| 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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Agersted, Karsten
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2019Influence of sintering profile on the microstructure and electronic transport properties of Sr(Ti,Nb)O3 tapes for solid oxide cell applications
- 2018Commercial alkaline earth boroaluminosilicate glasses for sealing solid oxide cell stacks. Part I: Development of glass-ceramic microstructure and thermomechanical propertiescitations
- 2018A Ba-free sealing glass with a high CTE and excellent interface stability optimized for SOFC/SOEC stack applicationscitations
- 2018A Ba-free sealing glass with a high CTE and excellent interface stability optimized for SOFC/SOEC stack applicationscitations
- 2018Commercial alkaline earth boroaluminosilicate glasses for sealing solid oxide cell stacks Part II: Characterization of devitrification and glass-ceramic phase assemblagescitations
- 2017Lattice constant measurement from electron backscatter diffraction patternscitations
- 2017Investigation of Cu 2 ZnSnS 4 nanoparticles for thin-film solar cell applicationscitations
- 2017A Novel SOFC/SOEC Sealing Glass with a Low SiO2 Content and a High Thermal Expansion Coefficient
- 2017Investigation of Cu2ZnSnS4 nanoparticles for thin-film solar cell applicationscitations
- 2017Mechanical properties of biaxially strained poly(L-lactide) tubes: Strain rate and temperature dependencecitations
- 2017A Novel SOFC/SOEC Sealing Glass with a Low SiO2 Content and a High Thermal Expansion Coefficientcitations
- 2017A Novel SOFC/SOEC Sealing Glass with a Low SiO 2 Content and a High Thermal Expansion Coefficientcitations
- 2016Characterization Of Biaxial Strain Of Poly(L-Lactide) Tubescitations
- 2015Ultrafast microwave hydrothermal synthesis and characterization of Bi1-xLaxFeO3 micronized particlescitations
- 2015Environmental TEM study of the dynamic nanoscaled morphology of NiO/YSZ during reductioncitations
- 2014NiO/YSZ Reduction for SOFC/SOEC Studied In Situ by Environmental Transmission Electron Microscopycitations
- 2014Fracture toughness of glass sealants for solid oxide fuel cell applicationcitations
- 2014Fabrication and sealing performance of rare-earth containing glass–ceramic seals for intermediate temperature solid oxide fuel cell applicationscitations
- 2014Effects of thermal aging on thermo-mechanical behavior of a glass sealant for solid oxide cell applicationscitations
- 2014Sintering and Electrical Characterization of La and Nb Co‐doped SrTiO3 Electrode Materials for Solid Oxide Cell Applicationscitations
- 2013Ion beam polishing for three-dimensional electron backscattered diffractioncitations
- 2013Two and three dimensional electron backscattered diffraction analysis of solid oxide cells materials
- 2013Bonding characteristics of glass seal/metallic interconnect for SOFC applications: Comparative study on chemical and mechanical properties of the interface
- 2013Bonding characteristics of glass seal/metallic interconnect for SOFC applications: Comparative study on chemical and mechanical properties of the interface
- 2012Effects of focused ion beam milling on electron backscatter diffraction patterns in strontium titanate and stabilized zirconiacitations
- 2012Microstructural and electrical characterization of Nb-doped SrTiO3–YSZ composites for solid oxide cell electrodescitations
- 2010A method of producing a multilayer barrier structure for a solid oxide fuel cell
- 2007Mechanical Behaviour of Glassy Composite Seals for IT-SOFC Applicationcitations
- 2006Testing of Ni-plated ferritic steel interconnect in SOFC stackscitations
Places of action
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article
Environmental TEM study of the dynamic nanoscaled morphology of NiO/YSZ during reduction
Abstract
The reduction of a metal oxide is often a critical preparation step for activating catalytic behaviour. This study addresses the reduction process of NiO in pure form and in a composite of NiO/yttria-stabilized zirconia (YSZ) in hydrogen relevant for solid oxide electrochemical cells by comparing results from environmental transmission electron microscopy (ETEM) with thermogravimetric analysis (TGA). The temperature dependent reduction profiles obtained from TGA confirm an inhibitive effect from YSZ on the NiO reduction. The ETEM images show the growth of Ni in decaying NiO and reveal the nanoscale morphological changes such as pore formation in NiO above 280°C and densification and collapse of the pore structures above 400°C. The accelerated Ni front in NiO illustrates the auto catalysis of the reaction. A rapid temperature ramping from room temperature to 780°C in hydrogen in 1 second resulted in immediate morphological changes at the nanoscale from dense NiO to dense Ni. The analysis suggests that the inhibitive effect of YSZ on the NiO reduction reaction is not due to a direct local interaction between YSZ and NiO, but instead due to gas and/or mass transport limitations.© 2014 Elsevier B.V. All rights reserved.