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题名: Polyol-synthesized PtRu/C and PtRu black for direct methanol fuel cells
作者: Guo, Junsong;  Sun, Gongquan;  Sun, Shiguo;  Yan, Shiyou;  Yang, Weiqian;  Qi, Jing;  Yan, Yushan;  Xin, Qin
通讯作者: 孙公权
关键词: direct methanol fuel cell ;  PtRu/C ;  PtRu black ;  unalloyed Ru
刊名: JOURNAL OF POWER SOURCES
发表日期: 2007-06-01
DOI: 10.1016/j.jpowsour.2007.02.085
卷: 168, 期:2, 页:299-306
收录类别: SCI
文章类型: Article
部门归属: 3
项目归属: 305
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Electrochemistry ;  Energy & Fuels
英文摘要: PtRu/C and PtRu black catalysts with nominal Pt:Ru atomic ratio of 1:1 are prepared by a modified polyol process (co-reduction of metal precursor salts) as anode catalysts for direct methanol fuel cells (DMFCs). Without the carbon support, PtRu nanoparticles tend to agglomerate, while the PtRu nanoparticles in PtRu/C have a good dispersion as shown by TEM. Both PtRu black and PtRu/C have the almost same alloy degree indicated by XRD, but PtRu supported on carbon could improve the influence of Ru on Pt toward methanol oxidization as shown by cyclic voltammetry. The microstructure of PtRu/C is further studied by high-resolution transmission electron microscopy (HRTEM), and the results indicate that the lattice constant of Pt in PtRu electrocatalyst has contracted despite a few parts of Pt not alloyed with Ru due to the lattice constant of Pt without contracting, which is further proved by the results of temperature-programmed reduction (TPR). Such parts of unalloyed Ru are further proved to have ability to reduce the methanol oxidation potential on Pt by comparing the catalytic behaviors of Pt/C and Pt + Ru/C prepared by mixing carbon with separately prepared Pt and Ru colloids. Moreover, the catalytic behaviors of PtRu black and PtRu/C are also compared with those of commercial ones. (C) 2007 Elsevier B.V All rights reserved.
关键词[WOS]: OXIDATION ;  CATALYSTS ;  ELECTROCATALYSTS ;  NANOPARTICLES ;  PLATINUM ;  PERFORMANCE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000247055200002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/99265
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, Direct Methanol Fuel Cell Lab, Dalian 116023, Peoples R China
2.Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA

Recommended Citation:
Guo, Junsong,Sun, Gongquan,Sun, Shiguo,et al. Polyol-synthesized PtRu/C and PtRu black for direct methanol fuel cells[J]. JOURNAL OF POWER SOURCES,2007,168(2):299-306.
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