本論文研究碳紙支撐鈀觸媒的結構特性和的ORR活性，一方面電鍍鈀和鈀鈷觸媒於碳紙或氧化錫奈米線支撐上，另一方面電鍍具有優選晶面的鈀奈米晶體於碳紙上，進行循環伏安(CV)和使用旋轉電極軸(RDE)作線性掃描伏安(LSV)的電化學測試，經由電化學測試的結果，Pd-Co/SnO2 NW/CP和具有優選Pd(110)的鈀觸媒有優秀的表現。
鈀鈷電化學觸媒中，脈衝電流密度100mAcm-2，鍍0.1秒停0.9秒及Pd:Co莫耳比例66: 34的觸媒Pd-Co/SnO2 NW/CP，擁有46.8 m2g-1 Pd的電化學比表面積，在0.85V vs. RHE的ORR電流為0.17mAcm-2，另一方面在添加NaCl於溶液，以-0.3V vs. Ag/AgCl電鍍具有優選晶面的鈀奈米晶體於碳紙上，擁有2.43 m2g-1 Pd的電化學比表面積為和在0.85V vs. RHE的ORR電流為0.89mAcm-2，所以具有優選晶面的鈀奈米晶體顯然為更有潛力的ORR觸媒。

This thesis aims to investigate the structure features and the activities on oxygen reduction reaction (ORR) of Pd catalysts supported by the carbon paper, which is generally utilized in fuel cell gas diffusion purpose. One approach is to electrodeposit Pd and Pd-Co catalysts on the carbon paper or the carbon paper loaded with SnO2 nanowires. The other approach is to electrodeposit the preferential oriented Pd nanocrystals on carbon paper. The electrochemical performance of these catalysts is measured using cyclic voltammetry (CV), linear scanning voltammetry with rotation disk electrode (RDE). Among the catalysts prepared, the Pd-Co/SnO2NW/CP and the preferential (110) Pd catalysts stand out in the ORR activity.
For the Pd-Co electrocatalysts, the sample of Pd-Co/SnO2NW/CP with a molar ratio of Pd:Co=66:34, prepared by 100 mA cm-2 pulse current with duration time 0.1 s and pause time 0.9 s, exhibits an electrochemical surface area of 46.8 m2 g-1, and 0.17 mA cm-2 oxygen reduction current at 0.85 V (vs RHE). For the sample of preferential oriented Pd nanocrystals on carbon paper, deposited at -0.3 V in a sodium chloride buffered solution, shows an electrochemical surface area of 2.43 m2 g-1, and 0.89 mA cm-2 oxygen reduction current at 0.85 V (vs RHE). The preferential oriented Pd nanocrystals appear to be more promising on the ORR activity.

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