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化学学报
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化学学报 ›› 2011, Vol. 69 ›› Issue (06): 653-658. 上一篇    下一篇

研究论文

聚吡咯/石墨复合对电极在染料敏化太阳能电池中的应用研究

冯小明1，黄先威1，谭卓1，赵斌1,2，谭松庭*,1,2   

  1. (1湘潭大学化学学院 教育部环境友好化学与应用重点实验室 湘潭 411105)
    (2湖南省高校先进功能高分子材料重点实验室 湘潭 411105)
  • 投稿日期:2010-06-28 修回日期:2010-09-01 发布日期:2010-11-24
  • 通讯作者: 谭松庭 E-mail:Tanst2008@163.com
  • 基金资助:

    新型染料敏化网状二氧化钛纳米纤维微孔膜太阳能电池

Application Research of Polypyrrole/Graphite Composite Counter Electrode for Dye-Sensitized Solar Cells

Feng Xiaoming1 Huang Xianwei1 Tan Zhuo1 Zhao Bin1,2 Tan Songting*,1,2   

  1. (1 College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan 411105)
    (2 Key Laboratory of Advanced Functional Polymeric Materials of College of Hunan Province, Xiangtan University, Xiangtan 411105)
  • Received:2010-06-28 Revised:2010-09-01 Published:2010-11-24

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1731

被引次数

29

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%.

关键词: 染料敏化太阳能电池, 对电极, 聚吡咯, 石墨

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 reaction. 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.

Key words: dye sensitized solar cells, counter electrode, polypyrrole, graphite