本論文包含了兩個部分：
(1)利用置換反應將銅離子置換到金屬鋁表面，以增強其電導性。
(2)在水溶液與離子液體中將鈀離子還原至發泡鎳電極，並應用在乙醇催化中。
第一部分：在實驗中，在鋁金屬上置換一層銅層，藉此增加基材的導電性。在此選用了添加螯合劑的鹼性水溶液，並改變置換溶液濃度、pH值、反應時間以及反應溫度等條件，且使用開路電位對時間的變化觀察整個反應的進行，最後在鋁金屬表面形成連續且平整的銅層。使用掃描電子顯微鏡觀察表面形貌和使用能量分散式光譜儀(EDX)及X光繞射儀分析證實了銅鋁置換反應的發生。並使用表面元素分析mapping觀察金屬分布狀況、原子力顯微鏡(AFM)鑑定置換過後表面的平整性以及使用四點探針量測電阻值的變化，證實銅鋁金屬的導電度優於金屬鋁。
第二部分：發泡鎳金屬可以在含有PdCl2的氯化鈉溶液中產生自發性的沉積置換反應。藉由改變鹽類種類、比例、氯化鈀濃度及置換時間、酸鹼值等參數得到不同的結果，將置換後的金屬材料以附有能量散射光譜儀的掃描式電子顯微鏡觀察置換前後形貌的變化並確定欲置換的金屬存在和含量與分布情形，同時也使用X光粉末繞射儀來鑑定晶相。進一步的將置換過後的鈀鎳雙金屬做為乙醇氧化的催化材料，並使用循環伏安法(CV)得知鈀鎳雙金屬電極的催化訊號峰會優於鈀電極及鎳電極的催化訊號峰。

This dissertation includes two parts:
(1)Copper deposited on aluminum by galvanic displacement in water solution to improve the electric conductivity, and
(2)Deposition of Metal palladium on the surface of nickel foam in water solution and ionic liquids for ethanol electro-oxidation.

In the first part, the electrical conductivity of substrate can be improved by the replacement of copper on aluminum. To conduct the galvanic displacement, the alkaline solutions containing the chelating agents were used with some different experimental conditions, such as, changing the concentration of copper ions, pH value, time and temperature for displacement. We can monitor the overall reaction by recording the changes of open circuit potential in the displacement (OCP-t). Under certain conditions, a continuous and smooth copper layer can be deposited on aluminum surface. The surface morphology was characterized by scanning electron microscopy and the galvanic displacement was confirmed by EDX and XRD analysis. And, the distribution of metal was invetigated by elemental mapping. Atomic force microscopy (AFM) was used to identify the roughness of the surface of Cu/Al metal. The resistance of metal was measured by the four-point probe method. The result shows that the conductivity of Cu/Al bimetallic is better than aluminum.

In the second part of this study, the surface of nickel foam was modified by spontaneous deposition of Pd carried out in solutions of NaCl containing PdCl2. By tuning the conditions, such as, the type of salts, the concentration and proportion between palladium chloride and salt, the replacement time, and pH value, the morphologies of Pd/Ni foam were examined by scanning electron microscopy (SEM), and the compositions of the deposits were examined by energy dispersive X-ray spectroscopy (EDS or EDX). The crystalline phases of the samples were characterized by X-ray diffraction (XRD). The electrochemical activity of the as-prepared electrode for ethanol oxidation has been investigated by cyclic voltammetry (CV). The results show that the oxidation peak current of the Pd/Nickel foam electrode is better than that of Pd electrode and nickel foam.

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