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公开(公告)号：US10407781B2
公开(公告)日：2019-09-10
申请号：US15743887
申请日：2016-08-17
Applicant: DE NORA PERMELEC LTD
Inventor： Hiroki Domon , Akiyoshi Manabe , Masahiro Ohara
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.
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公开(公告)号：US12227860B2
公开(公告)日：2025-02-18
申请号：US17439290
申请日：2020-03-27
Applicant: DE NORA PERMELEC LTD
Inventor： Akiyoshi Manabe
Abstract: Disclosed is a purification method of electrolytic gas generated from an electrolysis cell having a cathode and an anode. In a step of performing electrolysis of an electrolyte solution supplied into the electrolysis cell and repeating the electrolysis while circulating the electrolyzed electrolyte solution via an circulation tank disposed outside the electrolysis cell, a bag-shaped membrane pack, which is made from a specific porous membrane material, is of a shape having an opening at a top end thereof and closed at an entire side wall and entire bottom wall thereof and has a large permeation area at the entire side wall and entire bottom wall, is disposed in an interior of the circulation tank, thereby enabling to perform the electrolysis while purifying the electrolyte solution in which a portion of the electrolytic gas generated by the electrolysis is dissolved and bubbles of another portion of the electrolytic gas coexist.
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公开(公告)号：US11982007B2
公开(公告)日：2024-05-14
申请号：US17597107
申请日：2020-07-17
Applicant: DE NORA PERMELEC LTD
Inventor： Akiyoshi Manabe
IPC: C25B9/60 , C25B1/46 , C25B9/05 , C25B9/19 , C25B9/23 , C25B9/63 , C25B11/03 , C25B11/052 , C25B13/02
CPC classification number: C25B9/60 , C25B1/46 , C25B9/05 , C25B9/19 , C25B9/23 , C25B9/63 , C25B11/03 , C25B11/052 , C25B13/02
Abstract: There are provided an electrolyzer gasket, which can accommodate and hold a separator inside an electrolyzer by a simple handling, can more surely prevent leakage of an electrolyte and an electrolytically generated gas from the inside of the electrolyzer, can keep the separator in such a state that the separator is held at a position that is in contact with one of electrodes and is located along the electrode and therefore can suppress damage of the separator and makes it possible to use the separator stably for a long period of time, and an electrolyzer. An electrolyzer gasket including a picture-frame-shaped thin-plate-like frame having a first surface being in contact with an anode metal frame and a second surface being in contact with a cathode metal frame, wherein the gasket has a structure in which a notch having a difference in level of approximately the same thickness as the thickness of the separator, the notch obtained by thinly scraping off, in a uniform thickness, a region including the edge on the anode chamber side or the cathode chamber side, is formed on any one of the first surface and the second surface, and the edge part of the separator is accommodated and held in the notch, and an electrolyzer using the electrolyzer gasket.
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公开(公告)号：US11236428B2
公开(公告)日：2022-02-01
申请号：US15514403
申请日：2015-09-18
Inventor： Shigenori Mitsushima , Yasutomo Takakuwa , Yoshinori Nishiki , Akihiro Kato , Akiyoshi Manabe
IPC: C25B9/23 , C25B11/02 , C25B3/25 , C25B11/043 , C25B11/051 , C25B11/073 , C25B11/077
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.
An electrolysis cell 10 for producing an organic chemical hydride includes a solid polymer electrolyte film 11 which has proton conductivity; a cathode 12 which is provided on one surface of the solid polymer electrolyte film 11 and generates a hydride by reducing a substance to be hydrogenated; a cathode chamber 13 which accommodates the cathode 12 and to which the substance to be hydrogenated is supplied; an electrode catalyst-containing anode 14 which is provided on another surface of the solid polymer electrolyte film 11 and generates a proton by oxidizing water; and an anode chamber 15 which accommodates the anode 14 and to which an electrolytic solution is supplied, in which at least one of a surface of the cathode 12 side and a surface of the anode 14 side of the solid polymer electrolyte film 11 is hydrophilized.-
公开(公告)号：US11479868B2
公开(公告)日：2022-10-25
申请号：US16632943
申请日：2017-09-07
Applicant: DE NORA PERMELEC LTD
Inventor： Akiyoshi Manabe , Masahiro Ohara
Abstract: Provided is an electrolytic apparatus capable of pressurizing hydrogen gas produced by the electrolytic apparatus and removing impurities in the produced hydrogen gas.
In the electrolytic apparatus, gas compression means 101 including an ejector 110, a storage tank 103 storing a circulation liquid, a circulation pipe 105 circulating a fluid mixture of hydrogen gas and the circulation liquid to the ejector, and a circulation pump 104 is provided in a discharge line 12 for hydrogen gas produced by electrolysis, a hydrogen gas discharge pipe 106 and a first valve V1 are provided in the storage tank 103, impurities in the hydrogen gas are transferred to the circulation liquid to remove the impurities from the hydrogen gas, and a pressure of the hydrogen gas stored in the storage tank 103 is raised by controlling a flow rate of the circulation liquid circulated from the storage tank 103 to the ejector 110 and opening and closing of the first valve V1.-
Patent Agency Ranking
6.发明授权公开(公告)号：US11035045B2
公开(公告)日：2021-06-15
申请号：US15528438
申请日：2015-11-19
Inventor： Shigenori Mitsushima , Yasutomo Takakuwa , Yoshinori Nishiki , Akihiro Kato , Akiyoshi Manabe
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. The production apparatus includes a solid polymer electrolyte membrane having proton conductivity, a cathode which is provided on one surface of the solid polymer electrolyte membrane and generates a hydride by reducing a substance to be hydrogenated, a cathode chamber which houses the cathode and is supplied with the substance to be hydrogenated, an electrode catalyst-containing anode which is provided on the other surface of the solid polymer electrolyte membrane and generates protons by oxidizing water, and an anode chamber which houses the anode and is supplied with an electrolytic solution, wherein the substance to be hydrogenated is supplied from the lower end of the cathode chamber, the production apparatus has a hydride outlet through which the product and the like is discharged from the upper end of the cathode chamber, and at least one partition with a width of not less than 0.1 mm is formed inside the cathode camber.
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公开(公告)号：US10676832B2
公开(公告)日：2020-06-09
申请号：US16331049
申请日：2017-09-11
Applicant: DE NORA PERMELEC LTD , NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY , KAWASAKI JUKOGYO KABUSHIKI KAISHA
Inventor： Shigenori Mitsushima , Sho Fujita , Ikuo Nagashima , Yoshinori Nishiki , Akiyoshi Manabe , Akihiro Kato
Abstract: Provided is a method capable of producing, in a simple and low-cost manner, an electrolysis electrode which can be used in alkaline water electrolysis and has superior durability against output variation. The method for producing an anode for alkaline water electrolysis includes: a step of dissolving lithium nitrate and a nickel carboxylate in water to prepare an aqueous solution containing lithium ions and nickel ions, a step of applying the aqueous solution to the surface of a conductive substrate having at least the surface composed of nickel or a nickel-based alloy, and a step of subjecting the conductive substrate to which the aqueous solution has been applied to a heat treatment at a temperature within a range from at least 450° C. to not more than 600° C., thereby forming a catalyst layer composed of a lithium-containing nickel oxide on the conductive substrate.
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公开(公告)号：US10202698B2
公开(公告)日：2019-02-12
申请号：US15129670
申请日：2015-03-24
Applicant: YOKOHAMA NATIONAL UNIVERSITY , DE NORA PERMELEC LTD
Inventor： Shigenori Mitsushima , Yasutomo Takakuwa , Yoshinori Nishiki , Akihiro Kato , Akiyoshi Manabe , Yasushi Sato , Kota Miyoshi , Kojiro Nakagawa , Shinji Oshima
IPC: C25B9/08 , C25B9/16 , C25B3/00 , C25B3/04 , C07C5/10 , C25B11/03 , C25B15/08 , C25B1/10 , C25B9/10 , B01J19/08 , C25B9/00 , C25B11/04 , C25B13/08
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.
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公开(公告)号：US11519082B2
公开(公告)日：2022-12-06
申请号：US16412957
申请日：2019-05-15
Inventor： Shigenori Mitsushima , Kensaku Nagasawa , Yoshinori Nishiki , Akihiro Kato , Setsuro Ogata , Awaludin Zaenal , Akiyoshi Manabe , Koji Matsuoka , Yasushi Sato
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.
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公开(公告)号：US10914014B2
公开(公告)日：2021-02-09
申请号：US15737451
申请日：2016-05-16
Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA , DE NORA PERMELEC LTD , THYSSENKRUPP UHDE CHLORINE ENGINEERS (JAPAN) LTD.
Inventor： Takafumi Ito , Ikuo Shimomura , Yuji Kamei , Akiyoshi Manabe , Akihiro Kato , Terumi Hashimoto
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.
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