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首页> 外文期刊>International journal of hydrogen energy >High-throughput characterization of Ag-V-O nanostructured thin-film materials libraries for photoelectrochemical solar water splitting
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High-throughput characterization of Ag-V-O nanostructured thin-film materials libraries for photoelectrochemical solar water splitting

机译：Ag-V-O纳米结构薄膜材料文库的高通量表征光电化学太阳能分裂

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摘要

Ag-V-O thin-film materials libraries, with both composition (Ag22-77V23-78Ox) and thickness (123-714 nm) gradients were fabricated using combinatorial reactive magnetron cosputtering aiming on establishing relations between composition, structure, and functional properties. As-deposited libraries were annealed in air at 300 degrees C for 10 h. High-throughput characterization methods of composition, structure and functional properties were used to identify photoelectrochemically active regions. The phases AgV6O15, Ag2V4O11, AgVO3, and Ag4V2O7 were observed throughout the composition gradient. The photoelectrochemical properties of Ag-V-O films are dependent on composition and morphology. An enhanced photocurrent density (similar to 300-554 mu A/cm(2)) was obtained at 30 to 45 at.% Ag along the thickness gradient. Thin films of these compositions show a nanowire morphology, which is an important factor for the enhancement of photoelectrochemical performance. The photoelectrochemically active regions were further investigated by high-throughput synchrotron-X-ray diffraction and transmission electron microscopy (Ag32V68Ox) which confirmed the presence of Ag2V4O33 as the dominating phase along with the minor phases AgV6O38 and AgVO3. This enhanced photoactive region shows bandgap values of similar to 2.30 eV for the direct and similar to 1.87 eV for the indirect bandgap energies. The porous nanostructured films improve charge transport and are hence of interest for photoelectrochemical water splitting. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
机译：使用组合物反应磁控凝固结构制造Ag-V-O薄膜材料文库和厚度（123-714nm）梯度，旨在建立组成，结构和功能性之间的关系。沉积的文库在空气中在300℃下退火10小时。用组合物，结构和功能性的高通量表征方法用于鉴定光电化学活性区域。在整个组合物梯度中观察到相阶段AGV6O15，Ag2V4O11，AGVO3和Ag4V2O7。 Ag-V-O膜的光电化学性质取决于组合物和形态。增强的光电流密度（类似于300-554μA/ cm（2）），在30至45℃下获得。％Ag沿厚度梯度。这些组合物的薄膜显示出纳米线形态，这是增强光电化学性能的重要因素。通过高通量同步调节 - X射线衍射和透射电子显微镜（Ag32V68X）进一步研究了光电化学活性区域，该透射电子显微镜（Ag32V68ox）证实了Ag2V4O33作为主导相以及次次相对于较小相的agv6O38和AGVO3。这种增强的光活性区域显示了类似于2.30eV的带隙值，用于直接和类似于1.87eV用于间接带隙能量。多孔纳米结构薄膜改善电荷传输，因此对光电化学水分裂感兴趣。 （c）2020氢能源出版物LLC。 elsevier有限公司出版。保留所有权利。

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  • 来源
    《International journal of hydrogen energy》 |2020年第21期|12037-12047|共11页
  • 作者

    Kumari Swati; Helt Lukas; Junqueira Joao R. C.; Kostka Aleksander; Zhang Siyuan; Sarker Suchismita; Mehta Apurva; Scheu Christina; Schuhmann Wolfgang; Ludwig Alfred;

  • 作者单位

    Ruhr Univ Bochum Fac Mech Engn Inst Mat Chair Mat Discovery & Interfaces MDI D-44780 Bochum Germany;

    Ruhr Univ Bochum Fac Mech Engn Inst Mat Chair Mat Discovery & Interfaces MDI D-44780 Bochum Germany;

    Ruhr Univ Bochum Fac Chem & Biochem Analyt Chem Ctr Electrochem Sci CES D-44780 Bochum Germany;

    Ruhr Univ Bochum Ctr Interface Dominated High Performance Mat ZGH D-44780 Bochum Germany;

    Max Planck Inst Eisenforsch GmbH Max Planck Str 1 D-40237 Dusseldorf Germany;

    SLAC Natl Accelerator Lab Stanford Synchrotron Radiat Lightsource Menlo Pk CA 94025 USA;

    SLAC Natl Accelerator Lab Stanford Synchrotron Radiat Lightsource Menlo Pk CA 94025 USA;

    Max Planck Inst Eisenforsch GmbH Max Planck Str 1 D-40237 Dusseldorf Germany;

    Ruhr Univ Bochum Fac Chem & Biochem Analyt Chem Ctr Electrochem Sci CES D-44780 Bochum Germany;

    Ruhr Univ Bochum Fac Mech Engn Inst Mat Chair Mat Discovery & Interfaces MDI D-44780 Bochum Germany|Ruhr Univ Bochum Ctr Interface Dominated High Performance Mat ZGH D-44780 Bochum Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Combinatorial synthesis; High-throughput characterization; Nanostructured thin films; Solar water splitting;

    机译：组合合成;高通量表征;纳米结构薄膜;太阳能分裂;

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