Carbon nanofibers supported Pt-Ru electrocatalysts for direct methanol fuel cells
Guo, JS; Sun, GQ; Wang, Q; Wang, GX; Zhou, ZH; Tang, SH; Jiang, LH; Zhou, B; Xin, Q
KeywordCarbon Nanofibers Catalyst Support Surface Properties
Source PublicationCARBON
Indexed BySCI
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Materials Science
AbstractOxidized and reduced carbon nanofibers (OCNF and RCNF) were used as supports to prepare highly dispersed PtRu catalysts for the direct methanol fuel cells (DMFC). The structural and surface features and electrocatalytic properties of bimetallic PtRu/ OCNF and PtRu/RCNF were extensively investigated. FT-IR spectra show that carboxyl groups exist on the surface of the OCNF, which greatly influence the morphology and crystallinity of the electrocatalysts. Transmission electron microscopy and X-ray diffraction consistently show that PtRu/RCNF has a smaller particle size and more uniform distribution than PtRu/OCNF. However, both catalysts have very similar methanol oxidation peak current densities that are significantly lower than commercial catalyst based on current-voltage (CV) results. These two catalysts also give very similar single cell performance except for some difference in the resistance polarization region. The OCNF supported catalysts give better performance than commercial catalysts when current density is higher than 50 mA cm(-2) in spite of low methanol oxidation peak current density. These results can be ascribed to the specific surface and structural properties of carbon nanofibers. (C) 2005 Elsevier Ltd. All rights reserved.
WOS IDWOS:000233508700018
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Cited Times:155[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Direct Alcohol Fuel Cell Lab, Dalian 116023, Peoples R China
2.Headwaters Nanokinetix, Lawrenceville, NJ 08648 USA
Recommended Citation
GB/T 7714
Guo, JS,Sun, GQ,Wang, Q,et al. Carbon nanofibers supported Pt-Ru electrocatalysts for direct methanol fuel cells[J]. CARBON,2006,44(1):152-157.
APA Guo, JS.,Sun, GQ.,Wang, Q.,Wang, GX.,Zhou, ZH.,...&Xin, Q.(2006).Carbon nanofibers supported Pt-Ru electrocatalysts for direct methanol fuel cells.CARBON,44(1),152-157.
MLA Guo, JS,et al."Carbon nanofibers supported Pt-Ru electrocatalysts for direct methanol fuel cells".CARBON 44.1(2006):152-157.
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