S. Jafar Hoseini, Mehrangiz Bahrami, Golandam Askarisarvestani, S. Masoud Nabavizadeh, Hamid R. Shahsavari, Elvira De Giglio, Piero Mastrorilli
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引用次数: 0
摘要
本研究通过简单还原[Pt(cod)Cl2]和[Au(PPh3)Cl]复合物，在液-液界面上生成了 PtAu 薄膜。生成的薄膜被直接转移到玻璃碳电极上（无需使用 Nafion™），并在甲醇氧化反应中用作电催化剂。实验和理论结果均证实，与铂钯或铂薄膜相比，铂钯具有更低的 CO 中毒现象。与铂或铂钯薄膜电催化剂相比，PtAu 薄膜的高 jf/jb 比（其中 jf 是正向路线中阳极峰的最大电流，jb 是反向路线中峰值电流的最大值）和理论计算的吸附能显示出更高的 CO 容忍度。
PtAu Thin Film as Anode Electrocatalyst in Methanol Fuel Cell
Expanding the application of methanol fuel cells in the energy economy is only feasible when a low-cost or highly CO-tolerant electrocatalyst replaces Pt catalysts to enhance the electrocatalytic properties of Pt. In this study, a PtAu thin film was produced at the liquid-liquid interface through the simple reduction of [Pt(cod)Cl2] and [Au(PPh3)Cl] complexes. The resulting thin film was directly transferred onto a glassy carbon electrode (without the application of Nafion™) and used as an electrocatalyst in the methanol oxidation reaction. Experimental and theoretical results both confirmed that PtAu exhibits lower CO poisoning compared to PtPd or Pt films. The high jf/jb ratio (where jf is the maximum current of the anodic peak in the forward route and jb is the maximum of peak current in the backward route), and theoretically calculated adsorption energies for PtAu thin film showed higher CO tolerance compared to Pt or PtPd thin film electrocatalysts.
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