Stable support based on highly graphitic carbon xerogel for proton exchange membrane fuel cells

	Stable support based on highly graphitic carbon xerogel for proton exchange membrane fuel cells
	Jin, Hong 1,2; Zhang, Huamin 1; Ma, Yuanwei 1,2; Xu, Ting 1,2; Zhong, Hexiang 1; Wang, Meiri 1
刊名	journal of power sources
	2010-10-01
卷号	195 期号:19 页码:6323-6328
关键词	Proton exchange membrane fuel cells Carbon xerogel Carbon support Durability Accelerated aging test
通讯作者	张华民
产权排序	1;1
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.
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]	platinum catalyst ; organic aerogels ; durability ; pemfc ; electrodes ; oxidation ; formaldehyde ; degradation ; resorcinol ; nanohorns
收录类别	SCI
原文出处	false
语种	英语
WOS记录号	WOS:000279459500009
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/103545]
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, PEMFC Key Mat & Technol Lab, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	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.
APA	Jin, Hong,Zhang, Huamin,Ma, Yuanwei,Xu, Ting,Zhong, Hexiang,&Wang, Meiri.(2010).Stable support based on highly graphitic carbon xerogel for proton exchange membrane fuel cells.journal of power sources,195(19),6323-6328.
MLA	Jin, Hong,et al."Stable support based on highly graphitic carbon xerogel for proton exchange membrane fuel cells".journal of power sources 195.19(2010):6323-6328.