Stability of Ceria Supports in Pt-CeOx/C Catalysts

	Stability of Ceria Supports in Pt-CeOx/C Catalysts
	Ou, Ding Rong 1,2; Mori, Toshiyuki 2; Fugane, Keisuke 2,3; Togasaki, Hirotaka 2,4; Ye, Fei 5; Drennan, John 6
刊名	journal of physical chemistry c
	2011-10-06
卷号	115 期号:39 页码:19239-19245
英文摘要	pt-ceox/c (1.5 <= x <= 2) catalysts are promising electrode materials in polymer electrolyte membrane fuel cells (pemfcs), especially in direct methanol fuel cells. in this study, the chemical and microstructural features of the catalysts before and after electrocatalytic reactions were compared, and then the stability of ceria supports in the catalysts was studied. it was found that, during the impregnation of pt on ceria, pt particles will invade into the ceria supports and the ceria will be partly reduced. subsequently, in an acidic condition that is required in a fuel cell using an before reactions acid-based polymer electrolyte, the cent supports were instable and easily dissolved into the sulfuric acid solution. as a result, only a small amount of ceria remains around/between the pt particles. the experimental result suggested that the dissolution of ceria could be due to the partial reduction of the ceria supports in the as-prepared catalysts. although only a small amount of ceria could remain in the catalysts, it can effectively prevent the growth and sintering of pt particles and contribute to the co tolerance and higher catalytic activities of the pt-ceox/c catalysts.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, physical ; nanoscience & nanotechnology ; materials science, multidisciplinary
研究领域[WOS]	chemistry ; science & technology - other topics ; materials science
关键词[WOS]	energy-loss spectroscopy ; methanol fuel-cell ; oxide nanoparticles ; co oxidation ; platinum ; electrooxidation ; electrocatalyst ; interface ; carbon ; black
收录类别	SCI
语种	英语
WOS记录号	WOS:000295245500042
公开日期	2015-11-17
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/142572]
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, Lab Fuel Cells, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 2.Natl Inst Mat Sci, Innovat Ctr Nanomat Sci Environm & Energy, Tsukuba, Ibaraki 3050044, Japan 3.Hokkaido Univ, Grad Sch Chem Sci & Engn, Kita Ku, Sapporo, Hokkaido 0608628, Japan 4.Hokkaido Univ, Dept Chem, Grad Sch Sci, Kita Ku, Sapporo, Hokkaido 0608628, Japan 5.Dalian Univ Technol, Key Lab Mat Modificat, Sch Mat Sci & Engn, Dalian 116024, Liaoning, Peoples R China 6.Univ Queensland, Ctr Microscopy & Microanal, St Lucia, Qld 4072, Australia
推荐引用方式 GB/T 7714	Ou, Ding Rong,Mori, Toshiyuki,Fugane, Keisuke,et al. Stability of Ceria Supports in Pt-CeOx/C Catalysts[J]. journal of physical chemistry c,2011,115(39):19239-19245.
APA	Ou, Ding Rong,Mori, Toshiyuki,Fugane, Keisuke,Togasaki, Hirotaka,Ye, Fei,&Drennan, John.(2011).Stability of Ceria Supports in Pt-CeOx/C Catalysts.journal of physical chemistry c,115(39),19239-19245.
MLA	Ou, Ding Rong,et al."Stability of Ceria Supports in Pt-CeOx/C Catalysts".journal of physical chemistry c 115.39(2011):19239-19245.