Reversible hydrogen storage in Mg(HxF1−x)2 solid solutions

Autores
Pighin, Santiago Alberto; Urretavizcaya, Guillermina; Castro, Facundo
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Mg(HxF1−x)2 solid solutions have been synthesized by mechanical milling MgF2 and MgH2 under H2 atmosphere. Complete solubility has been observed at 475 °C. The solid solution presents a rutile-type structure with the anion site randomly occupied by H− or F− and with lattice parameters showing positive deviations from Vegard's law. The solution can be decomposed and re-formed reversibly by changing H2 pressure. For example, Mg(H0.9F0.1)2 reversibly stores 5.5 wt. % H2 in less than 3 min at 440 °C. During decomposition H2 is released, and Mg and a solution rich in F appear as products. This process takes place in two clearly marked stages controlled by F− concentration in the material. The decomposition enthalpy of the first one is close to that of MgH2 for Mg(H0.9F0.1)2, and decreases with the H content in the solution.
Fil: Pighin, Santiago Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Universidad Nacional del Comahue; Argentina
Fil: Urretavizcaya, Guillermina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Universidad Nacional de Cuyo; Argentina
Fil: Castro, Facundo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Universidad Nacional de Cuyo; Argentina
Materia
Hydrogen Storage
Mechanical Milling
Solid Solutions
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/57873
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/57873
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Reversible hydrogen storage in Mg(HxF1−x)2 solid solutionsPighin, Santiago AlbertoUrretavizcaya, GuillerminaCastro, FacundoHydrogen StorageMechanical MillingSolid Solutionshttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2Mg(HxF1−x)2 solid solutions have been synthesized by mechanical milling MgF2 and MgH2 under H2 atmosphere. Complete solubility has been observed at 475 °C. The solid solution presents a rutile-type structure with the anion site randomly occupied by H− or F− and with lattice parameters showing positive deviations from Vegard's law. The solution can be decomposed and re-formed reversibly by changing H2 pressure. For example, Mg(H0.9F0.1)2 reversibly stores 5.5 wt. % H2 in less than 3 min at 440 °C. During decomposition H2 is released, and Mg and a solution rich in F appear as products. This process takes place in two clearly marked stages controlled by F− concentration in the material. The decomposition enthalpy of the first one is close to that of MgH2 for Mg(H0.9F0.1)2, and decreases with the H content in the solution.Fil: Pighin, Santiago Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Universidad Nacional del Comahue; ArgentinaFil: Urretavizcaya, Guillermina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Universidad Nacional de Cuyo; ArgentinaFil: Castro, Facundo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Universidad Nacional de Cuyo; ArgentinaElsevier Science Sa2017-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/57873Pighin, Santiago Alberto; Urretavizcaya, Guillermina; Castro, Facundo; Reversible hydrogen storage in Mg(HxF1−x)2 solid solutions; Elsevier Science Sa; Journal of Alloys and Compounds; 708; 6-2017; 108-1140925-8388CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jallcom.2017.02.297info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0925838817307454info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-05T09:42:02Zoai:ri.conicet.gov.ar:11336/57873instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-11-05 09:42:02.926CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Reversible hydrogen storage in Mg(HxF1−x)2 solid solutions
title Reversible hydrogen storage in Mg(HxF1−x)2 solid solutions
spellingShingle Reversible hydrogen storage in Mg(HxF1−x)2 solid solutions
Pighin, Santiago Alberto
Hydrogen Storage
Mechanical Milling
Solid Solutions
title_short Reversible hydrogen storage in Mg(HxF1−x)2 solid solutions
title_full Reversible hydrogen storage in Mg(HxF1−x)2 solid solutions
title_fullStr Reversible hydrogen storage in Mg(HxF1−x)2 solid solutions
title_full_unstemmed Reversible hydrogen storage in Mg(HxF1−x)2 solid solutions
title_sort Reversible hydrogen storage in Mg(HxF1−x)2 solid solutions
dc.creator.none.fl_str_mv Pighin, Santiago Alberto
Urretavizcaya, Guillermina
Castro, Facundo
author Pighin, Santiago Alberto
author_facet Pighin, Santiago Alberto
Urretavizcaya, Guillermina
Castro, Facundo
author_role author
author2 Urretavizcaya, Guillermina
Castro, Facundo
author2_role author
author
dc.subject.none.fl_str_mv Hydrogen Storage
Mechanical Milling
Solid Solutions
topic Hydrogen Storage
Mechanical Milling
Solid Solutions
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Mg(HxF1−x)2 solid solutions have been synthesized by mechanical milling MgF2 and MgH2 under H2 atmosphere. Complete solubility has been observed at 475 °C. The solid solution presents a rutile-type structure with the anion site randomly occupied by H− or F− and with lattice parameters showing positive deviations from Vegard's law. The solution can be decomposed and re-formed reversibly by changing H2 pressure. For example, Mg(H0.9F0.1)2 reversibly stores 5.5 wt. % H2 in less than 3 min at 440 °C. During decomposition H2 is released, and Mg and a solution rich in F appear as products. This process takes place in two clearly marked stages controlled by F− concentration in the material. The decomposition enthalpy of the first one is close to that of MgH2 for Mg(H0.9F0.1)2, and decreases with the H content in the solution.
Fil: Pighin, Santiago Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Universidad Nacional del Comahue; Argentina
Fil: Urretavizcaya, Guillermina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Universidad Nacional de Cuyo; Argentina
Fil: Castro, Facundo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Universidad Nacional de Cuyo; Argentina
description Mg(HxF1−x)2 solid solutions have been synthesized by mechanical milling MgF2 and MgH2 under H2 atmosphere. Complete solubility has been observed at 475 °C. The solid solution presents a rutile-type structure with the anion site randomly occupied by H− or F− and with lattice parameters showing positive deviations from Vegard's law. The solution can be decomposed and re-formed reversibly by changing H2 pressure. For example, Mg(H0.9F0.1)2 reversibly stores 5.5 wt. % H2 in less than 3 min at 440 °C. During decomposition H2 is released, and Mg and a solution rich in F appear as products. This process takes place in two clearly marked stages controlled by F− concentration in the material. The decomposition enthalpy of the first one is close to that of MgH2 for Mg(H0.9F0.1)2, and decreases with the H content in the solution.
publishDate 2017
dc.date.none.fl_str_mv 2017-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/57873
Pighin, Santiago Alberto; Urretavizcaya, Guillermina; Castro, Facundo; Reversible hydrogen storage in Mg(HxF1−x)2 solid solutions; Elsevier Science Sa; Journal of Alloys and Compounds; 708; 6-2017; 108-114
0925-8388
CONICET Digital
CONICET
url http://hdl.handle.net/11336/57873
identifier_str_mv Pighin, Santiago Alberto; Urretavizcaya, Guillermina; Castro, Facundo; Reversible hydrogen storage in Mg(HxF1−x)2 solid solutions; Elsevier Science Sa; Journal of Alloys and Compounds; 708; 6-2017; 108-114
0925-8388
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jallcom.2017.02.297
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0925838817307454
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1847976983982505984
score 13.084122

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