Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Electrical current collector
Reexamination Certificate
2011-08-23
2011-08-23
Alejandro, Raymond (Department: 1727)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Electrical current collector
C429S520000, C429S521000, C429S522000, C427S115000
Reexamination Certificate
active
08003279
ABSTRACT:
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.
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Alejandro Raymond
GM Global Technology Operations LLC
Harness & Dickey & Pierce P.L.C.
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