Enhanced Electrocatalytic Activity by RGO/MWCNTs/NiO Counter Electrode for Dye-sensitized Solar Cells  

作　　者：Majid Raissan Al-bahrani Waqar Ahmad Hadja Fatima Mehnane Ying Chen Ze Cheng Yihua Gao 

机构地区：[1]Center for Nanoscale Characterization & Devices, Wuhan National Laboratory for Optoelectronics, School of Physics,Huazhong University of Science and Technology [2]Faculty of Science, Thi-Qar University [3]School of Physics and Technology and Key Laboratory of Artificial Micro- and Nano-structure of Ministry of Education,Wuhan University [4]School of Physics, Huazhong University of Science and Technology

出　　处：《Nano-Micro Letters》2015年第3期298-306,共9页纳微快报（英文版）

基　　金：supported by the National Basic Research Program(2011CB933300)of China;the National Natural Science Foundation of China(11374110,11204093,51371085,and 11304106)

摘　　要：We applied the reduced graphene oxide/multi-walled carbon nanotubes/nickel oxide(RGO/MWCNTs/Ni O)nanocomposite as the counter electrode(CE) in dye-sensitized solar cells(DSSCs) on fluorine-doped tin oxide substrates by blade doctor method. Power conversion efficiency(PCE) of 8.13 % was achieved for this DSSCs device, which is higher than that of DSSCs devices using Ni O, RGO, and RGO/Ni O-CE(PCE = 2.71 %, PCE = 6.77 % and PCE = 7.63 %). Also, the fill factor of the DSSCs devices using the RGO/MWCNTs/Ni O-CE was better than that of other CEs. The electron transfer measurement of cyclic voltammetry and electrochemical impedance spectroscopy showed that RGO/MWCNTs/Ni O film could provide fast electron transfer between the CE and the electrolyte, and high electrocatalytic activity for the reduction of triiodide in a CE based on RGO/MWCNTs/Ni O in a DSSC.We applied the reduced graphene oxide/multi-walled carbon nanotubes/nickel oxide (RGO/MWCNTs/NiO) nanocomposite as the counter electrode (CE) in dye-sensitized solar cells (DSSCs) on fluorine-doped tin oxide substrates by blade doctor method. Power conversion efficiency (PCE) of 8.13 % was achieved for this DSSCs device, which is higher than that of DSSCs devices using NiO, RGO, and RGO/NiO-CE (PCE = 2.71 %, PCE = 6.77 % and PCE = 7.63 %). Also, the fill factor of the DSSCs devices using the RGO/MWCNTs/NiO-CE was better than that of other CEs. The electron transfer measurement of cyclic voltammetry and electrochemical impedance spectroscopy showed that RGO/MWCNTs/NiO film could provide fast electron transfer between the CE and the electrolyte, and high electrocatalytic activity for the reduction of triiodide in a CE based on RGO/MWCNTs/NiO in a DSSC.

关 键 词：Graphene oxide Carbon nanotubes Nickel oxide Counter electrode Dye-sensitized solar cells 

分 类 号：TB33[一般工业技术—材料科学与工程] TM914.4[电气工程—电力电子与电力传动]