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首页> 外文期刊>International Journal of Electrochemical Science >Influence of Nanomaterial Fillers in Biopolymer Electrolyte System for Squaraine-based Dye-Sensitized Solar Cells
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Influence of Nanomaterial Fillers in Biopolymer Electrolyte System for Squaraine-based Dye-Sensitized Solar Cells

机译：纳米材料填料对基于方型基于染料的染料敏化太阳能电池的生物聚合物电解质体系的影响

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The vast use of fossil fuel demands the development of new sources of renewable energy. Dye- sensitized solar cells (DSSCs) have been extensively studied due to their competitive cost, ease offabrication, high degree of tunability and relatively good-energy conversion efficiencies. Theperformance and stability of DSSCs are limited by leakage and solvent evaporation. This studyexplores the effects of nanofillers in the performance of dye-sensitized solar cells by incorporatingnano-sized titanium dioxide, iron (III) oxide and halloysite fillers into the polymer electrolytes basedon -carrageenan/DMSO/TBAI:I2. Optimization and characterization of various concentrations offillers were done before incorporation in solar cells. The effect of ionic conductivity and diffusioncoefficient to the overall conversion efficiency of the cells were studied. The effect of squaraine dyewas also investigated. The addition of various fillers to the polymer electrolyte system increased thedissociation of iodide ions and improved the ionic conductivity of the cells. The diffusion coefficientof tri-iodide ions was also greatly enhanced because of the increased volume of the system brought- about by reducing polymer-polymer interaction, which increased the mobility of the redox couple (I3 /- I ). DSSC characterization revealed a low efficiency due to a relatively high charge transfer resistancesat the TiO2/dye/electrolyte interface.
机译：化石燃料的广泛使用要求开发新的可再生能源。染料敏化太阳能电池（DSSC）由于其具有竞争力的成本，易于制造，高度可调谐性和相对良好的能量转换效率而被广泛研究。 DSSC的性能和稳定性受到泄漏和溶剂蒸发的限制。这项研究通过将纳米尺寸的二氧化钛，三氧化二铁和埃洛石填充剂掺入基于角叉菜胶/ DMSO / TBAI：I2的聚合物电解质中，探索了纳米填充剂对染料敏化太阳能电池性能的影响。在掺入太阳能电池之前，已对各种浓度的填充剂进行了优化和表征。研究了离子电导率和扩散系数对电池总转化效率的影响。还研究了方酸染料的作用。向聚合物电解质体系中添加各种填料可增加碘离子的离解并改善电池的离子电导率。三碘化物离子的扩散系数也大大提高，这是由于通过减少聚合物与聚合物的相互作用而增加了系统体积，从而增加了氧化还原对的迁移率（I3 /-I）。 DSSC表征显示出较低的效率，这是由于TiO2 /染料/电解质界面处的电荷转移电阻较高。

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