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题名: Pt4ZrO2/C cathode catalyst for improved durability in high temperature PEMFC based on H3PO4 doped PBI
作者: Liu, Gang;  Zhang, Huamin;  Zhai, Yunfeng;  Zhang, Yu;  Xu, Dongyan;  Shao, Zhi-gang
通讯作者: 张华民
关键词: Pt4ZrO2/C ;  oxygen reduction ;  durability ;  potential sweep test ;  high temperature PEMFC
刊名: ELECTROCHEMISTRY COMMUNICATIONS
发表日期: 2007
DOI: 10.1016/j.elecom.2006.08.056
卷: 9, 期:1, 页:135-141
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]: Electrochemistry
研究领域[WOS]: Electrochemistry
英文摘要: In this paper, Pt4ZrO2/C was prepared and compared with commercial Pt/C (46.6 wt.% TKK) in terms of the durability as cathode catalyst in a high temperature proton exchange membrane fuel cell (PEMFC) based on H3PO4 doped polybenzimidazole (PBI) by a potential sweep test. The catalysts before and after the potential sweep test were characterized by rotating disk electrode (RDE), Xray diffraction (XRD), transmission electron microscopy (TEM) and inductively coupled plasma-atomic emission spectroscopy (ICP-AES). After 3000 cycles potential sweep test, the overall performance loss of the Pt4ZrO2/C membrane electrode assembly (MEA) was less than that of the Pt/C MEA. The RIDE results demonstrated that the oxygen reduction reaction (ORR) activity of the as-prepared Pt4ZrO2/C is nearly the same as TKK-Pt/C. The XRD and TEM results showed that Pt4ZrO2/C catalyst presented higher sintering resistance than commercial Pt/C catalyst during the potential sweep test. This may be attributed to the addition of ZrO2, which acts an anchor to inhibit the adjacent platinum particles to agglomerate. The ICP-AES results Of Pt4ZrO2/C cathode catalyst before and after the potential sweep test showed that the composition of Pt and Zr were very near the nominal atomic ratio of Pt:Zr, which reflected that Pt4ZrO2/C catalyst had a good stability during the potential sweep test. In brief, the preliminary results indicate that Pt4ZrO2/C catalyst is a good candidate of Pt/C catalyst in high temperature PEMFC based on H3PO4 doped PBI for achieving longer cell life-time and higher cell performance. (c) 2006 Elsevier B.V. All rights reserved.
关键词[WOS]: SUPPORTED PLATINUM CATALYSTS ;  MEMBRANE FUEL-CELLS ;  SURFACE-AREA LOSS ;  OXYGEN REDUCTION ;  POLYMER ELECTROLYTE ;  PHOSPHORIC-ACID ;  CARBON ;  ALLOYS ;  ELECTROCATALYSIS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000243847600025
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/98987
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, Lab PEMFC Key Mat & Technol, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Liu, Gang,Zhang, Huamin,Zhai, Yunfeng,et al. Pt4ZrO2/C cathode catalyst for improved durability in high temperature PEMFC based on H3PO4 doped PBI[J]. ELECTROCHEMISTRY COMMUNICATIONS,2007,9(1):135-141.
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