Patent ID: 6821498
Filing Date: 2004-11-23
Classification: B01J,C01G,C01P,H01M,Y02E

Abstract:
A process for producing a perovskite material having increased oxygen ion conductivity, comprising seeding the framework of a lanthanum manganese oxide perovskite material with oxide ion vacancies by doping a Mn site of the lanthanum manganese oxide perovskite material with a Bâ€² dopant having a coordination geometry less than a coordination geometry of the Mn site, wherein the lanthanum manganese oxide perovskite material has a formula La1âˆ’xAâ€²xMn1âˆ’yBâ€²yO3âˆ’&dgr;, wherein:x is between 0 and 1; y is between 0.01 and 0.20; Aâ€² is selected from the group consisting of Ca and Sr; and Bâ€² is selected from the group consisting of Al, Ga, Zn, Cu, and Ni.