A novel strategy to prepare a Pt-SnO2 nanocomposite as a highly efficient counter electrode for dye-sensitized solar cells

被引：26
作者：
Chen, Xiao [1 ]
Hou, Yu [1 ]
Yang, Shuang [1 ]
Yang, Xiao Hua [1 ]
Yang, Hua Gui [1 ,2 ]
机构：
[1] E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China
[2] Griffith Univ, Ctr Clean Environm & Energy, Nathan, Qld 4222, Australia
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2014年 / 2卷 / 41期
基金：
中国国家自然科学基金;
关键词：
LOW-COST; TRIIODIDE REDUCTION; CATALYTIC-ACTIVITY; PERFORMANCE; NANOCRYSTALS;
D O I：
10.1039/c4ta03774j
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：
A novel strategy was introduced to prepare a Pt-SnO2 nanocomposite, in which the reduction of Pt4+ and the exfoliation of SnS2 were performed in one step. The Pt-SnO2 nanocomposite was applied as the counter electrode (CE) for dye-sensitized solar cells (DSCs). When compared with the energy conversion efficiency (E-ff) of SnO2 CE based DSCs, the DSCs with Pt-SnO2 CE showed an overall E-ff of 8.83%, giving an improvement of 198%. Meanwhile, better electrocatalytic activity towards I-3/I redox pairs than Pt CE indicated that the Pt-SnO2 nanocomposite was a promising electrocatalyst for DSCs. Moreover, the low Pt content of the Pt-SnO2 nanocomposite would accelerate the large-scale applications of DSCs in the future.
引用
收藏
页码：17253 / 17257
页数：5
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