公开(公告)号：US20250154673A1

公开(公告)日：2025-05-15

申请号：US18839478

申请日：2023-02-22

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Hiroyuki KANEKO ,  Qingxin JIA

IPC: C25B11/095 ,  C25B9/23 ,  C25B11/032

Abstract: A catalyst layer that can be suppressed in functional deterioration, an additive for a carbon dioxide reduction catalyst that is excellent in the electroconductivity of the electrode catalyst layer and the electrolysis efficiency of the electrolytic reduction reaction of carbon dioxide, an electrode, an ion exchange membrane-electrode assembly, and a solid electrolyte electrolysis apparatus. The additive for a carbon dioxide reduction catalyst includes a carrier having an aryl group on a surface thereof and carbon.

公开(公告)号：US20250146145A1

公开(公告)日：2025-05-08

申请号：US18839756

申请日：2023-02-22

Applicant: OSAKA UNIVERSITY ,  IDEMITSU KOSAN CO., LTD.

Inventor： Kazuhide KAMIYA ,  Rino SUGIMOTO ,  Qingxin JIA ,  Hiroyuki KANEKO

IPC: C25B9/23 ,  C25B3/26 ,  C25B11/032 ,  C25B11/037 ,  C25B11/065 ,  C25B11/091 ,  C25B13/05

Abstract: A catalyst that has a high electrolytic activity and a high CO2 reduction reaction rate and a method of producing the same, a cathode, an ion exchange membrane-electrode assembly, and a solid electrolyte electrolysis apparatus are provided. The catalyst includes a metal ion selected from the group consisting of a copper ion, a nickel ion, an iron ion, a cobalt ion, a zinc ion, a manganese ion, a molybdenum ion, and an aluminum ion, a nitrogen-containing compound, and a carrier containing carbon having a primary particle diameter of 5 to 200 nm, the metal ion is coordinated to the nitrogen atom on the nitrogen-containing compound, the catalyst has a content of the metal ion coordinated to the nitrogen atom of 0.7% by mass or more, and the catalyst has a particle diameter of 10 nm to 50 μm.

公开(公告)号：US20240158929A1

公开(公告)日：2024-05-16

申请号：US18550400

申请日：2022-03-08

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Hiroyuki KANEKO

IPC: C25B3/26 ,  C25B9/23 ,  C25B11/054 ,  C25B13/08

CPC classification number: C25B3/26 ,  C25B9/23 ,  C25B11/054 ,  C25B13/08

Abstract: An electrode material containing a carrying body and an anion exchange resin. The carrying body includes a conductive carrier and a catalyst, the catalyst is supported on the conductive carrier, and the catalyst includes one or a plurality of particles selected from a metal complex, a metal, and an inorganic compound. The anion exchange resin covers a part or all of a surface of the carrying body, the anion exchange resin includes an ionomer containing one or a plurality of groups selected from a primary amino group, a secondary amino group, a tertiary amino group, and a quaternary ammonium group, and a basic site density of the ionomer is 2.0 mmol/cm3 or more and 5.0 mmol/cm3 or less.

公开(公告)号：US20250129497A1

公开(公告)日：2025-04-24

申请号：US18835607

申请日：2023-02-22

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Hiroyuki KANEKO ,  Qingxin JIA

IPC: C25B11/069 ,  C25B9/23 ,  C25B11/032 ,  C25B11/054

Abstract: A catalyst having a high production efficiency of a synthetic gas, including CO, a cathode, an ion exchange membrane-electrode assembly, and a solid electrolyte electrolysis apparatus. The catalyst includes fine particles selected from gold, silver, copper, nickel, iron, cobalt, zinc, chromium, palladium, tin, manganese, aluminum, indium, bismuth, molybdenum, and carbon nitride, a metal complex including a metal selected from copper, nickel, iron, cobalt, zinc, manganese, molybdenum, and aluminum, or an ion of the metal, having a ligand coordinated to the metal, and a carrier including carbon the carrier having a nitrogen-containing heteroaryl group having a primary amino group on a surface.

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.

公开(公告)号：US20240191047A1

公开(公告)日：2024-06-13

申请号：US18550577

申请日：2022-03-08

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Hiroyuki KANEKO ,  Qingxin JIA

IPC: C25B13/08 ,  C25B1/23

CPC classification number: C25B13/08 ,  C25B1/23

Abstract: A polymer ion exchange membrane including an ion exchange resin (A) having a basic site density DA and an ion exchange resin (B) having a basic site density DB, wherein a difference (DA—DB) between the basic site density DA and the basic site density DB is 0.3 mmol/cm3 or more.