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 gener-ated 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 spec-troscopy measurement indicated that the charge-transfer resistance of HPC electrode was 0.3 ?.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.
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