Glucose Aided Preparation of Tungsten Sulfide/Multi-Wall Carbon Nanotube Hybrid and Use as Counter Electrode in Dye-Sensitized Solar Cells

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• 作者：Jihuai Wu ; Gentian Yue ; Yaoming Xiao ; Miaoliang Huang ; Jianming Lin ; Leqing Fan ; Zhang Lan ; Jeng-Yu Lin
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2012
• 出版时间：December 26, 2012
• 年：2012
• 卷：4
• 期：12
• 页码：6530-6536
• 全文大小：438K
• 年卷期：v.4,no.12(December 26, 2012)
• ISSN：1944-8252

文摘

The tungsten sulfide/multi-wall carbon nanotube (WS₂/MWCNT) hybrid was prepared in the presence of glucose by the hydrothermal route. The hybrid materials were used as counter electrode in the dye-sensitized solar cell (DSSC). The results of cyclic voltammetry measurement and electrochemical impedance spectroscopy indicated that the glucose aided prepared (G-A) WS₂/MWCNT electrode had low charge-transfer resistance (R_ct) and high electrocatalytic activity for triiodide reduction. The excellent electrochemical properties for (G-A) WS₂/MWCNT electrode is due to the synergistic effects of WS₂ and MWCNTs, as well as amorphous carbon introduced by glucose. The DSSC based on the G-A WS₂/MWCNT counter electrode achieved a high power conversion efficiency of 7.36%, which is comparable with the performance of the DSSC using Pt counter electrode (7.54%).

Keywords:

tungsten sulfide; multi-wall carbon nanotubes; counter electrode; dye-sensitized solar cells