Journal
CARBON
Volume 55, Issue -, Pages 1-9Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2012.10.045
Keywords
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Funding
- National High Technology Research and Development Program of China [2009AA03Z217]
- National Natural Science Foundation of China [U1205112]
- Science Council in Taiwan [NSC-100-2221-E-036-022]
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Multi-wall carbon nanotubes decorated with tungsten sulfide (MWCNTs-WS2) were synthesized by using a hydrothermal method, and used as a low-cost platinum-free counter electrode for dye-sensitized solar cell (DSSC). Cyclic voltammetry and electrochemical impedance spectroscopy characterizations indicate that the counter electrode has a high catalytic activity for the reduction of triiodide to iodide and a low charge transfer resistance at the electrolyte-electrode interface. A DSSC based on this counter electrode achieves a high power conversion efficiency of 6.41% under a simulated solar illumination of 100 mW cm(-2) (AM 1.5). This efficiency is comparable to 6.56% for a DSSC with Pt counter electrode. (C) 2012 Elsevier Ltd. All rights reserved.
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