Cathode catalyst layer for fuel cell and fuel cell
US12068487B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2020 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | May 9, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cathode catalyst layer has two layers: a first catalyst layer on a gas diffusion layer side, and a second catalyst layer on an electrolyte membrane side. The first catalyst layer includes a first particulate conductive member, first catalyst particles, and a first fibrous conductive member, at least part of the first catalyst particles being supported on the first particulate conductive member. The second catalyst layer includes a second particulate conductive member and second catalyst particles, at least part of the second catalyst particles being supported on the second particulate conductive member. A catalyst support density D2 of the second catalyst particles on the second particulate conductive member is greater than a catalyst support density D1 of the first catalyst particles on the first particulate conductive member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.