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Processing and Characterization of Electrolytes Based on Doped Lanthanum Gallates for IT-SOFCs.
Traina, Karl; Cloots, Rudi
2004In Bossel, Ulf (Ed.) Sixth European Solid Oxide Fuel Cell Forum - Proceedings
Peer reviewed
 

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Processing and Characterization of Electrolytes Based on Doped Lanthanum Gallates for IT-SOFCs.pdf
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Keywords :
Electrolyte impedance spectroscopy; doped lanthanum gallate; solid state reaction
Abstract :
[en] Nowadays a huge interest exists towards the SOFC’s coming out on the large-scale market because of the variety of their advantageous applications. Clean conversion of chemical energy to electricity, co-generation of electricity and chemicals, low levels of noise and vibration, flexibility regarding the fuels used, high efhciency are evidences of this statement. One of the problems that still exist in this field concerns the effective and cost reasonable operation of SOFCs. In this context the lowering of the operation temperatures could be one of the solutions to this important issue. Because of their excellent oxide—ion conductivity and stability over a broad range of oxygen partial pressure, the appropriate doped lanthanum gallates are promising alternative electrolytes for intermediate temperature SOFCs (lT-SOFCs). The aim of this work is to present the experimental results, obtained in a close collaboration between the two Universities. The objects could be briefly outlined, as follows: to process planar electrolytes with different thicknesses, based on doped LaGaO3 via traditional ceramic techniques; to study the influence of the dopants type and their amount on the properties of electrolyte materials synthesized; to investigate the phase formation and phase composition in correlation with the phase diagrams, as well as the microstructure and elements distribution. A special emphasis was placed upon the electrochemical characterization in broad temperature range, using impedance spectroscopy. The results obtained have been discussed in details and conclusions have been drawn by common efforts of the two working groups.
Disciplines :
Chemistry
Author, co-author :
Traina, Karl ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale
Cloots, Rudi ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale - Doyen de la Faculté des Sciences
Language :
English
Title :
Processing and Characterization of Electrolytes Based on Doped Lanthanum Gallates for IT-SOFCs.
Publication date :
June 2004
Event name :
Sixth European Solid Oxide Fuel Cell Forum
Event organizer :
Ulf Bossel
Event place :
Lucerne, Switzerland
Event date :
28 june - 2 july 2004
Audience :
International
Main work title :
Sixth European Solid Oxide Fuel Cell Forum - Proceedings
Editor :
Bossel, Ulf
Other collaborator :
Mogensen, Mogen
Publisher :
European Fuel Cell Forum, Oberrohrdorf, Switzerland
ISBN/EAN :
3-905592-15-0
Pages :
1143-1151
Peer reviewed :
Peer reviewed
Funders :
CGRI - Commissariat général aux Relations internationales [BE]
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since 27 September 2009

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