Fabrication and characterization of a PTFE-reinforced integral composite membrane for self-humidifying PEMFC

	Fabrication and characterization of a PTFE-reinforced integral composite membrane for self-humidifying PEMFC
	Zhang, Yu ; Zhang, Huamin ; Zhu, Xiaobing ; Gang, Liu ; Bi, Cheng ; Liang, Yongmin
刊名	journal of power sources
	2007-03-20
卷号	165 期号:2 页码:786-792
关键词	self-humidifying membrane proton exchange membrane fuel cell PTFE-reinforcement low-cost degradation
通讯作者	张华民
产权排序	1;1
英文摘要	a novel ptfe-reinforced self-humidifying membrane based on low-cost sulfonated poly (ether ether ketone) (speek) resin was fabricated. in the membrane a base layer and a thin protective layer were bonded by porous polytetrafluoroethylene (ptfe) film. the base layer, which is composed of silicon oxide supported platinum catalyst (abbreviated as pt-sio2) dispersed in speek resin, can suppress reactant crossover and achieve good membrane hydration due to the imbedded hygroscopic pt-sio2 catalysts. the thin protective layer, which constitutes of h2o2 decomposition catalyst pt-sio2 and high h2o2-tolerant nafion resin, aims to prevent the speek resin degradation by h2o2 produced at the cathode side by incomplete reduction of oxygen. the porous ptfe film tightly bonds with the speek and the nation resins to form an integral membrane and accordingly to avoid delamination of the two different resins. the self-humidifying membrane was characterized by tem, sem and eds, etc. the self-humidifying membrane exhibits higher open circuit voltage (ocv) of 0.98 v and maximum power density value of 0.8 w cm(-2) than 0.94 v, 0.33 w cm(-2) of speek/ptfe membrane under dry condition, respectively. the primary 250 h fuel cell durability experiment was conducted and suggested that this low-cost self-humidifying membrane was durable both on fuel cell performance and the membrane structure under fuel cell operation condition with dry h-2/o-2. (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]	polymer electrolyte membrane ; fuel-cell applications ; crossover ; humidification ; degradation ; operation
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000245369100040
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/99331]
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, Lab PEMFC Key Mat & Technol, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yu,Zhang, Huamin,Zhu, Xiaobing,et al. Fabrication and characterization of a PTFE-reinforced integral composite membrane for self-humidifying PEMFC[J]. journal of power sources,2007,165(2):786-792.
APA	Zhang, Yu,Zhang, Huamin,Zhu, Xiaobing,Gang, Liu,Bi, Cheng,&Liang, Yongmin.(2007).Fabrication and characterization of a PTFE-reinforced integral composite membrane for self-humidifying PEMFC.journal of power sources,165(2),786-792.
MLA	Zhang, Yu,et al."Fabrication and characterization of a PTFE-reinforced integral composite membrane for self-humidifying PEMFC".journal of power sources 165.2(2007):786-792.