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Title: Oxygen ion conducting materials

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)MnO.sub.3 that 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)MnO.sub.3 is 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)MnO.sub.3, while significantly decreasing the experimentally observed overpotential.

Inventors:
 [1];  [2];  [3];  [4]
  1. (Elmhurst, IL)
  2. (Naperville, IL)
  3. (Downers Grove, IL)
  4. (Bolingbrook, IL)
Issue Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
875056
Patent Number(s):
6521202
Assignee:
University of Chicago (Chicago, IL) ANL
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
oxygen; conducting; materials; ceramic; oxide; applications; industry; including; fuel; cells; pumps; sensors; separation; membranes; material; based; idea; substituting; dopant; host; perovskite; lattice; lasrmnosub3; prefers; coordination; induce; vacancies; form; conductivity; temperature; range; exhibits; overpotential; inclusion; doping; found; maintain; desirable; properties; significantly; decreasing; experimentally; observed; fuel cell; temperature range; conducting material; separation membrane; oxygen sensor; /423/429/502/

Citation Formats

Vaughey, John, Krumpelt, Michael, Wang, Xiaoping, and Carter, J. David. Oxygen ion conducting materials. United States: N. p., 2003. Web.
Vaughey, John, Krumpelt, Michael, Wang, Xiaoping, & Carter, J. David. Oxygen ion conducting materials. United States.
Vaughey, John, Krumpelt, Michael, Wang, Xiaoping, and Carter, J. David. Wed . "Oxygen ion conducting materials". United States. https://www.osti.gov/servlets/purl/875056.
@article{osti_875056,
title = {Oxygen ion conducting materials},
author = {Vaughey, John and Krumpelt, Michael and Wang, Xiaoping and Carter, J. David},
abstractNote = {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)MnO.sub.3 that 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)MnO.sub.3 is 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)MnO.sub.3, while significantly decreasing the experimentally observed overpotential.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {1}
}

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