公开(公告)号：US11851774B2

公开(公告)日：2023-12-26

申请号：US17405336

申请日：2021-08-18

Applicant: KABUSHIKI KAISHA TOSHIBA

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

IPC: C25B1/23 ,  C25B15/027 ,  C25B9/70 ,  C25B9/67 ,  C25B9/19 ,  C25B15/029 ,  C25B1/02

CPC classification number: C25B1/23 ,  C25B1/02 ,  C25B9/19 ,  C25B9/67 ,  C25B9/70 ,  C25B15/027 ,  C25B15/029

Abstract: A carbon dioxide electrolytic device according to an embodiment includes: an electrolysis cell including a reduction electrode, an oxidation electrode, a gas flow path supplying gas containing CO2 to the reduction electrode, a liquid flow path supplying an electrolytic solution containing water to the oxidation electrode, and a diaphragm separating the reduction electrode from the oxidation electrode; a first supply path connected to the gas flow path; a first discharge path connected to the gas flow path; a first moisture content detecting unit installed in the first discharge path to detect a moisture content in the gas flowing in the first discharge path; a moisture content adjusting unit configured to adjust a moisture content supplied to the reduction electrode; and a control unit configured to control the moisture content adjusting unit based on a detection signal of the first moisture content detecting unit.

公开(公告)号：US11795557B2

公开(公告)日：2023-10-24

申请号：US16811716

申请日：2020-03-06

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Satoshi Mikoshiba ,  Asahi Motoshige ,  Ryota Kitagawa ,  Akihiko Ono ,  Yusuke Kofuji ,  Yuki Kudo ,  Masakazu Yamagiwa

IPC: C25C3/20 ,  C25B15/02 ,  C25B9/19 ,  C25B1/00 ,  C25B3/25 ,  C25B9/77 ,  C25B9/73 ,  C25B1/04

CPC classification number: C25B15/02 ,  C25B1/00 ,  C25B1/04 ,  C25B3/25 ,  C25B9/19 ,  C25B9/73 ,  C25B9/77

Abstract: 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.

公开(公告)号：US11339482B2

公开(公告)日：2022-05-24

申请号：US15915408

申请日：2018-03-08

Applicant: KABUSHIKI KAISHA TOSHIBA

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

IPC: C25B3/25 ,  B01J23/38 ,  B01J35/02 ,  B01J23/50 ,  B01J35/00 ,  C25B11/081 ,  B01J23/06

Abstract: 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.

公开(公告)号：US11255020B2

公开(公告)日：2022-02-22

申请号：US16560669

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: C25B3/25 ,  C25B1/04 ,  C25B15/02 ,  C25B15/08 ,  C07C29/153

Abstract: A carbon dioxide reduction system comprises: an electrolytic unit including an electrolysis cell having a cathode to reduce a first substance containing carbon dioxide and thus produce a first product containing a carbon compound, and an anode to oxidize a second substance containing water or hydroxide ions and thus produce a second product containing oxygen, a detection unit to acquire data defining operation states of the electrolysis cell, and an electrolytic regulator to regulate electrolysis conditions of the electrolysis cell; a compression unit including a compressor to compress the first product, and a compressor regulator to regulate compression conditions of the first product by the compressor; and a controller programmed to predict a flow rate of the carbon compound discharged from the electrolysis cell in accordance with the data to control regulation of the compression conditions in accordance with the predicted flow rate.

公开(公告)号：US11130723B2

公开(公告)日：2021-09-28

申请号：US16830708

申请日：2020-03-26

Applicant: KABUSHIKI KAISHA TOSHIBA

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

IPC: C25B3/00 ,  C07C29/153 ,  C25B15/02 ,  C25B1/00 ,  C25B1/04 ,  C25B3/25 ,  C25B9/19 ,  C25B9/73

Abstract: A carbon dioxide electrolytic device of an embodiment includes: an anode part including an anode which oxidizes water or hydroxide ions to produce oxygen; a cathode part including a cathode which reduces carbon dioxide to produce a carbon compound, a cathode solution flow path which supplies a cathode solution to the cathode, and a gas flow path which supplies carbon dioxide to the cathode; a separator which separates the anode part and the cathode part; and a differential pressure control unit which controls a differential pressure between a pressure of the cathode solution and a pressure of the carbon dioxide so as to adjust a production amount of the carbon dioxide produced by a reduction reaction in the cathode part.

公开(公告)号：US10829861B2

公开(公告)日：2020-11-10

申请号：US15690610

申请日：2017-08-30

Applicant: KABUSHIKI KAISHA TOSHIBA

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

IPC: C25B11/04 ,  C25B1/22 ,  C25B3/04 ,  C25B9/00 ,  B01J31/02 ,  C25B1/00 ,  C25B9/08 ,  B01J31/16

Abstract: The present embodiments provide a reduction catalyst realizing high reaction efficiency and a reduction reactor employing the catalyst. The reduction catalyst of the embodiment comprises an electric conductor and an organic layer having organic modifying groups placed on the surface of the conductor. The organic modifying groups have an aromatic ring having two or more nitrogen atoms. The reduction catalyst is used in a reduction reactor, and the reactor is also provided.

公开(公告)号：US20200270756A1

公开(公告)日：2020-08-27

申请号：US16563546

申请日：2019-09-06

Applicant: Kabushiki Kaisha Toshiba

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

IPC: C25B11/04 ,  C25B11/03 ,  C25B11/12 ,  C25B3/04 ,  C25B3/02 ,  C25B9/10

Abstract: The embodiments provide an electrode catalyst layer for an electrolysis cell, and also an electrolysis cell and a carbon dioxide electrolysis apparatus comprising that layer. The catalyst layer has a controlled porous structure, and can realize a high partial current density. The catalyst layer of the embodiment comprises carbonous catalyst carriers, a metallic catalyst loaded on the carriers, and an ion-conductive material. The catalyst layer contains pores of 5 to 200 μm diameters, and the pores have a volume per weight of the catalyst layer in the range of 3.0 to 10 mL/g in total.

公开(公告)号：US10597787B2

公开(公告)日：2020-03-24

申请号：US15260982

申请日：2016-09-09

Applicant: Kabushiki Kaisha Toshiba

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

IPC: C25B1/00 ,  C25B1/04 ,  C25B3/04 ,  C25B11/03 ,  H01L31/056 ,  H01L31/078 ,  B01J35/00 ,  H01G9/20

Abstract: An electrochemical reaction device includes: an electrolytic solution tank to store an electrolytic solution; an oxidation electrode disposed in the electrolytic solution tank; a reduction electrode disposed in the electrolytic solution tank; and a generator connected to the oxidation electrode and the reduction electrode. At least one of the oxidation electrode or the reduction electrode has a porous structure containing fine pores.

公开(公告)号：US10544513B2

公开(公告)日：2020-01-28

申请号：US16286837

申请日：2019-02-27

Applicant: Kabushiki Kaisha Toshiba

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

IPC: C25B9/00 ,  C25B15/08 ,  C25B9/04 ,  C25B1/06 ,  C25B9/18 ,  C25B9/06 ,  C25B15/02 ,  C25B1/04 ,  C25B1/00

Abstract: An electrochemical reaction device includes: a first electrolytic solution tank having a first storage part and a second storage part; a second electrolytic solution tank having a third storage part and a fourth storage part; a first reduction electrode layer immersed in a first electrolytic solution; a first oxidation electrode layer immersed in a second electrolytic solution; a first generator electrically connected to the first reduction electrode and the first oxidation electrode layer; a second reduction electrode layer immersed in a third electrolytic solution; a second oxidation electrode layer immersed in a fourth electrolytic solution; a second generator electrically connected to the second reduction electrode and the second oxidation electrode layer; and at least one flow path out of a first flow path connecting the first storage part and the fourth storage part and a second flow path connecting the second storage part and the third storage part.

公开(公告)号：US20200002823A1

公开(公告)日：2020-01-02

申请号：US16560669

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: C25B3/04 ,  C25B15/02 ,  C25B15/08 ,  C25B1/04 ,  C07C29/153

Abstract: A carbon dioxide reduction system comprises: an electrolytic unit including an electrolysis cell having a cathode to reduce a first substance containing carbon dioxide and thus produce a first product containing a carbon compound, and an anode to oxidize a second substance containing water or hydroxide ions and thus produce a second product containing oxygen, a detection unit to acquire data defining operation states of the electrolysis cell, and an electrolytic regulator to regulate electrolysis conditions of the electrolysis cell; a compression unit including a compressor to compress the first product, and a compressor regulator to regulate compression conditions of the first product by the compressor; and a controller programmed to predict a flow rate of the carbon compound discharged from the electrolysis cell in accordance with the data to control regulation of the compression conditions in accordance with the predicted flow rate.