ICCAS OpenIR
Pt-Ru/CeO2/Carbon Nanotube Nanocomposites: An Efficient Electrocatalyst for Direct Methanol Fuel Cells
Sun, Zhenyu; Wang, Xiang; Liu, Zhimin; Zhang, Hongye; Yu, Ping; Mao, Lanqun
2010-07-20
Source PublicationLANGMUIR
ISSN0743-7463
Volume26Issue:14Pages:12383-12389
AbstractPt-Ru/CeO2/multiwalled carbon nanotube (MWNT) electrocatalysts were prepared using a rapid sonication-facilitated deposition method and were characterized by X-ray diffraction (XRD), X-ray photoemission spectroscopy (XPS), transmission electron microscopy (TEM), energy-dispersive spectroscopy (EDS), and voltammetry. Morphological characterization by TEM revealed that CeO2 nanoparticles (NPs) were in intimate contact with Pt-Ru NPs, and both were highly dispersed on the exteriors of nanotubes with a small size and a very narrow size distribution. Compared with the Pt-Ru/MWNT and Pt/MWNT electrocatalysts, the as-prepared Pt-Ru/CeO2/MWNT exhibited a significantly improved electrochemically active surface area (ECSA) and a remarkably enhanced activity toward methanol oxidation. The effects of the Pt-Ru loading and the Pt-to-Ru molar ratio on the electrocatalytic activity of Pt-Ru/CeO2/MWNT for methanol oxidation were investigated. We found that a maximum activity toward methanol oxidation reached at the 10 wt % of Pt-Ru loading and 1:1 of Pt-to-Ru ratio. Moreover, the role of CeO2 in the catalysts for the enhancement of methanol oxidation was discussed in terms of both bifunctional mechanism and electronic effects,
DOI10.1021/la101060s
Indexed BySCI
Language英语
WOS IDWOS:000279756700112
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:75[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/70116
Collection中国科学院化学研究所
Corresponding AuthorLiu, Zhimin
AffiliationChinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Sun, Zhenyu,Wang, Xiang,Liu, Zhimin,et al. Pt-Ru/CeO2/Carbon Nanotube Nanocomposites: An Efficient Electrocatalyst for Direct Methanol Fuel Cells[J]. LANGMUIR,2010,26(14):12383-12389.
APA Sun, Zhenyu,Wang, Xiang,Liu, Zhimin,Zhang, Hongye,Yu, Ping,&Mao, Lanqun.(2010).Pt-Ru/CeO2/Carbon Nanotube Nanocomposites: An Efficient Electrocatalyst for Direct Methanol Fuel Cells.LANGMUIR,26(14),12383-12389.
MLA Sun, Zhenyu,et al."Pt-Ru/CeO2/Carbon Nanotube Nanocomposites: An Efficient Electrocatalyst for Direct Methanol Fuel Cells".LANGMUIR 26.14(2010):12383-12389.
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