Bipolar plate with enhanced stability
AssigneeGM Global Technology Operations LLC
InventorsMahmoud Elhamid, Gayatri Vyas, Youssef Mikhail, Richard Blunk, Daniel Lisi
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Abstract
An enhanced stability and inexpensive bipolar plate for a fuel cell is disclosed. The enhanced stability bipolar plate includes a bipolar plate substrate and a corrosion-resistant coating thermally sprayed on the bipolar plate substrate. A method for enhancing corrosion resistance of a bipolar plate is also disclosed.
Claims36
An enhanced stability bipolar plate for a fuel cell, comprising:
- a bipolar plate substrate;
- and
- a corrosion-resistant coating thermally sprayed on said bipolar plate substrate.
An enhanced stability bipolar plate for a fuel cell, comprising:
- a stainless steel bipolar plate substrate;
- a corrosion-resistant coating thermally sprayed on said bipolar plate substrate, said corrosion-resistant coating having a corrosion resistance higher than a corrosion resistance of said bipolar plate substrate;
- and
- a cover layer provided on said corrosion-resistant coating for minimizing contact resistance of said corrosion-resistant coating.
A method for enhancing corrosion resistance of a bipolar plate, comprising:
- providing a bipolar plate substrate;
- and
- thermally spraying a corrosion-resistant coating on said bipolar plate substrate.
The method of claim 17 further comprising providing a cover layer on said corrosion-resistant layer for minimizing contact resistance of said corrosion-resistant layer.
A method for enhancing corrosion resistance of a bipolar plate, comprising:
- forming a coating film by thermal spraying;
- providing a bipolar plate substrate;
- and
- providing a corrosion-resistant coating on said bipolar plate substrate by stamping said coating film on said bipolar plate substrate.
A method for enhancing fluoride-corrosion resistance of a cathode side of a bipolar plate in a fuel cell, comprising:
- providing a bipolar plate substrate having a cathode side;
- and
- thermally spraying a corrosion-resistant coating on said cathode side of said bipolar plate substrate.
Dependencies are inferred from the claim text.