The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 2007
Filed:
Nov. 18, 2003
James M. Ralph, Downers Grove, IL (US);
Cècile C.r. Rossignol, Lyons, FR;
John T. Vaughey, Elmhurst, IL (US);
James M. Ralph, Downers Grove, IL (US);
Cècile C.R. Rossignol, Lyons, FR;
John T. Vaughey, Elmhurst, IL (US);
UChicago Argonne, LLC, Chicago, IL (US);
Abstract
An A and/or A' site deficient perovskite of general formula of (AA′)FeOor of general formula AA′FeO, wherein A is La alone or with one or more of the rare earth metals or a rare earth metal other than Ce alone or a combination of rare earth metals and X is in the range of from 0 to about 1; A′ is Sr or Ca or mixtures thereof and Y is in the range of from about 0.01 to about 0.3; δ represents the amount of compensating oxygen loss. If either A or A′ is zero the remaining A or A′ is deficient. A fuel cell incorporating the inventive perovskite as a cathode is disclosed as well as an oxygen separation membrane. The inventive perovskite is preferably single phase.