Studies on the Improvement of catalytic performance for direct methanol fuel cell
直接甲醇燃料电池催化性能改进研究
基本信息
- 批准号:15560669
- 负责人:
- 金额:$ 2.05万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2003
- 资助国家:日本
- 起止时间:2003 至 2005
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
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
直接甲醇燃料电池(DMFC)因具有能量转换效率高、污染物排放低、甲醇能量密度高、燃料利用率高等特点而备受关注。但也存在一些问题,制约了直接甲醇燃料电池的应用。这些需要解决的问题包括甲醇活性低和对CO_2的耐受。为了提高甲醇氧化的催化活性,人们对铂合金催化剂进行了大量的研究,以减少催化剂的中毒。本文以聚乙烯吡咯烷酮为稳定剂,采用醇还原法和反相微乳液化学还原法制备了高分散的铂和铂-Ru合金颗粒。用紫外-可见光谱、X-射线衍射、电子显微镜、X-射线光电子能谱、循环伏安法和CO溶出法对催化剂进行了表征。与…相比,前者具有简单性好的优点更多的氯盐直接还原,没有任何改变。在后一种情况下,纳米粒子的平均尺寸约为2-4 nm,分布较窄。此外,它们均匀分散在碳载体上。结果表明,纳米粒子的大小依赖于微乳液中的水量。此外,CO溶出伏安法和CO/H2和甲醇的电化学氧化实验表明,合成的双金属粒子具有较高的比表面积,对CO和甲醇的氧化具有良好的催化活性。铂-Ru-锡催化剂的催化活性明显高于铂-Ru。三元合金催化剂中的锡改性了铂的电子结构,而没有大幅度增加铂-铂键距,这可能通过提高催化剂的抗一氧化碳能力来提高其对甲醇氧化的催化活性。其次,考察了Pt_3Ru_2Fe催化剂的催化活性。提高了催化剂的CO耐受性,使催化剂的甲醇氧化活性提高了2.5倍。较少
项目成果
期刊论文数量(26)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Preparation of carbon-supported Pt and Pt alloy catalysts by alcohol reduction for polymer electrolyte fuel cells
醇还原制备碳载Pt及Pt合金催化剂用于聚合物电解质燃料电池
- DOI:
- 发表时间:2003
- 期刊:
- 影响因子:0
- 作者:Taeyoon Kim;K.Kobayashi
- 通讯作者:K.Kobayashi
Preparation and characterization of carbon supported Pt and PtRu alloy catalysts reduced by alcohol for polymer electrolyte fuel cell
- DOI:10.1016/j.electacta.2004.01.124
- 发表时间:2004-11
- 期刊:
- 影响因子:6.6
- 作者:Taeyoon Kim;Masashi Takahashi;M. Nagai;Koichi Kobayashi
- 通讯作者:Taeyoon Kim;Masashi Takahashi;M. Nagai;Koichi Kobayashi
小林光一, 高橋政志: "図解雑学 燃料電池"ナツメ社. 227 (2004)
Koichi Kobayashi、Masashi Takahashi:《燃料电池琐事图解》Natsumesha 227 (2004)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Preparation of carbon-supported Pt and alloy catalysts by alcohol reduction for polymer electrolyte fuel cells
醇还原制备碳载Pt及合金催化剂用于聚合物电解质燃料电池
- DOI:
- 发表时间:2003
- 期刊:
- 影响因子:0
- 作者:Taeyoon Kim;Koichi Kobayashi
- 通讯作者:Koichi Kobayashi
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KOBAYASHI Koichi其他文献
Reduced Model Reconstruction Method for Stable Positive Network Systems
稳定正网络系统的简化模型重构方法
- DOI:
10.1109/tac.2022.3218620 - 发表时间:
2022 - 期刊:
- 影响因子:6.8
- 作者:
YAMASHITA Yuh;SUMITA Haruka;ADACHI Ryosuke;KOBAYASHI Koichi;Sato Kazuhiro - 通讯作者:
Sato Kazuhiro
ワイヤレス人体センシング:バイタルサインの電波計測と信号処理
无线人体传感:生命体征的无线电波测量和信号处理
- DOI:
- 发表时间:
2023 - 期刊:
- 影响因子:0
- 作者:
KOBAYASHI Koichi;NAKAJIMA Kyohei;YAMASHITA Yuh;阪本 卓也 - 通讯作者:
阪本 卓也
Blockchain-Based Optimization of Distributed Energy Management Systems with Real-Time Demand Response
基于区块链的分布式能源管理系统优化与实时需求响应
- DOI:
10.1587/transfun.2021eap1162 - 发表时间:
2022 - 期刊:
- 影响因子:0
- 作者:
OGAWA Daiki;KOBAYASHI Koichi;YAMASHITA Yuh - 通讯作者:
YAMASHITA Yuh
Sensor Scheduling-Based Detection of False Data Injection Attacks in Power System State Estimation
电力系统状态估计中基于传感器调度的虚假数据注入攻击检测
- DOI:
10.1587/transfun.2021eal2098 - 发表时间:
2022 - 期刊:
- 影响因子:0
- 作者:
OBATA Sho;KOBAYASHI Koichi;YAMASHITA Yuh - 通讯作者:
YAMASHITA Yuh
レーダと機械学習による人体モニタリング技術
利用雷达和机器学习的人体监测技术
- DOI:
- 发表时间:
2021 - 期刊:
- 影响因子:0
- 作者:
OBATA Sho;KOBAYASHI Koichi;YAMASHITA Yuh;阪本卓也 - 通讯作者:
阪本卓也
KOBAYASHI Koichi的其他文献
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{{ truncateString('KOBAYASHI Koichi', 18)}}的其他基金
Fiber reinforced mortar with high durability and high ductility for shotcreting
具有高耐久性和高延展性的喷射混凝土纤维增强砂浆
- 批准号:
25420458 - 财政年份:2013
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$ 2.05万 - 项目类别:
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Regulation of chloroplast differentiation during sink/source conversion
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24770055 - 财政年份:2012
- 资助金额:
$ 2.05万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
Control of Stochastic Hybrid Systems and Its Applications to Systems Biology
随机混合系统的控制及其在系统生物学中的应用
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23760387 - 财政年份:2011
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$ 2.05万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
In vivo measurement of 3D load transfer mechanism in the lower extremity
下肢 3D 负载转移机制的体内测量
- 批准号:
22560074 - 财政年份:2010
- 资助金额:
$ 2.05万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
A new non-destructive test method that can estimate corrosion amount on rebar quantitatively
一种定量估算钢筋腐蚀量的无损检测新方法
- 批准号:
22560460 - 财政年份:2010
- 资助金额:
$ 2.05万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Elucidation of mechanism of cardioprotective effect by wnt11 and development of therapeutic application
Wnt11心脏保护作用机制的阐明及治疗应用的开发
- 批准号:
22790698 - 财政年份:2010
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$ 2.05万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
Control Theory of Hybrid Systems Based on a New Model of Finite Automata
基于新有限自动机模型的混合系统控制理论
- 批准号:
20760278 - 财政年份:2008
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$ 2.05万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
Performance improvement of dye-sensitized solar cell with carbon nanoshell as counter material
以碳纳米壳为反材料的染料敏化太阳能电池的性能改进
- 批准号:
20550166 - 财政年份:2008
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$ 2.05万 - 项目类别:
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Changes in oxygen metabolism in solid tumors by administration of artificial oxygen carriers
人工氧载体给药改变实体瘤中的氧代谢
- 批准号:
15390422 - 财政年份:2003
- 资助金额:
$ 2.05万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
ANALYSIS OF ECONOMIC EFFECTS OF THE WORLD EXPOSITION -from the viewpoint of an international comparative study and regional development-
世博会的经济影响分析——从国际比较研究和区域发展的角度——
- 批准号:
13430018 - 财政年份:2001
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$ 2.05万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
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