Title:
ELECTRODE CATALYST LAYER, MEMBRANE ELECTRODE ASSEMBLY, AND SOLID POLYMER-TYPE FUEL CELL
Document Type and Number:
WIPO Patent Application WO/2022/176988
Kind Code:
A1
Abstract:
This electrode catalyst layer includes a first surface configured to be bonded to a solid polymer electrolyte membrane in the membrane electrode assembly, and a second surface on the opposite side from the first surface. The electrode catalyst layer is composed of a first portion in the form of a layer including the first surface, and a second portion in the form of a layer including the second surface and being laminated on the first portion. The electrode catalyst layer includes a first catalyst including platinum, and a second catalyst formed of a transition metal oxide. The catalytic activity of the first catalyst is higher than that of the second catalyst. The density of the first catalyst in the electrode catalyst layer is highest at the region including the first surface in the first portion. The maximum value of density of the first catalyst in the second portion is smaller than the minimum value of density of the first catalyst in the first portion.
Inventors:
SUZUKI YUTAKA (JP)
MORIOKA HIROYUKI (JP)
OZAWA MADOKA (JP)
MORIOKA HIROYUKI (JP)
OZAWA MADOKA (JP)
Application Number:
PCT/JP2022/006743
Publication Date:
August 25, 2022
Filing Date:
February 18, 2022
Export Citation:
Assignee:
TOPPAN INC (JP)
International Classes:
H01M4/86; B01J23/42; B01J27/24; H01M4/90; H01M4/92; H01M8/10; H01M8/1004
Domestic Patent References:
| WO2021025157A1 | 2021-02-11 | |||
| WO2020179583A1 | 2020-09-10 |
Foreign References:
| JP2008123728A | 2008-05-29 | |||
| JP2005353408A | 2005-12-22 | |||
| JP2007311354A | 2007-11-29 |
Attorney, Agent or Firm:
ONDA Makoto et al. (JP)
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