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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hansen, Kent Kammer
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (30/30 displayed)
- 2019Corrosion Study of Cr-Oxide Ceramics Using Rotating Ring Disk Electrode
- 2019Silver Modified Cathodes for Solid Oxide Fuel Cellscitations
- 2018Electrochemical removal of NOx using oxide-based electrodes - A reviewcitations
- 2018Novel Processing of Cathodes for Solid Oxide Fuel Cells
- 2017Determination of the Resistance of Cone-Shaped Solid Electrodescitations
- 2016Effect of pore formers on properties of tape cast porous sheets for electrochemical flue gas purificationcitations
- 2015Hybrid direct carbon fuel cell anode processes investigated using a 3-electrode half-cell setupcitations
- 2015In Situ Studies of Fe4+ Stability in β-Li3Fe2(PO4)3 Cathodes for Li Ion Batteriescitations
- 2015Catalytic Enhancement of Carbon Black and Coal-Fueled Hybrid Direct Carbon Fuel Cellscitations
- 2014Removal of NOx with Porous Cell Stacks with La0.85Sr0.15CoxMn1-xO3+δ-Ce0.9Gd0.1O1.95 Electrodes Infiltrated with BaOcitations
- 2014High Performance Infiltrated Backbones for Cathode-Supported SOFC's
- 2013A combined SEM, CV and EIS study of multi-layered porous ceramic reactors for flue gas purificationcitations
- 2013Fabrication and Characterization of multi-layer ceramics for electrochemical flue gas purificationcitations
- 2012Electrochemical reduction of NO<sub>x</sub>
- 2010Solid Oxide Fuel Cell
- 2010Characterization of (La1-xSrx)(s)MnO3 and Doped Ceria Composite Electrodes in NOx-Containing Atmosphere with Impedance Spectroscopycitations
- 2010Ceria and strontium titanate based electrodes
- 2010Sintering effect on material properties of electrochemical reactors used for removal of nitrogen oxides and soot particles emitted from diesel enginescitations
- 2010The Effect of a CGO Barrier Layer on the Performance of LSM/YSZ SOFC Cathodescitations
- 2009Processing and characterization of porous electrochemical cells for flue gas purificationcitations
- 2009Electrochemical characterization and redox behavior of Nb-doped SrTiO3citations
- 2008Niobium-doped strontium titanates as SOFC anodes
- 2008Strontium Titanate-based Composite Anodes for Solid Oxide Fuel Cellscitations
- 2008Defect and electrical transport properties of Nb-doped SrTiO3citations
- 2007Synthesis of Nb-doped SrTiO3 by a modified glycine-nitrate processcitations
- 2007Gd0.6Sr0.4Fe0.8Co0.2O3-δ: A novel type of SOFC cathodecitations
- 2006Studies of Fe-Co based perovskite cathodes with different A-site cationscitations
- 2005Charge disproportionation in (X0.6Sr0.4)0.99Fe0.8Co0.2O3-δ perovskites (X = La, Pr, Sm, Gd)citations
- 2005LSFM perovskites as cathodes for the electrochemical reduction of NOcitations
- 2001Perovskites as catalysts for the selective catalytic reduction of nitric oxide with propene: Relationship between solid state properties and catalytic activitycitations
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article
Defect and electrical transport properties of Nb-doped SrTiO3
Abstract
This study reports the defect and electrical transport properties of Nb-doped SrTiO3, Samples with various A/B-ratios were synthesized by a modified glycine-nitrate combustion process and evaluated as a constituent in a SOFC anode. The phase purity and defect structure of the materials have been analyzed with SEM, XRD, TGA, and XANES. The electrical conductivity of Nb-doped strontium titanate (Sr0.94Ti0.9Nb0.1O3 - sintered in 9% H-2/N-2 at 1400 degrees C for 12 h) decreased with increasing temperature and showed a phonon scattering conduction mechanism with (sigma>120 S/cm at 1000 degrees C (in 9% H-2/N-2). The results were in agreement with the defect chemistry model of donor-doped SrTiO3 where the charge compensation changes from Sr vacancy compensation to the electronic type when samples are sintered in reducing atmosphere. XANES in combination with TGA indicated that Ti is the only species that is reduced to a lower oxidation state (from Ti4+ to Ti3+). The pre-edge fine structure (PEFS) from the XANES results indicated that Nb improved the overlap of the Ti atomic orbitals and thereby provided one more explanation for the positive effect of Nb on the electronic conductivity of Nb-doped SrTiO3. (C) 2008 Elsevier B.V. All rights reserved.