中文摘要 本研究探討鎳金屬多孔材與銅金屬多孔材做為質子交換燃料電池燃料氣體流道之抗腐蝕性質，由於PEMFC內部呈酸性環境，勢必侵蝕金屬多孔材流道，因此透過表面鍍層處理優化其材料性質，並提升燃料電池金屬多孔材之疏水性質、導電性與抗腐蝕性等；利用化學氣相沉積法在鎳金屬與銅金屬表面成長石墨烯並與市面上常見之抗腐蝕鍍層(氮化鈦鍍層與氮化鋯鍍層)進行比較，並透過腐蝕極化測試、接觸角量測、界面接觸阻抗量測與表面微觀結構分析材料性質，進一步組成單電池比較性能表現與發電穩定性。 石墨烯鍍層表面結構緻密，擁有低電阻與高疏水性質的特性，鍍於過鍍金屬銅多孔材上比鎳多孔材更均勻而完整，且相較於氮化物鍍層，石墨烯能夠批覆在任何幾何形狀上，利於成長在結構複雜之金屬多孔材表面；氮化鋯鍍層雖擁有最高之界面接觸阻抗，不利燃料電池質子交換膜發電的傳導，但在延續燃料電池使用壽明與增加發電穩定性相當優秀，即使在嚴苛環境中也能有最佳之抗腐蝕能力；結果顯示石墨烯鍍層既穩定，化學性質與物理性質亦非常優秀，為現今最薄的腐蝕抑制層。 ;The research is about anti-corrosion property of different thin films coated on nickle foam and copper foam, coatings include graphene, TiN and ZrN. Coatings property are characterized through SEM, Raman spectrometer, contact angle test, interfacial contact resistance and electrochemical test. Furthermore, surface treated metal foam is used as reactant gas distributor in single fuel cell. I-V curves, long-term stability test were measured to investigate the effects of corrosion properties of nickle foam and copper foam on the performance of PEM fuel cell. Graphene coated foam shows the most dense surface in SEM. With low interfacial contact resistance and good hydrophobic, graphene coating is able to enhance the durability and material property of metal foam. Although ZrN coating has largest interfacial contact resistance which would decrease the conductivity of PEM fuel cell, ZrN coating increases metal foam life time and stability of PEM fuel cell power output effectively. Both graphene coating and ZrN coating have excellent anti-corrosion property, but ZrN coating performs better than graphene coating at high-temperature condition in electrochemical test.
