Fuel battery
US11515542B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2021 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | Jun 3, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fuel battery includes a membrane-electrode assembly including a first catalyst layer and a first gas diffusion layer stacked on a first surface of a polymer electrolyte membrane, and a second catalyst layer and a second gas diffusion layer stacked on a second surface of the polymer electrolyte membrane. The membrane-electrode assembly is interposed between a first separator and a second separator. The first separator includes a rib and a groove on a surface that is in contact with the first gas diffusion layer, the rib and the groove defining a gas flow path through which a reaction gas is to flow. A thickness of the first gas diffusion layer is defined as h, and a width of a portion of the rib that is in contact with the first gas diffusion layer is defined as Rw such that 0.29 Rw≤h≤0.55 Rw is satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.