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

Jeongmin Lim; Sang Yeoul Ryu; Jeonghun Kim; Yongseok Jun

doi:10.1186/1556-276X-8-227

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

Jeongmin Lim, Sang Yeoul Ryu, Jeonghun Kim, Yongseok Jun

Research output: Contribution to journal › Article › peer-review

63 Citations (Scopus)

Abstract

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 TiO₂and carbon black electrode presents an energy conversion efficiency of 7.4% with a 5:1 ratio of a 40-nm TiO₂to 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.

Original language	English
Article number	227
Pages (from-to)	1-5
Number of pages	5
Journal	Nanoscale Research Letters
Volume	8
Issue number	1
DOIs	https://doi.org/10.1186/1556-276X-8-227
Publication status	Published - 2013
Externally published	Yes

Bibliographical note

Funding Information:
This work was financially supported by the MEST and KETEP (MKE) grants (2012 K001288, 20120009633, and 20114030200010).

Keywords

Carbon black
Counter electrode
Dye-sensitized solar cells
Nano composite

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

Access to Document

10.1186/1556-276X-8-227

Cite this

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abstract = "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 TiO2and carbon black electrode presents an energy conversion efficiency of 7.4% with a 5:1 ratio of a 40-nm TiO2to 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.",

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AB - 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 TiO2and carbon black electrode presents an energy conversion efficiency of 7.4% with a 5:1 ratio of a 40-nm TiO2to 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.

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