Fuel cell

Details Fuel cell Fuel cell

2011-07-19

2011-07-19

Conley, Helen O (Department: 1726)

Chemistry: electrical current producing apparatus, product, and

Fuel cell, subcombination thereof, or method of making or...

Electrical current collector

C429S518000

Reexamination Certificate

active

07981570

ABSTRACT:
The present invention provides a fuel cell having a layered structure, including: a membrane electrode assembly having a fuel electrode, an oxidation electrode, and an electrolyte membrane held between the fuel electrode and the oxidation electrode; and stainless steel separators holding the membrane electrode assembly therebetween. The stainless steel separator contains Cr and Fe; the Cr concentration by mass % by mass ratio of Cr to Fe at the separator surface facing the fuel electrode is from 0.7 to 1.3; and the Cr concentration by mass % by mass ratio of Cr to Fe at the separator surface facing the oxidation electrode is less than 0.7.

REFERENCES:
patent: 5643690 (1997-07-01), Tateishi et al.
patent: 07230818 (1995-08-01), None
patent: 08180883 (1996-07-01), None
patent: 2001297784 (2001-10-01), None
patent: 2002270196 (2002-09-01), None
patent: 2003123783 (2003-04-01), None

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