Issue 32, 2014
From the journal:

Journal of Materials Chemistry A

The working mechanism and performance of polypyrrole as a counter electrode for dye-sensitized solar cells†

Shan Lu,abc   Shasha Wang,a   Ruobing Han,a   Ting Feng,d   Lingju Guo,a   Xuehua Zhang,*a   Dongsheng Liu*c  and  Tao He*a  

* Corresponding authors

a National Center for Nanoscience and Technology, Beijing 100190, China
E-mail: het@nanoctr.cn, zhangxh@nanoctr.cn
Fax: +86 10 6265 6765
Tel: +86 10 8254 5655

b University of the Chinese Academy of Sciences, Beijing 100049, China

c Department of Chemistry, Tsinghua University, Beijing 100084, China

d University of Science and Technology Beijing, Beijing 100083, China

Abstract

Many different materials have been used as alternative counter electrodes (CEs) for dye-sensitized solar cells (DSSCs) mainly due to the high cost of Pt CEs. So far the majority of reported work has focused on the modulation of conductivity and morphology of the CEs. The working mechanism is still unclear, specifically that of the electrocatalysis. Here it is elucidated for the first time by using polypyrrole (PPy) as the target material. The electrocatalysis is mainly comprised of formation of the weakly and strongly bonded iodine species, and formation and reduction of the intermediates. This mechanism may be valid for other CEs too. We envision that this work can help to better understand and optimize the performance of DSSCs fabricated using alternative CEs.

Graphical abstract: The working mechanism and performance of polypyrrole as a counter electrode for dye-sensitized solar cells

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Supplementary files

Article information

DOI
https://doi.org/10.1039/C4TA02193B
Article type
Paper
Submitted
02 May 2014
Accepted
09 Jun 2014
First published
09 Jun 2014

J. Mater. Chem. A, 2014,2, 12805-12811

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The working mechanism and performance of polypyrrole as a counter electrode for dye-sensitized solar cells

S. Lu, S. Wang, R. Han, T. Feng, L. Guo, X. Zhang, D. Liu and T. He, J. Mater. Chem. A, 2014, 2, 12805 DOI: 10.1039/C4TA02193B

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