Metal-coated articles comprising a transition metal region and a platinum-group metal region and related methods
AssigneeBattelle Energy Alliance, LLC
InventorPrabhat K. Tripathy
Life of this patent
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Abstract
A metal-coated article that comprises a substrate, a transition metal region adjacent to the substrate, and a platinum-group metal region adjacent to the transition metal region. The transition metal region comprises a transition metal carbide layer adjacent to the substrate. The platinum-group metal region comprises a transition metal/platinum-group metal layer that is adjacent to the transition metal region and a platinum-group metal layer adjacent to the transition metal/platinum-group metal layer. Related methods are also disclosed.
Claims20
A method of forming a metal-coated article, comprising:
- electrodepositing a transition metal layer onto a substrate;
- and converting at least a portion of the transition metal layer to a transition metal carbide layer to form a transition metal region;
- and
- electrodepositing a platinum-group metal layer on the transition metal region;
- and converting at least a portion of the platinum-group metal layer to a transition metal/platinum-group metal layer on the platinum-group metal layer to form a platinum-group metal region.
A method of forming a metal-coated article, comprising:
- forming an as deposited transition metal layer on a substrate;
- annealing the as deposited transition metal layer to convert at least a portion of the as deposited transition metal layer to a transition metal carbide layer;
- forming an as deposited platinum-group metal layer on the transition metal carbide layer;
- and
- annealing the as deposited platinum-group metal layer to convert at least a portion of the as deposited platinum-group metal layer to a transition metal/platinum-group metal layer.
A method of forming a metal-coated article, comprising:
- electrodepositing one or more transition metal layers onto a substrate layer from an electrolyte comprising an alkali metal halide;
- and converting at least a portion of the one or more transition metal layers to a transition metal carbide layer to form a transition metal region;
- and
- electrodepositing one or more platinum-group metal layers on the transition metal region;
- and converting at least a portion of the one or more platinum-group metal layers to a transition metal/platinum-group metal layer on the platinum-group metal layer to form a platinum-group metal region.
Dependencies are inferred from the claim text.