Electrical and structural properties of Nb-doped SrTiO3 ceramics

被引：80
作者：
Karczewski, J. [1 ]
Riegel, B. [1 ]
Gazda, M. [1 ]
Jasinski, P. [2 ]
Kusz, B. [1 ]
机构：
[1] Gdansk Univ Technol, Fac Appl Phys & Math, Gdansk, Poland
[2] Gdansk Univ Technol, Fac Elect Telecommun & Informat, Gdansk, Poland
来源：
JOURNAL OF ELECTROCERAMICS | 2010年 / 24卷 / 04期
关键词：
Electrical conductivity; Nb-doped Strontium titanate; Anode materials; Solid oxide fuel cell; POTENTIAL ANODE MATERIALS; TRANSPORT-PROPERTIES; STRONTIUM-TITANATE; CONDUCTIVITY; LANTHANUM; DEFECT;
D O I：
10.1007/s10832-009-9578-7
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Niobium-doped strontium titanate synthesized via conventional solid-state reaction has been studied. Influence of niobium content on the lattice parameters and electrical conductivity has been reported. Various reduction conditions have been investigated. For samples reduced in hydrogen at 1400A degrees C, a transition from thermally activated to metallic behavior has been observed. Maximum electrical conductivity (ca. 55 Scm(-1) at 650A degrees C) has been observed for the SrTi0.98Nb0.02O3-delta sample. The relation of electrical conductivity with the porosity of the samples has been shown.
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页码：326 / 330
页数：5
相关论文
共 28 条
[1]   Advanced anodes for high-temperature fuel cells [J].
Atkinson, A ;
Barnett, S ;
Gorte, RJ ;
Irvine, JTS ;
Mcevoy, AJ ;
Mogensen, M ;
Singhal, SC ;
Vohs, J .
NATURE MATERIALS, 2004, 3 (01) :17-27
[2]   ELECTRICAL-CONDUCTIVITY IN LANTHANUM-DOPED STRONTIUM-TITANATE [J].
BALACHANDRAN, U ;
EROR, NG .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1982, 129 (05) :1021-1026
[3]  
BALACHANDRAN U, 1981, J AM CERAM SOC, V64, pC75, DOI 10.1111/j.1151-2916.1981.tb10288.x
[4]   Electrochemical characterization and redox behavior of Nb-doped SrTiO3 [J].
Blennow, Peter ;
Hansen, Kent K. ;
Wallenberg, L. Reine ;
Mogensen, Mogens .
SOLID STATE IONICS, 2009, 180 (01) :63-+
[5]   Defect and electrical transport properties of Nb-doped SrTiO3 [J].
Blennow, Peter ;
Hagen, Anke ;
Hansen, Kent K. ;
Wallenberg, L. Reine ;
Mogensen, Mogens .
SOLID STATE IONICS, 2008, 179 (35-36) :2047-2058
[6]   SELF-COMPENSATION IN LANTHANUM-DOPED STRONTIUM-TITANATE [J].
EROR, NG ;
BALACHANDRAN, U .
JOURNAL OF SOLID STATE CHEMISTRY, 1981, 40 (01) :85-91
[7]   Oxide anode materials for solid oxide fuel cells [J].
Fergus, Jeffrey W. .
SOLID STATE IONICS, 2006, 177 (17-18) :1529-1541
[8]   Oxygen losses and electrical conductivity of SrTi1-yNbyO3+δ materials [J].
Ferreira, AAL ;
Abrantes, JCC ;
Labrincha, JA ;
Frade, JR .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1999, 19 (6-7) :773-776
[9]   Influence of sintering conditions on microstructure and electrical conductivity of yttrium-substituted SrTiO3 [J].
Fu, Q. X. ;
Mi, S. B. ;
Wessel, E. ;
Tietz, F. .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2008, 28 (04) :811-820
[10]   Conductivity of SMO3 based oxides in the reducing atmosphere at high temperature [J].
Hashimoto, S. ;
Poulsen, F. W. ;
Mogensen, M. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 439 (1-2) :232-236
123