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公开(公告)号：US20240091736A1
公开(公告)日：2024-03-21
申请号：US18175005
申请日：2023-02-27
CPC分类号： B01J19/245 , C25B1/04 , C25B1/23 , C25B9/19 , C25B15/021 , C25B15/081 , B01J2219/2401
摘要： A sequestration system includes: an electrolysis part having an electrolysis cell having an anode, a cathode, an anode flow path facing on the anode, and a cathode flow path facing on the cathode; and a reaction part configured to switch a first operation and a second operation, the first operation including producing solid carbon using a catalyst from a first raw material containing a first fluid to be introduced from the cathode flow path, and the second operation including performing a reaction of a second raw material containing a second fluid to be introduced from the anode flow path and solid carbon to be deposited on the catalyst to remove at least a part of the deposited solid carbon from the catalyst.
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公开(公告)号：US20240011172A1
公开(公告)日：2024-01-11
申请号：US18469876
申请日：2023-09-19
发明人： Satoshi MIKOSHIBA , Asahi MOTOSHIGE , Ryota KITAGAWA , Akihiko ONO , Yusuke KOFUJI , Yuki KUDO , Masakazu YAMAGIWA
摘要： An electrochemical reaction device includes: a first reactor including a first room and a second room, the first room being configured to store a gas containing carbon dioxide or a first electrolytic solution containing carbon dioxide, and the second room being configured to store a second electrolytic solution containing water; a cathode disposed in the first room, the cathode being configured to reduce the carbon dioxide and thus produce a reduction product; an anode disposed in the second room, the anode being configured to oxidize the water and thus produce an oxidation product; a first pressure adjuster configured to adjust pressure in the first room; a temperature detector configured to detect a temperature in the first reactor to form a detection signal; and a controller configured to control the pressure adjuster in accordance with the detection signal from the temperature detector.
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公开(公告)号：US20220298660A1
公开(公告)日：2022-09-22
申请号：US17652306
申请日：2022-02-24
发明人： Yusuke KOFUJI , Akihiko ONO , Ryota KITAGAWA , Satoshi MIKOSHIBA
IPC分类号： C25B15/08 , C25B9/60 , C25B3/26 , C25B9/19 , C25B11/052 , C25B11/02 , C25B11/065
摘要： A carbon dioxide electrolytic device includes: an anode configured to oxidize water or a hydroxide ion and thus generate oxygen; an anode solution flow path configured to supply an anode solution to the anode; a cathode configured to reduce carbon dioxide and thus generate a carbon compound; a gas flow path configured to supply a gas to the cathode, the gas containing carbon dioxide; and a diaphragm provided between the anode and the cathode and including a porous film. The porous film includes a first porous surface provided on an anode side and having a first average pore size, and a second porous surface provided on a cathode side and having a second average pore size. The first average pore size being larger than the second average pore size.
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公开(公告)号：US20240360565A1
公开(公告)日：2024-10-31
申请号：US18602075
申请日：2024-03-12
IPC分类号： C25B1/04 , C25B3/26 , C25B9/23 , C25B11/032 , C25B11/061 , C25B11/065 , C25B13/02 , C25B13/08 , C25B15/025
CPC分类号： C25B1/04 , C25B3/26 , C25B9/23 , C25B11/032 , C25B11/061 , C25B11/065 , C25B13/02 , C25B13/08 , C25B15/025
摘要： An electrolysis cell 20 includes: a cathode 31 to reduce a reducible gas; an anode 41 to oxidize an oxidizable substance in an electrolytic solution, the cathode 41 containing titanium; and a separator 50 separating the cathode 31 from the anode 41. The separator 50 includes a porous membrane. The porous membrane gives a pore size distribution defined by a graph having a horizontal axis and a vertical axis, the horizontal axis representing pore sizes of through holes of the porous membrane, the pore sizes being determined by using a porometer, the vertical axis representing a pore size flow distribution of pore volumes corresponding to the pore sizes, and the pore size distribution having a peak top in a range of not less than 0.01 μm nor more than 0.3 μm. The porous membrane has an ISO air permeance of not less than 0.8 μm/Pa·s nor more than 150 μm/Pa·s.
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公开(公告)号：US20230083090A1
公开(公告)日：2023-03-16
申请号：US17651854
申请日：2022-02-21
发明人： Yuki KUDO , Akihiko ONO , Yasuhiro KIYOTA , Yusuke KOFUJI , Masakazu YAMAGIWA , Satoshi MIKOSHIBA , Ryota KITAGAWA
摘要： A carbon dioxide electrolytic device of an embodiment includes: an electrolysis 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 first power supply control unit capable of being connected to a first power supply which supplies power to the electrolysis cell; a second power supply control unit capable of being connected to a second power supply which supplies power to the electrolysis cell; and an integration control unit controlling the first power supply control unit and the second power supply control unit, and switching the supply of power from the first power supply or the second power supply to the electrolysis cell.
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6.发明申请公开(公告)号：US20220298652A1
公开(公告)日：2022-09-22
申请号：US17406256
申请日：2021-08-19
发明人： Masakazu YAMAGIWA , Akihiko ONO , Yusuke KOFUJI , Yuki KUDO , Ryota KITAGAWA , Satoshi MIKOSHIBA
IPC分类号： C25B1/23 , C25B15/08 , C25B11/061 , C25B9/65 , C25B15/02
摘要： A carbon dioxide electrolysis device includes: a cathode configured to reduce carbon dioxide and thus form a carbon compound; an anode configured to oxidize water and thus generate oxygen; a cathode gas flow path facing on the cathode and configured to supply gas containing carbon dioxide; an anode solution flow path facing on the anode and configured to supply an electrolytic solution containing water; and a separator provided between the anode and the cathode. An aspect ratio of the cathode gas flow path is greater than 1 and 3 or less. In a cross-section along a direction perpendicular to a facing surface between the cathode and the cathode gas flow path in the cathode gas flow path, a fluid mean depth M of the cathode gas flow path and a depth h of the cathode gas flow path satisfy a formula: h/8≤M
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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：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：US20220298655A1
公开(公告)日：2022-09-22
申请号：US17446472
申请日：2021-08-31
发明人： Yusuke KOFUJI , Akihiko ONO , Yuki KUDO , Ryota KITAGAWA , Masakazu YAMAGIWA , Jun TAMURA , Satoshi MIKOSHIBA
摘要： A carbon dioxide electrolysis device, includes: an anode configured to oxidize water or a hydroxide ion and thus generate oxygen; an anode solution flow path configured to supply an anode solution to the anode; a cathode configured to reduce carbon dioxide to generate a carbon compound; a gas flow path configured to supply a gas to the cathode, the gas containing carbon dioxide; a diaphragm provided between the anode and the cathode and including a porous film with a hydrophilic polymer supported thereon; and a protective member provided between the anode and the diaphragm and protecting the diaphragm.
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公开(公告)号：US20220290311A1
公开(公告)日：2022-09-15
申请号：US17445872
申请日：2021-08-25
发明人： Akihiko ONO , Yuki KUDO , Yusuke KOFUJI , Ryota KITAGAWA , Satoshi MIKOSHIBA
摘要： A carbon dioxide electrolytic device of an embodiment includes: an electrolysis cell including a cathode, an anode, a gas supply flow path, a solution supply flow path, and a separator; a CO2 gas supply unit configured to supply CO2 gas to the gas supply flow path; an electrolytic solution supply unit configured to supply an electrolytic solution to the solution supply flow path; and a rinse material supply unit configured to supply a rinse material to the gas supply flow path. The gas supply flow path has a first opening, a second opening, and an auxiliary flow path provided to a part of a flow path between the first opening and the second opening, and configured to make at least the rinse material flow therethrough. A switching mechanism configured to switch a flow direction of the rinse material in the auxiliary flow path is connected to the gas supply flow path.
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