文献类型：期刊文献

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

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

年份：2014

卷号：2

期号：41

起止页码：17253

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20144200096098);WOS:【SCI-EXPANDED(收录号:WOS:000342763300004)】；

基金：This work was financially supported by the National Natural Science Foundation of China (21373083, 21203061), SRF for ROCS, SEM, SRFDP, Programme for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, Fundamental Research Funds for the Central Universities (WD1313009, WD1214036), and China Post-doctoral Science Foundation (2013T60425).

语种：英文

外文关键词：Platinum - Nanocomposites - Electrodes - Energy conversion efficiency - Electrocatalysts - IV-VI semiconductors - Semiconducting tin compounds

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.