Solid oxide fuel cell
US8945789B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2012 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Jul 22, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a solid oxide fuel cell (SOFC) including a porous fuel electrode which allows reaction of a fuel gas to proceed and which is formed of Ni and YSZ, a porous air electrode which allows reaction of an oxygen-containing gas to proceed, and a dense solid electrolyte membrane which is provided between the fuel electrode and the air electrode and which has an interface with the fuel electrode. In the fuel electrode, Ni grains present in a region located within 3 μm from the interface (i.e., a “near-interface region”) have a mean size of 0.28 to 0.80 μm, YSZ grains present in the near-interface region have a mean size of 0.28 to 0.80 μm, and pores present in the near-interface region have a mean size of 0.10 to 0.87 μm. Thus, the fuel electrode of the SOFC exhibits low reaction resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.