Application of hyperdispersant to the cathode diffusion layer for direct methanol fuel cell

	Application of hyperdispersant to the cathode diffusion layer for direct methanol fuel cell
	Mao, Qing 1,2; Sun, Gongquan 1; Wang, Suli 1; Sun, Hai 1; Tian, Yang 1,2; Tian, Juan 1,2; Xin, Oin 1
刊名	journal of power sources
	2008-01-10
卷号	175 期号:2 页码:826-832
关键词	polytetrafluoroethylene hyperdispersant agglomeration behavior gas diffusion layer water management direct methanol fuel cell
通讯作者	孙公权
产权排序	1;1
英文摘要	in this study, nation ionomer, as a kind of hyperdispersant, was added to poly tetrafluoroethylene (ptfe) water dispersion system to suppress the size of ptfe particles in the ink of microporous layer (mpl). the agglomeration behavior of ptfe in ethanol and mpl were investigated by laser diffraction, dynamic light scattering (dls) and metallurgical microscopes. the electronic resistance, pore size distribution, gas permeability and surface hydrophobic/hydrophilic properties were also characterized for prepared gas diffusion layers (gdls). it was shown that ptfe water dispersion system suffered flocculating when dispersed in ethanol and this agglomeration behavior was reduced by employing nafion ionomer. with the increase in the nafion ionomer adopted in the mpl, not only the decreased hydrophobic property was shown in the mpl, but the decreased ptfe particle size was also achieved, which results in improved crosslink of carbon and pores themselves as well as the volume loss of pores in micron scale. the increased gas permeability and electronic conductivity of the gdl made the one employing the ptfe dispersion system with 1% nation content own its advantages as the cathode diffusion layer for a direct methanol fuel cell (dmfc) under near-ambient conditions. (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 ; electrodes ; pemfc ; water ; transport ; membranes
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000252634300016
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/100877]
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.Dalian Inst Chem Phys, Direct Alcohol Fuel Cell 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	Mao, Qing,Sun, Gongquan,Wang, Suli,et al. Application of hyperdispersant to the cathode diffusion layer for direct methanol fuel cell[J]. journal of power sources,2008,175(2):826-832.
APA	Mao, Qing.,Sun, Gongquan.,Wang, Suli.,Sun, Hai.,Tian, Yang.,...&Xin, Oin.(2008).Application of hyperdispersant to the cathode diffusion layer for direct methanol fuel cell.journal of power sources,175(2),826-832.
MLA	Mao, Qing,et al."Application of hyperdispersant to the cathode diffusion layer for direct methanol fuel cell".journal of power sources 175.2(2008):826-832.