A novel synthesis of CNTs/TiO₂ nanocomposites with enhanced performance as photoanode of solar cell

详细信息    查看全文

• 作者：Miao Zhang ; Naiqin Zhao ; Wei Li ; Chunnian He ; Jiajun Li ; Chunsheng Shi ; Enzuo Liu
• 关键词：Carbon nanotubes ; Nanocomposites ; Electrodeposition ; Microstructure ; Energy storage and conversion
• 刊名：Materials Letters
• 出版年：2013
• 出版时间：15 October, 2013
• 年：2013
• 卷：109
• 期：Complete
• 页码：240-242
• 全文大小：1204 K

文摘

TiO₂ nanoparticles are widely used in dye-sensitized solar cells (DSSCs). The combination of one-dimensional materials such as carbon nanotubes (CNTs) with TiO₂ nanocrystals by mechanical mixing has been expected to improve the electron transport of anode. However, these methods cannot ensure the connection between one-dimensional materials and collector, which is the key for exerting the fast electron transport property. In this study, a novel synthesis method named gel chapping for CNTs/TiO₂ nanocomposites preparation is presented, in which porous nanocrystalline TiO₂ film with through-hole cracks is fabricated. By using the porous films with cracks as templates, CNTs are deposited in pores and well connected with the template and current collector which favors the transportation of electrons. The current-voltage curve test reveals that the conversion efficiency of CNTs/TiO₂ nanocrystalline composite structures is 2.6 times superior to TiO₂ nanocrystalline film.