Corrosion resistant PEM fuel cell

Details Corrosion resistant PEM fuel cell Corrosion resistant PEM fuel cell

2005-05-03

2005-05-03

Le, Hoa Van (Department: 1752)

Chemistry: electrical current producing apparatus, product, and

Having earth feature

C429S047000, C429S047000

Reexamination Certificate

active

06887613

ABSTRACT:
The present invention relates to an electrochemical cell having a catalytic electrode and an electrically conductive contact element facing the electrode. The electrically conductive contact element conducts electrical current from the electrode and has a surface comprising a plurality of passivated regions, and a plurality of non-passivated regions dispersed among the passivated regions. The surface further is coated with an electrically conductive, corrosion resistant coating. Other preferred aspects of the present invention include methods of treating the electrically conductive contact element by passivation to resist corrosion while still maintaining electrical conductivity.

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Michael C. Kimble, Alan S. Woodman, and Everett B. Anderson, Physical Sciences, Inc., Andover, MA, Characterization of Corrosion-Protective Methods for Electrically Conductive Coatings on Aluminum, American Electroplaters and Surface Finishers Society, AESF SUR/FIN '99 Proceedings, 6/21-24, 1999, pp. 1-12.

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