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https://irlib.pccu.edu.tw/handle/987654321/2590
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| Title: | Directly grown carbon nanotubes applied in direct methanol fuel |
| Authors: | Wang, Chen-Hao
Du, He-Yun
Tsai, Yu-Tai
Hsu, Hsin-Cheng
Shih, Han-Chang
Chen, Li-Chyong
Chen, Kuei-Hsien |
| Contributors: | 化材系 |
| Keywords: | carbon nanotube
direct methanol fuel cell
direct growth
methanol oxidation |
| Date: | 2007 |
| Issue Date: | 2009-11-09 |
| Abstract: | Carbon nanotubes (CNTs) were directly grown on a carbon cloth (DGCNTs), which were employed as the electrocatalyst support in the direct methanol fuel cell (DMFC). The! CNTs were prepared by an iron-assisted catalyst grown method using the microwave plasma-enhanced chemical vapor deposition. From the morphological analysis, the as-prepared DGCNT is a multi-walled and bamboo-like structure with a diameter of 10-20 nm. The Pt-Ru electrocatalysts were deposited on the DGCNTs using sputtering process (Pt-Ru/DGCNT), which were acted as an anode in the DMFC. The diameters of Pt-Ru nanoparticles deposited on the DGCNTs are ca. 3.54 nm, which are the high-degree alloy by X-ray diffraction analysis. For fabricating a membrane electrode assembly (MEA), 0.2 mg/cm(2) Pt-Ru/DGCNT and 4.0 mg/cm(2) Pt black deposited on carbon cloth were employed as the anode and cathode, respectively, which the Nafion 117 was sandwiched in between the electrodes by a hot-pressing process. The polarization curve shows that the maximum power density is ca. 1.52 W/Pt-mg feeding I M methanol and pure oxygen to the anode and cathode, respectively, operating at 60 degrees C. The low amount of precious metal loaded on DGCNTs applied in a MEA shows a high performance, which is suitable for a DMFC. |
| Relation: | JOURNAL OF THE CHINESE SOCIETY OF MECHANICAL ENGINEERS Volume: 28 Issue: 6 Pages: 571-575 |
| Appears in Collections: | [Department of Chemical & Materials Engineering] journal articles
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