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公开(公告)号：US20210292921A1
公开(公告)日：2021-09-23
申请号：US17014103
申请日：2020-09-08
发明人： Yusuke KOFUJI , Akihiko ONO , Yuki KUDO , Ryota KITAGAWA , Asahi MOTOSHIGE , Masakazu YAMAGIWA , Jun TAMURA , Takashi YOSHIDA , Satoshi MIKOSHIBA
摘要： The embodiments provide an electrode catalyst layer for reduction of carbon dioxide, a carbon dioxide reduction electrode, and a carbon dioxide electrolysis apparatus. The catalyst layer is made to exhibit high partial current density and to endure a long-term operation by controlling the wettability. The catalyst layer comprises a metallic catalyst supported on carbon material, an ion-conductive material, and a hydrophilic polymer; and is characterized in that a BET specific surface area (AN2) of said catalyst layer determined by nitrogen gas-adsorption and a BET specific surface area (AH2O) of said catalyst layer determined by water vapor-adsorption are in a ratio (AH2O/AN2) of 0.08 or less.
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公开(公告)号：US20200087805A1
公开(公告)日：2020-03-19
申请号：US16288143
申请日：2019-02-28
发明人： Akihiko ONO , Asahi MOTOSHIGE , Yoshitsune SUGANO , Masakazu YAMAGIWA , Jun TAMURA , Yuki KUDO , Ryota KITAGAWA , Satoshi MIKOSHIBA
摘要： A carbon dioxide electrolytic device comprises an electrolysis cell including: a cathode to reduce a first substance containing carbon dioxide and thus produce a first product containing a carbon compound; a cathode flow path which faces the cathode and through which a gas containing the carbon dioxide flows; an anode to oxidize a second substance containing water or a hydroxide and thus produce a second product containing oxygen; an anode flow path which faces the anode and through which an electrolytic solution containing the water or the hydroxide flows; a water-repellent porous body which faces the anode flow path and through which the second product flows; and a separator provided between the anode and the cathode.
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公开(公告)号：US20190085473A1
公开(公告)日：2019-03-21
申请号：US15915408
申请日：2018-03-08
发明人： Yoshitsune SUGANO , Akihiko ONO , Jun TAMURA , Ryota KITAGAWA , Asahi MOTOSHIGE , Yuki KUDO , Masakazu YAMAGIWA , Takayuki TSUKAGOSHI , Satoshi MIKOSHIBA
摘要： A reduction catalyst body for carbon dioxide of an embodiment includes a metal layer, and a projection provided on the metal layer. The projection is constituted of an aggregate of fine metal particles, and possesses a polyhedral structure having surfaces of three faces or more of a polygon. The projection has a site of reducing carbon dioxide, as at least a part of the surfaces.
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公开(公告)号：US20240124995A1
公开(公告)日：2024-04-18
申请号：US18397131
申请日：2023-12-27
发明人： Ryota KITAGAWA , Yusuke KOFUJI , Asahi MOTOSHIGE , Masakazu YAMAGIWA , Jun TAMURA , Yuki KUDO , Akihiko ONO , Satoshi MIKOSHIBA
摘要： An electrochemical reaction device in an embodiment includes: an electrochemical reaction cell including a first accommodation part for accommodating carbon dioxide, a second accommodation part for accommodating an electrolytic solution containing water, or water vapor, a diaphragm provided between the first accommodation part and the second accommodation part, a reduction electrode arranged in the first accommodation part, and an oxidation electrode arranged in the second accommodation part, a detection unit detecting a reaction amount in the electrochemical reaction cell; a regulation unit regulating an amount of the carbon dioxide to be supplied to the first accommodation part, and a control unit controlling the regulation unit based on a detection signal of the detection unit.
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公开(公告)号：US20210292926A1
公开(公告)日：2021-09-23
申请号：US17017427
申请日：2020-09-10
发明人： Akihiko ONO , Yuki KUDO , Yusuke KOFUJI , Asahi MOTOSHIGE , Ryota KITAGAWA , Masakazu YAMAGIWA , Satoshi MIKOSHIBA
摘要： A carbon dioxide electrolytic device in an embodiment includes: an electrolysis cell including a cathode including a CO2 gas supply flow path, an anode, and a separator; a CO2 supply unit configured to supply CO2 gas to the gas supply flow path; and a rinse material supply unit configured to make a rinse material containing H2O flow through the CO2 gas supply flow path. The CO2 gas supply flow path includes a first opening provided on one end side, a second opening provided on another end side, and a third opening provided between the first opening and the second opening. The rinse material supply unit is configured to make the rinse material flow at least between the first opening and the third opening of the CO2 gas supply flow path.
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公开(公告)号：US20200002829A1
公开(公告)日：2020-01-02
申请号：US16560380
申请日：2019-09-04
发明人： Yuki KUDO , Akihiko ONO , Masakazu YAMAGIWA , Ryota KITAGAWA , Jun TAMURA , Yoshitsune SUGANO , Takayuki TSUKAGOSHI , Asahi MOTOSHIGE , Satoshi MIKOSHIBA
摘要： An electrolytic cell for carbon dioxide of an embodiment includes: an anode part including an anode to oxidize water or a hydroxide ion and thus produce oxygen and an anode solution flow path to supply an anode solution to the anode; a cathode part including a cathode to reduce carbon dioxide and thus produce a carbon compound, a cathode solution flow path to supply a cathode solution to the cathode, a gas flow path to supply the carbon dioxide to the cathode, and a hydrophobic porous body disposed between the cathode and the gas flow path; and a separator to separate the anode part and the cathode part from each other.
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7.发明申请公开(公告)号：US20180073153A1
公开(公告)日：2018-03-15
申请号：US15449000
申请日：2017-03-03
发明人： Arisa YAMADA , Satoshi MIKOSHIBA , Akihiko ONO , Yuki KUDO , Jun TAMURA , Ryota KITAGAWA , Eishi TSUTSUMI , Masakazu YAMAGIWA , Yoshitsune SUGANO , Asahi MOTOSHIGE
CPC分类号： C25B11/0478 , B05D1/005 , C25B1/003 , C25B1/04 , C25B11/0405 , C25B11/0415 , C25D9/04 , C25D9/08 , Y02E60/368 , Y02P20/135
摘要： The present embodiments provide: a catalyst having excellent optical transparency, catalytic activity and durability; and a method of producing the same. This catalyst comprises a graphene oxide layer and a nickel-iron layered double hydroxide layer supported on the surface of the graphene oxide layer. The graphene oxide layer has an average thickness of 0.33 to 4 nm. The catalyst can be produced by arranging graphene oxide on a substrate by a coating method and then allowing NiFe-LDH to be supported thereon.
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8.发明公开公开(公告)号：US20230323549A1
公开(公告)日：2023-10-12
申请号：US17820679
申请日：2022-08-18
发明人： Maki YONETSU , Yusuke KOFUJI , Ryota KITAGAWA , Satoshi MIKOSHIBA , Yuki KUDO , Asahi MOTOSHIGE , Akihiko ONO , Takashi YOSHIDA
IPC分类号： C25B9/17 , C25B11/052 , C25B11/065 , C25B11/054 , C25B11/095 , C25B1/23 , C25B3/26
CPC分类号： C25B11/095 , C25B1/23 , C25B3/26 , C25B9/17 , C25B11/052 , C25B11/054 , C25B11/065
摘要： An electrode catalyst layer for electrolytic cell 3 of an embodiment includes: a carbon material; a metal catalyst supported on the carbon material; and a water-repellent organic substance. In the electrode catalyst layer for electrolytic cell of the embodiment, the water-repellent organic substance includes an organic substance containing sulfur. A metal-sulfur bond is formed between the organic substance containing sulfur and the metal catalyst. A mass ratio (S/M) of a sulfur element (S) to a metal element (M) in the metal catalyst in the catalyst layer is not less than 0.03 nor more than 0.1.
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公开(公告)号：US20230250546A1
公开(公告)日：2023-08-10
申请号：US18301711
申请日：2023-04-17
发明人： Satoshi MIKOSHIBA , Asahi MOTOSHIGE , Ryota KITAGAWA , Akihiko ONO , Yusuke KOFUJI , Yuki KUDO
CPC分类号： C25B15/08 , C25B1/04 , C25B3/26 , C25B9/19 , C25B9/77 , C25B15/081 , C25B15/083 , C25B15/087
摘要： CO2 reaction methods may include: supplying CO2-containing gas to a first accommodation part (AP) of an electrochemical reaction cell (ERC) from a first supply unit, the ERC including the first AP, a second AP, a cathode in the first AP, and an anode in the second AP; supplying an electrolytic solution containing H2O to the second AP; controlling ERC temperature to 60 to 150° C. so discharged gas and discharged solution discharged from the first and second APs are 60 to 100° C.; supplying current to the electrodes, reducing the CO2 at the reduction electrode and discharge gas from the first AP, and oxidizing H2O and discharge the solution containing O2 and CO2 from the second AP; separating O2 and CO2 gas from the discharged solution; combusting the O2 to produce CO2, and discharging mixed-CO2 gas containing combustion CO2 and CO2; and supplying the mixed-CO2 gas to the first AP.
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公开(公告)号：US20230243052A1
公开(公告)日：2023-08-03
申请号：US18299230
申请日：2023-04-12
发明人： Asahi MOTOSHIGE , Ryota KITAGAWA , Akihiko ONO , Yoshitsune SUGANO , Yuki KUDO , Jun TAMURA , Masakazu YAMAGIWA , Satoshi MIKOSHIBA
IPC分类号： C25B11/091 , C25B1/04 , C25B3/25 , C25B9/23 , C25B9/73 , C25B11/051 , C25B11/057
CPC分类号： C25B11/091 , C25B1/04 , C25B3/25 , C25B9/23 , C25B9/73 , C25B11/051 , C25B11/057
摘要： A CO2 electrolyzing method may include: supplying gas containing CO2 and/or a first electrolytic solution (ES) containing CO2 to a first accommodation part (AP) of an electrolysis cell so the gas or first ES contacts a reduction electrode in the first AP, the electrolysis cell including the reduction electrode, an oxidation electrode, the first AP, and a second AP; supplying a second ES containing water and CO2, HCO3-, and/or CO32- to the second AP so the second ES contacts the oxidation electrode in the second AP, the oxidation electrode including a conductive metal substrate and oxidation catalyst layer thereon, of a 20 to 70 mass% Fe, balance Ni, a nickel and iron bonding state in the composite body including Ni(OH)2, NiOOH, and FeOOH; supplying an electric current to the reduction and oxidation electrode, to reduce the CO2 in the reduction electrode and produce a carbon compound.
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