Method of making an electrically conductive element for use...

Details Method of making an electrically conductive element for use... Method of making an electrically conductive element for use...

2003-08-11

2008-07-08

Talbot, Brian K (Department: 1792)

Coating processes

Electrical product produced

Fuel cell part

C427S299000, C427S307000, C427S322000

Reexamination Certificate

active

07396559

ABSTRACT:
The present invention provides an electrically conductive element for a proton exchange membrane fuel cell having low electrical contact resistance and high corrosion resistance. The conductive element comprises a corrosion susceptible metal substrate with a surface, which is preferably treated to activate the surface (i.e., to remove a passivation layer of oxides from the surface) with an acidic treatment solution. The treated surface is then overlaid with an electrically conductive, corrosion-resistant, protective coating to protect the substrate re-forming a passivation layer while exposed to the corrosive environment of the fuel cell. The present invention also provides methods of preparing an electrically conductive element to have low electrical contact resistance and high corrosion resistance.

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