期刊
JOURNAL OF POWER SOURCES
卷 417, 期 -, 页码 21-28出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2019.02.008
关键词
CoMoSx@Ni-CoMoSx; Transition metal sulfide; Double-shelled cage-in-cage structure; Photovoltaic performance; Counter electrode; Dye-sensitized solar cell
资金
- National Natural Science Foundation of China [21702031, 21676057]
- Project of Education Department of Fujian Province [JK2017004]
- Natural Science Foundation of Fujian Province [2018J01692]
- Hong Kong Scholars Program [XJ2018023]
Double-shelled hollow structures possess unique properties in energy conversion/storage fields due to their higher surface area, larger contact region with the electrolyte and much shortened paths of charge transfer. In this work, CoMoSx@Ni-CoMoSx hollow polyhedron catalyst with a double-shelled cage-in-cage structure is prepared by a sequence of template-engaged synthetic processes. In the synthetic procedure, (NH4)(2)MoS4 is applied as a multifunctional vulcanizator, which can conveniently afford Mo and S elements at the same time. Noteworthily, by comparing with single-shelled hollow CoMoSx and Ni-CoMoSx polyhedrons, the double-shelled CoMoSx@Ni-CoMoSx polyhedron catalyst demonstrates superior catalytic properties in the reduction of triiodide in dye-sensitized solar cells. The solar cell with CoMoSx@Ni-CoMoSx based counter electrode exhibits a high power conversion efficiency of 9.30%, which is much higher than that of Pt (8.01%).
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