Hybrid interconnect for a solid-oxide fuel cell stack

Details Hybrid interconnect for a solid-oxide fuel cell stack Hybrid interconnect for a solid-oxide fuel cell stack

2005-03-23

2009-10-13

Alejandro, Raymond (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C429S006000

Reexamination Certificate

active

07601450

ABSTRACT:
An electrical interconnect for a fuel cell assembly comprising a peripheral frame formed of one or more materials having a coefficient of thermal expansion similar to that of adjacent elements to which the interconnect must be bonded and a central portion formed of a corrosion-resistant material for conducting electric current between adjacent fuel cells. Preferably, the central portion is attached to the peripheral frame via a brazed corrugated lap joint for relieving thermal expansion differences between the frame and the central portion. Preferably, the joint includes an interlayer of a ductile material, for example, a nickel, copper, silver or gold layer, which helps to relieve thermal stress between the frame and the central portion.

REFERENCES:
patent: 3489614 (1970-01-01), Tomter
patent: 3530003 (1970-09-01), Verger et al.
patent: 6207310 (2001-03-01), Wilson et al.
patent: 2003/0091887 (2003-05-01), Ihonen et al.
patent: 2004/0101742 (2004-05-01), Simpkins et al.
patent: 2004/0247978 (2004-12-01), Shimamune

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