期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 22, 期 34, 页码 18018-18024出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm33273f
关键词
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资金
- Natural Science Foundation of China [20974072, 21174102]
- Natural Science Foundation of Jiangsu Province [BK2011274]
- Research Fund for the Doctoral Program of Higher Education [20103201110003]
- Jiangsu Higher Education Institutions
Bis-imidazolium based poly(ionic liquid), poly(1-butyl-3-(1-vinylimidazolium-3-hexyl)-imidazolium bis(trifluoromethanesulfonyl)imide) (Poly[BVIm][HIm][TFSI]) and mono-imidazolium based poly(ionic liquid), poly(1-butyl-3-vinylimidazolium bis(trifluoromethanesulfonyl) imide) (Poly[BVIm] [TFSI]), were synthesized and dissolved in room temperature ionic liquids (ILs) to form quasi-solid-state electrolytes for dye-sensitized solar cells (DSSCs), without using any volatile organic solvent. Compared with mono-imidazolium based poly[BVIm][TFSI], bis-imidazolium based poly[BVIm][HIm][TFSI] electrolytes showed a higher thermal stability and conductivity due to the charge transport networks formed in the gel electrolytes via the pi-pi stacked imidazolium rings. The DSSCs based on the poly[BVIm][HIm][TFSI] gel electrolyte showed a superior long-term stability and yielded a power conversion efficiency of 5.92% under the simulated air mass 1.5 solar spectrum illumination at 100 mW cm(-2). This study offered a feasible method to fabricate quasi-solid-state DSSCs in future practical applications.
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