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首页> 外文期刊>Advanced energy materials >High Activity Hydrogen Evolution Catalysis by Uniquely Designed Amorphous/Metal Interface of Core–shell Phosphosulfide/N-Doped CNTs
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High Activity Hydrogen Evolution Catalysis by Uniquely Designed Amorphous/Metal Interface of Core–shell Phosphosulfide/N-Doped CNTs

机译：独特设计的核壳型磷硫/ N掺杂碳纳米管的非晶/金属界面实现高活性氢析出催化

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摘要

A cost effective hydrogen evolution reaction (HER) catalyst that does not use precious metallic elements is a crucial demand for environment-benign energy production. The family of earth-abundant transition metal compounds of nitrides, carbides, chalcogenides, and phosphides is one of the promising candidates for such a purpose, particularly in acidic conditions. However, its catalytic performance is still needed to be enhanced through novel material designs and crystalline engineering. Herein, a chemically and electronically coupled transition metal phosphosulfide/N-doped carbon nanotubes (NCNT) hybrid electrocatalyst is fabricated via a two-step synthesis. The uniquely designed synthesis leads to the material morphology featuring a core-shell structure, in which the crystalline metal phosphide core is surrounded by an amorphous phosphosulfide nanoshell. Notably, due to the favorable modification of chemical composition and surface properties, core-shell CoP@PS/NCNT exhibits the noticeable HER activity of approximately -80 mV @ -10 mA cm(-2) with excellent durability, which is one of the highest active nonnoble metal electrocatalysts ever reported thus far.
机译：不使用贵金属元素的具有成本效益的析氢反应（HER）催化剂对环境友好型能源生产至关重要。氮化物，碳化物，硫族化物和磷化物的富含地球的过渡金属化合物家族是实现该目的的有前途的候选者之一，特别是在酸性条件下。但是，仍然需要通过新颖的材料设计和晶体工程来提高其催化性能。在此，通过两步合成来制备化学和电子偶联的过渡金属磷硫化物/ N掺杂碳纳米管（NCNT）混合电催化剂。独特设计的合成方法导致了具有核-壳结构的材料形态，其中结晶的金属磷化物核被无定形的磷硫化物纳米壳包围。值得注意的是，由于化学成分和表面性质的良好修饰，核-壳型CoP @ PS / NCNT表现出明显的HER活性，在-10 mA cm（-2）时约为-80 mV，具有出色的耐久性，这是其中之一迄今为止报道过的活性最高的非贵金属电催化剂。

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  • 来源
    《Advanced energy materials》 |2018年第13期|1702806.1-1702806.7|共7页
  • 作者

    Li Dong Jun; Kang Joonhee; Lee Ho Jin; Choi Dong Sung; Koo Sung Hwan; Han Byungchan; Kim Sang Ouk;

  • 作者单位

    Korea Adv Inst Sci & Technol, Natl Creat Res Initiat Ctr Multidimens Directed N, Dept Mat Sci & Engn, Daejeon 34141, South Korea;

    Yonsei Univ, Dept Chem & Biomol Engn, Seoul 03722, South Korea;

    Korea Adv Inst Sci & Technol, Natl Creat Res Initiat Ctr Multidimens Directed N, Dept Mat Sci & Engn, Daejeon 34141, South Korea;

    Korea Adv Inst Sci & Technol, Natl Creat Res Initiat Ctr Multidimens Directed N, Dept Mat Sci & Engn, Daejeon 34141, South Korea;

    Korea Adv Inst Sci & Technol, Natl Creat Res Initiat Ctr Multidimens Directed N, Dept Mat Sci & Engn, Daejeon 34141, South Korea;

    Yonsei Univ, Dept Chem & Biomol Engn, Seoul 03722, South Korea;

    Korea Adv Inst Sci & Technol, Natl Creat Res Initiat Ctr Multidimens Directed N, Dept Mat Sci & Engn, Daejeon 34141, South Korea;

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

    carbon nanotubes; catalysts; doping; hydrogen evolution; interfaces; metal phosphosulfide;

    机译：碳纳米管;催化剂;掺杂;析氢;界面;金属磷硫化物;

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