| Summary: | 碩士 === 國立成功大學 === 材料科學及工程學系 === 104 === SUMMARY
Stainless steels are alternative materials used as bipolar plates in polymer electrode membrane fuel cell(PEMFC), but the challenges of stainless steels are its lower electrical conductivity due to the surface oxide layer and it may be corroded in PEMFC environment. This research use coating method to coat a layer on the surface of stainless steels to improve its electrical conductivity, after that coat a resin layer with or without X1 wt% graphite powders on the surface to make the specimens, then after laser treatment resin will transform to carbon, this process will further improve its conductivity and corrosion resistance.
The results showed that coating layer on stainless steels is effective. When resin layer without X1 wt% graphite powders, the specimens will deform after laser treatment, this situation is not acceptable. When resin layer containing X1 wt% graphite powders, the specimens will maintain its initial shape and the electrical conductivity increased. Thus, stainless steels covered with a layer and resin layer after laser treatment may replace traditional graphite plates as bipolar plates in PEMFC, but the corrosive behavior has not be proved yet.
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