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：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：US20220220622A1

公开(公告)日：2022-07-14

申请号：US17605835

申请日：2020-04-22

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Qingxin JIA ,  Ichitaro WAKI ,  Shinichi TANABE

IPC: C25B1/23 ,  C25B9/23 ,  C25B11/051

Abstract: Techniques may relate to an electrode having high production efficiency of a synthetic gas containing at least CO. Such techniques relating to an electrode may include: a catalyst that produces at least carbon monoxide by a reduction reaction; an electrode material including the catalyst; and a solid base additive provided at least on the electrode material.

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：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.

公开(公告)号：US20230155244A1

公开(公告)日：2023-05-18

申请号：US17995676

申请日：2021-04-07

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Futoshi UTSUNO ,  Qingxin JIA ,  Ichitaro WAKI ,  Hiroshi TOMITA

IPC: H01M50/434 ,  H01M10/52 ,  H01M50/449

CPC classification number: H01M50/434 ,  H01M10/523 ,  H01M50/449

Abstract: An ion recovery device including an ion selective permeable membrane with an ion conductive layer containing a lithium ion conductor formed of an inorganic substance, and a support layer is formed of a porous body wherein the ion selective permeable membrane has a configuration (I). In configuration (I) the ion conductive layer is provided in contact with one principal surface side of a support layer, and an electrode is provided in contact with another principal surface side opposite to the one principal surface side on which the ion conductive layer is provided.

公开(公告)号：US20220006100A1

公开(公告)日：2022-01-06

申请号：US17414767

申请日：2019-12-19

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Qingxin JIA ,  Ichitaro WAKI

IPC: H01M4/88 ,  H01M4/90 ,  H01M4/92 ,  C25B11/054 ,  C25B11/081 ,  C25B11/075 ,  C25B1/04 ,  C25B1/23

Abstract: A technique may produce a composite at a low temperature by a reducing agent that is easy to handle. A technique may produce a composite in which a metal simple substance or a metal oxide derived from reduced cations, or both of them are supported on a carrier. The technique may include at least: preparing a liquid phase mixture containing at least an alcohol compound as a first reducing agent, a phosphinic acid or a salt thereof as a second reducing agent, the carrier, and a source compound of one or more cations selected including Au, Ag, Cu, Pt, Rh, Ru, Re, Pd, and/or Ir; and reducing the cations in the liquid phase mixture.