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The durability of polyol-synthesized PtRu/C for direct methanol fuel cells
Guo, Junsong; Sun, Gongquan; Wu, Zhimou; Sun, Shiguo; Yan, Shiyou; Cao, Lei; Yan, Yushan; Su, Dangsheng; Xin, Qin; Sun GQ(孙公权); Sun GQ(孙公权)
关键词Direct Methanol Fuel Cell Ptru Durability Unalloyed Ru
刊名JOURNAL OF POWER SOURCES
2007-10-25
DOI10.1016/j.jpowsour.2007.05.012
172期:2页:666-675
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
关键词[WOS]PERFORMANCE ; ELECTROCATALYSTS ; DEGRADATION ; ANODE ; OXIDATION ; BLACK ; STACK ; DMFC
英文摘要The durability of polyol-synthesized PtRu/C as anode electrocatalyst for direct methanol fuel cells (DMFCs) has been studied by conducting a 2020-h life-test of a single cell discharging at a constant current density of 100 mA cm(-2). Critical fuel cell performance parameters including anode activity, cathode activity and internal resistance are, for the first time, systematically examined at the life-test time of 556, 1093, 1630 and 2020 h. High-resolution transmission electron microscopy and X-ray diffraction (XRD) have also been performed and show that PtRu nanoparticles have agglomerated with the mean particle size increasing from 1.82 to 2.78 nm after the 2020-h life-test. Anode polarization and electrochemical impedance spectroscopy (EIS) show that there exists a stable discharging period where the anode polarization potential is less than 0.363 V versus dynamic hydrogen electrode (DHE). When the anode polarization potential exceeds 0.363 V versus DHE, the performance of the anode degrades dramatically due to the leaching of the unalloyed Ru as indicated by energy dispersive X-ray spectroscopy (EDS) and XRD. This finding provides clues in developing strategies to operate fuel cells achieving maximum lifetime without noticeable performance lose. (c) 2007 Elsevier B.V. All rights reserved.
语种英语
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WOS记录号WOS:000250654700020
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被引频次:31[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/99269
专题中国科学院大连化学物理研究所
通讯作者Sun GQ(孙公权); Sun GQ(孙公权)
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 Environm Chem & Engn, Riverside, CA 92521 USA
3.Max Planck Soc, Fritz Haber Inst, Dept Inorgan Chem, D-14195 Berlin, Germany
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Guo, Junsong,Sun, Gongquan,Wu, Zhimou,et al. The durability of polyol-synthesized PtRu/C for direct methanol fuel cells[J]. JOURNAL OF POWER SOURCES,2007,172(2):666-675.
APA Guo, Junsong.,Sun, Gongquan.,Wu, Zhimou.,Sun, Shiguo.,Yan, Shiyou.,...&孙公权.(2007).The durability of polyol-synthesized PtRu/C for direct methanol fuel cells.JOURNAL OF POWER SOURCES,172(2),666-675.
MLA Guo, Junsong,et al."The durability of polyol-synthesized PtRu/C for direct methanol fuel cells".JOURNAL OF POWER SOURCES 172.2(2007):666-675.
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