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题名: Preparation and characterization of multiwalled carbon nanotube-supported platinum for cathode catalysts of direct methanol fuel cells
作者: Li, WZ;  Liang, CH;  Zhou, WJ;  Qiu, JS;  Zhou, ZH;  Sun, GQ;  Xin, Q
刊名: JOURNAL OF PHYSICAL CHEMISTRY B
发表日期: 2003-07-03
DOI: 10.1021/jp022505c
卷: 107, 期:26, 页:6292-6299
收录类别: SCI
文章类型: Article
部门归属: 305
项目归属: 305
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Multiwalled carbon nanotube-supported Pt (Pt/MWNT) nanocomposites were prepared by both the aqueous solution reduction of a Pt salt (HCHO reduction) and the reduction of a Pt ion salt in ethylene glycol solution. For comparison, a Pt/XC-72 nanocomposite was also prepared by the EG method. The Pt/MWNT catalyst prepared by the EG method has a high and homogeneous dispersion of spherical Pt metal particles with a narrow particle-size distribution. TEM images show that the Pt particle size is in the range of 2-5 nm with a peak at 2.6 nm, which is consistent with 2.5 nm obtained from the XRD broadening calculation. Surface chemical modifications of MWNTs and water content in EG solvent are found to be the key factors in depositing Pt particles on MWNTs. In the case of the direct methanol fuel cell (DMFC) test, the Pt/MWNT catalyst prepared by EG reduction is slightly superior to the catalyst prepared by aqueous reduction and displays significantly higher performance than the Pt/XC-72 catalyst. These differences in catalytic performance between the MWNT-supported or the carbon black XC-72-supported catalysts are attributed to a greater dispersion of the supported Pt particles when the EG method is used, in contrast to aqueous HCHO reduction and to possible unique structural and higher electrical properties when contrasting MWNTs to carbon black XC-72 as a support.
关键词[WOS]: OXYGEN-REDUCTION CATALYSTS ;  TRANSITION-METAL SULFIDES ;  HIGH RELATIVE PERFORMANCE ;  LARGE-SCALE SYNTHESIS ;  PARTICLE-SIZE ;  ANODE CATALYSTS ;  ALLOYS ;  ELECTROCATALYSIS ;  OXIDATION ;  ELECTROREDUCTION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000183812000008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/83337
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Direct Methanol Fuel Cell Lab, Dalian 116023, Peoples R China
3.Dalian Univ Technol, Carbon Res Lab, Dept Mat Sci & Chem Engn, Dalian 116012, Peoples R China

Recommended Citation:
Li, WZ,Liang, CH,Zhou, WJ,et al. Preparation and characterization of multiwalled carbon nanotube-supported platinum for cathode catalysts of direct methanol fuel cells[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2003,107(26):6292-6299.
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