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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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Nielsen, Jimmy
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2016Performance Factors and Sulfur Tolerance of Metal Supported Solid Oxide Fuel Cells with Nanostructured Ni:GDC Infiltrated Anodescitations
- 2015Performance Factors and Sulfur Tolerance of Metal Supported Solid Oxide Fuel Cells with Nanostructured Ni:GDC Infiltrated Anodescitations
- 2015Investigation of Novel Electrocatalysts for Metal Supported Solid Oxide Fuel Cells - Ru:GDCcitations
- 2014Impedance of SOFC electrodes: A review and a comprehensive case study on the impedance of LSM:YSZ cathodescitations
- 2013Infiltrated SrTiO3:FeCr‐based Anodes for Metal‐Supported SOFCcitations
- 2012Characterization of a well performing and durable Ni:CGO-infiltrated anode for metal-supported SOFC
- 2012Detailed impedance characterization of a well performing and durable Ni:CGO infiltrated cermet anode for metal-supported solid oxide fuel cellscitations
- 2012Infiltrated SrTiO3:FeCr-based anodes for metalsupported SOFC
- 2012Durable and Robust Solid Oxide Fuel Cells
- 2012Break-down of Losses in High Performing Metal-Supported Solid Oxide Fuel Cells
- 2012Characterization of impregnated GDC nano structures and their functionality in LSM based cathodescitations
- 2011SOFC LSM:YSZ cathode degradation induced by moisture: An impedance spectroscopy studycitations
- 2011High performance metal-supported solid oxide fuel cells with Gd-doped ceria barrier layerscitations
- 2011Impedance of porous IT-SOFC LSCF:CGO composite cathodescitations
Places of action
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article
Impedance of porous IT-SOFC LSCF:CGO composite cathodes
Abstract
The impedance of technological relevant LSCF:CGO composite IT-SOFC cathodes was studied over a very wide performance range. This was experimentally achieved by impedance measurements on symmetrical cells with three different microstructures in the temperature range 550–850 °C. In order to account for the impedance spectra of the poor performing cathodes the Finite-Length-Gerischer (FLG) impedance was derived and applied to the impedance data. The FLG impedance describes for a given microstructure the situation where the cathode is made too thin from a cathode development point of view. The moderate performing cathodes showed a slightly suppressed Gerischer impedance, while the impedance spectra of the well performing cathodes showed the presence of an arc due to oxygen gas diffusion. The overall impedance of the well performing cathodes could be described with a slightly suppressed Gerischer impedance element in series with a Finite-Length-Warburg (FLW) impedance element. Finally, the origin to a suppression or distortion of the FLG and the Gerischer impedance was discussed and explored in relation to e.g. numerical simulations on the effect of a slightly distributed diffusion length in the FLG, due to different torturous diffusion pathways within the cathodes.