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首页> 外文期刊>Journal of power sources >Novel nanocrystalline PdNi alloy catalyst for methanol and ethanol electro-oxidation in alkaline media
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Novel nanocrystalline PdNi alloy catalyst for methanol and ethanol electro-oxidation in alkaline media

机译：碱性介质中甲醇和乙醇电氧化的新型纳米PdNi合金催化剂

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摘要

Nanocrystalline Pd_(40)Ni_(60) alloy catalyst has been fabricated by dealloying a ternary Al_(75)Pd_(10)Ni_(15) alloy in a 20wt.% NaOH aqueous solution under free corrosion conditions. The microstructure and catalytic performance of the catalyst have been characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, and cyclic voltam-metry. The Pd_(40)Ni_(60) alloy consists of nanocrystals with sizes of 5-10nm, and Pd/Ni elements exist in a solid solution form. Moreover, nanocrystalline zones, amorphous zones and lattice distortion can be observed in the Pd_(40)Ni_(60) alloy. Electrochemical measurements demonstrate that, for equivalent mass Pd, Pd_(40)Ni_(60) has an enhanced electrocatalytic performance towards methanol and ethanol oxidation in alkaline media than nanoporous Pd. The nanocrystalline Pd_(40)Ni_(60) alloy is a promising catalyst towards alcohol oxidation in alkaline media for fuel cell applications.
机译：纳米晶Pd_（40）Ni_（60）合金催化剂是通过在自由腐蚀条件下在20wt。％NaOH水溶液中脱配三元Al_（75）Pd_（10）Ni_（15）合金制成的。通过X射线衍射，扫描电子显微镜，透射电子显微镜，高分辨率透射电子显微镜和循环伏安法表征了催化剂的微观结构和催化性能。 Pd_（40）Ni_（60）合金由尺寸为5-10nm的纳米晶体组成，并且Pd / Ni元素以固溶体形式存在。此外，在Pd_（40）Ni_（60）合金中可以观察到纳米晶区，非晶区和晶格畸变。电化学测量表明，对于等质量的Pd，Pd_（40）Ni_（60）在碱介质中对甲醇和乙醇氧化的电催化性能要比纳米多孔Pd增强。纳米晶Pd_（40）Ni_（60）合金是一种有前途的催化剂，可用于燃料电池应用中碱性介质中的醇氧化。

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  • 来源
    《Journal of power sources》 |2011年第14期|p.5823-5828|共6页
  • 作者

    Zhen Qi; Haoran Geng; Xiaoguang Wang; Changchun Zhao; HongJi; Chi Zhang; Junling Xu; Zhonghua Zhang;

  • 作者单位

    Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (MOE), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923,Jinan 250061, PR China;

    School of Materials Science and Engineering, University ofJinan, Jiwei Road 106, Jinan 250022, PR China;

    Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (MOE), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923,Jinan 250061, PR China;

    Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (MOE), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923,Jinan 250061, PR China;

    Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (MOE), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923,Jinan 250061, PR China;

    Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (MOE), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923,Jinan 250061, PR China;

    Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (MOE), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923,Jinan 250061, PR China;

    Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (MOE), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923,Jinan 250061, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    direct alcohol fuel cells; electro-oxidation; alloy catalyst; dealloying; nanoporous alloys;

    机译：直接酒精燃料电池;电氧化合金催化剂脱售纳米多孔合金;
  • 入库时间 2022-08-18 00:24:34

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