Patent · US Expired

Ceramic gas supply components for fuel cells comprising zirconium oxide solid electrolyte

US5587251A · kind A · utility

6Cited by

3References

17Claims

0Family size

Assignee

Dornier GmbH · DE

Inventors

Richard Spaeh · Helmstedt, DE
Wolfgang Schaefer
Detlef Stolten · Aachen, DE
Marco Fandel · Obergünzburg, DE

Key dates

Filing date	Dec 17, 1993
Grant date	Dec 24, 1996
Priority date	—
Expiry date	Dec 17, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Electrically insulating ceramic gas supply plenums for solid electrolyte fuel cells in which the plenums are formed from a mixture of ceramic components and the proportions of the components in the mixture are adjusted to match the coefficient of thermal expansion of the plenum to that of the solid electrolyte. A preferred ceramic is formed from a mixture of MgO and Al.sub.2 O.sub.3 having a MgO/Al.sub.2 O.sub.3 molar ratio of from 1:1 and 7:1.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.