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Bi5FeTi3O15 nanofibers/graphene nanocomposites as an effective counter electrode for dye-sensitized solar cells
2019/11/27 21:19:38 Zheng, H. W., X. Liang, Y. H. Yu, K. Wang, X. A. Zhang, B. Q. Men, C. L. Diao, C. X. Peng and G. T. Yue
The present study reports Bi5FeTi3O15 (BFTO) nanofibers/graphene (Gr) nanocomposites (BGr) as counter electrodes (CEs) in dye-sensitized solar cells (DSSCs). BFTO nanofibers with diameters of 40-100 nm were fabricated by sol-gel based electrospinning technique. The microstructure and surface morphology of the BFTO nanofibers and the BGr nanocomposites were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The electrochemical performances of BGr CEs were comprehensively characterized and investigated. Compared to pristine BFTO, the nanocomposites have a marked improvement in electrocatalytic performance for the reduction of triiodide because of larger surface area and lower transfer resistance on the electrolyte-electrode interface. The maximum power conversion efficiency has reached 9.56%, which is much larger than that of pure BFTO CEs (0.22%).
  • Journal: Nanoscale Research Letters
  • Volume: 12
  • Issue:
  • Pages:
  • ISSN: 1556-276X
  • DOI: 10.1186/s11671-016-1799-5
  • Year: 2017
  • Number:
  • Type:
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