Bipolar plate for fuel cell and method for production thereof
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United States of America Patent
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Issued Date -
Dec 9, 2004
app pub date -
Mar 18, 2004
filing date -
Sep 18, 2001
priority date (Note) -
Abandoned
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Abstract
In a bipolar plate for a fuel cell including a metal substrate and a metallic coating formed on at least part of a surface of the metal substrate, the durability or the resilience is elevated by suitably selecting a material or a shape of the metal substrate and/or the metallic coating. The material of the metal substrate includes one or more of metals or metal alloys selected from a group consisting of iron, nickel, alloys thereof and stainless steel; and the metallic coating includes a combination of conductive platinum-group metal oxides. The metal substrate may be a thermally oxidized substrate, and the metallic coating may be a conductive oxide. Further, the metallic coating may be a metallic porous element or a metallic porous element having a passivity prevention layer on the surface thereof.
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