文献类型：期刊文献

英文题名：A free radical assisted strategy for preparing ultra-small Pt decorated CNTs as a highly efficient counter electrode for dye-sensitized solar cells

作者：Yang, Xiao Hua[1];Guo, Jian Wei[1];Yang, Shuang[1];Hou, Yu[1];Zhang, Bo[1,3];Yang, Hua Gui[1,2]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]Griffith Univ, Ctr Clean Environm & Energy, Nathan, Qld 4222, Australia;[3]E China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China

年份：2014

卷号：2

期号：3

起止页码：614

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20135117108208);WOS:【SCI-EXPANDED(收录号:WOS:000328644700009)】；

基金：This work was financially supported by National Natural Science Foundation of China (21373083, 21203061), SRF for ROCS, SEM, Programme for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, Major Basic Research Programme of Science and Technology Commission of Shanghai Municipality (10JC1403200), Fundamental Research Funds for the Central Universities (WM1314018, WD1313009, WD1214036), and China Post-doctoral Science Foundation (2012M511056, 2013T60425).

语种：英文

外文关键词：Free radicals - Yarn - Electrochemical electrodes - Multiwalled carbon nanotubes (MWCN)

摘要：In this paper, a free radical assisted strategy was introduced into the functionalization of counter electrodematerials for the first time. With the assistance of a radical initiator, short-chained thiol groups can be attached on a multi-walled carbon nanotube (MWCNT) surface covalently, which was confirmed to be beneficial for both controlling the particle growth of platinum (Pt) on MWCNTs and improving the electron transfer between counter electrode materials and the substrate. The obtained Pt-MWCNT composite has been applied as a counter electrode material for dye-sensitized solar cells, and the power conversion efficiency (eta) was detected to be 8.62%, surpassing that of the cell with a conventional Pt counter electrode (eta = 7.56%). Especially, the fill factor improved considerably from 0.57 to 0.65.