Pt/Mesoporous Carbon Counter Electrode with a Low Pt Loading for High-Efficient Dye-Sensitized Solar Cells

被引：1
|
作者：
Wang, Guiqiang [1 ]
Gu, Junfeng [1 ]
Zhuo, Shuping [1 ]
机构：
[1] Shandong Univ Technol, Sch Chem Engn, Zibo 255049, Peoples R China
来源：
INTERNATIONAL JOURNAL OF PHOTOENERGY | 2010年 / 2010卷
基金：
中国国家自然科学基金;
关键词：
PERFORMANCE; ELECTROCATALYST; FABRICATION; REDUCTION; NANOTUBES;
D O I：
10.1155/2010/389182
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Pt/Mesoporous carbon counter electrodes with a low Pt loading for dye-sensitized solar cells were fabricated by coating Pt/mesoporous carbon on fluorine-doped tin oxide glass. Pt/mesoporous carbon samples were prepared by reducing H2PtCl6 with NaBH4 in mesoporous carbon and characterized by N-2 adsorption analysis, X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron microscopy. The Pt particles deposited on mesoporous carbon support were found to be in uniform shape and narrow range of particle size. Low-Pt-loading Pt/mesoporous carbon counter electrode showed a high electrocatalytic activity for triiodide reduction. Electrochemical impedance spectroscopy measurement displayed a low charge-transfer resistance of 1.2 Omega cm(2) for 1-Pt/mesoporous carbon counter electrode. Dye-sensitized solar cells based on the 1-Pt/mesoporous carbon counter electrode achieved an overall conversion efficiency of 6.62% under one sun illumination, which is higher than that of the cell with the conventional Pt counter electrode.
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页数：7
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