Development of Glassy Alloy Separators for a Proton Exchange Membrane Fuel Cell (PEMFC)

Akihisa Inoue; Takayoshi Shimizu; Shin-ichi Yamaura; Yuichiro Fujita; Shinobu Takagi; Hisamichi Kimura

doi:10.2320/matertrans.46.1706

Akihisa Inoue, Takayoshi Shimizu, Shin-ichi Yamaura, Yuichiro Fujita, Shinobu Takagi, Hisamichi Kimura

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Keywords: metallic glass, separator, bipolar plate, solid polymer fuel cell (SPFC), polymer electrolyte fuel cell (PEFC)

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2005 Volume 46 Issue 7 Pages 1706-1710

DOI https://doi.org/10.2320/matertrans.46.1706

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Abstract

The Ni₆₀Nb₁₅Ti₁₅Zr₁₀ glassy alloy was developed as a separator material for a proton exchange membrane fuel cell (PEMFC). The corrosion rate of the glassy alloy in sulfuric acid was approximately 3 digits lower than SUS316L. A precise groove forming of the glassy alloy can be achieved by hot-pressing in the supercooled liquid state. The result of the power generation test of the single cell assembled with the groove-formed glassy alloy sheets revealed that sufficient power was generated. Moreover, the deterioration of the morphology of the glassy separator could hardly be recognized even after the durability test for 350 h.

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