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Barium oxide, calcium oxide, magnesia, and alkali oxide free glass

United States Patent

September 24, 2013
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
A glass composition consisting essentially of about 10-45 mole percent of SrO; about 35-75 mole percent SiO.sub.2; one or more compounds from the group of compounds consisting of La.sub.2O.sub.3, Al.sub.2O.sub.3, B.sub.2O.sub.3, and Ni; the La.sub.2O.sub.3 less than about 20 mole percent; the Al.sub.2O.sub.3 less than about 25 mole percent; the B.sub.2O.sub.3 less than about 15 mole percent; and the Ni less than about 5 mole percent. Preferably, the glass is substantially free of barium oxide, calcium oxide, magnesia, and alkali oxide. Preferably, the glass is used as a seal in a solid oxide fuel/electrolyzer cell (SOFC) stack. The SOFC stack comprises a plurality of SOFCs connected by one or more interconnect and manifold materials and sealed by the glass. Preferably, each SOFC comprises an anode, a cathode, and a solid electrolyte.
Lu; Peizhen Kathy (Blacksburg, VA), Mahapatra; Manoj Kumar (Willington, CT)
U.S. Department of Energy (Washington, DC)
13/ 278,438
October 21, 2011
GOVERNMENT INTERESTS The United States Government has rights in this invention pursuant to Contract No. DE-FC07-061D14739, between the U.S. Department of Energy (DOE) and Virginia Polytechnic Institute and State University.