Studies on the Improvement of catalytic performance for direct methanol fuel cell
| Project/Area Number |
15560669
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Catalyst/Resource chemical process
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| Research Institution | Musashi Institute of technology |
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Principal Investigator |
KOBAYASHI Koichi Musashi Inst. of Technology, Engineering, Professor, 工学部, 教授 (90097171)
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| Co-Investigator(Kenkyū-buntansha) |
KIM Taeyoon Musashi Inst. of Tech., Engineering, Research assistant
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| Project Period (FY) |
2003 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2005: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 2004: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2003: ¥2,300,000 (Direct Cost: ¥2,300,000)
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| Keywords | DMFC / Anode catalyst / Anti CO tolerance / Pt-Ru-Sn catalyst / Pt-Ru-Fe catalyst / Cyclic Voltammetry / アノード電極触媒 / Pt-Ru-Sn系触媒 / 直接メタノール形燃料電池 / サイクロボルタンメトリー / CO被毒 / Pt-Ru-Sn合金触媒 / 直接メタノール型燃料電池 / アルコール還元法 / 白金-ルテニウムナノ粒子 / 燃料電池用触媒 / メタノールの酸化活性 / 酸素還元 |
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| Research Abstract |
Direct methanol fuel cells(DMFC) have been received much attention because of their characteristics such as high energy conversion efficiency, low pollutant emission, high energy density of methanol, and fuel availability. However, there are some problems, inhibiting the application of DMFC. These problems to be solved involve the low activity of methanol and CO_2 tolerance. To enhance the catalytic activity of methanol oxidation, there are intensive researches on Pt alloy catalysts that minimize the catalyst poisoning.
In the present work, the highly dispersed Pt and Pt-Ru alloy particles on carbon support were prepared by alcohol-reduction method using polyvinylpyrolidone as a stabilizer, and by chemical reduction method using reverse microemulsion. The prepared catalysts were characterized by UV-visible spectroscopy, x-ray diffraction, electron microscopy, x-ray photoelectron spectroscopy, cyclic voltammetry, and CO striping method. The former method has advantages over simplicity an
… More
d straight reduction of chloride salt without any modification. In the latter case, the average size of nanoparticle was ca. 2-4 nm with narrow distribution. Moreover, they are homogeneously dispersed on carbon support. It is cleared that the particle size of nanoparticle was dependent on the water volume in microemulsion. In addition, CO stripping voltammetry and the electrochemical oxidations of CO/H_2 and methanol showed that the synthesized bimetallic particles had a high surface area and a good catalytic activity for the oxidations of CO and methanol.
The preparation and characterization of Pt_3Ru_2Sn and Pt-Ru-Fe catalysts were investigated. The catalytic activity of Pt-Ru-Sn catalyst was significantly higher than that of Pt-Ru. Sn in ternary alloy catalyst modified the Pt electric structure without the large increase of Pt-Pt bond distance, which may enhance the catalytic activity for methanol oxidation by improving CO tolerance. Next, the catalytic activity of Pt_3Ru_2Fe catalyst was studied. The activity of methanol oxidation of Pt_3Ru_2Fe catalyst was 2.5 times higher than that of Pt-Ru catalyst by the enhanced CO tolerance. Less
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Report
(4 results)
Research Products
(20 results)
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[Book] 図解雑学 燃料電池2004
Author(s)
小林 光一, 高橋 政志
Total Pages
227
Publisher
ナツメ社
Description
「研究成果報告書概要(和文)」より
Related Report
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