Chinese Journal of Catalysis ›› 2020, Vol. 41 ›› Issue (3): 435-441.DOI: 10.1016/S1872-2067(19)63493-5

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Selective synthesis of Sb2S3 nanostructures with different morphologies for high performance in dye-sensitized solar cells

Xue Chena, Xuemin Lia, Pengkun Weia, Xiaoyong Mac, Qinlin Yub, Lu Liua   

  1. a Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China;
    b Key Laboratory of Molecular Microbiology and Technology, College of Life Science, Nankai University, Tianjin 300350, China;
    c Shanxi Provincial Research Academy of Environmental Sciences, Taiyuan 030027, Shanxi
  • Received:2019-06-28 Revised:2019-08-23 Online:2020-03-18 Published:2019-11-19
  • Supported by:
    This work was funded by the Tianjin science and technology support key projects (18YFZCSF00500), and the National Science Fund for Distinguished Young Scholars (21425729) from the National Natural Science Foundation of China.

Abstract: In this work, we initially synthesized Sb2S3 with uniform flower-like structures via a facile hydrothermal method through the modification of the Sb source and pH value. Afterward, Sb2S3 with a nanosheet structure was successfully synthesized on reduced graphene oxide (Sb2S3@RGO). The flower-like Sb2S3 and the Sb2S3@RGO nanosheets were tested as the counter electrode (CE) of dye-sensitized solar cells, and the latter exhibited a higher electrocatalytic property than the former owing to the introduction of graphene. The results from electrochemical tests indicated that the as-prepared Sb2S3@RGO nanosheets possess higher catalytic activity, charge-transfer ability, and electrochemical stability than Sb2S3, RGO, and Pt CEs. More notably, the power conversion efficiency of Sb2S3@RGO reached 8.17%, which was higher than that of the standard Pt CE (7.75%).

 

Key words: Sb2S3, Reduced graphene oxide, Counter electrode, Dye-sensitized cells, Power conversion efficiency

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