公开(公告)号：US20240368775A1

公开(公告)日：2024-11-07

申请号：US18561102

申请日：2022-05-17

Applicant: UNIVERSITY OF YAMANASHI ,  TAKAHATA PRECISION CO.,LTD. ,  IDEMITSU KOSAN CO.,LTD.

Inventor： Kenji MIYATAKE ,  Naoki YOKOTA ,  Katsuya NAGASE ,  Hiroyuki KANEKO ,  Yuji OKAMOTO ,  Qingxin JIA

IPC: C25B1/23 ,  C25B9/23 ,  C25B11/054 ,  C25B13/08

Abstract: Provided are a technique related to a CO2 electrolysis device that is more excellent in production efficiency for producing a reduction product (CO or the like) from CO2, and a technique related to a CO2 electrolysis device that can suppress a decrease in CO2 reduction efficiency and be stably operated. An aspect of the present invention is a CO2 electrolysis device including an electrode material. The CO2 electrolysis device includes: a support including a conductive carrier and a catalyst supported on the conductive carrier, the catalyst including any one or more of particles of a metal complex, a metal, or an inorganic compound; and an anion exchange resin covering a part or the whole of the surface of the support and including an ionomer of the following formula (1): where m and n represent natural numbers of 1 to 200.

公开(公告)号：US20240295042A1

公开(公告)日：2024-09-05

申请号：US18550569

申请日：2022-03-08

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Kazuhito SAITO ,  Yuji OKAMOTO ,  Hiroyuki KANEKO ,  Qingxin JIA

IPC: C25B15/08 ,  C25B3/26

CPC classification number: C25B15/085 ,  C25B3/26

Abstract: A solid-electrolyte electrolytic device may be excellent in operation rate and have device life without stopping a CO2 reduction reaction. A solid-electrolyte electrolytic device may include: a cathode that performs a reduction reaction; an anode that constitutes one pair of electrodes together with the cathode; an electrolytic solution that is in contact with the anode and supports an oxidation-reduction reaction; a solid electrolyte that is disposed between the cathode and the anode; and a refresh unit that supplies a recovery liquid for diluting or replacing the electrolytic solution to the anode to remove a salt precipitated between the cathode and the solid electrolyte, the recovery liquid being a solution with a lower concentration of a cation identical to a cation included in the salt than the electrolytic solution.

公开(公告)号：US20240254638A1

公开(公告)日：2024-08-01

申请号：US18560814

申请日：2022-05-20

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Hiroyuki KANEKO ,  Yuji OKAMOTO

IPC: C25B11/054 ,  C25B9/23 ,  C25B11/052 ,  C25B11/065 ,  C25B11/081

CPC classification number: C25B11/054 ,  C25B9/23 ,  C25B11/052 ,  C25B11/065 ,  C25B11/081

Abstract: A method for manufacturing a composite in which at least one of an elemental metal or a metal compound is carried on a carrier. The method includes exposing a dispersion liquid containing a solvent and the carrier to a reduced-pressure environment of less than 80 kPa (absolute pressure) at normal temperature, preparing a raw material mixture liquid by mixing a metal-ion supplying agent which is a metal ion source of the elemental metal or the metal compound with the dispersion liquid, and mixing a reducing agent with the raw material mixture liquid and causing the elemental metal or the metal compound to be carried on a surface of the carrier.