環境保護是國家推動永續發展的重要指標，亦為影響國家能源政策以及科技導向的關鍵因素。世界各國在開發新能源過程中，發現氫能是最潔淨能源可同時減少污染物及CO2排放，而燃料電池（fuel cell）是利用氫能的載具，很適合投入研究發展的選擇。本研究即以最具商用潛力之質子交換模型燃料電池(PEMFC)為研究課題，以高週波電漿磁控濺鍍方式披覆奈米厚度之白金鍍層，並探討不同的濺鍍披覆白金方式、白金載量、Nafion溶液塗量及濺鍍操作參數，對燃料電池效能的影響。研究結果顯示，電漿操作參數實驗中(50 W~150 W; 10-4 ~10-2 Torr)以輸入功率100 W、操作壓力10-3 Torr下製備之陰極電極有較佳之放電效能。本研究即以此為操作參數，陰極電極在相同的Pt披覆量下，濺鍍在碳布載碳粒之Pt/C之電池放電效能比直接濺鍍在Nafion membrane者為佳。然而濺鍍在碳布載碳粒上陰極電極之放電效能並不絕對隨著Pt觸媒披覆量增加而提升，於0.02~0.4 mg Pt / cm2載量範圍內以Pt載量0.1 mg / cm2者有較佳之效能。另外，比較塗刷Nafion溶液之電極，雖能增加觸媒之活性面積，但可能因O2質傳阻抗之增加，仍無助於放電效能之提升。

　　Environmental protection has been recongnized as the main approach for global society　development in recent years. A number of recent studies suggest that moving to the use of hydrogen may be much cleaner. The use of fuel cells with hydrogen fuel may alleviate the emission of air pollutants from utilizing fossil fuels.
　　
　　This study focused on the fabrication of MEAs or electrodes used for H2-O2 fuel cells by a RF plasma sputtering process incorporating Pt nano-film coating. The effects of Pt sputtering ways, Pt loading, Nafion solution addition, and sputtering source power in electrode fabrication on the MEA/cell performance were evaluated according to the measurements of current density vs. potential (polarization) curve, cyclic voltammetry (CV), and AC impedance spectra.
　　
　　The results show that the MEAs fabricated by direct sputtering Pt onto the Nafion membrane electrolyte exhibited very poor cell performances although the sputtered Pt films were very thin (nano-size, e.g., approximately 50 nm at the Pt loading of 0.1 mg/cm2). The MEAs prepared by sputtering Pt onto uncatalyzed substrate (carbon particles supported with carbon cloth) followed by the hot-press with Nafion membrane showed various performances at the Pt loadings of 0.02, 0.04, 0.1, 0.2 and 0.4 mg/cm2. The better cathode Pt loading was found to be 0.1 mg/cm2 because it displayed a greater electrochemical active surface (EAS) area and a lower kinetic resistance than the others. The addition of Nafion solution to the sputtered Pt layers with the loading of 0.1 to 0.3 mg/cm2 did not improve the MEA/cell performance because this treatment enlarged the EAS area, possibly increased ohmic and mass transfer resistances, even though it enlarged the EAS area. The MEA prepared at the sputtering source power of 100 W and Argon at 10-3 Torr showed a higher MEA/cell performance. This is mainly because the former MEA had lower ohmic and kinetic resistances than the latter two MEAs.

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