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SEGREGATION RESISTANT PEROVSKITE OXIDES WITH SURFACE MODIFICATION

United States Patent Application

20180093229
A1
View the Complete Application at the US Patent & Trademark Office
A method and a composition to stabilize the surface cation chemistry of the perovskite or related oxides, and thus, to minimize or completely avoid the detrimental segregation and phase separation of dopant cations at the surface can include modifying the surface with more oxidizable metal cations and/or more oxidizable metal oxides, thereby reducing the oxygen vacancy concentration at the very surface.
Yildiz, Bilge (Cambridge, MA), Tsvetkov, Nikolai (Cambridge, MA), Lu, Qiyang (Cambridge, MA)
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (CAMBRIDGE MA)
15/ 563,535
March 30, 2016
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] This invention was made with Government support under Grant Nos. DMR1419807 and DMR1055583 awarded by the National Science Foundation and under Grant No. DE-SC0002633 awarded by the Department of Energy. The Government has certain rights in the invention.