硅酸盐学报2020，Vol.48Issue(4)：483-490,8.DOI:10.14062/j.issn.0454-5648.20190642
基于TiO2/多壁碳纳米管复合光阳极和SnO2/多壁碳纳米管非铂对电极的染料敏化太阳能电池电子传输的改善
Improvement of Electron Transport in Dye-Sensitized Solar Cells Based on TiO2/MWCNTs Composite Films as a Photoanode and SnO2/MWCNTs as a Pt-free Counter Electrode
摘要
Abstract
In order to improve the electron transport rate of TiO2 photoanode, multi-walled carbon nanotubes (MWCNTs) were loaded in TiO2. TiO2/MWCNTs composite sols were formed by a sol-gel hydrothermal method, and the uniform TiO2/MWCNTs composite films were formed by an electro-hydrodynamic method. The films were optimized with TiCl4. The samples were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffractometer and ultraviolet-visible absorption spectroscopy. The photoelectric properties of dye-sensitized solar cells (DSSCs) based on TiO2/MWCNTs composite photoanodes and SnO2/MWCNTs counter electrode were analyzed by electrochemical impedance spectroscopy and current density-voltage curve measurement. The results show that the addition of MWCNTs considerably accelerates the transport of electrons in the films and decreases the recombination of electrons with oxidized dye and I3-; The DSSC with a CNT-0.12 (0.12％, in mass) composite photoanode shows the optimal performance (i.e., Voc=0.70 V, Jsc=13.0 mA/cm2, ηFF=0.64, η=5.80％), and the power conversion efficiency is 30.6％ greater than that of DSSC with a pure TiO2 photoanode (i.e., η=4.44％).关键词
光阳极/多壁碳纳米管/染料敏化太阳能电池/电流体动力学Key words
photoanode/multi-walled carbon nanotubes/dye-sensitized solar cells/electrohydrodynamics分类
信息技术与安全科学引用本文复制引用
刘青龙,王晓宇,赵丽萍,金立国..基于TiO2/多壁碳纳米管复合光阳极和SnO2/多壁碳纳米管非铂对电极的染料敏化太阳能电池电子传输的改善[J].硅酸盐学报,2020,48(4):483-490,8.基金项目
国家自然科学基金(21273060). （21273060）
