A novel cathode structure with double catalyst layers and low Pt loading for proton exchange membrane fuel cells

	A novel cathode structure with double catalyst layers and low Pt loading for proton exchange membrane fuel cells
	Qiu, Yanling; Zhang, Huamin; Zhong, Hexiang; Zhang, Fengxiang
刊名	international journal of hydrogen energy
	2013-05-10
卷号	38 期号:14 页码:5836-5844
关键词	Cathode structure Double catalyst layers Pt utilization Water flooding problem Synergistic effect Polymer electrolyte membrane fuel cells (PEMFCs)
通讯作者	张华民 ; 钟和香
产权排序	待补充
合作状况	英
英文摘要	a novel cathode structure (ncs) was developed, which consisted of an inner and an outer catalyst layer (cl). it showed an improved platinum (pt) utilization (above 50%), a lowered cl/gas diffusion layer interfacial resistance, and a decreased mass transport polarization compared with the traditional cathode structure (tcs). a hydrogen/air proton exchange membrane fuel cell employing ncs yielded an output power density up to 0.76 w cm(-2) with cathode pt loading as low as 0.28 mg cm(-2). the enhanced performance of ncs is attributed to synergistic effect of the two catalyst supports in outer cl, which provides abundant pores to relieve water flooding and facilitates heat-induced proton conductor migration from the inner to outer cl, forming a hydrophilic proton conduction network. moreover, the thin and compact inner cl can meet the demand of rich active sites and catalyst migration toward the regions nearest to the membrane under high current densities. copyright (c) 2013, hydrogen energy publications, llc. published by elsevier ltd. all rights reserved.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, physical ; electrochemistry ; energy & fuels
研究领域[WOS]	chemistry ; electrochemistry ; energy & fuels
关键词[WOS]	thin-film ; pemfc electrodes ; performance ; platinum ; fabrication ; deposition ; diagnosis ; impedance ; ionomers ; surface
收录类别	SCI
资助信息	1，1
原文出处	5844
语种	英语
WOS记录号	WOS:000319232500037
公开日期	2014-09-11
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/119250]
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	Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Qiu, Yanling,Zhang, Huamin,Zhong, Hexiang,et al. A novel cathode structure with double catalyst layers and low Pt loading for proton exchange membrane fuel cells[J]. international journal of hydrogen energy,2013,38(14):5836-5844.
APA	Qiu, Yanling,Zhang, Huamin,Zhong, Hexiang,&Zhang, Fengxiang.(2013).A novel cathode structure with double catalyst layers and low Pt loading for proton exchange membrane fuel cells.international journal of hydrogen energy,38(14),5836-5844.
MLA	Qiu, Yanling,et al."A novel cathode structure with double catalyst layers and low Pt loading for proton exchange membrane fuel cells".international journal of hydrogen energy 38.14(2013):5836-5844.