公开(公告)号：EP4170759A1

公开(公告)日：2023-04-26

申请号：EP21828794.4

申请日：2021-06-23

申请人： HIROSAKI UNIVERSITY ,  TOPPAN INC.

发明人： CHISAKA, Mitsuharu ,  SUZUKI, Yutaka ,  MORIOKA, Hiroyuki ,  OZAWA, Madoka

IPC分类号： H01M4/86 ,  H01M4/88 ,  H01M4/90 ,  H01M8/10

摘要： The present invention provides a fibrous rutile-type oxide that contains an oxygen atom, a nitrogen atom, and a transition metal atom. The transition metal atom is at least one atom selected from the group consisting of a titanium atom, a tantalum atom, a niobium atom, and a zirconium atom. The rutile-type oxide is represented by the chemical formula MO x N y , where M represents the transition metal atom. In the chemical formula, x satisfies x = 2 - (y + j) (j ≥ 0).

公开(公告)号：EP4297133A1

公开(公告)日：2023-12-27

申请号：EP22756305.3

申请日：2022-02-18

申请人： TOPPAN INC.

发明人： SUZUKI, Yutaka ,  MORIOKA, Hiroyuki ,  OZAWA, Madoka

IPC分类号： H01M4/86 ,  H01M4/90 ,  H01M4/92 ,  H01M8/10 ,  H01M8/1004 ,  B01J23/42 ,  B01J27/24

摘要： An electrode catalyst layer has a first surface configured to be in contact with a polymer electrolyte membrane in a membrane electrode assembly, and a second surface facing away from the first surface. The electrode catalyst layer includes a first portion having a layer shape including the first surface, and a second portion having a layer shape including the second surface, the second portion being laminated on the first portion. The electrode catalyst layer contains a first catalyst containing platinum and a second catalyst containing transition metal oxide. The first catalyst has catalytic activity higher than that of the second catalyst. A density of the first catalyst in the electrode catalyst layer is highest in a region including the first surface in the first portion. A maximum value of the density of the first catalyst in the second portion is smaller than a minimum value of the density of the first catalyst in the first portion.