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首页> 外文期刊>International Journal of Electrochemical Science >Ether-Functionalized Pyrazolium Ionic Liquids as Electrolytes for Dye Sensitized Solar Cells
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Ether-Functionalized Pyrazolium Ionic Liquids as Electrolytes for Dye Sensitized Solar Cells

机译：以醚官能化的吡唑鎓离子液体作为染料敏化太阳能电池的电解质

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摘要

Two ether-functionalized ionic liquids (ILs) based on pyrazolium cations and- bis(trifluoromethylsulfonyl)imide anions (TFSI ) as solvent and pyrazolium iodide as iodide sourcewere first time fabricated for dye sensitized solar cells (DSSCs). The I-V characteristic curves,electrochemical impedance spectroscopy (EIS) and linear sweep voltammetry (LSV) demonstrated theperformance of functionalized ILs as well as the performance of dye sensitized solar cells with thechange of the concentration of iodide and iodine. It was confirmed by EIS that mass-transportlimitation becoming less of a problem in the 1-(2-Methoxyethyl)-2-ethylpyrazolium (OEPZ)-based and1-(2-Methoxyethyl)-2-methylpyrazolium (OMPZ)-based electrolytes. A maximum of 1.7% efficiency2 was obtained with the observed photo-voltage of 0.557V and photocurrent density of 6.3mA/cm usingthe electrolyte concentration of 0.1M I2 and 1M OEPZ-iodide in OEPZ-TFSI for fabrication of the2 solar cell without additives at 100mW/cm . The DSSC based on OMPZ electrolyte exhibited lowerefficiency due to large resistances.
机译：首次为染料敏化太阳能电池（DSSC）制备了两种基于吡唑鎓阳离子和以双（三氟甲基磺酰基）酰亚胺阴离子（TFSI）为溶剂和吡唑鎓碘化物作为碘化物源的醚官能化离子液体（ILs）。 I-V特性曲线，电化学阻抗谱（EIS）和线性扫描伏安法（LSV）证明了随着碘化物和碘浓度的变化，功能化IL的性能以及染料敏化太阳能电池的性能。通过EIS证实，在基于1-（2-甲氧基乙基）-2-乙基吡唑鎓（OEPZ）的和基于1-（2-甲氧基乙基）-2-甲基吡唑鎓（OMPZ）的电解质中，传质限制不再是问题。在OEPZ-TFSI中使用0.1M I2和1M OEPZ-碘化物的电解质浓度制造无添加剂的2太阳能电池时，观察到的0.557V的光电压和6.3mA / cm的光电流密度获得了最高1.7％的效率2。 100mW / cm 2。由于电阻大，基于OMPZ电解质的DSSC效率较低。

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