An electrodeposition technique that could significantly improve the deposition of platinum-ruthenium (Pt-Ru) nanoparticles onto carbon nanotubes (CNTs) directly grown on carbon cloths was adopted in this study. Integrated sonication (IS) was activated during the electrodeposition process conducted in a sulfuric acid (H2SO4) solution containing Pt and Ru precursor chemicals of hexachloroplatinic acid and ruthenium trichloride, respectively, and ethylene glycol (EG) as a dispersing agent. In comparison with our earlier work, this new technique would further reduce the size of Pt-Ru particles from 4-6 nm to 2-3 nm and lead to a more even and higher surface distribution of these nanoparticles on the CNTs. In addition, the loadings of Pt and Ru on the CNTs were both markedly increased. Electrochemical characteristics of methanol oxidation on specimens bearing these catalysts (Pt-Ru/CNTs) were investigated via cyclic voltammetry analysis in mixed 1 M methanol and 0.5 M sulfuric acid solutions. It was found that the peak current density of methanol oxidation obtained from the cyclic voltammogram on the new Pt-Ru/CNTs specimen was nearly three times of that on the specimen prepared with EG in the absence of IS. The outcome signified better catalyst morphology and distribution and a significantly improved methanol oxidation efficiency of the new specimen prepared in the mixed EG and H2SO4 solution by electrodeposition in the presence of IS.
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August 2012
This article was originally published in
Journal of Fuel Cell Science and Technology
Research Papers
An Integrated Sonication Technique for Electrodeposition of Platinum and Ruthenium on Carbon Nanotubes for Methanol Oxidation Available to Purchase
Tsung-Kuang Yeh,
Tsung-Kuang Yeh
Department of Engineering and System Science,
e-mail: [email protected]
National Tsing Hua University
, 101, Sec. 2, Kuang Fu Road,Hsinchu 300, Taiwan
; Institute of Nuclear Engineering and Science, National Tsing Hua University
, 101, Sec. 2, Kuang Fu Road, Hsinchu 300, Taiwan
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Yu-Ming Chang,
Yu-Ming Chang
Department of Engineering and System Science,
National Tsing Hua University
, 101, Sec. 2, Kuang Fu Road, Hsinchu 300, Taiwan
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Chuen-Horng Tsai,
Chuen-Horng Tsai
Department of Engineering and System Science,
National Tsing Hua University
, 101, Sec. 2, Kuang Fu Road, Hsinchu 300, Taiwan
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Ming-Chi Tsai,
Ming-Chi Tsai
Department of Engineering and System Science,
National Tsing Hua University
, 101, Sec. 2, Kuang Fu Road, Hsinchu 300, Taiwan
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Mei-Ya Wang
Mei-Ya Wang
Nuclear Science and Technology Development Center,
National Tsing Hua University
, 101, Sec. 2, Kuang Fu Road, Hsinchu 300, Taiwan
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Tsung-Kuang Yeh
Department of Engineering and System Science,
National Tsing Hua University
, 101, Sec. 2, Kuang Fu Road,Hsinchu 300, Taiwan
; Institute of Nuclear Engineering and Science, National Tsing Hua University
, 101, Sec. 2, Kuang Fu Road, Hsinchu 300, Taiwan
e-mail: [email protected]
Yu-Ming Chang
Department of Engineering and System Science,
National Tsing Hua University
, 101, Sec. 2, Kuang Fu Road, Hsinchu 300, Taiwan
Chuen-Horng Tsai
Department of Engineering and System Science,
National Tsing Hua University
, 101, Sec. 2, Kuang Fu Road, Hsinchu 300, Taiwan
Ming-Chi Tsai
Department of Engineering and System Science,
National Tsing Hua University
, 101, Sec. 2, Kuang Fu Road, Hsinchu 300, Taiwan
Mei-Ya Wang
Nuclear Science and Technology Development Center,
National Tsing Hua University
, 101, Sec. 2, Kuang Fu Road, Hsinchu 300, Taiwan
J. Fuel Cell Sci. Technol. Aug 2012, 9(4): 041007 (6 pages)
Published Online: June 15, 2012
Article history
Received:
October 26, 2011
Revised:
March 26, 2012
Online:
June 15, 2012
Published:
June 15, 2012
Citation
Yeh, T., Chang, Y., Tsai, C., Tsai, M., and Wang, M. (June 15, 2012). "An Integrated Sonication Technique for Electrodeposition of Platinum and Ruthenium on Carbon Nanotubes for Methanol Oxidation." ASME. J. Fuel Cell Sci. Technol. August 2012; 9(4): 041007. https://doi.org/10.1115/1.4006800
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