公开(公告)号：US20240309527A1

公开(公告)日：2024-09-19

申请号：US18672484

申请日：2024-05-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KOICHIRO ASAZAWA ,  HIDEAKI MURASE ,  KOICHI SAWADA ,  TAKAO HAYASHI

IPC: C25B15/021 ,  C25B1/04 ,  C25B9/19 ,  C25B9/67 ,  C25B11/046 ,  C25B15/025 ,  C25B15/08

CPC classification number: C25B15/021 ,  C25B1/04 ,  C25B9/19 ,  C25B9/67 ,  C25B11/046 ,  C25B15/025 ,  C25B15/087

Abstract: A method for operating a water electrolyzer includes applying a voltage to a water electrolysis cell such that a current having a target current value flows through the water electrolysis cell and stopping the current that flows through the water electrolysis cell upon a voltage applied to the water electrolysis cell being increased to a predetermined threshold value or more when a water electrolysis reaction is performed.

公开(公告)号：US20230235467A1

公开(公告)日：2023-07-27

申请号：US18183223

申请日：2023-03-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIROSHI SHIRATAKI ,  HIDEAKI MURASE ,  TAKAO HAYASHI ,  MICHIO SUZUKA

IPC: C25B11/073 ,  C25B1/04 ,  C25B11/057 ,  C25B9/19 ,  C25B13/04 ,  C25B9/65

CPC classification number: C25B11/073 ,  C25B1/04 ,  C25B9/19 ,  C25B9/65 ,  C25B11/057 ,  C25B13/04

Abstract: The electrode catalyst ink for a water electrolysis cell includes a catalyst including a layered double hydroxide, an organic polymer, and a solvent. The Hansen solubility parameter distance Ra1 between the solvent and the catalyst is 15.0 MPa½ or more and less than 20.5 MPa½. The Hansen solubility parameter distance Ra2 between the solvent and the organic polymer is 10.0 MPa½ or more and 14.0 MPa½ or less.

公开(公告)号：US20230227989A1

公开(公告)日：2023-07-20

申请号：US18183044

申请日：2023-03-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIROSHI SHIRATAKI ,  HIDEAKI MURASE ,  TAKAO HAYASHI ,  MICHIO SUZUKA

IPC: C25B11/075 ,  B01J23/755 ,  C09D11/52 ,  C25B1/04 ,  C25B9/19

CPC classification number: C25B11/075 ,  B01J23/755 ,  C09D11/52 ,  C25B1/04 ,  C25B9/19

Abstract: The electrode catalyst ink includes a catalyst including a layered double hydroxide, an organic polymer, and a solvent. The solvent includes a first solvent, a second solvent, and a third solvent. The third solvent has a boiling point higher than a boiling point of the first solvent and higher than a boiling point of the second solvent. The Hansen solubility parameter distance Ra1 [MPa1/2] between the third solvent and the catalyst and the Hansen solubility parameter distance Ra2 [MPa1/2] between the third solvent and the organic polymer satisfy a relationship of 2.08Ra1−16.0≤Ra2≤2.08Ra1−13.5.

公开(公告)号：US20230160082A1

公开(公告)日：2023-05-25

申请号：US18150685

申请日：2023-01-05

Applicant: Panasonic Intellectual Property Management Co., Ltd

Inventor： HIROSHI SHIRATAKI ,  TAKAO HAYASHI ,  HIDEAKI MURASE ,  MICHIO SUZUKA

IPC: C25B11/095 ,  C25B1/04 ,  C25B9/23 ,  C25B9/19

CPC classification number: C25B11/095 ,  C25B1/04 ,  C25B9/23 ,  C25B9/19

Abstract: An electrode catalyst for a water electrolysis cell includes a catalyst and a polymer of intrinsic microporosity, and the polymer of intrinsic microporosity is neutral.

公开(公告)号：US20230121007A1

公开(公告)日：2023-04-20

申请号：US18067775

申请日：2022-12-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIROYUKI KOSHIKAWA ,  HIDEAKI MURASE ,  TAKAO HAYASHI ,  MICHIO SUZUKA ,  SEIGO SHIRAISHI

IPC: C25B11/053 ,  C25B1/04 ,  C25B11/075

Abstract: A catalyst includes a layered double hydroxide and a metal particle. The layered double hydroxide includes ions of at least two transition metals. The metal particle includes at least one transition metal. The metal particle has a surface coated with the layered double hydroxide.