Searched for: subject%3A%22fluorides%22
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Peng, Linhan (author)
This study explores the potential of metal oxide fluorides as cathode materials for solid-state fluoride-ion batteries (FIBs), aiming to combine the stability of intercalation-based electrode materials with the high energy density of conversion-based materials. Through comprehensive experimental investigations using techniques such as...
master thesis 2024
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Breed, Paul (author)
This study aims to assess the suitability of iron oxyfluoride (FeOF) as cathode material for fluoride-ion batteries based on the electrochemical performance and fluorination capability of ferrous oxide (FeO), as well as the defluorination of FeOF. Due to the pressing demand for electrochemical storage, alternatives to the widespread lithium-ion...
master thesis 2023
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Tosolin, A. (author), Vigier, J. F. (author), Mastromarino, S. (author), Konings, R. J.M. (author), Luzzi, L. (author), Beneš, O. (author)
Phase equilibria in the ThF<sub>4</sub>-PuF<sub>3</sub> system were measured by differential scanning calorimetry. Samples were encapsulated to prevent leakage during the measurements and to prevent fluoride contamination of the instrument. Formation of intermediate compounds and solid solutions was investigated by X-ray diffraction. A...
journal article 2023
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van Zeijl, Jonne (author)
In the coming energy transition, the availability of reliable and affordable energy storage will be of vital importance. Battery storage is a large factor in the energy storage sector, and current battery storage is dominated by lithium-based batteries. However, lately, alternatives to lithium have been given renewed attention, due to the...
master thesis 2022
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Davis, L.G. (author), Hania, Ralph (author), Boomstra, Dennis (author), Rossouw, Dillon (author), Charpin-Jacobs, Florence (author), Uhlir, Jan (author), Maracek, Martin (author), Beckers, Helmut (author), Riedel, Sebastian (author)
Radiolytic fluorine gas production at temperatures of 40°C to 60°C was investigated for the fluoride salts LiF, BeF<sub>2</sub>, UF<sub>4</sub>, ThF<sub>4</sub>, and 71.7LiF-16BeF<sub>2</sub>-12.3UF<sub>4</sub> (FliBe-UF<sub>4</sub>) by gamma irradiation of powdered samples using spent fuel elements from the High Flux Reactor (HFR) Petten as...
journal article 2022
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Ocadiz flores, J.A. (author)
Molten salts are a class of ionic liquids which have in recent years been the focus of extensive fundamental research given that they are a versatile class of reaction media with a variety of appealing thermophysical and thermochemical properties (e.g. melting points, heat capacities, vapor pressures, densities, thermal conductivities, etc..)...
doctoral thesis 2021
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Guo, X. (author)
Rare earth elements (REEs) are a group of 17 metallic elements, including 15 lanthanides, scandium and yttrium, which have remarkably similar chemical and physical properties. Nowadays, rare earth metals are widely used in such fields as electronics, petroleum, and metallurgy. Rare earth elements are considered as vitamin to modern industry and...
doctoral thesis 2021
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Wei, L. (author), Zietzschmann, F.E. (author), Rietveld, L.C. (author), van Halem, D. (author)
Millions of people worldwide are exposed to excessive concentrations of fluoride (F<sup>−</sup>) from groundwater sources. Ca-Al-CO<sub>3</sub> layered double hydroxides (LDHs) have shown promising defluoridation efficiency; however, defluoridation by Ca-Al-CO<sub>3</sub> LDHs is highly pH sensitive. This study showed that simultaneous...
journal article 2021
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Wei, L. (author), Li, Z. (author), Ye, G. (author), Rietveld, L.C. (author), van Halem, D. (author)
Excessive F<sup>-</sup> in drinking water due to natural and anthropogenic activities is a serious health hazard affecting humans worldwide. In this study, a comparative assessment was made of eight mineral-based materials with advantageous structural properties for F<sup>-</sup> uptake: layered-double-hydroxides (LDHs), geopolymers,...
journal article 2021
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Dumaire, T. (author), Konings, R. (author), Smith, A.L. (author)
Understanding the corrosion mechanisms and the effect of corrosion products on the basic properties of the salt (e.g., melting point, heat capacity) is fundamental for the safety assessment and durability of molten salt reactor technology. This work focused on the thermodynamic assessment of the CrF2−CrF3 system and the binary systems of...
journal article 2021
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Nunes-Pereira, João (author), Costa, Pedro (author), Fernandes, Liliana (author), Carvalho, Estela O. (author), Fernandes, Margarida M. (author), Carabineiro, Sónia A.C. (author), Buijnsters, J.G. (author), Tubio, Carmen R. (author), Lanceros-Mendez, Senentxu (author)
Environmentally resilient antimicrobial coatings are becoming increasingly required for a wide range of applications. For this purpose, nanocomposite thin films of poly(vinylidene fluoride) (PVDF) filled with several types of functionalized nanodiamonds (NDs) were processed by solvent casting. The effects of ND inclusion and functionalization...
journal article 2020
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Schrama, F.N.H. (author), Ji, Fuzhong (author), Hunt, Adam (author), Beunder, Elisabeth M. (author), Woolf, Rhian (author), Tuling, Alison (author), Warren, Peter (author), Sietsma, J. (author), Boom, R. (author), Yang, Y. (author)
To lower the iron losses of the hot metal desulphurisation (HMD) process, slag modifiers can be added to the slag. Slag modifiers decrease the apparent viscosity of the HMD slag. Most common slag modifiers in industry contain fluoride as a fluidiser. However, fluoride leads to a higher magnesium consumption and has health, safety and...
journal article 2020
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Wei, L. (author), Zietzschmann, F.E. (author), Rietveld, L.C. (author), van Halem, D. (author)
In this study, F<sup>−</sup> removal by Ca–Al–CO<sub>3</sub> layered double hydroxides (LDHs) was investigated at environmentally-relevant concentration ranges (2–12 mg/L) to below the WHO guideline, with an emphasis on the effect of LDHs’ modification, as well as the effects of initial F<sup>−</sup> concentration, adsorbent dose, pH,...
journal article 2020
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Smith, A.L. (author), Capelli, E. (author), Konings, R. (author), Gheribi, A. E. (author)
The (Li,Be)F<sub>x</sub> fluoride salt is an ionic liquid with complex non-ideal thermodynamic behaviour due to the formation of short-range order. In this work, we explore the relationship between local structure, thermo-physical and thermodynamic properties in this system using a multidisciplinary approach that couples molecular dynamics...
journal article 2020
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Tosolin, A. (author), Colle, J. Y. (author), Mastromarino, S. (author), Souček, P. (author), Luzzi, L. (author), Konings, R. (author), Beneš, O. (author)
The mixture LiF-ThF<sub>4</sub>-UF<sub>4</sub>-PuF<sub>3</sub> (77.5–6.6-12.3–3.6 mol%), a fuel option for the Molten Salt Fast Reactor (MSFR), has been measured by differential scanning calorimetry (DSC) for determination of phase transitions, and by Knudsen effusion mass spectrometry (KEMS) for measurement of partial vapour pressures. The...
journal article 2019
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Capelli, E. (author), Konings, R. (author)
The complete thermodynamic description of the niobium-fluorine system is presented for the first time in this work. It results from a critical evaluation of the available experimental data and new thermodynamic calculations. In total, three niobium fluoride solid phases (NbF<sub>3</sub>, NbF<sub>4</sub> and NbF<sub>5</sub>) and seven gaseous...
journal article 2018
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Capelli, E. (author), Beneš, O. (author), Konings, R. (author)
The present study describes the full thermodynamic assessment of the Li,Cs,Th//F,I system. The existing database for the relevant fluoride salts considered as fuel for the Molten Salt Reactor (MSR) has been extended with two key fission products, cesium and iodine. A complete evaluation of all the common-ion binary and ternary sub-systems of...
journal article 2018
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Smith, A.L. (author), Verleg, M.N. (author), Vlieland, J. (author), de Haas, D.W. (author), Ocadiz flores, J.A. (author), Martin, Philippe (author), Rothe, Jörg (author), Capelli, E. (author), van Eijck, L. (author)
The development at the Delft University of Technology (TU Delft, The Netherlands) of an experimental set-up dedicated to high-temperature in situ EXAFS measurements of radioactive, air-sensitive and corrosive fluoride salts is reported. A detailed description of the sample containment cell, of the furnace design, and of the measurement...
journal article 2018
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Abrahami, S.T. (author), de Kok, J.M.M. (author), Gudla, V.C. (author), Marcoen, Kristof (author), Hauffman, T. (author), Ambat, R. (author), Mol, J.M.C. (author), Terryn, H.A. (author)
Nanoporous anodic aluminum oxides (AAOs) are used as templates in various technological applications, including load-bearing aircraft structures. But in spite of their popularity, the important aspects that control their (dis-)bonding to an organic coating are not fully understood. To study the mechanisms behind the negative effect of fluorides...
journal article 2018
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Schulze, Rita (author), Abbasalizadeh, A. (author), Bulach, Winfried (author), Schebek, Liselotte (author), Buchert, Matthias (author)
A new recycling process for the extraction of rare earths from neodymium–iron–boron (NdFeB) magnet scrap is being developed, based on the direct extraction of rare earths from end-of-life magnet material in a molten fluoride electrolysis bath. Rare earths are required in their metallic form for the production of new NdFeB magnets, and the...
journal article 2018
Searched for: subject%3A%22fluorides%22
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