The durability of polyol-synthesized PtRu/C for direct methanol fuel cells
文献类型：期刊论文
| 作者 | Guo, Junsong; Sun, Gongquan; Wu, Zhimou; Sun, Shiguo; Yan, Shiyou; Cao, Lei; Yan, Yushan; Su, Dangsheng; Xin, Qin |
| 刊名 | journal of power sources
 |
| 出版日期 | 2007-10-25 |
| 卷号 | 172期号:2页码:666-675 |
| 关键词 | direct methanol fuel cell PtRu durability unalloyed ru |
| 产权排序 | 1;1 |
| 通讯作者 | 孙公权 |
| 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. |
| 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 |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000250654700020 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/99269]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 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 |
| 推荐引用方式 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.,...&Xin, Qin.(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. |
入库方式： OAI收割
来源：大连化学物理研究所
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