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首页> 美国卫生研究院文献>Scientific Reports >Fullerene-Structured MoSe2 Hollow Spheres Anchored on Highly Nitrogen-Doped Graphene as a Conductive Catalyst for Photovoltaic Applications
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Fullerene-Structured MoSe2 Hollow Spheres Anchored on Highly Nitrogen-Doped Graphene as a Conductive Catalyst for Photovoltaic Applications

机译：富勒烯结构的MoSe2空心球锚固在高氮掺杂石墨烯上作为光伏应用的导电催化剂

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摘要

A conductive catalyst composed of fullerene-structured MoSe2 hollow spheres and highly nitrogen-doped graphene (HNG-MoSe2) was successfully synthesized via a wet chemical process. The small molecule diethylenetriamine, which was used during the process, served as a surfactant to stabilize the fullerene-structured MoSe2 hollow spheres and to provide a high content of nitrogen heteroatoms for graphene doping (ca. 12% N). The superior synergistic effect between the highly nitrogen-doped graphene and the high surface-to-volume ratio MoSe2 hollow spheres afforded the HNG-MoSe2 composite high conductivity and excellent catalytic activity as demonstrated by cyclic voltammetry, electrochemical impedance spectroscopy and Tafel measurements. A dye-sensitized solar cell (DSSC) prepared with HNG-MoSe2 as a counter electrode exhibited a conversion efficiency of 10.01%, which was close to that of a DSSC with a Pt counter electrode (10.55%). The synergy between the composite materials and the resulting highly efficient catalysis provide benchmarks for preparing well-defined, graphene-based conductive catalysts for clean and sustainable energy production.
机译：通过湿化学法成功地合成了由富勒烯结构的MoSe2空心球和高氮掺杂石墨烯（HNG-MoSe2）组成的导电催化剂。在此过程中使用的小分子二亚乙基三胺用作表面活性剂，可稳定富勒烯结构的MoSe2空心球，并为石墨烯掺杂提供高含量的氮杂原子（约12％N）。如循环伏安法，电化学阻抗谱和Tafel测量所证明的那样，高氮掺杂石墨烯与高表面体积比的MoSe2中空球之间的优异协同作用使HNG-MoSe2复合材料具有高电导率和出色的催化活性。以HNG-MoSe2为反电极制备的染料敏化太阳能电池（DSSC）的转化效率为10.01％，接近具有Pt对电极的DSSC的转化效率（10.55％）。复合材料之间的协同作用以及所产生的高效催化作用为制备清晰，基于石墨烯的导电催化剂提供了基准，以用于清洁和可持续的能源生产。

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