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Preparation and characterization of multiwalled carbon nanotube-supported platinum for cathode catalysts of direct methanol fuel cells
Li, WZ; Liang, CH; Zhou, WJ; Qiu, JS; Zhou, ZH; Sun, GQ; Xin, Q
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY B
2003-07-03
DOI10.1021/jp022505c
Volume107Issue:26Pages:6292-6299
Indexed BySCI
SubtypeArticle
Department305
Funding Project305
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordOXYGEN-REDUCTION CATALYSTS ; TRANSITION-METAL SULFIDES ; HIGH RELATIVE PERFORMANCE ; LARGE-SCALE SYNTHESIS ; PARTICLE-SIZE ; ANODE CATALYSTS ; ALLOYS ; ELECTROCATALYSIS ; OXIDATION ; ELECTROREDUCTION
AbstractMultiwalled 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.
Language英语
URL查看原文
WOS IDWOS:000183812000008
Citation statistics
Cited Times:992[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/83337
Collection中国科学院大连化学物理研究所
Affiliation1.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
GB/T 7714
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.
APA Li, WZ.,Liang, CH.,Zhou, WJ.,Qiu, JS.,Zhou, ZH.,...&Xin, Q.(2003).Preparation and characterization of multiwalled carbon nanotube-supported platinum for cathode catalysts of direct methanol fuel cells.JOURNAL OF PHYSICAL CHEMISTRY B,107(26),6292-6299.
MLA Li, WZ,et al."Preparation and characterization of multiwalled carbon nanotube-supported platinum for cathode catalysts of direct methanol fuel cells".JOURNAL OF PHYSICAL CHEMISTRY B 107.26(2003):6292-6299.
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