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A facile hydrothemal synthesis of MoS2@Co3S4 composites based on metal organic framework compounds as a high-efficiency liquid-state solar cell counter electrode
Journal of Alloys and Compounds ( IF 6.2 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.jallcom.2020.154910
Shuang’an Liu , Zixiang Li , Kaifeng Zhao , Menghui Hao , Zicai Zhang , Ling Li , Yucang Zhang , Wenming Zhang

Abstract A hollow Co3S4 polyhedral loads MoS2 nanosheet composite MoS2@Co3S4-0.5 is prepared by hydrothermal method using Co-based metal organic framework material ZIF-67 as precursor. Hollow Co3S4 polyhedron and uniformly distributed MoS2 nanosheet structure can not only prevent MoS2 aggregation, but also increase the specific surface area of the material and expose more catalytically active sites. The composites afford a promising synergistic effect on the catalyzing of triiodide reduction. As a counter electrode material applied to dye-sensitized solar cells, MoS2@Co3S4-0.5 exhibits excellent catalytic activity, achieving a photoelectric conversion efficiency of 7.86%, which is superior to 6.99% of Pt counter electrode performance in dye-sensitized solar cells. This indicates that MoS2@Co3S4-0.5 composite material can be used to replace precious metal Pt as an efficient and low-cost counter electrode material in dye-sensitized solar cells.

中文翻译:

基于金属有机骨架化合物的 MoS2@Co3S4 复合材料的简便水热合成作为高效液态太阳能电池对电极

摘要 以钴基金属有机骨架材料ZIF-67为前驱体,采用水热法制备了空心Co3S4多面体负载MoS2纳米片复合材料MoS2@Co3S4-0.5。中空的 Co3S4 多面体和均匀分布的 MoS2 纳米片结构不仅可以防止 MoS2 聚集,还可以增加材料的比表面积并暴露更多的催化活性位点。该复合材料在催化三碘化物还原方面提供了有希望的协同作用。作为应用于染料敏化太阳能电池的对电极材料,MoS2@Co3S4-0.5表现出优异的催化活性,光电转换效率达到7.86%,优于染料敏化太阳能电池中6.99%的Pt对电极性能。这表明 MoS2@Co3S4-0。
更新日期:2020-08-01
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