| 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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Chatzichristodoulou, Christodoulos
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (37/37 displayed)
- 2024Operando Electron Microscopy and Impedance Analysis of Solid Oxide Electrolysis and Fuel Cellscitations
- 2021Development of high-temperature electrochemical TEM and its application on solid oxide electrolysis cells
- 2021Development of high-temperature electrochemical TEM and its application on solid oxide electrolysis cells
- 2020Polysulfone-polyvinylpyrrolidone blend membranes as electrolytes in alkaline water electrolysiscitations
- 2020(Invited) Advanced Alkaline Electrolysis Cells for the Production of Sustainable Fuels and Chemicals
- 2017Oxygen transport properties of tubular Ce 0.9 Gd 0.1 O 1.95 -La 0.6 Sr 0.4 FeO 3−d composite asymmetric oxygen permeation membranes supported on magnesium oxidecitations
- 2017Ionic/Electronic Conductivity, Thermal/Chemical Expansion and Oxygen Permeation in Pr and Gd Co-Doped Ceria PrxGd0.1Ce0.9-xO1.95-δcitations
- 2017Chemical and Electrochemical Properties of La0.58Sr0.4Fe0.8Co0.2O3-δ (LSCF) Thin Films upon Oxygen Reduction and Evolution Reactions
- 2017Oxygen transport properties of tubular Ce0.9Gd0.1O1.95-La0.6Sr0.4FeO3−d composite asymmetric oxygen permeation membranes supported on magnesium oxidecitations
- 2016Relaxation of stresses during reduction of anode supported SOFCs
- 2016High Temperature and Pressure Alkaline Electrochemical Reactor for Conversion of Power to Chemicals
- 2016Evolution of the electrochemical interface in high-temperature fuel cells and electrolyserscitations
- 2016Design and optimization of porous ceramic supports for asymmetric ceria-based oxygen transport membranescitations
- 2016Design and optimization of porous ceramic supports for asymmetric ceria-based oxygen transport membranescitations
- 2016New Hypothesis for SOFC Ceramic Oxygen Electrode Mechanismscitations
- 2016High Temperature Alkaline Electrolysis Cells with Metal Foam Based Gas Diffusion Electrodescitations
- 2015Size of oxide vacancies in fluorite and perovskite structured oxidescitations
- 2015Need for In Operando Characterization of Electrochemical Interface Features
- 2015Kinetics of CO/CO 2 and H 2 /H 2 O reactions at Ni-based and ceria-based solid-oxide-cell electrodescitations
- 2014Composite Fe - BaCe0.2Zr0.6Y0.2O2.9 Anodes for Proton Conductor Fuel Cellscitations
- 2014Composite Fe - BaCe 0.2 Zr 0.6 Y 0.2 O 2.9 Anodes for Proton Conductor Fuel Cellscitations
- 2014Power to fuel using electrolysis and CO2 capture
- 2014TOF-SIMS characterization of impurity enrichment and redistribution in solid oxide electrolysis cells during operationcitations
- 2014High performance and highly durable infiltrated cathodes using Pr-modified Ce0.9Gd0.1O1.95 backbone
- 2014High performance and highly durable infiltrated cathodes using Pr-modified Ce 0.9 Gd 0.1 O 1.95 backbone
- 2013Defect chemistry, thermomechanical and transport properties of (RE2−xSrx)0.98(Fe0.8Co0.2)1−yMgyO4−δ (RE = La, Pr)citations
- 2013Pressurized HxCyOz Cells at ca. 250 °C: Potential and Challenges
- 2013Infiltration of ionic-, electronic- and mixed-conducting nano particles into La0.75Sr0.25MnO3–Y0.16Zr0.84O2 cathodes – A comparative study of performance enhancement and stability at different temperaturescitations
- 2013High temperature and pressure alkaline electrolysis
- 2013Alkaline electrolysis cell at high temperature and pressure of 250 °C and 42 barcitations
- 2013Pressurized H x C y O z Cells at ca. 250 °C: Potential and Challenges
- 2013Defect chemistry, thermomechanical and transport properties of (RE 2 - x Sr x ) 0.98 (Fe 0.8 Co 0.2 ) 1 - y Mg y O 4 - δ (RE = La, Pr)citations
- 2013Infiltration of ionic-, electronic- and mixed-conducting nano particles into La 0.75 Sr 0.25 MnO 3 –Y 0.16 Zr 0.84 O 2 cathodes – A comparative study of performance enhancement and stability at different temperaturescitations
- 2012Characterization of impregnated GDC nano structures and their functionality in LSM based cathodescitations
- 2011Evaluation of thin film ceria membranes for syngas membrane reactors—Preparation, characterization and testingcitations
- 2010Oxygen Nonstoichiometry and Defect Chemistry Modeling of Ce0.8Pr0.2O2-deltacitations
- 2010Defect Chemistry and Thermomechanical Properties of Ce0.8PrxTb0.2-xO2-deltacitations
Places of action
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document
Development of high-temperature electrochemical TEM and its application on solid oxide electrolysis cells
Abstract
Summary form only given. We are transforming a transmission electron microscope (TEM) into a generic high-temperature electrochemical workstation for solid oxide electrolysis and fuel cell (SOEC/SOFC) materials. We focus on the combination of TEM and electrochemical impedance spectroscopy (EIS). EIS is today one of the most powerful characterization methods for distinguishing electrochemical resistances for different processes (electronic conductivity, ionic conductivity, gas diffusion, catalytic reactions etc.). SOEC and SOFC are a promising technologies for efficient green energy storage by conversion of electrical energy to chemical energy by SOEC and back to electrical energy by SOFC. SOECs and SOFCs operate in reactive gasses (O2, H2O, CO2) at high temperatures, typically ≥ 800°C), which makes it challenging to study them via in situ TEM. In addition, SOECs are composed of hard and brittle ceramics and can be difficult to thin for electron transparency and manipulate without breaking. However, post mortem electron microscopy does not give direct insight into time, temperature and electrical potential dependencies of cell degradation, and in situ characterization is therefore needed. Here we present different approaches for designing high-temperature electrochemical TEM experiments. In one study, we are model SOEC/SOFCs composed of materials commonly used in state-of-the-art SOEC/SOFCs. The cells are prepared by pulsed laser deposition (PLD). In another study the samples are electrospun gadolinia-doped ceria (CGO) nanofibers representing electrode and electrolyte materials in an SOEC/SOFC. For the experiments, an ETEM is used in combination with custom-made and commercial heating/biasing TEM holders and a potentiostat and impedance analyzer for measuring I-V response as well as EIS data. Observations include segregation and grain formation, accelerate as a function of temperature, and is promoted by the presence of O2. Structural degradations are observed both as a response to heating and applied polarization.