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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)
KeywordDirect Methanol Fuel Cell Ptru Durability Unalloyed Ru
Source PublicationJOURNAL OF POWER SOURCES
2007-10-25
DOI10.1016/j.jpowsour.2007.05.012
Volume172Issue:2Pages:666-675
Indexed BySCI
SubtypeArticle
Department3
Funding Project305
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectElectrochemistry ; Energy & Fuels
WOS Research AreaElectrochemistry ; Energy & Fuels
WOS KeywordPERFORMANCE ; ELECTROCATALYSTS ; DEGRADATION ; ANODE ; OXIDATION ; BLACK ; STACK ; DMFC
AbstractThe 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.
Language英语
URL查看原文
WOS IDWOS:000250654700020
Citation statistics
Cited Times:32[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/99269
Collection中国科学院大连化学物理研究所
Corresponding AuthorSun GQ(孙公权); Sun GQ(孙公权)
Affiliation1.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
Recommended Citation
GB/T 7714
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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