Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (06): 653-658. Previous Articles     Next Articles

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  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
  • 基金资助:


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

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