| People | Locations | Statistics |
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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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Sun, Xiufu
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2023Solid Oxide Electrochemical Cells for Nitrogen and Oxygen Production
- 2022Metal Supported Electrolysis Cellscitations
- 2021Ni migration in solid oxide cell electrodes:Review and revised hypothesiscitations
- 2021Ni migration in solid oxide cell electrodes: Review and revised hypothesiscitations
- 2021Ni migration in solid oxide cell electrodes: Review and revised hypothesiscitations
- 2020Co-electrolysis of steam and carbon dioxide in large area solid oxide cells based on infiltrated mesoporous oxygen electrodescitations
- 2020Metal Supported SOFCs for Mobile Applications using Hydrocarbon Fuelscitations
- 2020Review of Ni migration in SOC electrodes
- 2020Review of Ni migration in SOC electrodes
- 2019Comprehensive Hypotheses for Degradation Mechanisms in Ni-Stabilized Zirconia Electrodescitations
- 2019Comprehensive Hypotheses for Degradation Mechanisms in Ni-Stabilized Zirconia Electrodescitations
- 2019Internal reforming on Metal supported SOFCscitations
- 2018Diffusion rates of reactants and components in solid oxide cells
- 2017Investigation of a Spinel-forming Cu-Mn Foam as an Oxygen Electrode Contact Material in a Solid Oxide Cell Single Repeating Unitcitations
- 2014TOF-SIMS characterization of impurity enrichment and redistribution in solid oxide electrolysis cells during operationcitations
Places of action
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article
Ni migration in solid oxide cell electrodes: Review and revised hypothesis
Abstract
Severe degradation of Ni-YSZ (yttria stabilized zirconia) electrodes of solid oxide cells (SOCs) due to Ni migration is well known, but the literature contains apparent contradictions. The mechanisms are still under debate. Fine structured Ni-YSZ composite electrodes often degrade at operation temperature (700–950°C), because Ni particles lose electrical contact with each other as larger Ni-particles grow on the expense of smaller ones. Another type of Ni migration, which may be very damaging, is the relocation of Ni in the most active part of the Ni-YSZ cermet electrode next to the dense YSZ electrolyte. Emphasis is put on the migration of Ni away from the YSZ electrolyte in solid oxide electrolysis cells (SOECs). This is seen as an important obstacle to the commercialization of SOC systems.<br/><br/>Apart from temperature, degradation of Ni-YSZ electrodes in SOCs is related to Ni-YSZ electrode overpotential and the local redox potential of the gas mixture inside the porous Ni-YSZ electrode. A unifying Ni migration mechanism is proposed, and methods of alleviating the electrode degradation are discussed. The hypothesis is that Ni migrates via surface diffusion of Ni(OH)<sub>x</sub> species below ca. 800°C and via Ni(OH)<sub>x</sub> species in gas phase above ca. 900°C.