New Insight on the Hydrogen Absorption Evolution of the Mg–Fe–H System under Equilibrium Conditions

Autores
Puszkiel, Julián; Castro Riglos, M.; Ramallo López, José Martín; Mizrahi, Martín D.; Gemming, Thomas; Pistidda, Claudio; Arneodo Larochette, Pierre; Bellosta von Colbe, José; Klassen, Thomas; Dornheim, Martin; Gennari, Fabiana
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Mg₂FeH₆ is regarded as potential hydrogen and thermochemical storage medium due to its high volumetric hydrogen (150 kg/m³) and energy (0.49 kWh/L) densities. In this work, the mechanism of formation of Mg₂FeH₆ under equilibrium conditions is thoroughly investigated applying volumetric measurements, X-ray diffraction (XRD), X-ray absorption near edge structure (XANES), and the combination of scanning transmission electron microscopy (STEM) with energy-dispersive X-ray spectroscopy (EDS) and high-resolution transmission electron microscopy (HR-TEM). Starting from a 2Mg:Fe stoichiometric powder ratio, thorough characterizations of samples taken at different states upon hydrogenation under equilibrium conditions confirm that the formation mechanism of Mg₂FeH6 occurs from elemental Mg and Fe by columnar nucleation of the complex hydride at boundaries of the Fe seeds. The formation of MgH₂ is enhanced by the presence of Fe. However, MgH₂ does not take part as intermediate for the formation of Mg₂FeH₆ and acts as solid-solid diffusion barrier which hinders the complete formation of Mg₂FeH₆. This work provides novel insight about the formation mechanism of Mg₂FeH₆.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Química
Física
Magnesium-iron complex hydride
Equilibrium conditions
Transmission electron microscopy
X-ray spectroscopy
Hydrogen-energy storage
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/125382
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/125382
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network_name_str SEDICI (UNLP)
spelling New Insight on the Hydrogen Absorption Evolution of the Mg–Fe–H System under Equilibrium ConditionsPuszkiel, JuliánCastro Riglos, M.Ramallo López, José MartínMizrahi, Martín D.Gemming, ThomasPistidda, ClaudioArneodo Larochette, PierreBellosta von Colbe, JoséKlassen, ThomasDornheim, MartinGennari, FabianaQuímicaFísicaMagnesium-iron complex hydrideEquilibrium conditionsTransmission electron microscopyX-ray spectroscopyHydrogen-energy storageMg₂FeH₆ is regarded as potential hydrogen and thermochemical storage medium due to its high volumetric hydrogen (150 kg/m³) and energy (0.49 kWh/L) densities. In this work, the mechanism of formation of Mg₂FeH₆ under equilibrium conditions is thoroughly investigated applying volumetric measurements, X-ray diffraction (XRD), X-ray absorption near edge structure (XANES), and the combination of scanning transmission electron microscopy (STEM) with energy-dispersive X-ray spectroscopy (EDS) and high-resolution transmission electron microscopy (HR-TEM). Starting from a 2Mg:Fe stoichiometric powder ratio, thorough characterizations of samples taken at different states upon hydrogenation under equilibrium conditions confirm that the formation mechanism of Mg₂FeH6 occurs from elemental Mg and Fe by columnar nucleation of the complex hydride at boundaries of the Fe seeds. The formation of MgH₂ is enhanced by the presence of Fe. However, MgH₂ does not take part as intermediate for the formation of Mg₂FeH₆ and acts as solid-solid diffusion barrier which hinders the complete formation of Mg₂FeH₆. This work provides novel insight about the formation mechanism of Mg₂FeH₆.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/125382enginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2075-4701/8/11/967info:eu-repo/semantics/altIdentifier/issn/2075-4701info:eu-repo/semantics/altIdentifier/doi/10.3390/met8110967info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2026-05-06T12:38:15Zoai:sedici.unlp.edu.ar:10915/125382Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292026-05-06 12:38:16.186SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv New Insight on the Hydrogen Absorption Evolution of the Mg–Fe–H System under Equilibrium Conditions
title New Insight on the Hydrogen Absorption Evolution of the Mg–Fe–H System under Equilibrium Conditions
spellingShingle New Insight on the Hydrogen Absorption Evolution of the Mg–Fe–H System under Equilibrium Conditions
Puszkiel, Julián
Química
Física
Magnesium-iron complex hydride
Equilibrium conditions
Transmission electron microscopy
X-ray spectroscopy
Hydrogen-energy storage
title_short New Insight on the Hydrogen Absorption Evolution of the Mg–Fe–H System under Equilibrium Conditions
title_full New Insight on the Hydrogen Absorption Evolution of the Mg–Fe–H System under Equilibrium Conditions
title_fullStr New Insight on the Hydrogen Absorption Evolution of the Mg–Fe–H System under Equilibrium Conditions
title_full_unstemmed New Insight on the Hydrogen Absorption Evolution of the Mg–Fe–H System under Equilibrium Conditions
title_sort New Insight on the Hydrogen Absorption Evolution of the Mg–Fe–H System under Equilibrium Conditions
dc.creator.none.fl_str_mv Puszkiel, Julián
Castro Riglos, M.
Ramallo López, José Martín
Mizrahi, Martín D.
Gemming, Thomas
Pistidda, Claudio
Arneodo Larochette, Pierre
Bellosta von Colbe, José
Klassen, Thomas
Dornheim, Martin
Gennari, Fabiana
author Puszkiel, Julián
author_facet Puszkiel, Julián
Castro Riglos, M.
Ramallo López, José Martín
Mizrahi, Martín D.
Gemming, Thomas
Pistidda, Claudio
Arneodo Larochette, Pierre
Bellosta von Colbe, José
Klassen, Thomas
Dornheim, Martin
Gennari, Fabiana
author_role author
author2 Castro Riglos, M.
Ramallo López, José Martín
Mizrahi, Martín D.
Gemming, Thomas
Pistidda, Claudio
Arneodo Larochette, Pierre
Bellosta von Colbe, José
Klassen, Thomas
Dornheim, Martin
Gennari, Fabiana
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Química
Física
Magnesium-iron complex hydride
Equilibrium conditions
Transmission electron microscopy
X-ray spectroscopy
Hydrogen-energy storage
topic Química
Física
Magnesium-iron complex hydride
Equilibrium conditions
Transmission electron microscopy
X-ray spectroscopy
Hydrogen-energy storage
dc.description.none.fl_txt_mv Mg₂FeH₆ is regarded as potential hydrogen and thermochemical storage medium due to its high volumetric hydrogen (150 kg/m³) and energy (0.49 kWh/L) densities. In this work, the mechanism of formation of Mg₂FeH₆ under equilibrium conditions is thoroughly investigated applying volumetric measurements, X-ray diffraction (XRD), X-ray absorption near edge structure (XANES), and the combination of scanning transmission electron microscopy (STEM) with energy-dispersive X-ray spectroscopy (EDS) and high-resolution transmission electron microscopy (HR-TEM). Starting from a 2Mg:Fe stoichiometric powder ratio, thorough characterizations of samples taken at different states upon hydrogenation under equilibrium conditions confirm that the formation mechanism of Mg₂FeH6 occurs from elemental Mg and Fe by columnar nucleation of the complex hydride at boundaries of the Fe seeds. The formation of MgH₂ is enhanced by the presence of Fe. However, MgH₂ does not take part as intermediate for the formation of Mg₂FeH₆ and acts as solid-solid diffusion barrier which hinders the complete formation of Mg₂FeH₆. This work provides novel insight about the formation mechanism of Mg₂FeH₆.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description Mg₂FeH₆ is regarded as potential hydrogen and thermochemical storage medium due to its high volumetric hydrogen (150 kg/m³) and energy (0.49 kWh/L) densities. In this work, the mechanism of formation of Mg₂FeH₆ under equilibrium conditions is thoroughly investigated applying volumetric measurements, X-ray diffraction (XRD), X-ray absorption near edge structure (XANES), and the combination of scanning transmission electron microscopy (STEM) with energy-dispersive X-ray spectroscopy (EDS) and high-resolution transmission electron microscopy (HR-TEM). Starting from a 2Mg:Fe stoichiometric powder ratio, thorough characterizations of samples taken at different states upon hydrogenation under equilibrium conditions confirm that the formation mechanism of Mg₂FeH6 occurs from elemental Mg and Fe by columnar nucleation of the complex hydride at boundaries of the Fe seeds. The formation of MgH₂ is enhanced by the presence of Fe. However, MgH₂ does not take part as intermediate for the formation of Mg₂FeH₆ and acts as solid-solid diffusion barrier which hinders the complete formation of Mg₂FeH₆. This work provides novel insight about the formation mechanism of Mg₂FeH₆.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/125382
url http://sedici.unlp.edu.ar/handle/10915/125382
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2075-4701/8/11/967
info:eu-repo/semantics/altIdentifier/issn/2075-4701
info:eu-repo/semantics/altIdentifier/doi/10.3390/met8110967
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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