Výsledky vyhledávání - "Fahim Karimi"

Akademický článek

Unravelling the local crystallographic structure of ferromagnetic $$\gamma '$$ γ ′ - $$\hbox {Ga}_y \hbox {Fe}_{4-y}$$ Ga y Fe 4 - y N nanocrystals embedded in GaN

Autor: Andrea Navarro-Quezada, Katarzyna Gas, Anna Spindlberger, Fahim Karimi, Maciej Sawicki, Gianluca Ciatto, Alberta Bonanni

Publikováno v: Scientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)

Abstract In the Fe-doped GaN phase-separated magnetic semiconductor Ga $$\delta $$ δ FeN, the presence of embedded $$\gamma '$$ γ ′ - $$\hbox {Ga}_y \hbox {Fe}_{4-y}$$ Ga y Fe 4 - y N nanocrystals determines the magnetic properties of the system.

Externí odkaz: https://doaj.org/article/9c3bdd97e2614d10a6452bfa8099a85d

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Effect of the particle size evolution on the hydrogen storage performance of KH doped Mg NH2 2 2LiH

Autor: Gökhan Gizer, Fahim Karimi, Claudio Pistidda, Hujun Cao, Julian A. Puszkiel, Yuanyuan Shang, Eike Gericke, Armin Hoell, P. Klaus Pranzas, Thomas Klassen, Martin Dornheim

Publikováno v: Gizer, G.; Karimi, F.; Pistidda, C.; Cao, H.; Puszkiel, J.; Shang, Y.; Gericke, E.; Hoell, A.; Pranzas, K.; Klassen, T.; Dornheim, M.: Effect of the particle size evolution on the hydrogen storage performance of KH doped Mg(NH2)2 + 2LiH. In: Journal of Materials Science. Vol. 57 (2022) 22, 10028-10038. (DOI: /10.1007/s10853-022-06985-4)

In recent years, many solid-state hydride-based materials have been considered as hydrogen storage systems for mobile and stationary applications. Due to a gravimetric hydrogen capacity of 5.6 wt% and a dehydrogenation enthalpy of 38.9 kJ/mol H2, Mg(

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a27133de2085052c5b8961dafc2dfac6
http://www.helmholtz-berlin.de/pubbin/oai_publication?VT=1&ID=109081

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A comprehensive study on lithium-based reactive hydride composite (Li-RHC) as a reversible solid-state hydrogen storage system toward potential mobile applications

Autor: Claudio Pistidda, P.K. Pranzas, Chiara Milanese, Martin Dornheim, Maria Victoria Castro Riglos, Thomas Klassen, Fahim Karimi, A. Schreyer, Ulla Vainio, Julián Atillio Puszkiel, Gökhan Gizer

Publikováno v: RSC Advances
Karimi, F.; Pranzas, K.; Puszkiel, J.; Castro Riglos, V.; Milanese, C.; Vainio, U.; Pistidda, C.; Gizer, G.; Klassen, T.; Schreyer, A.; Dornheim, M.: A comprehensive study on lithium-based reactive hydride composite (Li-RHC) as a reversible solid-state hydrogen storage system toward potential mobile applications. In: RSC Advances. Vol. 11 (2021) 37, 23122-23135. (DOI: /10.1039/D1RA03246A)

Reversible solid-state hydrogen storage is one of the key technologies toward pollutant-free and sustainable energy conversion. The composite system LiBH4-MgH2 can reversibly store hydrogen with a gravimetric capacity of 13 wt%. However, its dehydrog

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73e91f7606d92bca513fd6e54ae41607
https://zenodo.org/record/5056335

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Characterization of LiBH4–MgH2 Reactive Hydride Composite System with Scattering and Imaging Methods Using Neutron and Synchrotron Radiation

Autor: Oliver Metz, Armin Hoell, A. Schreyer, Julián Puszkiel, Thomas Klassen, Claudio Pistidda, Maria Victoria Castro Riglos, Gökhan Gizer, P. Klaus Pranzas, Martin Dornheim, Stefan Börries, Fahim Karimi

Publikováno v: Karimi, F.; Börris, S.; Pranzas, P.; Metz, O.; Hoell, A.; Gizer, G.; Puszkiel, J.; Riglos, M.; Pistidda, C.; Dornheim, M.; Klassen, T.; Schreyer, A.: Characterization of LiBH4–MgH2 Reactive Hydride Composite System with Scattering and Imaging Methods Using Neutron and Synchrotron Radiation. In: Advanced Engineering Materials. Vol. 23 (2021) 11, 2100294. (DOI: /10.1002/adem.202100294)

Reversible solid-state hydrogen storage in metal hydrides is a key technology for pollution-free energy conversion systems. Herein, the LiBH2–MgH2 composite system with and without ScCl3 additive is investigated using synchrotron- and neutron-radia

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ee21b8e7d5ce3386584c09ecafe5d93
https://publications.hzg.de/id/40256

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Hydrogenation Study of NaF/NaH/MgB2 Reactive Hydride Composites

Autor: Karina Suárez-Alcántara, Thomas Klassen, Claudio Pistidda, I. Saldan, Fahim Karimi, J. L. Carrillo-Bucio, M. Dornheim

Publikováno v: The Journal of Physical Chemistry C. 121:4093-4102

The hydrogenation of NaF/9NaH + 5MgB2 and NaF/2NaH + 1.5MgB2 reactive hydride composites (RHC) was studied by volumetric titration (kinetics and PCI curves), in situ synchrotron radiation powder X-ray diffraction (SR-PXD), high-pressure differential

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c73312a607d194397e84e2f0393c2a61
https://doi.org/10.1021/acs.jpcc.6b09776

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Kinetic alteration of the 6Mg(NH2)2–9LiH–LiBH4 system by co-adding YCl3 and Li3N

Autor: Julián Puszkiel, Martin Dornheim, Edmund Welter, Claudio Pistidda, Chiara Milanese, Weijin Zhang, Goekhan Gizer, Antonio Santoru, Thomas Klassen, Ping Chen, Martin Etter, Jozef Bednarcik, Maria Victoria Castro Riglos, Hujun Cao, Fahim Karimi

Publikováno v: Physical Chemistry Chemical Physics. 19:32105-32115

The 6Mg(NH2)2-9LiH-LiBH4 composite system has a maximum reversible hydrogen content of 4.2 wt% and a predicted dehydrogenation temperature of about 64 °C at 1 bar of H2. However, the existence of severe kinetic barriers precludes the occurrence of d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13d9696b38a27eb4ce297a9c6a01712b
https://doi.org/10.1039/c7cp06826c

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A novel catalytic route for hydrogenation–dehydrogenation of 2LiH + MgB2via in situ formed core–shell LixTiO2 nanoparticles

Autor: Armin Hoell, Thomas Klassen, Antonio Santoru, Julián Puszkiel, José M. Ramallo-López, Martín Mizrahi, J. M. Bellosta von Colbe, Fahim Karimi, M. Dornheim, Claudio Pistidda, P. Arneodo Larochette, M.V. Castro Riglos, Fabiana C. Gennari

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

Aiming to improve the hydrogen storage properties of 2LiH + MgB2 (Li-RHC), the effect of TiO2 addition to Li-RHC is investigated. The presence of TiO2 leads to the in situ formation of core-shell LixTiO2 nanoparticles during milling and upon heating.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f80d474e60da9c000b9e7b172c7fcfe
https://doi.org/10.1039/c7ta03117c

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Cyclic stability and structure of nanoconfined Ti-doped NaAlH 4

Autor: Uffe Filsø, Martin Dornheim, Thomas Klassen, Mark Paskevicius, Claudio Pistidda, Armin Hoell, Torben R. Jensen, Fahim Karimi, P.K. Pranzas, Andreas Schreyer, Julián Puszkiel, Edmund Welter

Publikováno v: Paskevicius, M, Filsø, U, Karimi, F, Puszkiel, J, Pranzas, P K, Pistidda, C, Hoell, A, Welter, E, Schreyer, A, Klassen, T, Dornheim, M & Jensen, T R 2016, ' Cyclic stability and structure of nanoconfined Ti-doped NaAlH 4 ', International Journal of Hydrogen Energy, vol. 41, no. 7, pp. 4159-4167 . https://doi.org/10.1016/j.ijhydene.2015.12.185

NaAlH 4 was melt infiltrated within a CO 2 activated carbon aerogel, which had been preloaded with TiCl 3 . Nanoconfinement was verified by Small Angle X-Ray Scattering (SAXS) and the nature of the Ti was investigated with Anomalous SAXS (ASAXS) and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7689bee135d8be53d345ef92f66896df
https://doi.org/10.1016/j.ijhydene.2015.12.185

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Design of a Nanometric AlTi Additive for MgB2-Based Reactive Hydride Composites with Superior Kinetic Properties

Autor: Michael Krumrey, Thomas Klassen, Thomas Emmler, SeyedHosein Payandeh GharibDoust, Armin Hoell, Maria Victoria Castro Riglos, Thi Thu Le, Eike Gericke, Martin Dornheim, Torben R. Jensen, Fahim Karimi, Jørgen Skibsted, Bo Richter, Claudio Pistidda, Etsuo Akiba, Chiara Milanese, Julián Puszkiel, Antonio Santoru

Publikováno v: Le, T T, Pistidda, C, Puszkiel, J, Castro Riglos, M V, Karimi, F, Skibsted, J, Gharibdoust, S P, Richter, B, Emmler, T, Milanese, C, Santoru, A, Hoell, A, Krumrey, M, Gericke, E, Akiba, E, Jensen, T R, Klassen, T & Dornheim, M 2018, ' Design of a Nanometric AlTi Additive for MgB 2-Based Reactive Hydride Composites with Superior Kinetic Properties ', Journal of Physical Chemistry C, vol. 122, no. 14, pp. 7642-7655 . https://doi.org/10.1021/acs.jpcc.8b01850
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Le, T.; Pistidda, C.; Puszkiel, J.; Castro Riglos, M.; Karimi, F.; Skibsted, J.; Payandeh GharibDoust, S.; Richter, B.; Emmler, T.; Milanese, C.; Santoru, A.; Hoell, A.; Krumrey, M.; Gericke, E.; Akiba, E.; Jensen, T.; Klassen, T.; Dornheim, M.: Design of a Nanometric AlTi Additive for MgB2-Based Reactive Hydride Composites with Superior Kinetic Properties. In: The Journal of Physical Chemistry C. Vol. 122 (2018) 14, 7642-7655. (DOI: /10.1021/acs.jpcc.8b01850)

Solid-state hydride compounds are a promising option for efficient and safe hydrogen-storage systems. Lithium reactive hydride composite system 2LiBH4 + MgH2/2LiH + MgB2 (Li-RHC) has been widely investigated owing to its high theoretical hydrogen-sto

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7cdb1c6b5cef625b5b39ce4073dfb165
http://pubs.acs.org/doi/10.1021/acs.jpcc.8b01850

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