Bi(5)FeTi(3)O(15) nanofibers/graphene nanocomposites as an effective counter electrode for dye-sensitized solar cells

The present study reports Bi(5)FeTi(3)O(15) (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 m...

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Detalles Bibliográficos
Autores principales: Zheng, H. W., Liang, X., Yu, Y. H., Wang, K., Zhang, X. A., Men, B. Q., Diao, C. L., Peng, C. X., Yue, G. T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2017
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5216002/
https://www.ncbi.nlm.nih.gov/pubmed/28058654
http://dx.doi.org/10.1186/s11671-016-1799-5
Descripción
Sumario:The present study reports Bi(5)FeTi(3)O(15) (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%).

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