathode which are respectively adhered to both surfaces of the solid polymer electrolyte separation membrane, and the membrane-electrode assembly is compressed from both surfaces thereof, and thus the solid polymer electrolyte separation membrane, the anode, and the cathode are adhered to each other.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: August 21, 2018
    Assignees: AQUAECOS LTD., DE NORA PERMELEC LTD
    Inventors: Hideo Nitta, Masashi Hosonuma
  • Patent number: 10053787
    Abstract: Provided are an electrolytic cathode structure that can suppress the degradation of an activated cathode even if a reverse current flows upon the stoppage of operation of an electrolyzer in an electrode structure allowing the distance between the electrode and an electrode current collector to be maintained at an approximately constant value, and an electrolyzer using the same. The electrolytic cathode structure includes a metal elastic cushion member 1 compressed and accommodated between an activated cathode 2 and a cathode current collector 3. At least a surface layer of the cathode current collector 3 consumes a larger oxidation current per unit area than the activated cathode. The electrolyzer is partitioned by an ion exchange membrane into an anode chamber for accommodating an anode and a cathode chamber for accommodating a cathode. The electrolytic cathode structure is used for the cathode.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: August 21, 2018
    Assignee: DE NORA PERMELEC LTD
    Inventors: Akihiro Madono, Mitsumasa Okamoto
  • Publication number: 20180171494
    Abstract: A diaphragm includes a porous supporting body and a polymer porous membrane. When one of surfaces of the porous membrane is defined as a surface A, the other surface opposite to the surface A is defined as a surface B, a section of the porous membrane parallel to the surfaces A and B is defined as a section C, an average pore diameter on the surface A is defined as an average pore diameter DA, an average pore diameter on the surface B is defined as an average pore diameter DB, and an average pore diameter on the section C is defined as an average pore diameter DC, the average pore diameters DA and DB are substantially equal to each other, and the average pore diameter DC is larger than each of the average pore diameters DA and DB.
    Type: Application
    Filed: May 16, 2016
    Publication date: June 21, 2018
    Applicants: KAWASAKI JUKOGYO KABUSHIKI KAISHA, DE NORA PERMELEC LTD, THYSSENKRUPP UHDE CHLORINE ENGINEERS (JAPAN) LTD.
    Inventors: Takafumi ITO, Ikuo SHIMOMURA, Yuji KAMEI, Akiyoshi MANABE, Akihiro KATO, Terumi HASHIMOTO
  • Publication number: 20180175425
    Abstract: Electric power energy required in an alkaline water electrolytic device and an alkaline fuel cell for continuing an electrolytic treatment, a hydrogen gas and an oxygen gas serving as raw materials for the electric power energy, an amount of water corresponding to raw water lost through the electrolytic treatment, and an electrolytic solution are efficiently circulated and used in a water treatment system to considerably reduce electric power consumption.
    Type: Application
    Filed: June 16, 2016
    Publication date: June 21, 2018
    Applicant: DE NORA PERMELEC LTD
    Inventors: Akiyoshi MANABE, Fumiya TSUJII, Akihiro KATO
  • Patent number: 9903031
    Abstract: The present invention provides a method for manufacturing an electrolytic electrode, the method capable of appropriately controlling the amount of an electrode catalyst component as desired and also capable of manufacturing a high-performance electrolytic electrode in a cost-effective and efficient way without affecting the electrode performance.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: February 27, 2018
    Assignee: DE NORA PERMELEC LTD
    Inventor: Atsumi Takeuchi
  • Patent number: 9818496
    Abstract: The present invention relates to a method for treating tritium water-containing raw water, the method including supplying a part of raw water containing tritium water and alkali water to a circulation tank, mixing the raw water with alkali water in the circulation tank to obtain an electrolyte adjusted so as to have a desired alkali concentration, and continuously electrolyzing the electrolyte while circulating the electrolyte, thereby subjecting the raw water stored in the storage tank to alkali water electrolysis and thus gasifying the raw water. According to the invention, by gasifying tritium water-containing raw water by alkali water electrolysis, the tritium concentration in a tritium-containing hydrogen gas is diluted to 1/1,244 and the tritium water-containing raw water can be reduced in volume.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: November 14, 2017
    Assignee: DE NORA PERMELEC LTD
    Inventors: Akiyoshi Manabe, Masahiro Ohara, Yoshinori Nishiki, Akira Kunimatsu
  • Publication number: 20170321331
    Abstract: An anode for oxygen evolution that operates at a small overpotential and in a stable manner, and can be used favorably in an organic chemical hydride electrolytic synthesis apparatus. An anode 10 for oxygen evolution that evolves oxygen in a sulfuric acid aqueous solution containing a substance to be hydrogenated dissolved at a concentration higher than 1 mg/L, wherein an anode substrate 10a is composed of a valve metal, and an anode catalyst layer 10b containing at least one oxide, nitride or carbide of iridium, and at least one oxide, nitride or carbide of at least one metal selected from the group consisting of elements belonging to groups 4, 5 and 13 of the periodic table is formed on the surface of the anode substrate 10a.
    Type: Application
    Filed: November 19, 2015
    Publication date: November 9, 2017
    Applicants: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, DE NORA PERMELEC LTD.
    Inventors: Shigenori MITSUSHIMA, Yasutomo TAKAKUWA, Awaludin ZAENAL, Akihiro KATO
  • Publication number: 20170314145
    Abstract: An organic hydride production apparatus that enables the reduction reaction at the cathode of an organic compound having an unsaturated bond to proceed at high current efficiency and at a low electric power consumption rate, and a method for producing an organic hydride that uses this production apparatus.
    Type: Application
    Filed: November 19, 2015
    Publication date: November 2, 2017
    Applicants: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, DE NORA PERMELEC LTD.
    Inventors: Shigenori MITSUSHIMA, Yasutomo TAKAKUWA, Yoshinori NISHIKI, Akihiro KATO, Akiyoshi MANABE
  • Publication number: 20170292198
    Abstract: To provide an electrolysis cell for producing an organic chemical hydride capable of advancing a reduction reaction in a cathode of an organic compound having an unsaturated bond with high current efficiency and a small electric power consumption unit.
    Type: Application
    Filed: September 18, 2015
    Publication date: October 12, 2017
    Applicants: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, De Nora Permelec Ltd.
    Inventors: Shigenori MITSUSHIMA, Yasutomo TAKAKUWA, Yoshinori NISHIKI, Akihiro KATO, Akiyoshi MANABE
  • Publication number: 20170206991
    Abstract: The present invention relates to a method for treating tritium water-containing raw water, the method including supplying a part of raw water containing tritium water and alkali water to a circulation tank, mixing the raw water with alkali water in the circulation tank to obtain an electrolyte adjusted so as to have a desired alkali concentration, and continuously electrolyzing the electrolyte while circulating the electrolyte, thereby subjecting the raw water stored in the storage tank to alkali water electrolysis and thus gasifying the raw water. According to the invention, by gasifying tritium water-containing raw water by alkali water electrolysis, the tritium concentration in a tritium-containing hydrogen gas is diluted to 1/1,244 and the tritium water-containing raw water can be reduced in volume.
    Type: Application
    Filed: January 28, 2015
    Publication date: July 20, 2017
    Applicant: De Nora Permelec Ltd.
    Inventors: Akiyoshi MANABE, Masahiro OHARA, Yoshinori NISHIKI, Akira KUNIMATSU
  • Publication number: 20160312371
    Abstract: An alkaline water electrolysis diaphragm includes: a polymer porous layer containing at least one polymer compound selected from polyether sulfone having a contact angle of 20 to 90° and polysulfone having the contact angle of 20 to 90°; and an organic fiber fabric layer coupled to the polymer porous layer. The polyether sulfone having the contact angle of 20 to 90° is at least one polymer compound selected from the group made of polyether sulfone, hydrophilic polyether sulfone, cationic polyether sulfone, and cationic hydrophilic polyether sulfone. The polysulfone having the contact angle of 20 to 90° is at least one polymer compound selected from the group made of polysulfone, hydrophilic polysulfone, cationic polysulfone, and cationic hydrophilic polysulfone.
    Type: Application
    Filed: December 16, 2014
    Publication date: October 27, 2016
    Applicants: KAWASAKI JUKOGYO KABUSHIKI KAISHA, DE NORA PERMELEC LTD, thyssenkrupp UHDE CHLORINE ENGINEERS (JAPAN) LTD.
    Inventors: Yuji KAMEI, Koki TAGUCHI, Ikuo SHIMOMURA, Takafumi ITO, Jun KAWAGUCHI, Tomonori TAKASE, Akihiro KATO, Akiyoshi MANABE, Terumi HASHIMOTO
  • Patent number: 9297085
    Abstract: The present invention provides a membrane-electrode assembly which includes: at least one rod-form or tubular electrode; a tubular diaphragm disposed around the periphery of the electrode; and a wire-form counter electrode disposed around the periphery of the diaphragm, the diaphragm being fixed to the rod-form or tubular electrode with the wire-form counter electrode to thereby form an electrode chamber having a gas/liquid passage between the diaphragm and the rod-form or tubular electrode.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: March 29, 2016
    Assignees: DE NORA PERMELEC LTD., Institute of National Colleges of Technology, Japan
    Inventors: Noriyuki Kitaori, Kota Sekido, Tomoyasu Shibata, Tomohisa Suzuki, Masashi Tanaka, Tsuneto Furuta, Yoshinori Nishiki