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Structure, Electrical and Oxygen Transport Properties of Fe-Doped SrCoO3−δ Perovskites
Jian-xin Yia*,Shao-jie Fengb,Qing Zengc,Chu-sheng Chenc
Author NameAffiliation
Jian-xin Yia* State Key Laboratory of Fire Science, Department of Safety Science and Engineering, University of Science and Technology of China, Hefei 230026, China 
Shao-jie Fengb School of Materials Science and Chemical Engineering, Anhui University of Architecture, Hefei 230022, China 
Qing Zengc CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China 
Chu-sheng Chenc CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China 
Abstract:
The structure-property relationship of Fe-doped SrCoO3-δ was studied. With increase of Fe content in SrCo1-xFexO3-δ from x=0 to x=0.2, the phase composition changed progressively in the order of hexagonal→brownmillerite (main)+hexagonal→cubic (main)+brownmillerite→single cubic phase. Transition between the hexagonal/brownmillerite phase and the cubic phase took place with variation of the operating conditions, and was associated with remarkable changes in the electrical conductivity and oxygen permeation flux.
Key words:  Perovskite  Ceramic membrane  Electrical  Oxygen transport  Structure
FundProject:
Fe掺杂SrCoO3−δ钙钛矿的结构、电及氧输运性能
易建新a*,冯绍杰b,曾庆c,陈初升c
摘要:
采用XRD、DTA、电导和氧渗透测量等手段研究了Fe掺杂SrCoO3-δ钙钛矿的结构-性能关系.结果表明,随着Fe含量由0增加到0.2,材料的相组成逐渐发生六方相→brownmillerite主相+六方相→立方相主相+六方相→纯立方相的变化.随着温度变化,六方相及brownmillerite相与立方相之间发生转变;与此相应,材料的电导率和氧渗透率发生了显著变化.
关键词:  钙钛矿  陶瓷膜    氧输运  结构
DOI:10.1063/1674-0068/28/cjcp1411192
分类号: