A5070193228- Hydrogen Storage and Materials
- Ammonia Synthesis and Nitrogen Reduction
- Superconductivity in MgB2 and Alloys
- Metallic Glasses and Amorphous Alloys
- Magnetic Properties of Alloys
- Nuclear Materials and Properties
- Hybrid Renewable Energy Systems
- Spacecraft and Cryogenic Technologies
- Material Properties and Applications
- X-ray Diffraction in Crystallography
- Adsorption and Cooling Systems
- Magnesium Alloys: Properties and Applications
- Boron and Carbon Nanomaterials Research
- Glass properties and applications
- Phase Change Materials Research
- Phase-change materials and chalcogenides
- Crystallization and Solubility Studies
- Advanced Materials Characterization Techniques
- Quantum, superfluid, helium dynamics
- Aluminum Alloys Composites Properties
- Catalysis and Hydrodesulfurization Studies
- Inorganic Chemistry and Materials
- Nuclear Physics and Applications
- Magnetic Properties and Synthesis of Ferrites
- Rare-earth and actinide compounds
Institute for Energy Technology
2016-2025
Norsk Hydro (Norway)
2021-2025
Institut Français de l'Éducation
2022
Kjeller Innovasjon (Norway)
2015
Science et Ingénierie des Matériaux et Procédés
2005-2008
Tokyo Institute of Technology
2008
Leibniz Institute for Solid State and Materials Research
2000-2006
Institut polytechnique de Grenoble
2005-2006
Centre National de la Recherche Scientifique
2005-2006
Leibniz Association
2003
Abstract Crystal structure determination is essential for characterizing materials and their properties can be facilitated by various tools indicators. For instance, the Goldschmidt tolerance factor ( T ) perovskite compounds acknowledged evaluating crystal structures in terms of ionic packing. However, its applicability limited to compounds. Here, we report on extending with arbitrary arrangements compositions. By focussing occupancy constituent spherical ions structure, define filling...
Magnesium borohydride (Mg(BH4)2) shows interesting properties both from fundamental and applicative points of view. Mg(BH4)2 has the most complex crystal structures largest number phase polymorphs among other borohydrides. Some these possess a significant porosity, on hand ultra-density with second highest volumetric hydrogen content all known hydrides. Additionally, demonstrates lowest theoretical stability, temperature release, mildest conditions for partial rehydrogenation alkali...
Abstract Intense literature and research efforts have focussed on the exploration of complex hydrides for energy storage applications over past decades. A focus was dedicated to determination their thermodynamic hydrogen properties, due high gravimetric volumetric capacities, but application has been limited because harsh working conditions reversible release uptake. The present review aims at appraising recent advances different hydride systems, coming from proficient collaborative...
The aim of this work is to evaluate if metal hydride hydrogen storage tanks are a competitive alternative for onboard in the maritime sector, when compared compressed gas and liquid storage. This done by modelling different supply scenarios evaluating their levelized cost variables. each case calculated considering main components that required refueling infrastructure adding up costs production, compression, transport, onshore storage, dispensing, known. results show simpler needs...
Moving from basic research to the implementation of hydrogen storage system based on metal hydride, industrial production active material is fundamental. The alloy TiFe0.85Mn0.05 was selected as H2-carrier for a plant about 50 kg H2. In this work, batch 5 synthesized at level and characterized determine structure phase abundance. H2 sorption properties were investigated, performing studies long-term cycling study resistance poisoning. absorbs desorbs between 25 bar 1 55 °C, storing 1.0H2...
Hydrogen desorption and absorption properties of magnesium borohydride (Mg(BH<sub>4</sub>)<sub>2</sub>) were studied for three cycles. Effect cobalt additives their local structure upon cycling investigated in detail.
The decomposition and rehydrogenation of γ-Mg(BH4)2 ball milled together with 2 mol % Ni-based additives, Ninano, NiCl2, NiF2, Ni3B, has been investigated during one hydrogen desorption–absorption cycle. Under the applied ball-milling conditions, no mechanochemical reactions between Niadd were observed. Hydrogen desorption carried out at temperatures 220–264 °C resulted for all samples in partial Mg(BH4)2 formation amorphous phases, as seen by powder X-ray diffraction (PXD). PXD analysis...
Among the thermodynamic properties of novel materials for solid-state hydrogen storage, heat formation/decomposition hydrides is most important parameter to evaluate stability compound and its temperature pressure operation. In this work, desorption absorption behaviors three different classes are investigated under pressures using high-pressure differential scanning calorimetry (HP-DSC). The HP-DSC technique used estimate equilibrium as a function temperature, from which formation derived....
We report on a comparative study of high performance isotropic cobalt ferrite (CoFe2O4) powder processed by dry and surfactant assisted (wet) ball milling. Milling times as short 1.5 min (dry) 6 have resulted in 4-fold increase coercivity, with maximum achieved value above 318 kA/m (4 kOe). The use is shown to be advantageous the formation more homogeneous structure constituted non-agglomerated strained nanoparticles. A record (BH) max 18.6 kJ m −3 (2.34 MGOe) has been obtained for after...
Mg2(Fe0.5Co0.5) elemental powder mixtures were processed by reactive ball milling in a H2 (or D2) atmosphere at about 50 bar. The changes of pressure monitored during and hydrogen absorption was detected within the first 10 h milling. X-ray neutron diffraction analysis, followed Rietveld refinement, suggests an almost complete conversion starting metals into quaternary hydride Mg2(FeH6)0.5(CoH5)0.5. latter has cubic K2PtCl6-type structure (space group Fm3m) with cell parameter a≈6.42 Å. Fe...
Magnesium borohydride (Mg(BH4)2) is one of the most promising hydrogen storage materials. Its kinetics desorption, reversibility, and complex reaction pathways during decomposition rehydrogenation, however, present a challenge, which has been often addressed by using transition metal compounds as additives. In this work Mg(BH4)2 ball-milled with CoCl2 CoF2 additives, was studied means combination several in-situ techniques. Synchrotron X-ray diffraction Raman spectroscopy were used to follow...
The low cost, rare earth free τ-phase of MnAl has high potential to partially replace bonded Nd2Fe14B permanent magnets. However, the is metastable and it experimentally difficult obtain powders suitable for magnet alignment process, which requires fine have an appropriate microstructure purity. In this work, a new method make purity presented. A Mn0.55Al0.45C0.02 alloy was synthesized by drop synthesis method. material subjected cryo milling followed flash heating process. crystal structure...
The topic of data storage, traceability, and use reuse in the years following experiments is becoming an important Europe across world. Many scientific communities are striving to create open by FAIR principles. This a requirement from European Commission for EU-funded projects at research infrastructures (RIs) many national funding agencies. challenging users large-scale RIs such as neutron, photon, synchrotron free-electron laser facilities. Users photon neutron (PaN) employ wide range...
Neutrons, owing to their unique properties, serve as indispensable probes for investigating the structure and dynamics of materials across various length scales. The scientific community utilizing neutron research infrastructures encompasses a diverse range disciplines, making it challenging quantify its societal impact. To address this challenge, we apply Natural Language Processing (NLP) machine learning techniques analyze output European science community. Leveraging open-source software...