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题名: Synthesis and structure-activity relationship exploration of carbon-supported PtRuNi nanocomposite as a CO-tolerant electrocatalyst for proton exchange membrane fuel cells
作者: Liang, YM;  Zhang, HM;  Tian, ZQ;  Zhu, XB;  Wang, XL;  Yi, BL
通讯作者: 张华民
刊名: JOURNAL OF PHYSICAL CHEMISTRY B
发表日期: 2006-04-20
DOI: 10.1021/jp0602732
卷: 110, 期:15, 页:7828-7834
收录类别: SCI
文章类型: Article
部门归属: 3
项目归属: 303
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: A carbon-supported PtRuNi nanocomposite is synthesized via a microwave-irradiated polyol plus annealing synthesis strategy. The catalyst is characterized by transmission electron microscopy, powder X-ray diffraction, energy dispersive spectroscopy, and X-ray photoelectron spectroscopy. The data are discussed with respect to those for the carbon-supported PtRu nanocomposite prepared following the same way. The characterizations show that the inclusion of Ni in the PtRu system has only a small effect on the particle size, the structure, and the compositional homogeneity. CO-stripping voltammetry and measurements on the single proton exchange membrane fuel cells show that the PtRuNi/C catalyst has an improved activity for COads electro-oxidation. An accelerated durability test on the catalyst exhibits insignificant loss of activity in acidic media. On the basis of the exploration of the structure-activity relationship, a mechanism for the improved performance of the catalyst is proposed. It is suggested that the improved CO-tolerant performance of the PtRuNi/C nanocomposite should be related to the hydrogen spillover on the catalyst surface, the enhanced oxidation of COads by nickel hydroxides, and the high proton and electronic conductivity of the hydroxides. The nickel hydroxide passivated surface and/or anchoring of metallic nickel in the platinum lattice may contribute to the durability of the catalyst in acid solution.
关键词[WOS]: PT-RU ELECTROCATALYST ;  METHANOL OXIDATION ;  ANODE CATALYST ;  PARTICLE-SIZE ;  NANOPARTICLES ;  ALLOY ;  ELECTRODES ;  ELECTROOXIDATION ;  TECHNOLOGY ;  REDUCTION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000236992100033
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/93837
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, Proton Exchange Membrane Fuel Cell Key Mat & Tech, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Liang, YM,Zhang, HM,Tian, ZQ,et al. Synthesis and structure-activity relationship exploration of carbon-supported PtRuNi nanocomposite as a CO-tolerant electrocatalyst for proton exchange membrane fuel cells[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2006,110(15):7828-7834.
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