• 文献标题:   Bi5FeTi3O15 nanofibers/graphene nanocomposites as an effective counter electrode for dye-sensitized solar cells
  • 文献类型:   Article
  • 作  者:   ZHENG HW, LIANG X, YU YH, WANG K, ZHANG XA, MEN BQ, DIAO CL, PENG CX, YUE GT
  • 作者关键词:   bi5feti3o15, graphene, nanocomposite, counter electrode, dyesensitized solar cell
  • 出版物名称:   NANOSCALE RESEARCH LETTERS
  • ISSN:   1931-7573 EI 1556-276X
  • 通讯作者地址:   Henan Univ
  • 被引频次:   8
  • DOI:   10.1186/s11671-016-1799-5
  • 出版年:   2017

▎ 摘  要

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%).