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In this paper, we introduce a novel idea of using metallic amorphous material as a bipolar plate for polymer electrolyte membrane fuel cell (PEMFC). The major requirement of the metallic bipolar plate material is their high corrosion resistance. Owing to its chemical homogeneity, and absence of defects (like grain boundaries, dislocations, etc.), amorphous materials exhibit a combination of attractive properties for bipolar plates such as high corrosion resistance and high strength (w about 2 GPa). The corrosion properties of Fe 48 Cr 15 Mo 14 Y 2 C 15 B 6 and of a newly developed Fe 50 Cr 18 Mo 8 Al 2 Y 2 C 14 B 6 bulk metallic amorphous alloys have been investigated under conditions that simulate the fuel cell environment and are compared with those of a stainless steel. Hydrogen gas and pressurized air were bubbled into a 1 M H 2 SO 4 C2 ppm F K solution at 75 8C solution, throughout the experiment to simulate the respective anodic and cathodic PEMFC environment. In comparison to the stainless steel, the Fe 50 Cr 18 Mo 8 Al 2 Y 2 C 14 B 6 amorphous alloy displays significantly higher corrosion resistance. q

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