公开(公告)号：US20240162452A1

公开(公告)日：2024-05-16

申请号：US18548359

申请日：2022-03-14

Applicant: OSAKA UNIVERSITY

Inventor： Yu Katayama ,  Ryutaro Ono ,  Asuka Morinaga ,  Tomoya Higo ,  Shunsaku Uchiyama

IPC: H01M4/90 ,  C25B1/21

CPC classification number: H01M4/9016 ,  C25B1/21

Abstract: It is an object of the present invention to provide a catalyst having high catalytic activity for oxygen reduction reaction, hydrogen evolution reaction, and the like, particularly a catalyst employing platinum group particles having a small particle diameter. A layered manganese oxide comprising platinum group metal particles between layers. A method for producing a layered manganese oxide comprising platinum group metal particles between layers, or platinum group metal particles, the method comprising introducing a platinum group complex between layers of a layered manganese oxide and reducing the introduced platinum group complex by electrolysis, wherein a potential applied to the platinum group complex is changed in a positive direction and a negative direction.