Solid oxide fuel cell generator including a glass sealant
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United States of America Patent
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Jan 17, 2012
Grant Date -
Mar 26, 2009
app pub date -
Oct 24, 2007
filing date -
Sep 21, 2007
priority date (Note) -
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Abstract
A solid oxide fuel cell generator is provided for electrochemically reacting a fuel gas with a flowing oxidant gas at an elevated temperature to produce power. The generator includes a generator section receiving a fuel gas and a plurality of elongated fuel cells extending through the generator section and having opposing open fuel cell ends for directing an oxidant gas between opposing plena in the generator. A sealant defines a seal on the fuel cells adjacent at least one of the fuel cell ends. The sealant is a modified lanthanum borate aluminosilicate glass composition having a minimal amount of boron oxide and silica, and in which the sealant maintains substantially constant physical characteristics throughout multiple thermal cycles.
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