| 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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Mølhave, Kristian S.
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2024Microheater Controlled Crystal Phase Engineering of Nanowires Using In Situ Transmission Electron Microscopycitations
- 2024Microheater Controlled Crystal Phase Engineering of Nanowires Using In Situ Transmission Electron Microscopycitations
- 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
- 2021Initiation and Progression of Anisotropic Galvanic Replacement Reactions in a Single Ag Nanowirecitations
- 2020Complex Aerosol Characterization by Scanning Electron Microscopy Coupled with Energy Dispersive X-ray Spectroscopycitations
- 2018Influence of Cetyltrimethylammonium Bromide on Gold Nanocrystal Formation Studied by in Situ Liquid Cell Scanning Transmission Electron Microscopycitations
- 2017Direct bonding of ALD Al2O3 to silicon nitride thin filmscitations
- 2016Controlling nanowire growth through electric field-induced deformation of the catalyst dropletcitations
- 2016In-Situ Transmission Electron Microscopy on Operating Electrochemical Cells
- 2016Effect of Synthesis Parameters on the Structure and Magnetic Properties of Magnetic Manganese Ferrite/Silver Composite Nanoparticles Synthesized by Wet Chemistry Methodcitations
- 2015Feasibility of the development of reference materials for the detection of Ag nanoparticles in food: neat dispersions and spiked chicken meatcitations
- 2011Titanium tungsten coatings for bioelectrochemical applications
- 2010Customizable in situ TEM devices fabricated in freestanding membranes by focused ion beam millingcitations
- 2008Epitaxial Integration of Nanowires in Microsystems by Local Micrometer Scale Vapor Phase Epitaxycitations
- 2003Soldering of Nanotubes onto Microelectrodescitations
- 2003Solid gold nanostructures fabricated by electron beam depositioncitations
- 2001Customizable nanotweezers for manipulation of free-standing nanostructurescitations
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.