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首页> 外文期刊>Advanced Functional Materials >Hierarchical Layered Double Hydroxide Microspheres with Largely Enhanced Performance for Ethanol Electrooxidation
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Hierarchical Layered Double Hydroxide Microspheres with Largely Enhanced Performance for Ethanol Electrooxidation

机译：乙醇电氧化性能大大增强的分层双氢氧化物微球

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摘要

Hierarchical MgFe-layered double hydroxide (LDH) microspheres with tunable interior structure are synthesized by a facile and cost-effective sur-factant-templated method. Scanning and transmission electron microscopy images reveal that the obtained microspheres display a three-dimensional architecture with hollow, yolk-shell and solid interior structure, respectively, with continuous changes in specific surface area and pore-size distribution. Moreover, the hollow MgFe-LDH microspheres exhibit excellent electrocata-lytic oxidation of ethanol in alkaline fuel cell, including high activity, long-term durability and cycling stability, owing to the significantly improved faradaic redox reaction and mass transport. Therefore, this work provides a promising approach for the design and synthesis of structure tunable materials with largely enhanced ethanol electrooxidation behavior, which can be potentially used in noble metal-free alkaline fuel cells.
机译：通过一种简便且经济高效的表面活性剂模板化方法合成了具有可调内部结构的多层MgFe层状双氢氧化物（LDH）微球。扫描和透射电子显微镜图像显示，所获得的微球显示出具有空心，卵黄壳和固体内部结构的三维结构，分别具有比表面积和孔径分布的连续变化。此外，中空的MgFe-LDH微球由于在法拉第氧化还原反应和质量传递方面的显着改善，在碱性燃料电池中表现出优异的乙醇电催化氧化性能，包括高活性，长期耐用性和循环稳定性。因此，这项工作为设计和合成具有大大增强的乙醇电氧化性能的结构可调材料提供了一种有希望的方法，该方法可潜在地用于无贵金属的碱性燃料电池。

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  • 来源
    《Advanced Functional Materials》 |2013年第28期|3513-3518|共6页
  • 作者

    Mingfei Shao; Fanyu Ning; Jingwen Zhao; Min Wei; David G. Evans; Xue Duan;

  • 作者单位

    State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029, P. R. China;

    State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029, P. R. China;

    State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029, P. R. China;

    State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029, P. R. China;

    State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029, P. R. China;

    State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029, P. R. China;

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