An improved preparation of 1-methyl-3-propylimidazolium iodide and its application in dye-sensitized solar cells

详细信息	查看全文 | 推荐本文 |

• 作者：Chengwu Shi ; Qian Ge ; Shikui Han ; Molang Cai ; Songyuan Dai ; Xiaqin Fang ; Xu Pan
• 关键词：1-Methyl-3-propylimidazolium iodide ; Synthesis ; Autoclave ; Dye-sensitized solar cell
• 刊名：Solar Energy
• 出版年：2008
• 期刊代码：80_0038092x
• 类别：ce
• 出版时间：May 2008
• 卷：82
• 期：5
• 页码：385-388
• 文件大小：121 K

摘要

In this paper, we reported an improved preparation of 1-methyl-3-propylimidazolium iodide (MPII), which was the alkylation reaction of n-propyl iodide and 1-methylimidazole under solvent-free conditions by Teflon-lined, stainless autoclaves. It was shown that the resulting MPII was high pure, the conversion rate of 1-methylimidazole was close to 100%and the procedure was simple and eco-friendly. Moreover, the apparent diffusion coefficients of triiodide and iodide in the mixture with different ratios of MPII and 3-methoxypropionitrile were demonstrated by cyclic voltammetry using a Pt ultramicroelectrode. The dye-sensitized solar cells with the electrolyte, which was composed of 0.13 M I₂, 0.10 M LiI, 0.50 M 4-tert-butylpyrdine in the mixture of 3-methoxypropionitrile and MPII (weight ratio 0.65:1), gave short circuit photocurrent density of 14.82 mA/cm², open-circuit voltage of 0.69 V, and fill factor of 0.66, corresponding to the photoelectric conversion efficiency of 6.73%at the illumination (AM 1.5, 100 mW/cm²).