Cerium reduction at the interface between ceria and yttria-stabilised zirconia and implications for interfacial oxygen non-stoichiometry

IMR OpenIR

	Cerium reduction at the interface between ceria and yttria-stabilised zirconia and implications for interfacial oxygen non-stoichiometry
	K. P. Song; H. Schmid; V. Srot; E. Gilardi; G. Gregori; K. Du; J. Maier; P. A. van Aken
	2014
发表期刊	Apl Materials
ISSN	2166-532X
卷号	2 期号:3
摘要	Epitaxial CeO2 films with different thickness were grown on Y2O3 stabilised Zirconia substrates. Reduction of cerium ions at the interface between CeO2 films and yttria stabilised zirconia substrates is demonstrated using aberration-corrected scanning transmission electron microscopy combined with electron energy-loss spectroscopy. It is revealed that most of the Ce ions were reduced from Ce4+ to Ce3+ at the interface region with a decay of several nanometers. Several possibilities of charge compensations are discussed. Irrespective of the details, such local non-stoichiometries are crucial not only for understanding charge transport in such hetero-structures but also for understanding ceria catalytic properties. (C) 2014 Author(s).
部门归属	[song, kepeng ; srot, vesna ; van aken, peter a.] max planck inst intelligent syst, stuttgart ctr electron microscopy, d-70569 stuttgart, germany. [song, kepeng ; du, kui] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [schmid, herbert] inm leibniz inst new mat, d-66123 saarbrucken, germany. [gilardi, elisa ; gregori, giuliano ; maier, joachim] max planck inst solid state res, d-70569 stuttgart, germany. ; van aken, pa (reprint author), max planck inst intelligent syst, stuttgart ctr electron microscopy, heisenbergstr 3, d-70569 stuttgart, germany. ; vanaken@is.mpg.de
关键词	Energy-loss Spectroscopy Fuel-cell Applications Ionic-conductivity Activation-energy Doped Ceria Oxide Transport Ceo2 Superlattices Electrolytes
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72905
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	K. P. Song,H. Schmid,V. Srot,et al. Cerium reduction at the interface between ceria and yttria-stabilised zirconia and implications for interfacial oxygen non-stoichiometry[J]. Apl Materials,2014,2(3).
APA	K. P. Song.,H. Schmid.,V. Srot.,E. Gilardi.,G. Gregori.,...&P. A. van Aken.(2014).Cerium reduction at the interface between ceria and yttria-stabilised zirconia and implications for interfacial oxygen non-stoichiometry.Apl Materials,2(3).
MLA	K. P. Song,et al."Cerium reduction at the interface between ceria and yttria-stabilised zirconia and implications for interfacial oxygen non-stoichiometry".Apl Materials 2.3(2014).