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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >An in situ combustion method for scale-up fabrication of BiVO4 photoanodes with enhanced long-term photostability for unassisted solar water splitting
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An in situ combustion method for scale-up fabrication of BiVO4 photoanodes with enhanced long-term photostability for unassisted solar water splitting

机译：一种用于比例制造BIVO4光耦合的原位燃烧方法，具有增强的长期光稳定性，用于无统治太阳能水分裂

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The development of large-area, low-cost photoanodes with high efficiency and photostability is pivotal for the commercialization of photoelectrochemical (PEC) water splitting. Here, an in situ combustion process is reported as a new route to the solution growth of bismuth vanadate (BiVO4) photoanodes. The highly exothermal in situ combustion process ignites rapid solvent evaporation and promotes the homogeneous distribution of BiVO4 on large-size conductive substrates. Also, the released thermal energy builds tight connection between the BiVO4 films and the conductive substrates, which suppresses the cathodic photocorrosion and shows unexpected high photocurrent density and ultralong photostability. The as-formed photoanodes can continuously work for sulfite oxidation under consecutive AM 1.5G illumination for similar to 190 h with no decay, and for water oxidation for similar to 135 h with similar to 20% performance decay compared with the initial value. Such a high photostability toward water oxidation has not been reported for large-size BiVO4 photoanodes previously. A PEC-PV device is fabricated by assembling 9 pieces of combustion-processed large size (25 cm(2)) BiVO4 photoanodes for unassisted solar water splitting. The as-assembled device shows a stable photocurrent of up to 0.26 A even after working for 40 sunny days under real solar light irradiation (1 h for each day). Such a facile in situ solution combustion method is promising for scale-up fabrication of large size BiVO4 photoanodes, and it can also potentially be implemented to fabricate other types of photoelectrodes on conductive substrates and promote their large-scale deployment.
机译：具有高效率和光稳定性的大面积，低成本光桥的开发是光电化学（PEC）水分裂的商业化的关键。这里，据原位燃烧过程报告为溶液钒酸盐（BIVO4）光桥溶液生长的新途径。高度放热原位燃烧过程可点燃溶剂蒸发的快速蒸发，并促进BIVO4对大型导电基材的均匀分布。而且，释放的热能在Bivo4膜和导电基板之间构建紧密连接，这抑制了阴极光腐蚀，并显示出意想不到的高光电流密度和超响光稳定性。由于初始值与初始值相比，AM 1.5G的照明，以与衰减相似的190小时，形成的光阳极可以连续地用于亚硫酸盐氧化。与初始值相似的水氧化，与初始值相比类似于20％性能衰减的水氧化。对于先前的大尺寸BIVO4光阳极尚未报道这种高光稳定性朝向水氧化。 PEC-PV器件通过组装9件燃烧加工的大尺寸（25cm（2））BIVO4光电池来制造，用于无统治太阳能水分裂。诸如在真正的太阳光照射下工作40次阳光晴天，竣工装置显示出高达0.26A的稳定光电流（每天1小时）。这种容易原位溶液燃烧方法是对大尺寸Bivo4光桥的放大制造的承诺，并且还可以实现以制造在导电基板上的其他类型的光电系制并促进其大规模展开。

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    Qayum Abdul; Guo Mingrui; Wei Jing; Dong Shun; Jiao Xiuling; Chen Dairong; Wang Ting;

  • 作者单位

    Shandong Univ Natl Engn Res Ctr Colloidal Mat Sch Chem &

    Chem Engn Jinan 250100 Peoples R China;

    Shandong Univ Natl Engn Res Ctr Colloidal Mat Sch Chem &

    Chem Engn Jinan 250100 Peoples R China;

    Shandong Univ Natl Engn Res Ctr Colloidal Mat Sch Chem &

    Chem Engn Jinan 250100 Peoples R China;

    Shandong Univ Natl Engn Res Ctr Colloidal Mat Sch Chem &

    Chem Engn Jinan 250100 Peoples R China;

    Shandong Univ Natl Engn Res Ctr Colloidal Mat Sch Chem &

    Chem Engn Jinan 250100 Peoples R China;

    Shandong Univ Natl Engn Res Ctr Colloidal Mat Sch Chem &

    Chem Engn Jinan 250100 Peoples R China;

    Shandong Univ Natl Engn Res Ctr Colloidal Mat Sch Chem &

    Chem Engn Jinan 250100 Peoples R China;

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  • 正文语种 eng
  • 中图分类 工程材料学;
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