【作者】 侯文静； 肖尧明； 韩高义；

【Author】 Wenjing Hou;Yaoming Xiao;Gaoyi Han;The Institute of Molecular Science,Shanxi University;

【机构】 山西大学分子科学研究所；

【摘要】 聚吡咯（PPy）易于制备,对I₃^-还原反应有较高的催化活性^[1];而多壁碳纳米管（MWCNT）有较大的比表面积,较好的导电性和良好的力学性能^[2],但MWCNT对于I3-还原反应的催化活性较低。为了进一步提高染料敏化太阳能电池（DSSC）的效率,本文通过循环伏安法在负载有MWCNT的FTO基底上电沉积PPy,制备了PPy/MWCNT的复合对电极。由于PPy/MWCNT结合了PPy较高的催化活性和MWCNT的较大的比表面积和较高的导电性,在一个模拟太阳光下,基于PPy/MWCNT对电极的DSSC获得了7.15%的效率,优于单独PPy（5.72%）和单独MWCNT（1.72%）对电极的电池效率。更多还原

【Abstract】 PPy, on account of easy to fabricate and high catalytic activity for the I₃^– reduction and the MWCNT, due to high surface area, superior conductivity and excellent mechanical strength, have been considered as the most promising CE materials. However, the conversion efficiency of the DSSC based on the MWCNT CE is relatively low due to the poor catalytic activity for I₃^- reduction. To further improve the photoelectric conversion efficiency, we fabricated the PPy/MWCNT CE by a facile cyclic voltammetry method to electro-polymerize the PPy on the MWCNT-coated FTO substrate. Due to the high active surface and facile electron transport from the MWCNT and excellent electrocatalytic activity from the PPy, a high energy conversion efficiency of 7.15% was achieved for the DSSC based on the PPy/MWCNT CE, higher than that of MWCNT（1.72%） and PPy（5.72%） based DSSCs under full sunlight illumination(100 mW cm^-2, AM 1.5 G).更多还原