首页> 中文期刊> 《能源化学:英文版》 >High performance n+p-Si/Ti/NiSxOy photocathode for photoelectrochemical hydrogen evolution in alkaline solution

High performance n+p-Si/Ti/NiSxOy photocathode for photoelectrochemical hydrogen evolution in alkaline solution

         

摘要

Silicon, as a promising semiconductor for fabricating photocathode toward photoelectrochemical hydro-gen evolution reaction (PEC-HER), should be improved in light harvesting ability and catalytic kinetics to obtain high PEC performance. Herein, a novel amorphous Nickel Oxysulfide (NiSxOy) film is effectively integrated with a Ti protected n+p-Si micropyramid photocathode by the electrodeposition method. The fabricated n+p-Si/Ti/NiSxOy photocathode exhibits excellent PEC-HER performance with an onset poten-tial of 0.5 V (at J =-0.1 mA/cm^2), a photocurrent density of -26 mA/cm^2 at 0 V vs. RHE, and long term stability of six hours in alkaline solution (pH≈14). The synergy of unique n+p-Si micropyramid ar-chitectures (omnidirectional broadband light harvesting ability), novel amorphous NiSxOy catalyst (high HER electrocatalytic activity and good optical transparency) results in the high performance of n+p-Si/Ti/NiSxOy. This work offers a novel strategy for effectively integrating electrocatalysts with semicon-ductor to design efficient photoelectrode toward PEC water splitting.

著录项

  • 来源
    《能源化学:英文版》 |2019年第3期|P.101-107|共7页
  • 作者单位

    [1]Key Laboratory of Biomass Chemical Engineering of Ministry of Education;

    College of Chemical and Biological Engineering;

    Zhejiang University;

    Hangzhou 310027;

    Zhejiang;

    China;

    [1]Key Laboratory of Biomass Chemical Engineering of Ministry of Education;

    College of Chemical and Biological Engineering;

    Zhejiang University;

    Hangzhou 310027;

    Zhejiang;

    China;

    [1]Key Laboratory of Biomass Chemical Engineering of Ministry of Education;

    College of Chemical and Biological Engineering;

    Zhejiang University;

    Hangzhou 310027;

    Zhejiang;

    China;

    [1]Key Laboratory of Biomass Chemical Engineering of Ministry of Education;

    College of Chemical and Biological Engineering;

    Zhejiang University;

    Hangzhou 310027;

    Zhejiang;

    China;

    [1]Key Laboratory of Biomass Chemical Engineering of Ministry of Education;

    College of Chemical and Biological Engineering;

    Zhejiang University;

    Hangzhou 310027;

    Zhejiang;

    China;

    [1]Key Laboratory of Biomass Chemical Engineering of Ministry of Education;

    College of Chemical and Biological Engineering;

    Zhejiang University;

    Hangzhou 310027;

    Zhejiang;

    China;

    [1]Key Laboratory of Biomass Chemical Engineering of Ministry of Education;

    College of Chemical and Biological Engineering;

    Zhejiang University;

    Hangzhou 310027;

    Zhejiang;

    China;

  • 原文格式 PDF
  • 正文语种 CHI
  • 中图分类 物理学;
  • 关键词

    Photoelectrochemical; water; splitting; Silicon; Photocathode; Nickel; oxysulfide;

    机译:光电化学;水;裂解;硅;光电阴极;镍;氧硫化物;
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