Abstract
The core-shelled structure nanomaterial is a potential kind of progressive catalysts for the transformation of energy due to their superior catalytic properties, large specific surface, and expedited velocity of electron transport. Meanwhile, the transition metal chalcogenides with complex nanostructures have been considered potential substitutes for highly active and scarce noble metal because of the remarkable electrical and photic catalytic activity. In this study, the Zn0.76Co0.24S nanospheres with different nanostructures were obtained by varying the solvothermal treatment durations. The measurement results exhibited that the as-prepared Zn0.76Co0.24S nanospheres possessed a large surface area (135.7 m2 g−1), better average pore size distribution (9.2 nm), and the excellent conductivity (Rct = 0.24 Ω). Specifically, the photocurrent density versus voltage (J–V) curves demonstrated that a 7.42% power conversion efficiency (PCE) was achieved for the dye-sensitized solar cells (DSSCs) employing Zn0.76Co0.24S as the counter-electrode under a simulated solar light, which is evidently superior to the value of Pt (7.07% PCE) and the value of ZnCo2O4 (4.60% PCE).
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We acknowledge the financial support for this work from the National Key R&D Program of China (2017YFA0403503), National Natural Science Foundation of China (11674001), Key Natural Science Research Program of Anhui Educational Committee (KJ2018ZD001, KJ2013A030).
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Cui, Q., Yang, Q., Wang, W. et al. Controllable synthesize core-shelled Zn0.76Co0.24S nanospheres as the counter-electrode in dye-sensitized solar cells and its enhanced electrocatalytic performance. J Mater Sci: Mater Electron 31, 1797–1807 (2020). https://doi.org/10.1007/s10854-019-02696-w
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DOI: https://doi.org/10.1007/s10854-019-02696-w