Oxygen ion conducting materials

Details Oxygen ion conducting materials Oxygen ion conducting materials

2005-07-12

2005-07-12

Barr, Michael (Department: 1746)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C423S263000, C502S303000, C429S218100

Reexamination Certificate

active

06916570

ABSTRACT:
An oxygen ion conducting ceramic oxide that has applications in industry including fuel cells, oxygen pumps, oxygen sensors, and separation membranes. The material is based on the idea that substituting a dopant into the host perovskite lattice of (La,Sr)MnO3that prefers a coordination number lower than 6 will induce oxygen ion vacancies to form in the lattice. Because the oxygen ion conductivity of (La,Sr)MnO3is low over a very large temperature range, the material exhibits a high overpotential when used. The inclusion of oxygen vacancies into the lattice by doping the material has been found to maintain the desirable properties of (La,Sr)MnO3, while significantly decreasing the experimentally observed overpotential.

REFERENCES:
patent: 3884837 (1975-05-01), Remeika et al.
patent: 3901828 (1975-08-01), Mai et al.
patent: 4001371 (1977-01-01), Remeika et al.
patent: 4221827 (1980-09-01), Parry et al.
patent: 4601883 (1986-07-01), Sekido et al.
patent: 4892862 (1990-01-01), Ogushi et al.
patent: 4921829 (1990-05-01), Ozawa et al.
patent: 4957718 (1990-09-01), Yoo et al.
patent: 5183799 (1993-02-01), Ogushi et al.
patent: 5306411 (1994-04-01), Mazanec et al.
patent: 5432024 (1995-07-01), Soma et al.
patent: 5443807 (1995-08-01), Tang et al.
patent: 5559073 (1996-09-01), Hu et al.
patent: 5565181 (1996-10-01), Dieckmann et al.
patent: 5589285 (1996-12-01), Cable et al.
patent: 5759936 (1998-06-01), Christiansen et al.
patent: 5766317 (1998-06-01), Cable et al.
patent: 5820654 (1998-10-01), Gottzman et al.
patent: 5882616 (1999-03-01), Ziebarth et al.
patent: 5888272 (1999-03-01), Prasad et al.
patent: 5910238 (1999-06-01), Cable et al.
patent: 5911860 (1999-06-01), Chen et al.
patent: 5981445 (1999-11-01), Kirchnerova et al.
patent: 6197719 (2001-03-01), Choudhary et al.
patent: 6284210 (2001-09-01), Euzen et al.
patent: 6352955 (2002-03-01), Golden
patent: 6521202 (2003-02-01), Vaughey et al.
patent: 6586127 (2003-07-01), Ishihara et al.
patent: 6821498 (2004-11-01), Vaughey et al.
Kuo, J. H. et al., “Oxidation—Reduction Behavior of Undoped and Sr-Doped LaMnO3Nonstoichiometry and Defect Structure,”J. Solid State Chem.,vol. 83, pp. 52-60, 1989; published by Academic Press, Inc.

Affiliated with

Also associated with

Rating

Oxygen ion conducting materials does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Oxygen ion conducting materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oxygen ion conducting materials will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3420614