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首页> 外文期刊>Materials Science and Engineering >Quasi-gel-state ionic liquid electrolyte with alkyl-pyrazolium iodide for dye-sensitized solar cells
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Quasi-gel-state ionic liquid electrolyte with alkyl-pyrazolium iodide for dye-sensitized solar cells

机译：烷基吡唑鎓碘化物的准凝胶态离子液体电解质，用于染料敏化太阳能电池

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摘要

A series of non-volatile viscous ionic liquid, 1-alkyl-2-methylpyrazolium iodides (RPyl: R = C_3-C7), were synthesized for the electrolyte of dye-sensitized solar cells (DSSC). Most of RPyl revealed extremely viscous quasi-gel-state electrolytes potentially preventing leakage and evaporation of electrolytes of the solar cells. A DSSC using the electrolyte composed of 1 -hexyl-2-methylpyrazolium iodide (CePyl) with iodine exhibiting higher conversion efficiency of 3.8% (under 1 Sun) for 10% larger short-circuit photocur-rentjsc. than that with a conventional ionic liquid, l-hexyl-3-methyllimidazolium iodide (C_6ImI) with iodine, in spite of less favorable viscosity (2013 mPa s (C_6PyI/I_2) vs. 1439 mPa s (C_6ImI/I_2)) for the physical diffusion of charge carriers in the electrolyte. Furthermore, the quasi-gel-state electrolytes composed of a series of RPyl ionic liquids surprisingly exhibiting comparablejsc to that with much less viscous C_6lmI/I_2. We discuss the results of quasi-gel-state RPyl ionic liquid electrolyte for DSSC based on the Grotthus-like electron exchange mechanism of iodide redox species in the highly viscous RPyl ionic liquid evaluated qualitatively by Raman spectroscopic observation of poly-iodide species.
机译：合成了一系列非挥发性粘性离子液体，碘化1-烷基-2-甲基吡唑鎓盐（RPyl：R = C_3-C7），用于染料敏化太阳能电池（DSSC）的电解质。大部分RPyl揭示了极粘的准凝胶态电解质，有可能防止太阳能电池电解质的泄漏和蒸发。使用由1-己基-2-甲基碘吡唑鎓（CePyl）和碘组成的电解质的DSSC，其短路光固化能力提高了10％，转换效率高达3.8％（在1个阳光下）。与传统的离子液体相比，尽管粘度较差（2013 mPa s（C_6PyI / I_2）与1439 mPa s（C_6ImI / I_2）相比，碘的1-己基-3-甲基咪唑碘鎓碘化物（C_6ImI）与碘较差。电荷载体在电解质中的物理扩散。此外，由一系列RPyl离子液体组成的准凝胶态电解质出人意料地表现出与具有低得多的C_6lmI / I_2粘性的电解质相当的性能。我们通过拉曼光谱法对聚碘物质进行了定性评估，根据高粘性RPyl离子液体中碘化物氧化还原物质的Grotthus类电子交换机理，讨论了DSSC准凝胶态RPyl离子液体电解质的结果。

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  • 来源
    《Materials Science and Engineering》 |2011年第13期|p.996-1001|共6页
  • 作者

    Noriyo Ishimaru; Wataru Kubo; Takayuki Kitamura; Shozo Yanagida; Yasunori Tsukahara; Masato M. Maitani; Yuji Wada;

  • 作者单位

    Graduate School of Engineering, Osaka University. 2-1 Yamada-oka. Suita, Osaka 565-0871, Japan;

    Graduate School of Engineering, Osaka University. 2-1 Yamada-oka. Suita, Osaka 565-0871, Japan;

    Graduate School of Engineering, Osaka University. 2-1 Yamada-oka. Suita, Osaka 565-0871, Japan;

    Center for Advanced Science and Innovation, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan;

    Graduate School of Engineering, Osaka University. 2-1 Yamada-oka. Suita, Osaka 565-0871, Japan;

    Department of Applied Chemistry, Tokyo Institute ofTechnology, 2-12-1, Ookayama, Meguroku, Tokyo 152-8552, Japan;

    Graduate School of Engineering, Osaka University. 2-1 Yamada-oka. Suita, Osaka 565-0871, Japan,Department of Applied Chemistry, Tokyo Institute ofTechnology, 2-12-1, Ookayama, Meguroku, Tokyo 152-8552, Japan;

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  • 关键词

    dye-sensitized solar cell ionic liquid electrolyte poly-iodide grotthus-type diffusion raman spectroscopy;

    机译：染料敏化太阳能电池离子液体电解质聚碘io型扩散拉曼光谱;

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