Solid oxide fuel cells (SOFCs) are an emerging technology in hydrogen-based energy production, thanks to their high performance, high power density, high efficiency, and reduced emissions over conventional power generation technologies. For these reasons, a great attention has been addressed in these years to SOFCs materials and technologies. An important issue related to the utilization of SOFCs as power generators is the capability of SOFCs materials to resist to thermal cycles in different atmospheres. The present work proposes an experimental investigation on the reduction process of anode into cermet, which is the best candidate for anode material in SOFCs, its reoxidation into and the following rereduction into . Anodes with different ratios were analyzed through different physical and chemical techniques, such as scanning electron microscopy (SEM) and porosity measurements. The reduction, reoxidation and rereduction behaviors were studied by thermogravimetric analysis (TGA) in a unique long experiment, at different temperatures in the range of 700–. The kinetics of the processes was studied and thermodynamic parameters such as activation energy were also calculated and correlated to the compositions and microstructure of the materials. The study clears up the effect of anode composition and microstructure on the reduction, reoxidation, and rereduction processes.
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November 2006
This article was originally published in
Journal of Fuel Cell Science and Technology
Technical Briefs
Reduction and Reoxidation Processes of Composite for Solid Oxide Fuel Cell Anodes
Stefano Modena,
Stefano Modena
ITC-Irst,
Center for Scientific and Technological Research
, v. Sommarive, 18 – 38050 Povo (TN), Italy
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Sergio Ceschini,
Sergio Ceschini
ITC-Irst,
Center for Scientific and Technological Research
, v. Sommarive, 18 – 38050 Povo (TN), Italy
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Andrea Tomasi,
Andrea Tomasi
ITC-Irst,
Center for Scientific and Technological Research
, v. Sommarive, 18 – 38050 Povo (TN), Italy
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Dario Montinaro,
Dario Montinaro
Department of Materials Engineering and Industrial Technologies,
University of Trento
, v. Mesiano, 77 – 38050 Trento, Italy
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Vincenzo M. Sglavo
Vincenzo M. Sglavo
Department of Materials Engineering and Industrial Technologies,
University of Trento
, v. Mesiano, 77 – 38050 Trento, Italy
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Stefano Modena
ITC-Irst,
Center for Scientific and Technological Research
, v. Sommarive, 18 – 38050 Povo (TN), Italy
Sergio Ceschini
ITC-Irst,
Center for Scientific and Technological Research
, v. Sommarive, 18 – 38050 Povo (TN), Italy
Andrea Tomasi
ITC-Irst,
Center for Scientific and Technological Research
, v. Sommarive, 18 – 38050 Povo (TN), Italy
Dario Montinaro
Department of Materials Engineering and Industrial Technologies,
University of Trento
, v. Mesiano, 77 – 38050 Trento, Italy
Vincenzo M. Sglavo
Department of Materials Engineering and Industrial Technologies,
University of Trento
, v. Mesiano, 77 – 38050 Trento, ItalyJ. Fuel Cell Sci. Technol. Nov 2006, 3(4): 487-491 (5 pages)
Published Online: March 17, 2006
Article history
Received:
November 30, 2005
Revised:
March 17, 2006
Citation
Modena, S., Ceschini, S., Tomasi, A., Montinaro, D., and Sglavo, V. M. (March 17, 2006). "Reduction and Reoxidation Processes of Composite for Solid Oxide Fuel Cell Anodes." ASME. J. Fuel Cell Sci. Technol. November 2006; 3(4): 487–491. https://doi.org/10.1115/1.2349533
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