Monolithic fuel cell having a multilayer interconnect
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United States of America Patent
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Aug 30, 1994
Grant Date -
N/A
app pub date -
Jun 4, 1993
filing date -
Jun 4, 1993
priority date (Note) -
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Abstract
A fuel cell comprises an anode, a cathode, a solid electrolyte disposed between the anode and the cathode, and interconnect means for providing an electrical connection located adjacent to either the cathode or the anode but not adjacent to the solid electrolyte. The interconnect means includes an interconnect layer having a composition of a mixture of an electrical conductor and a ceramic matrix material that is sinterable in an oxidizing atmosphere at a temperature of less than about 1500.degree. C. The interconnect means includes, a first buffer layer having a region with a composition that is intermediate between that of the anode and that of the interconnect layer, a second buffer layer having a region with a composition that is intermediate between that of the cathode and that of the interconnect layer, and the interconnect layer disposed between the first buffer layer and the second buffer layer.
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