Issue 28, 2012
From the journal:

Journal of Materials Chemistry

Pt-NP–MWNT nanohybrid as a robust and low-cost counter electrode material for dye-sensitized solar cells†

Van-Duong Dao,a   Seung Hyeon Ko,bc   Ho-Suk Choi*ad  and  Joong-Kee Leed  

* Corresponding authors

a Department of Chemical Engineering, Chungnam National University, 220 Gung-Dong, Yuseong-Gu, Daejoen 305-764, Korea
E-mail: hchoi@cnu.ac.kr
Fax: +82-42-822-8995
Tel: +82-42-821-5689

b Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA

c Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742, USA

d Energy Storage Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650, Korea

Abstract

Pt-NPs hybridized inside and outside multi-walled carbon nanotubes (MWNTs) were successfully synthesized using a liquid plasma system with 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide under atmospheric pressure. The Pt-NPs with a size of 3–4 nm were stably and uniformly hybridized on both inner and outer surfaces of the MWNTs. The nanohybrid materials were applied to the counter electrode of dye-sensitized solar cells (DSCs). Electrochemical impedance measurement of DSCs revealed that the charge-transfer resistance of a MWNT–Pt nanohybrid-coated electrode was less than that of Pt-sputtered and MWNT-coated electrodes. Due to the low charge-transfer resistance, the DSC exhibited fairly improved energy conversion efficiency compared to the DSCs equipped with Pt-sputtered and MWNT-coated counter electrodes.

Graphical abstract: Pt-NP–MWNT nanohybrid as a robust and low-cost counter electrode material for dye-sensitized solar cells

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Article information

DOI
https://doi.org/10.1039/C2JM31332D
Article type
Paper
Submitted
03 Mar 2012
Accepted
04 Apr 2012
First published
04 Apr 2012

J. Mater. Chem., 2012,22, 14023-14029

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Pt-NP–MWNT nanohybrid as a robust and low-cost counter electrode material for dye-sensitized solar cells

V. Dao, S. H. Ko, H. Choi and J. Lee, J. Mater. Chem., 2012, 22, 14023 DOI: 10.1039/C2JM31332D

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