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学科主题: 物理化学
题名: Architecture of PtFe/C catalyst with high activity and durability for oxygen reduction reaction
作者: Li, Jiayuan1, 2;  Wang, Guoxiong1;  Wang, Jing1, 2;  Miao, Shu3;  Wei, Mingming1, 2;  Yang, Fan1;  Yu, Liang1;  Bao, Xinhe1, 3
通讯作者: 汪国雄 ;  包信和
关键词: Pt3Fe@Pt-FeOx architecture ;  activity ;  durability ;  oxygen reduction reaction ;  proton exchange membrane fuel cell
刊名: NANO RESEARCH
发表日期: 2014-10-01
DOI: 10.1007/s12274-014-0513-0
卷: 7, 期:10, 页:1519-1527
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary ;  Physics, Applied
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science ;  Physics
英文摘要: A PtFe/C catalyst has been synthesized by impregnation and high-temperature reduction followed by acid-leaching. X-ray diffraction, X-ray photoelectron spectroscopy and X-ray atomic near edge spectroscopy characterization reveal that Pt3Fe alloy formation occurs during high-temperature reduction and that unstable Fe species are dissolved into acid solution. The difference in Fe concentration from the core region to the surface and strong O-Fe bonding may drive the outward diffusion of Fe to the highly corrugated Pt-skeleton, and the resulting highly dispersed surface FeO (x) is stable in acidic medium, leading to the construction of a Pt3Fe@Pt-FeO (x) architecture. The as prepared PtFe/C catalyst demonstrates a higher activity and comparable durability for the oxygen reduction reaction compared with a Pt/C catalyst, which might be due to the synergetic effect of surface and subsurface Fe species in the PtFe/C catalyst.
关键词[WOS]: MEMBRANE FUEL-CELLS ;  CARBON NANOTUBES ;  CATHODE CATALYST ;  ALLOY ;  FE ;  IRON ;  ELECTROCATALYSIS ;  NANOPARTICLES ;  OXIDATION ;  PLATINUM
语种: 英语
WOS记录号: WOS:000343083400012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/144240
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, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

Recommended Citation:
Li, Jiayuan,Wang, Guoxiong,Wang, Jing,et al. Architecture of PtFe/C catalyst with high activity and durability for oxygen reduction reaction[J]. NANO RESEARCH,2014,7(10):1519-1527.
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