Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Fuel cell with solid electrolyte
Reexamination Certificate
2009-05-01
2010-12-21
Yuan, Dah-Wei D (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Fuel cell with solid electrolyte
C429S482000, C429S507000, C429S508000, C429S509000
Reexamination Certificate
active
07855030
ABSTRACT:
During manufacture of an SOFC assembly, an inhibitor is included to prevent migration of silver braze during subsequent use of the SOFC assembly. The inhibitor may take any of several forms, either individually or in combination. Inhibitors comprehended by the present invention include, but are not limited to: a) a mechanical barrier that can be printed or dispensed onto one or more SOFC stack elements around the braze areas to prevent mechanically-driven migration; b) an electrically insulating feature in the electrolyte or interlayer over the electrolyte layer in the seal margins to prevent electrical potential-driven migration; and 3) chemical modification of the braze itself as by addition of an alloying metal such as palladium.
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Zhenguo Yang et al: “Chemical Compatibility of Barium-Calcium-Aluminosilicate-Based Sealing Glasses with the Ferritic Stainless Steel Interconnect in SOFCs”; Journal of the Electrochemical Society, vol. 150, No. 8, Jun. 23, 2003, pp. A1095-A1101, XP002597307.
DeRose Anthony J.
Fleming Carolyn D.
Haltiner, Jr. Karl J.
Keller Joseph
Kerr Rick D.
Davis Patricia
Delphi Technologies Inc.
Twomey Thomas N.
Yuan Dah-Wei D
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