Pt4ZrO2/C cathode catalyst for improved durability in high temperature PEMFC based on H3PO4 doped PBI

	Pt4ZrO2/C cathode catalyst for improved durability in high temperature PEMFC based on H3PO4 doped PBI
	Liu, Gang ; Zhang, Huamin ; Zhai, Yunfeng ; Zhang, Yu ; Xu, Dongyan ; Shao, Zhi-gang
刊名	electrochemistry communications
	2007
卷号	9 期号:1 页码:135-141
关键词	Pt4ZrO2/C oxygen reduction durability potential sweep test high temperature PEMFC
通讯作者	张华民
产权排序	1;1
英文摘要	in this paper, pt4zro2/c was prepared and compared with commercial pt/c (46.6 wt.% tkk) in terms of the durability as cathode catalyst in a high temperature proton exchange membrane fuel cell (pemfc) based on h3po4 doped polybenzimidazole (pbi) by a potential sweep test. the catalysts before and after the potential sweep test were characterized by rotating disk electrode (rde), xray diffraction (xrd), transmission electron microscopy (tem) and inductively coupled plasma-atomic emission spectroscopy (icp-aes). after 3000 cycles potential sweep test, the overall performance loss of the pt4zro2/c membrane electrode assembly (mea) was less than that of the pt/c mea. the ride results demonstrated that the oxygen reduction reaction (orr) activity of the as-prepared pt4zro2/c is nearly the same as tkk-pt/c. the xrd and tem results showed that pt4zro2/c catalyst presented higher sintering resistance than commercial pt/c catalyst during the potential sweep test. this may be attributed to the addition of zro2, which acts an anchor to inhibit the adjacent platinum particles to agglomerate. the icp-aes results of pt4zro2/c cathode catalyst before and after the potential sweep test showed that the composition of pt and zr were very near the nominal atomic ratio of pt:zr, which reflected that pt4zro2/c catalyst had a good stability during the potential sweep test. in brief, the preliminary results indicate that pt4zro2/c catalyst is a good candidate of pt/c catalyst in high temperature pemfc based on h3po4 doped pbi for achieving longer cell life-time and higher cell performance. (c) 2006 elsevier b.v. all rights reserved.
WOS标题词	science & technology ; physical sciences
类目[WOS]	electrochemistry
研究领域[WOS]	electrochemistry
关键词[WOS]	supported platinum catalysts ; membrane fuel-cells ; surface-area loss ; oxygen reduction ; polymer electrolyte ; phosphoric-acid ; carbon ; alloys ; electrocatalysis
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000243847600025
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/98987]
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 Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Liu, Gang,Zhang, Huamin,Zhai, Yunfeng,et al. Pt4ZrO2/C cathode catalyst for improved durability in high temperature PEMFC based on H3PO4 doped PBI[J]. electrochemistry communications,2007,9(1):135-141.
APA	Liu, Gang,Zhang, Huamin,Zhai, Yunfeng,Zhang, Yu,Xu, Dongyan,&Shao, Zhi-gang.(2007).Pt4ZrO2/C cathode catalyst for improved durability in high temperature PEMFC based on H3PO4 doped PBI.electrochemistry communications,9(1),135-141.
MLA	Liu, Gang,et al."Pt4ZrO2/C cathode catalyst for improved durability in high temperature PEMFC based on H3PO4 doped PBI".electrochemistry communications 9.1(2007):135-141.