Directly grown carbon nanotubes applied in direct methanol fuel

文化大學機構典藏 CCUR > 理工學院 > 工學院 > 化學工程與材料工程學系暨碩士班 > 期刊論文 > Item 987654321/2590

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題名:	Directly grown carbon nanotubes applied in direct methanol fuel
作者:	Wang, Chen-Hao Du, He-Yun Tsai, Yu-Tai Hsu, Hsin-Cheng Shih, Han-Chang Chen, Li-Chyong Chen, Kuei-Hsien
貢獻者:	化材系
關鍵詞:	carbon nanotube direct methanol fuel cell direct growth methanol oxidation
日期:	2007
上傳時間:	2009-11-09
摘要:	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.
關聯:	JOURNAL OF THE CHINESE SOCIETY OF MECHANICAL ENGINEERS Volume: 28 Issue: 6 Pages: 571-575
顯示於類別:	[化學工程與材料工程學系暨碩士班] 期刊論文

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