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题名: Stable support based on highly graphitic carbon xerogel for proton exchange membrane fuel cells
作者: Jin, Hong1, 2;  Zhang, Huamin1;  Ma, Yuanwei1, 2;  Xu, Ting1, 2;  Zhong, Hexiang1;  Wang, Meiri1
通讯作者: 张华民
关键词: Proton exchange membrane fuel cells ;  Carbon xerogel ;  Carbon support ;  Durability ;  Accelerated aging test
刊名: JOURNAL OF POWER SOURCES
发表日期: 2010-10-01
DOI: 10.1016/j.jpowsour.2010.04.050
卷: 195, 期:19, 页:6323-6328
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 ;  Technology
类目[WOS]: Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Electrochemistry ;  Energy & Fuels
英文摘要: Highly graphitic carbon xerogel (GCX) is prepared by the modified sol-gel polymerization process using cobalt nitrate as the catalyst, followed by high temperature treatment at 1800 degrees C. The as-prepared GCX is explored as a stable support for Pt in proton exchange membrane fuel cells. The results of N(2) sorption measurement and X-ray diffraction analysis (XRD) reveal that GCX has a better mesoporous structure and a preferably higher degree of graphitization, compared with the commercial XC-72 carbon black. The transmission electron microscopy (TEM) image indicates that Pt nanoparticles are well dispersed on GCX and exhibit relatively narrow size distribution. Accelerated aging test (AAT) based on potential cycling is used to investigate the durability of the as-prepared Pt/GCX in comparison with the commercial Pt/C. Electrochemical analysis demonstrates that the catalyst with GCX as a support exhibits an alleviated degradation rate of electrochemical active surface area (39% for Pt/GCX and 53% for Pt/C). The results of single cell durability tests indicate that the voltage loss of Pt/GCX at 100 mA cm(-2) is about 50% lower than that of Pt/C. GCX is expected to be a corrosion resistant electrocatalyst support. (C) 2010 Elsevier B.V. All rights reserved.
关键词[WOS]: PLATINUM CATALYST ;  ORGANIC AEROGELS ;  DURABILITY ;  PEMFC ;  ELECTRODES ;  OXIDATION ;  FORMALDEHYDE ;  DEGRADATION ;  RESORCINOL ;  NANOHORNS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000279459500009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/103545
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, PEMFC Key Mat & Technol Lab, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Jin, Hong,Zhang, Huamin,Ma, Yuanwei,et al. Stable support based on highly graphitic carbon xerogel for proton exchange membrane fuel cells[J]. JOURNAL OF POWER SOURCES,2010,195(19):6323-6328.
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