| 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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Koch, Søren
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Publications (4/4 displayed)
- 2017Determination of the Resistance of Cone-Shaped Solid Electrodescitations
- 2017Determination of the Resistance of Cone-Shaped Solid Electrodescitations
- 2016Effects of strong cathodic polarization of the Ni-YSZ interfacecitations
- 2006Electrode activation and passivation of solid oxide fuel cell electrodescitations
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article
Effects of strong cathodic polarization of the Ni-YSZ interface
Abstract
Long-term strong cathodic polarization experiments of down to -2.4 V vs. E° (O 2 ) of the Ni-YSZ interface were performed at 900°C in 97% H 2 /3% H 2 O on model electrodes. The Ni-YSZ interface underwent extensive changes and a large affected volume with a complex microstructure and phase distribution resulted. Impedance spectroscopy shows initial decrease but later increase in the series resistance and polarization resistance during the 140-160 h of polarization, and significant inductive behavior. An intermetallic Ni-Zr phase that formed during polarization was preserved when the polarization was kept during cooling, and was identified post-mortem by transmission electron microscopy as Ni7Zr 2 . ZrO 2 nanoparticles were formed on the Ni-gas surface next to the Ni-YSZ-gas triple phase boundary. Explanations of the observed features are offered based on electron microscopy and impedance spectroscopy.