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Nitrogen anion-decorated cobalt tungsten disulfides solid solutions on the carbon nanofibers for water splitting

机译：氮阴离子装饰的钴钨在碳纳米纤维上二硫化固溶溶液进行水分裂

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摘要

A facile method to prepare nitrogen anion-decorated cobalt tungsten disulfides solid solutions, retaining ultra-thin WS2-like nanosheet structures (The N-CoxW1-xS2) anchored on carbon nanofibers (CNFs), is developed. The synergistic effect of the WS2 nanosheets provides a secure framework for stabilizing the amorphous Co-S clusters, CNFs substrate and nitrogen anion-decoration significantly enhances the inherent conductivity of the catalyst, resulting in a significantly promoted hydrogen evolution reaction activity and stable performance compared to pure Co9S8 nanoparticles or ultra-thin WS2 nanosheets. The N-CoxW1-xS2 electrode demonstrates the excellent electrocatalytic performance, with current density of 10 mA cm(-2) at a low overpotential of 93 mV and Tafel slope of 85 mV dec(-1), as well as the long-term stability in acid electrolyte. The present investigation may provide a feasible strategy for incorporating other heteroatoms into transitional metal disulfides materials to design catalysts with highly active and stable performance for water splitting.
机译：一种制备氮阴离子装饰钴钨钨固体溶液的容易方法，施加在碳纳米纤维（CNFS）上保持超薄WS2样纳芯结构（N-COSW1-XS2）。 WS2纳米片的协同效应提供了用于稳定无定形CO-S簇的安全框架，CNFS衬底和氮阴离子装饰显着提高了催化剂的固有电导率，导致显着促进的氢进化反应活性和稳定的性能与纯CO9S8纳米粒子或超薄WS2纳米液。 N-CoxW1-XS2电极显示出优异的电催化性能，电流密度为10 mA cm（-2），低过电位为93mV和85mV DEC（-1）的TAFEL斜率，以及长期酸电解质中的稳定性。本研究可以提供一种可行的策略，将其他杂原子掺入过渡金属二硫化物材料中，以设计具有高活跃和稳定的水分裂性能的催化剂。

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  • 来源
    《Nanotechnology》 |2018年第38期|共5页
  • 作者

    Wan Meng; Li Jiang; Li Tao; Zhu Han; Wu Weiwei; Du Mingliang;

  • 作者单位

    Zhejiang Sci Tech Univ Coll Mat &

    Text Key Lab Adv Text Mat &

    Mfg Technol Minist Educ Hangzhou 310018 Zhejiang Peoples R China;

    Zhejiang Sci Tech Univ Coll Mat &

    Text Key Lab Adv Text Mat &

    Mfg Technol Minist Educ Hangzhou 310018 Zhejiang Peoples R China;

    Zhejiang Sci Tech Univ Coll Mat &

    Text Key Lab Adv Text Mat &

    Mfg Technol Minist Educ Hangzhou 310018 Zhejiang Peoples R China;

    Zhejiang Sci Tech Univ Coll Mat &

    Text Key Lab Adv Text Mat &

    Mfg Technol Minist Educ Hangzhou 310018 Zhejiang Peoples R China;

    Xidian Univ Sch Adv Mat &

    Nanotechnol Xian 710126 Shaanxi Peoples R China;

    Zhejiang Sci Tech Univ Coll Mat &

    Text Key Lab Adv Text Mat &

    Mfg Technol Minist Educ Hangzhou 310018 Zhejiang Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    solid solutions; water splitting; electrospinning; carbon nanofibers; hydrogen energy;

    机译：固溶体;水分裂;静电纺丝;碳纳米纤维;氢气能量;

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