Hierarchical Porous Carbon Counter Electrode for Dye-Sensitized Solar Cells  

作　　者：WANG Gui-Qiang HUANG Cong-Cong XING Wei ZHUO Shu-Ping 王桂强;黄从从;邢伟;禚淑萍(College of Chemical Engineering,Shandong University of Technology,Zibo 255049)

机构地区：[1]College of Chemical Engineering,Shandong University of Technology,Zibo 255049

出　　处：《Chinese Physics Letters》2011年第3期224-227,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 20773082;Shandong Natural Science Foundation under Grant No ZR2010BM038.

摘　　要：Hierarchical porous carbon is prepared by a combination of self-organization and chemical activation and explored as counter electrode for dye-sensitized solar cells.Pore structure analysis shows that micropores generated within the mesopore wall and the pristine mesopore structure of mesoporous carbon are preserved during KOH activation.Electrochemical impedance spectroscopy studies demonstrate a relatively high electrocatalytic activity of hierarchical porous carbon electrode for triiodide reduction,as compared with a pristine mesoporous carbon electrode.This enhanced electrocatalytic activity is beneficial for improving the photovoltaic performance of dyesensitized solar cells.The overall conversion efficiency of dye-sensitized solar cells with the hierarchical porous carbon electrode increased by 11.5%compared with that of the cell with a pristine mesoporous carbon electrode.

关 键 词：ELECTRODE SOLAR DYE 

分 类 号：X70[环境科学与工程—环境工程]