Journal article
Investigating phase behavior and structural changes in NiO/Ni-YSZ composite with monochromatic in-situ 2D and static 3D neutron imaging
University of Bayreuth1
Paul Scherrer Institute2
Helmholtz Centre Berlin for Materials and Energy3
Department of Energy Conversion and Storage, Technical University of Denmark4
Mixed Conductors, Department of Energy Conversion and Storage, Technical University of Denmark5
Imaging and Structural Analysis, Department of Energy Conversion and Storage, Technical University of Denmark6
Xnovo Technology ApS7
In this work, we report neutron imaging studies of redox cycling of NiO/Ni-8YSZ (nickel/nickel oxide – yttria stabilized zirconia) composite used for electrodes in solid oxide electrochemical cells for efficient energy conversion (power-to-gas and vice versa) purposes (i.e. for anodes in solid oxide fuel cells, and for cathodes in solid oxide electrolysis cells).
Results of in-situ 2D and ex-situ 3D measurements are presented. In-situ observation of phase transition between NiO and Ni were performed at the test Beamline for neutron Optics and other Applications (BOA) at the continuous neutron source SINQ of Paul Scherrer Institut (PSI, Switzerland) by means of monochromatic neutron imaging, and post mortem monochromatic neutron tomography was performed at Helmholtz Zentrum Berlin (HZB) at the BER II reactor using the CONRAD-2 imaging instrument.
Combining both time resolved radiography and post mortem tomography provides complementary information about the reduction/oxidation degree and e.g. crack evolution in the investigated system and it is therefore possible to acquire information about the rate of chemical reactions and spatial evolution of phases and morphological features.
Language: | English |
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Year: | 2018 |
Pages: | 24-18 |
ISSN: | 18732135 and 09214526 |
Types: | Journal article |
DOI: | 10.1016/j.physb.2017.11.026 |
ORCIDs: | Frandsen, Henrik Lund , Lacatusu, Monica-Elisabeta , De Angelis, Salvatore and Kuhn, Luise Theil |