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- Title
Controllable synthesize core-shelled Zn0.76Co0.24S nanospheres as the counter-electrode in dye-sensitized solar cells and its enhanced electrocatalytic performance.
- Authors
Cui, Qiaoyu; Yang, Qun; Wang, Wen; Yao, Jixin; Liu, Zhongfei; Zuo, Xueqing; Zhu, Kerong; Li, Guang; Jin, Shaowei
- 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).
- Subjects
DYE-sensitized solar cells; TRANSITION metal chalcogenides; PORE size distribution; TRANSITION metal complexes; PHOTOELECTROCHEMISTRY; ELECTRON transport; TRANSITION metals
- Publication
Journal of Materials Science: Materials in Electronics, 2020, Vol 31, Issue 3, p1797
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-019-02696-w