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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Autogenous growth of the hierarchical V-doped NiFe layer double metal hydroxide electrodes for an enhanced overall water splitting
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Autogenous growth of the hierarchical V-doped NiFe layer double metal hydroxide electrodes for an enhanced overall water splitting

机译：用于增强整体水分裂的等级V掺杂NiFe层双金属氢氧化物电极的自生生长

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摘要

NiFe layer double metal hydroxide nanosheets (NiFe LDHs) have been extensively investigated as one of the best promising candidates to construct efficient bifunctional catalysts. In this research, element (vanadium) doping into NiFe LDHs grown in nickel foam were synthesized by the one-step method and applied in overall water splitting. The content and structure of the composites were adjusted to regulate the catalyst's electronic structure and reduce the onset potential and achieved unprecedented electrocatalysis for OER and HER. The V-NiFe-LDH/NF showed perfect OER and HER activities with low Tafel slopes of 31.3 and 89.8 mV dec(-1), and small overpotentials of 195 and 120 mV at 10 mA cm(-2) in 1.0 m KOH solution, respectively. Electrochemical analysis indicated that the efficient catalytic activity of V-NiFe-LDHs/NF mainly benefited from V doping, which optimized the electronic structure and produce defects, thereby resulting in an enhanced conductivity, facile electron transfer, and adequate active sites.
机译：NiFe层双金属氢氧化物纳米片（NIFE LDHS）已被广泛研究，作为构建高效双官能催化剂的最佳候选者之一。在本研究中，通过单步方法合成掺杂到镍泡沫中生长的NiFe LDH的元素（钒）合成，并在整个水分裂中应用。调节复合材料的含量和结构以调节催化剂的电子结构，并降低发病潜力，并为oer和她实现了前所未有的电常分。 V-NiFe-LDH / NF显示完美的OER和她的活动，具有31.3和89.8 mV DEC（-1）的低TAFEL斜坡，以及195和120 mV的小型过电位，在1.0 m KOH溶液中为10 mA cm（-2） ， 分别。电化学分析表明V-NiFe-LDHS / NF的有效催化活性主要受益于V掺杂，其优化了电子结构并产生缺陷，从而导致导电性，容易的电子转移和足够的活性位点。

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    Liang Jin; Shen Haiqi; Ma Yaming; Liu Dongyu; Li Mingtao; Kong Jie; Tang Yusheng; Ding Shujiang;

  • 作者单位

    Northwestern Polytech Univ MOE Key Lab Space Appl Phys &

    Chem Shaanxi Key Lab Macromol Sci &

    Technol Sch Chem &

    Chem Engn Xian 710072 Peoples R China;

    Northwestern Polytech Univ MOE Key Lab Space Appl Phys &

    Chem Shaanxi Key Lab Macromol Sci &

    Technol Sch Chem &

    Chem Engn Xian 710072 Peoples R China;

    Xi An Jiao Tong Univ Dept Appl Chem Sch Sci Xian Key Lab Sustainable Energy Mat Chem Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Multiphase Flow Power Engn Int Res Ctr Renewable Energy Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Multiphase Flow Power Engn Int Res Ctr Renewable Energy Xian 710049 Peoples R China;

    Northwestern Polytech Univ MOE Key Lab Space Appl Phys &

    Chem Shaanxi Key Lab Macromol Sci &

    Technol Sch Chem &

    Chem Engn Xian 710072 Peoples R China;

    Northwestern Polytech Univ MOE Key Lab Space Appl Phys &

    Chem Shaanxi Key Lab Macromol Sci &

    Technol Sch Chem &

    Chem Engn Xian 710072 Peoples R China;

    Xi An Jiao Tong Univ Dept Appl Chem Sch Sci Xian Key Lab Sustainable Energy Mat Chem Xian 710049 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;无机化学;
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