公开(公告)号：US11434575B2

公开(公告)日：2022-09-06

申请号：US16394869

申请日：2019-04-25

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yuki Kudo ,  Satoshi Mikoshiba ,  Akihiko Ono ,  Jun Tamura ,  Ryota Kitagawa ,  Masakazu Yamagiwa ,  Yoshitsune Sugano

IPC: C25B11/02 ,  C23C8/80 ,  C25D11/00 ,  C23C8/10 ,  C23F17/00 ,  C25B1/04 ,  C25B3/25 ,  C25B9/17

Abstract: A reduction electrode of an embodiment includes a metal base material and a plurality of metal nanowires provided on the metal base material. The plurality of metal nanowires include metal nanowires whose average height of contour curve of surface is 20 nm or less for 50% or more in a number ratio. The plurality of metal nanowires are formed by reducing a plurality of metal oxides each having a nanowire shape formed on the metal base material by an electrochemical reduction method. A reduction process of the metal oxides includes a first process of passing a current under a constant current condition where an absolute value is 5 mA/cm2 or more through the plurality of metal oxides, and a second process of passing a current under a constant potential condition through the plurality of metal oxides.

公开(公告)号：US11098409B2

公开(公告)日：2021-08-24

申请号：US16560082

申请日：2019-09-04

Applicant: Kabushiki Kaisha Toshiba

Inventor： Yuki Kudo ,  Akihiko Ono ,  Masakazu Yamagiwa ,  Ryota Kitagawa ,  Jun Tamura ,  Yoshitsune Sugano ,  Asahi Motoshige ,  Satoshi Mikoshiba

IPC: C25B13/04 ,  C25B11/03 ,  C25B1/00 ,  C25B3/25 ,  C25B9/23

Abstract: 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, and a liquid passing member disposed between the cathode and the cathode solution flow path and having a pore allowing the cathode solution to pass through while holding the cathode solution; and a separator to separate the anode part and the cathode part from each other.

公开(公告)号：US20200087233A1

公开(公告)日：2020-03-19

申请号：US16288145

申请日：2019-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Akihiko ONO ,  Yuki Kudo ,  Ryota Kitagawa ,  Masakazu Yamagiwa ,  Jun Tamura ,  Satoshi Mikoshiba ,  Yoshitsune Sugano ,  Asahi Motoshige

IPC: C07C29/153 ,  C25B1/10 ,  C25B3/04 ,  G01N33/00 ,  G01N27/30

Abstract: A carbon dioxide electrolytic device includes: an electrolysis cell including a cathode, an anode, cathode and anode flow paths, and a separator; a carbon dioxide source to supply carbon dioxide to the cathode flow path; a solution source to supply an electrolytic solution containing water to the anode flow path; at least one sensor to acquire at least one data of a data indicating a discharge amount per unit time of a liquid containing water to be discharged from at least one flow path and a data indicating a concentration of at least one ion in the liquid; a refresh material source including a gas source to supply a gaseous substance to the at least one flow path; and a controller programmed to stop the supply of the carbon dioxide and the electrolytic solution, and start supply of a gaseous substance from the refresh material source, in accordance with the at least one data.

公开(公告)号：US10590550B2

公开(公告)日：2020-03-17

申请号：US15251825

申请日：2016-08-30

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Akihiko Ono ,  Satoshi Mikoshiba ,  Yuki Kudo ,  Ryota Kitagawa ,  Jun Tamura ,  Yoshitsune Sugano ,  Eishi Tsutsumi ,  Masakazu Yamagiwa

IPC: C25B9/20 ,  C25B1/00 ,  C25B1/10 ,  C25B1/08 ,  C25B3/04 ,  C25B9/10 ,  C25B15/08

Abstract: An electrochemical reaction device includes a first unit group having a plurality of first electrochemical reaction units and a second unit group having a plurality of second electrochemical reaction units. Respective electrolytic tanks of the plurality of first electrochemical reaction units are serially connected with each other. Respective electrolytic tanks of the plurality of second electrochemical reaction units are serially connected with each other. The electrolytic tanks of the plurality of second electrochemical reaction units are parallelly connected to the electrolytic tanks of the plurality of first electrochemical reaction units.

公开(公告)号：US20200002827A1

公开(公告)日：2020-01-02

申请号：US16560332

申请日：2019-09-04

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Asahi Motoshige ,  Ryota Kitagawa ,  Akihiko Ono ,  Yoshitsune Sugano ,  Yuki Kudo ,  Jun Tamura ,  Masakazu Yamagiwa ,  Satoshi Mikoshiba

IPC: C25B11/04 ,  C25B1/10 ,  C25B3/04 ,  C25B9/10

Abstract: An oxidation electrode in an embodiment includes: a conductive substrate made of a metal material including titanium, titanium alloy, or stainless steel; and an oxidation catalyst layer provided on the conductive substrate and made of a composite body containing nickel and iron. A bonding state of nickel and iron in the composite body containing nickel and iron is composed of Ni(OH)2, NiOOH, and FeOOH.

公开(公告)号：US10378116B2

公开(公告)日：2019-08-13

申请号：US15248812

申请日：2016-08-26

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yuki Kudo ,  Satoshi Mikoshiba ,  Akihiko Ono ,  Jun Tamura ,  Eishi Tsutsumi ,  Ryota Kitagawa ,  Chingchun Huang ,  Yoshitsune Sugano

IPC: C25B1/10 ,  C25B9/08 ,  C25B1/00 ,  C25B9/00

Abstract: A photoelectrochemical reaction device of an embodiment includes: a first stack including a first electrode, a second electrode, and a photovoltaic layer provided therebetween; a second stack including a third electrode electrically connected to the first electrode, a fourth electrode electrically connected to the second electrode, and an ion migration layer provided therebetween; and an electrolytic solution tank storing a first electrolytic solution in which the third electrode is immersed and a second electrolytic solution in which the fourth electrode is immersed. One of the third and fourth electrodes causes an oxidation reaction, and the other of the third and fourth electrodes causes a reduction reaction. The third and fourth electrodes have ion permeability. An area of the second stack is larger than that of the first stack.

公开(公告)号：US10233549B2

公开(公告)日：2019-03-19

申请号：US15255739

申请日：2016-09-02

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Akihiko Ono ,  Satoshi Mikoshiba ,  Yuki Kudo ,  Ryota Kitagawa ,  Jun Tamura ,  Eishi Tsutsumi ,  Yoshitsune Sugano

IPC: C25B9/08 ,  C25B15/02 ,  C25B9/00 ,  C25B1/00 ,  C25B1/10 ,  C25B3/04

Abstract: To convert light into a chemical substance with high conversion efficiency. A device, comprising: a photovoltaic layer having a first face and a second face; an oxidation electrode layer electrically connected to the first face of the photovoltaic layer; a reduction electrode layer electrically connected to the second face of the photovoltaic layer; a first electrolytic solution being supplied to the oxidation electrode layer; a second electrolytic solution being supplied to the reduction electrode layer; and a porous layer, provided to in contact with at least one of the first electrolytic solution and the second electrolytic solution, having fine pores through which a product produced by the oxidation reaction or the reduction reaction passes, and being given a temperature gradient wherein the product being purified by the porous layer.

公开(公告)号：US12012663B2

公开(公告)日：2024-06-18

申请号：US17446472

申请日：2021-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yusuke Kofuji ,  Akihiko Ono ,  Yuki Kudo ,  Ryota Kitagawa ,  Masakazu Yamagiwa ,  Jun Tamura ,  Satoshi Mikoshiba

IPC: C25B9/19 ,  C25B1/23 ,  C25B3/26 ,  C25B9/65 ,  C25B13/08

CPC classification number: C25B9/19 ,  C25B1/23 ,  C25B9/65 ,  C25B13/08 ,  C25B3/26

Abstract: 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.

公开(公告)号：US11286573B2

公开(公告)日：2022-03-29

申请号：US16559905

申请日：2019-09-04

Applicant: Kabushiki Kaisha Toshiba

Inventor： Akihiko Ono ,  Yuki Kudo ,  Ryota Kitagawa ,  Masakazu Yamagiwa ,  Jun Tamura ,  Satoshi Mikoshiba ,  Yoshitsune Sugano ,  Asahi Motoshige ,  Takayuki Tsukagoshi

IPC: C25B9/19 ,  C25B1/04 ,  C25B15/02 ,  C25B15/08 ,  C25B9/73 ,  C25B9/05 ,  C25B9/23 ,  C25B9/65

Abstract: A carbon dioxide electrolytic device comprises: an electrolysis cell including a first electrode having a first catalyst to reduce carbon dioxide, a second electrode having a second catalyst to oxidize water or hydroxide ions, a first electrode flow path facing the first electrode, a second electrode flow path facing the second electrode, and a separator separating the first and second electrodes; a power controller; a first flow path through which the carbon dioxide flows; a second flow path through which the carbon compound flows; a third flow path through which an electrolytic solution containing the water flows; a fourth flow path through which the oxygen flows; a first valve to connect the first electrode flow path and the first flow path; a second valve to connect the first electrode flow path and the second flow path; a tank connected to the first electrode flow path and configured to store a rinse solution; and a controller programmed to control opening and closing of the first and second valves in accordance with performance requirements of the electrolysis cell.

公开(公告)号：US20200017985A1

公开(公告)日：2020-01-16

申请号：US16560617

申请日：2019-09-04

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Masakazu YAMAGIWA ,  Ryota Kitagawa ,  Yuki Kudo ,  Akihiko Ono ,  Satoshi Mikoshiba ,  Jun Tamura ,  Yoshitsune Sugano ,  Asahi Motoshige

IPC: C25B15/08 ,  C25B1/04 ,  C25B9/10 ,  B01D53/22

Abstract: An electrochemical reaction device comprises: an anode unit to oxidize water and thus generate oxygen; a cathode unit to reduce carbon dioxide and thus generate a carbon compound and hydrogen; a separator separating the anode and cathode units; and a power supply connected to the anode and cathode units, the cathode unit including: a porous member having a first surface and a second surface; a flow path plate facing the first surface; and a reduction catalyst on the second surface, and the flow path plate including: a flow path through which a target gas containing the carbon dioxide flows; and a porous film separating a first space and a second space inside the flow path and being permeated with an ionic liquid, the ionic liquid being configured to separate the carbon dioxide from the target gas.