Fuel cell with reduced gas leakage
US6610435B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2000 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Apr 16, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fuel cell which provides less gas leakage, no deformation of the electrodes, and low producing cost is formed of a plurality of electrode units, each having an oxidant electrode, a fuel electrode, and a solid polymer electrolyte membrane sandwiched by the oxidant and fuel electrodes. The solid polymer electrolyte membrane has a larger area than the oxidant and fluid electrodes, and has an electrode contacting portion and an outer peripheral portion projecting from the electrode contacting portion. A gasket covers the outer peripheral portion of the solid polymer electrolyte membrane. A plurality of separators separates the electrode units, the electrode units and separators being stacked to form a fuel cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.