公开(公告)号：US20240044028A1

公开(公告)日：2024-02-08

申请号：US18487062

申请日：2023-10-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIROSHI SHIRATAKI ,  TAKAO HAYASHI ,  HIDEAKI MURASE ,  KOICHIRO ASAZAWA

IPC: C25B15/027 ,  C25B1/04 ,  C25B15/021 ,  C25B9/67 ,  C25B11/075 ,  C25B11/054 ,  C25B11/037 ,  C25B11/032 ,  C25B11/061

CPC classification number: C25B15/027 ,  C25B1/04 ,  C25B15/021 ,  C25B9/67 ,  C25B11/075 ,  C25B11/054 ,  C25B11/037 ,  C25B11/032 ,  C25B11/061

Abstract: A water electrolyzer includes an electrochemical cell including an anode and a cathode, an electrolyte solution, a voltage applicator, and a controller. The voltage applicator applies a voltage between the anode and the cathode. The electrochemical cell includes nickel. In the shutdown of the water electrolyzer, the controller causes the voltage applicator to apply the voltage at least when the temperature of the electrolyte solution is equal to or more than a predetermined threshold value.

公开(公告)号：US20240052505A1

公开(公告)日：2024-02-15

申请号：US18491746

申请日：2023-10-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KOICHIRO ASAZAWA ,  HIROSHI SHIRATAKI ,  HIDEAKI MURASE ,  TAKAO HAYASHI ,  KOICHI KOGA

IPC: C25B11/061 ,  C25B1/04 ,  C25B9/23 ,  C25B11/032 ,  C25B11/052 ,  C25B11/075

CPC classification number: C25B11/061 ,  C25B1/04 ,  C25B9/23 ,  C25B11/032 ,  C25B11/052 ,  C25B11/075

Abstract: A water electrolysis cell includes an anode, a cathode, and an anion-exchange membrane disposed between the anode and the cathode. The anode includes a catalyst layer disposed on the anion-exchange membrane and an anode gas diffusion layer disposed on the catalyst layer. The anode gas diffusion layer includes metal fiber. In the metal fiber, a section constituting a surface of the metal fiber is composed of nickel.

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.