A study of TiO2/carbon black composition as counter electrode materials for dye-sensitized solar cells

作者：Lim Jeongmin; Ryu Sang Yeoul; Kim Jeonghun; Jun Yongseok^*

来源：Nanoscale Research Letters, 2013, 8(1): 227.

DOI：10.1186/1556-276X-8-227

• Dye-sensitized solar cells
• Carbon black
• Counter electrode
• Nano composite

This study describes a systematic approach of TiO2/carbon black nanoparticles with respect to the loading amount in order to optimize the catalytic ability of triiodide reduction for dye-sensitized solar cells. In particular, the cell using an optimized TiO2 and carbon black electrode presents an energy conversion efficiency of 7.4% with a 5:1 ratio of a 40-nm TiO2 to carbon black. Based on the electrochemical analysis, the charge-transfer resistance of the carbon counter electrode changed based on the carbon black powder content. Electrochemical impedance spectroscopy and cyclic voltammetry study show lower resistance compared to the Pt counter electrode. The obtained nanostructures and photo electrochemical study were characterized.

• 出版日期2013-5-14