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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
关键词Carbon Nanofibers Catalyst Support Surface Properties
刊名CARBON
2006
DOI10.1016/j.carbon.2005.06.047
44期:1页:152-157
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Materials Science
关键词[WOS]ANODE CATALYSTS ; OXIDATION ; ELECTROOXIDATION ; PERFORMANCE ; ELECTRODES ; NANOTUBES ; PLATINUM
英文摘要Oxidized 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.
语种英语
WOS记录号WOS:000233508700018
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140249
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Direct Alcohol Fuel Cell Lab, Dalian 116023, Peoples R China
2.Headwaters Nanokinetix, Lawrenceville, NJ 08648 USA
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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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