多壁碳纳米管对电极染料敏化太阳能电池的制备及电化学性能

以钛酸丁酯为钛源,F：SnO2（FTO）为导电玻璃载体,通过溶胶–凝胶法制备TiO2光阳极;并用3种不同多壁碳纳米管（multi-walled carbon nanotubes,MWCNTs）制备对电极。利用X射线衍射仪和热重–差热分析对TiO2光阳极制备过程中晶体结构和热化学变化进行分析;采用扫描电子显微镜、红外光谱和电化学工作站研究对电极表面形貌、有机基团、催化活性和光敏电池性能。结果表明：在3种不同多壁碳纳米管对电极中,酸处理多壁碳纳米管对电极对I–/I3–氧化还原反应具有很高的催化活性,电池的开路电压、短路电流密度分别达到0.552 V和0.223 mA/cm2,光电转换效率最大为4....

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Bibliographic Details
Published in硅酸盐学报 Vol. 39; no. 11; pp. 1800 - 1805
Main Author 李雷勇 李佑稷 刘建本 陈伟 曾孟雄
Format Journal Article
LanguageChinese
Published 2011
Subjects
多壁碳纳米管
对电极
染料敏化太阳能电池
酸处理
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Summary:以钛酸丁酯为钛源,F：SnO2（FTO）为导电玻璃载体,通过溶胶–凝胶法制备TiO2光阳极;并用3种不同多壁碳纳米管（multi-walled carbon nanotubes,MWCNTs）制备对电极。利用X射线衍射仪和热重–差热分析对TiO2光阳极制备过程中晶体结构和热化学变化进行分析;采用扫描电子显微镜、红外光谱和电化学工作站研究对电极表面形貌、有机基团、催化活性和光敏电池性能。结果表明：在3种不同多壁碳纳米管对电极中,酸处理多壁碳纳米管对电极对I–/I3–氧化还原反应具有很高的催化活性,电池的开路电压、短路电流密度分别达到0.552 V和0.223 mA/cm2,光电转换效率最大为4.10%。另外,其老化速率只有Pt对电极的1/96
Bibliography:The TiO2 photoanode on F：SnO2（FTO） conductive glass was prepared by a sol–gel method,and the counter-electrodes on the FTO conductive glass was prepared with various multi-walled carbon nanotubes（MWCNTs）.The crystal structure and thermal chemical changes of the TiO2 photoanode were analyzed by X-ray diffraction and thermogravimetric–differential thermal analysis.The morphology,organic groups,catalytic activity of counter-electrodes and performance of photosensitive cell were characterized via scanning electron microscope,infrared spectroscopy and electrochemical workstation.The results show the acid-treated MWCNTs counter-electrode has the superior catalytic performance of I–/I3– redox reaction in three kinds of MWCNTs.The open-circuit voltage and short-circuit current density of dye-sensitized solar cells with the acid-treated MWCNTs as counter-electrode were 0.552 V and 0.223 mA/cm2,respectively,and the maximum conversion efficiency was 4.10%.In addition,the aging rate of the acid-treated MWCNTs counter-ele
ISSN:0454-5648