纳米多孔PtTiCu催化剂的制备及其电化学性能的研究

发布时间：2018-06-21 08:08

  本文选题：脱合金 + 电催化剂　； 参考：《功能材料》2017年04期

【摘要】：采用单辊旋淬方法制备了成分和结构均匀的铂钛铜合金条带,通过脱合金方法进行选择性腐蚀得到了具有三维双连续孔洞结构的纳米多孔铂钛铜(np-PtTiCu)催化剂。将np-PtTiCu作为三电极测试体系中的工作电极,利用循环伏安法表征了其对甲酸、乙醇和甲醇的电催化氧化性能以及抗CO中毒能力,利用恒电位极化方法表征了其电催化稳定性。结果表明,np-PtTiCu催化剂比Pt/C催化剂具有更高的电催化活性,更好的抗CO中毒能力和稳定性,这些性能的改善与电极材料的多孔结构有关。
[Abstract]:Pt-Ti-Cu alloy ribbons with uniform composition and structure were prepared by single roll spinning quenching method. The nano-porous Pt-Ti Cu / Cu catalyst with three dimensional double continuous pore structure was prepared by selective corrosion by dealloying method. Using np-PtTiCu as the working electrode in the three-electrode measurement system, the electrocatalytic oxidation of formic acid, ethanol and methanol and its ability to resist CO poisoning were characterized by cyclic voltammetry. The electrocatalytic stability of np-PtTiCu was characterized by potentiostatic polarization method. The results show that np-PtTiCu catalyst has higher electrocatalytic activity, better resistance to CO poisoning and better stability than that of Pt / C catalyst. The improvement of these properties is related to the porous structure of electrode materials.
【作者单位】： 上海理工大学材料科学与工程学院;上海理工大学机械工程学院;天津理工大学新能源材料与低碳技术研究院;
【基金】：上海市科委地方高校能力建设计划资助项目(16060502400)
【分类号】：O643.36;TM911.4
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本文编号：2047845