文献类型：期刊文献

英文题名：Enhancement of the efficiency of dye-sensitized solar cell with multi-wall carbon nanotubes/polypyrrole composite counter electrodes prepared by electrophoresis/electrochemical polymerization

作者：Luo, Jun[1];Niu, Hai-jun[1];Wen, Hai-lin[1];Wu, Wen-jun[2,3];Zhao, Ping[2,3];Wang, Cheng[1];Bai, Xu-duo[1];Wang, Wen[4]

机构：[1]Heilongjiang Univ, Minist Educ, Dept Macromol Mat & Engn, Key Lab Funct Inorgan Mat Chem, Harbin 150086, Peoples R China;[2]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[4]Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150080, Peoples R China

年份：2013

卷号：48

期号：3

起止页码：988

外文期刊名：MATERIALS RESEARCH BULLETIN

收录：;EI(收录号：20130515963948);WOS:【SCI-EXPANDED(收录号:WOS:000315608400011)】；

基金：The authors gratefully acknowledge the financial support of the National Science Foundation of China (No. 21074031), the Heilongjiang Educational Bureau Foundation, the Supporting Program of Innovation Teams of HLJU (hdtd2010-11) and Heilongjiang University Funds for Distinguished Young Teachers.

语种：英文

外文关键词：Composites; Thin films; Atomic force microscopy; Electrochemical measurements; Impedance spectroscopy

摘要：For the purpose of replacing the precious Pt counter electrode in dye-sensitized solar cells (DSSCs) with higher energy conversion efficiency, multi-wall carbon nanotube (MWCNT)/polypyrrole (PPy) double layers film counter electrode (CE) was fabricated by electrophoresis and cyclic voltammetry (CV) layer by layer. Atom force microscopy (AFM), scanning electron microscopy (SEM) and transmission electron microscope (TEM) demonstrated the morphologies of the composite electrode and Raman spectroscopy verified the PPy had come into being. The overall energy conversion efficiency of the DSSC employing the MWCNT/PPy CE reached 3.78%. Compared with a reference DSSC using single MWCNT film CE with efficiency of 2.68%, the energy conversion efficiency was increased by 41.04%. The result of impedance showed that the charge transfer resistance R-ct of the MWCNT/PPy CE had the lowest value compared to that of MWCNT or PPy electrode. These results indicate that the composite film with high conductivity, high active surface area, and good catalytic properties for 13 reduction can potentially be used as the CE in a high-performance DSSC. (C) 2012 Elsevier Ltd. All rights reserved.