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Fast Ion Conducting Composite Electrolyte for Solid State Electrochemical Devices

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
Composite electrolyte materials include composites comprising 8YSZ in a range of 50-95%, balance 3YSZ. Either the 8YSZ or the 3YSZ can be substituted with a composition having the general formula A.sub.1-x-yB.sub.xC.sub.y where: A=Zr.sub.0.84Y.sub.0.16O.sub.2; B=at least one of the following: Zr.sub.1-xD.sub.xO.sub.2 where: D=at least one of the group Mg, Ca, Sc, and Y, and x=0.03 to 0.16; and Ce.sub.1-xRE.sub.xO.sub.2 where: RE=at least one rare-earth element and x=0.05 to 0.20; C=Al.sub.2O.sub.3 where y=0 to 0.20. The composite electrolyte materials are useful in solid state electrochemical devices such as solid oxide fuel cells and electrolyzers.
Armstrong, Timothy R. (Clinton, TN), Armstrong, Beth L. (Clinton, TN), Henry, JR., John J. (Knoxville, TN)
12/ 695,181
January 28, 2010
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH [0003] The United States Government has rights in this invention pursuant to contract no. DE-AC05-00OR22725 between the United States Department of Energy and UT-Battelle, LLC. NAMES OF PARTIES TO A JOINT RESEARCH AGREEMENT [0004] This invention arose under Cooperative Research and Development Agreement No. ORNL-0720.0 between UT-Battelle, LLC and Worldwide Energy, Inc.