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Partial Sulfurization of a 2D MOF Array for Highly Efficient Oxygen Evolution Reaction

机译：用于高效氧气进化反应的2D MOF阵列的局部硫化

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摘要

A feasible strategy for the in situ growth of two-dimensional (2D) [Ni_(3)(OH)_(2)(1,4-BDC)_(2)-(H_(2)O)_(4)]·2H_(2)O (Ni-BDC; 1,4-BDC = 1,4-benzenedicarboxylate) and the subsequent partial sulfurization treatment for the decoration of nickle sulfide (NiS) is developed. The fabricated hierarchically structured [email?protected] as a synergistic electrocatalyst shows extremely high activity toward the oxygen evolution reaction (OER). The optimal [email?protected] catalyst acquires a current density of 20 mA cm~(–2) at a lower overpotential of 330 mV and low Tafel slope of 62 mV dec~(–1), outperforming most previously reported Ni-based sulfide catalysts. Clearly, the combination of the NiS and Ni-BDC array contributed to the improvement of electron transfer, promotion of water adsorption, and increase of rich active species. In addition, the in situ created hierarchical structure not only affords feasible access for mass transport but also strengthens structural integrity, contributing to efficient and stable OER performance. This general and effective strategy anchoring conductive active species on a porous metal–organic framework (MOF) thus provides an efficient way to fabricate synergistic electrocatalysts for the OER.
机译：原位生长的可行策略（2D）[Ni_（3）（OH）_（2）（1,4-BDC）_（2） - （H_（2））_ （4）]·2H_（2）O（Ni-BDC; 1,4-BDC = 1,4-苯二甲羧酸甲酯）和随后的镍硫化物（NIS）的后续部分硫化处理。作为协同电催化剂的制造的分层结构[电子邮件吗？受保护的]显示出极高的氧气进化反应（Oer）的活性。优化催化剂。显然，NIS和NI-BDC阵列的结合有助于改善电子转移，促进水吸附和富含活性物质的增加。此外，原位创建的分层结构不仅提供了对大规模运输的可行性访问，而且还能增强结构完整性，有助于有效和稳定的OER性能。这种锚定在多孔金属 - 有机骨架（MOF）上锚定导电活性物质（MOF），因此提供了用于制造伊尔的协同电催化剂的有效方法。

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  • 来源
    《ACS applied materials & interfaces》 |2019年第44期|共7页
  • 作者

    Pengchen He; Yabo Xie; Yibo Dou; Jian Zhou; Awu Zhou; Xin Wei; Jian-Rong Li;

  • 作者单位

    Beijing Key Laboratory for Green Catalysis and Separation and Department of Chemistry and Chemical Engineering College of Environmental and Energy Engineering Beijing University of Technology;

    Beijing Key Laboratory for Green Catalysis and Separation and Department of Chemistry and Chemical Engineering College of Environmental and Energy Engineering Beijing University of Technology;

    Beijing Key Laboratory for Green Catalysis and Separation and Department of Chemistry and Chemical Engineering College of Environmental and Energy Engineering Beijing University of Technology;

    Beijing Key Laboratory for Green Catalysis and Separation and Department of Chemistry and Chemical Engineering College of Environmental and Energy Engineering Beijing University of Technology;

    Beijing Key Laboratory for Green Catalysis and Separation and Department of Chemistry and Chemical Engineering College of Environmental and Energy Engineering Beijing University of Technology;

    Beijing Key Laboratory for Green Catalysis and Separation and Department of Chemistry and Chemical Engineering College of Environmental and Energy Engineering Beijing University of Technology;

    Beijing Key Laboratory for Green Catalysis and Separation and Department of Chemistry and Chemical Engineering College of Environmental and Energy Engineering Beijing University of Technology;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    metal?organic frameworks (MOFs); electrocatalysis; oxygen evolution reaction; partial sulfurization; hierarchical structure;

    机译：金属？有机框架（MOF）;电催化;氧气进化反应;部分硫化;分层结构;

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