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Facile synthesis of Bi2S3-C composite microspheres as low-cost counter electrodes for dye-sensitized solar cells

机译:廉价合成Bi2S3-C复合微球作为染料敏化太阳能电池的低成本对电极

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摘要

Porous bismuth sulfide-carbon (Bi2S3-C) composite microspheres were synthesized via a facile solvothermal route and served as a low-cost counter electrode material for Pt-free dye-sensitized solar cells (DSSCs). The electrochemical performance analysis indicates that the Bi2S3-C electrode has lower charge transfer resistance at the electrolyte/electrode interface, smaller Nernst diffusion impedance of iodide in electrolyte and higher catalytic ability than the bare Bi2S3 electrode. After optimization of the content of carbon, the DSSC with the Bi2S3-C counter electrode exhibited an excellent power conversion efficiency of 6.72%, which is comparable to that of the Pt-based DSSC (6.74%).
机译:多孔的硫化铋碳(Bi2S3-C)复合微球是通过一种容易的溶剂热途径合成的,并用作无Pt染料敏化太阳能电池(DSSC)的低成本对电极材料。电化学性能分析表明,与裸Bi2S3电极相比,Bi2S3-C电极在电解质/电极界面处的电荷转移电阻较低,碘化物在电解质中的能斯特扩散阻抗较小,并且催化能力更高。在优化碳含量之后,带有Bi2S3-C对电极的DSSC表现出6.72%的出色功率转换效率,这与基于Pt的DSSC(6.74%)相当。

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