中文摘要：

通过化学氧化法制备了聚吡咯纳米粒子,并将其与石墨共混旋涂于ITO导电玻璃上,作为染料敏化太阳能电池的对电极.通过SEM观察到聚吡咯纳米粒子粒径在80～100 nm之间,循环伏安测试表明聚吡咯电极对Ⅰ2/Ⅰ-电解质氧化还原体系具有较好的催化能力.光伏电池的电化学交流阻抗测试结果说明掺入石墨后可有效降低聚吡咯对电极的电荷转移阻抗.以钌染料N719为光敏剂,聚吡咯/石墨复合电极为对电极组装成的染料敏化太阳能电池,在AM 1.5（100 mW·cm-2）的模拟太阳光照射下,得到6.01%的光电转换效率,达到相同条件下铂对电极性能的92%.

英文摘要：

Polypyrrole（PPy） nanoparticles were synthesized and mixed with graphite to fabricate PPy/graphite composite counter electrode for dye sensitized solar cells（DSSCs）.The SEM investigation showed that PPy with porous and particle diameter in 80～100 nm is covered on the ITO glass.Cyclic voltammetry（CV） analysis of the PPy electrode exhibited favorable catalytic activity for I2/I-redox reac-tion.The charge-transfer resistance（Rct） of PPy electrode decreased after the addition of graphite.Overall energy conversion efficiency of the DSSCs based on the ruthenium dye（N719） with PPy/graphite composite counter electrode reached 6.01% under simulated AM 1.5 irradiation（100 mW/cm2）,which was 92% of the energy conversion efficiency of the DSSCs with Pt electrode.