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首页> 外文期刊>Advanced energy materials >Electronically Double-Layered Metal Boride Hollow Nanoprism as an Excellent and Robust Water Oxidation Electrocatalysts
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Electronically Double-Layered Metal Boride Hollow Nanoprism as an Excellent and Robust Water Oxidation Electrocatalysts

机译：电子双层金属硼化物中空纳米橡胶作为优异且坚固的水氧化电催化剂

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摘要

Metal-metalloid compounds have been paid much attention as new high-performance water oxidation catalysts due to their exceptional durability for water oxidation in alkaline media originating from the multi-dimensional covalent bonding of the metalloid with the surrounding metal atoms. However, compared to the excellent stability, a relatively low catalytic activity of metal-metalloids often limits their practical application as high-performance water oxidation catalysts. Here, for the first time, disclosed is a novel self-templating strategy combined with atomic layer deposition (ALD) to design the electrochemically active and stable quaternary metal boride (vanadium-doped cobalt nickel boride, VCNB), hollow nanoprism by inducing electronic double layers on the surface. The incorporation of V in a double-layered structure can substantially increase the number of surface active sites with unsaturated electronic structure. Furthermore, the induced electronic double layers of V can effectively protect the dissolution of the surface active sites. In addition, density functional theory (DFT) calculations reveal that the impressive water oxidation properties of VCNB originate from the synergetic physicochemical effects of the different metal elements, Co and B as active sites, Ni as a surface electronic structure modifier, and V as a charge carrier transporter and supplier.
机译：由于它们具有卓越的含有金属介质的碱性介质的卓越性耐久性，因此金属 - 金属化合物被认为是新的高性能水氧化催化剂。源自与周围金属原子的多维共价键合的碱性介质。然而，与优异的稳定性相比，金属 - 金属化的相对低的催化活性通常将其实际应用限制为高性能水氧化催化剂。这里公开了一种新的自模板沉积（ALD）的新型自模板沉积（ALD），以设计电化学活性和稳定的季金属硼化物（钒掺杂的钴镍硼化物，VCNB），通过诱导电子双水表面上的层。在双层结构中的掺入可以基本上增加具有不饱和电子结构的表面活性位点的数量。此外，诱导的电子双层V可以有效地保护表面活性位点的溶解。此外，密度函数理论（DFT）计算表明，VCNB的令人印象深的水氧化特性源自不同金属元素，CO和B作为活性位点的协同物理化学效应，Ni作为表面电子结构改性剂，以及V作为A.充电载体运输车和供应商。

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  • 来源
    《Advanced energy materials》 |2019年第13期|1803799.1-1803799.11|共11页
  • 作者

    Han HyukSu; Hong Yu-Rim; Woo Jungwook; Mhin Sungwook; Kim Kang Min; Kwon Jiseok; Choi Heechae; Chung Yong-Chae; Song Taeseup;

  • 作者单位

    Korea Inst Ind Technol 137-41 Gwahakdanji Ro Gangneung Si 25440 Gangwon South Korea;

    Korea Inst Ind Technol 137-41 Gwahakdanji Ro Gangneung Si 25440 Gangwon South Korea|Seoul Womens Univ Dept Chem Seoul 01797 South Korea;

    Hanyang Univ Div Mat Sci & Engn 222 Wangsimni Ro Seoul 04763 South Korea;

    Korea Inst Ind Technol 156 Gaetbeol Ro Incheon 406840 South Korea;

    Korea Inst Ind Technol 137-41 Gwahakdanji Ro Gangneung Si 25440 Gangwon South Korea;

    Hanyang Univ Dept Energy Engn Seoul 04763 South Korea;

    Korea Inst Sci & Technol Ctr Computat Sci 5 Hwarang Ro 14 Gil Seoul 02792 South Korea|Univ Cologne Inst Inorgan Chem Greinstr 6 D-50939 Cologne Germany;

    Hanyang Univ Div Mat Sci & Engn 222 Wangsimni Ro Seoul 04763 South Korea;

    Hanyang Univ Dept Energy Engn Seoul 04763 South Korea;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    electrocatalysts; metal boride; oxygen evolution reaction; water splitting;

    机译：电催化剂;金属硼化物;氧气进化反应;水分裂;

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