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)MnO3 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)MnO3 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)MnO3, while significantly decreasing the experimentally observed overpotential.
