• 作者： Wen, Ten-Chin; Hu, Che-Hao; Hu, Chi-Chang
• 中文摘要： 本文乃是利用循環伏安法研究鎳鉑共鍍層在鹼性溶液之電化學行為與其對甲醇氧化之電觸媒活性。當鉑原子百分比約為60時, 鎳鉑共鍍層上對甲醇氧化之電觸媒活性達到最高。不論是否經過蝕刻, 鉑在鎳鉑共鍍層上對甲醇氧化之電觸媒活性主要取決於鎳鉑共鍍層未經蝕刻前之組成。水合程度較高之Pt(IV)氧化物, 對甲醇氧化與氧氣產生反應都有較佳的電觸媒活性。Pt(OH)ads氫氧化物中間體則是在正負掃描之較低電位範圍內, 對甲醇氧化俱備電觸媒活性之物種。
• 英文摘要： The electrochemical and electrocatalytic properties of Ni-Pt codeposits for methanol oxidation in an alkaline medium were characterized by cyclic voltammetry. The Ni-Pt codeposit with ca. Pt 60 a/o was found to exhibit the maximal activity for the oxidation of methanol in the low potential range. The electrocatalytic activity of all Ni-Pt codeposits (before and after leaching) for methanol oxidation was found to depend on their original compositions/textural properties before leaching. The hydroxyl Pt (IV) species with a higher hydrated property possessed a higher activity for the methanol oxidation and oxygen evolution reactions (OER). The presence of a hydroxyplatinum intermediate, Pt (OH)/sub ads/, was proposed to be responsible for the anodic peaks of methanol oxidation in the less positive potential region on both positive and negative sweeps.
• 中文關鍵字： 循環伏安法; 甲醇氧化; 鎳鉑共鍍; 電催化活性; 氫氧化鉀
• 英文關鍵字： Cyclic Voltammetry; Methanol Oxidation; Nickel Platinum Codeposition; Electrocatalytic Activity; Potassium Hydroxide