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

被引：28

作者：

Lu, Shan ^{[1
,2
,3
]}

Wang, Shasha ^{[1
]}

Han, Ruobing ^{[1
]}

Feng, Ting ^{[4
]}

Guo, Lingju ^{[1
]}

Zhang, Xuehua ^{[1
]}

Liu, Dongsheng ^{[3
]}

He, Tao ^{[1
]}

机构：

[1] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

[4] Univ Sci & Technol Beijing, Beijing 100083, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2014年 / 2卷 / 32期

基金：

中国国家自然科学基金;

关键词：

LOW-COST; GRAPHENE; REDUCTION; PLATINUM;

D O I：

10.1039/c4ta02193b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：12805 / 12811

页数：7

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