Journal of Inorganic Materials ›› 2011, Vol. 26 ›› Issue (11): 1136-1140.DOI: 10.3724/SP.J.1077.2011.01136

• Research Paper • Previous Articles     Next Articles

Preparation and Property of Hierarchical Porous Carbon Counter Electrode for Dye-sensitized Solar Cells

WANG Gui-Qiang, HUANG Cong-Cong, XIN Wei, ZHUO Shu-Ping   

  1. (College of Chemical Engineering, Shandong University of Technology, Zibo 255049, China)
  • Published:2011-11-20 Online:2011-11-11
  • Supported by:

    National Natural Science Foundation of China (20773082); Natural Science Foundation of Shandong Province (ZR2010BM038)

Abstract: Hierarchical porous carbon (HPC) was prepared by the combination of self-assembly and post activation. The analysis of N2 adsorption isotherm for carbon samples indicated that large quantities of micropores were generated within the mesopore wall of mesoporous carbon. HPC electrode exhibited high electrocatalytic activity for I3- reduction due to its high surface area and unique hierarchical porous structure. Electrochemical impedance spectroscopy measurement indicated that the charge-transfer resistance of HPC electrode was 0.3 Ω·cm2. The short-circuit current density, the open-circuit voltage and the fill factor of dye-sensitized solar cell with HPC counter electrode were 0.624 V, 15.44 mA/cm2 and 0.67, respectively. The overall conversion efficiency of the dye-sensitized solar cell with HPC counter electrode is 6.48%, which is 11.5% higher than that of the cell with mesoporous carbon counter electrode.

Key words: hierarchical porous carbon, counter electrode, dye-sensitized solar cell

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