Solid electrolyte type fuel cells
US4950562A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1989 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Apr 19, 2009 |
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 electrolyte type of fuel cell of a planar type structure comprising a plurality of solid electrolyte plates, each being in the form of a flat plate and having a porous cathodic layer on one side and a porous anodic layer on the other side, which are laminated together through an interconnector plate provided in both its sides with grooves defining gas passages, wherein oxidizing agent and fuel gases are fed through said passages to the cathodic and anodic sides, thereby reducing the length of a current path running through regions of high resistance, increasing the degree of integration and improving reliability. By using heat-resistant parts for the interconnectors, cathodes and anodes, it is also possible to improve the resistance to oxidation and reduction as well as durability and obtain low resistance. it is further possible to obtain a fuel cell having satisfactory properties and capable of standing up to use over an extended period of time by using solid electrolyte for fuel cells which is obtained by sintering Y.sub.2 O.sub.3 -containing partially stabilized zirconia added with 5 to 20 % of alumina, has low resistance and high mechanic…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.