Structural and hydrogen storage characterization of nanocrystalline magnesium synthesized by ECAP and catalyzed by different nanotube additives

Ball-milled nanocrystalline Mg powders catalyzed by TiO2 powder, titanate nanotubes and carbon nanotubes were subjected to intense plastic deformation by equal-channel angular pressing. Microstructural characteristics of these nanocomposites have been investigated by X-ray diffraction. Microstructur...

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Autores principales:	Révész Ádám, Fodor Dániel G., Krállics György, Spassov Tony, Gajdics Marcell
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	hydrogen storage mg-based microstructure severe plastic deformation equal-channel angular pressing Technology T Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/9faea858b07c43e9a67220599c4e19e5
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spelling	oai:doaj.org-article:9faea858b07c43e9a67220599c4e19e52021-12-05T14:11:03ZStructural and hydrogen storage characterization of nanocrystalline magnesium synthesized by ECAP and catalyzed by different nanotube additives1605-812710.1515/rams-2021-0056https://doaj.org/article/9faea858b07c43e9a67220599c4e19e52021-11-01T00:00:00Zhttps://doi.org/10.1515/rams-2021-0056https://doaj.org/toc/1605-8127Ball-milled nanocrystalline Mg powders catalyzed by TiO2 powder, titanate nanotubes and carbon nanotubes were subjected to intense plastic deformation by equal-channel angular pressing. Microstructural characteristics of these nanocomposites have been investigated by X-ray diffraction. Microstructural parameters, such as the average crystallite size, the average dislocation density and the average dislocation distance have been determined by the modified Williamson–Hall analysis. Complementary hydrogen desorption and absorption experiments were carried out in a Sieverts’ type apparatus. It was found that the Mg-based composite catalyzed by titanate nanotubes exhibits the best overall H-storage performance, reaching 7.1 wt% capacity. The hydrogenation kinetic curves can be fitted by the contracting volume function for all the investigated materials. From the fitted parameters, it is confirmed that the titanate nanotube additive results in far the best kinetic behavior, including the highest hydride front velocity.Révész ÁdámFodor Dániel G.Krállics GyörgySpassov TonyGajdics MarcellDe Gruyterarticlehydrogen storagemg-based microstructuresevere plastic deformationequal-channel angular pressingTechnologyTChemical technologyTP1-1185ENReviews on Advanced Materials Science, Vol 60, Iss 1, Pp 884-893 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hydrogen storage mg-based microstructure severe plastic deformation equal-channel angular pressing Technology T Chemical technology TP1-1185
spellingShingle	hydrogen storage mg-based microstructure severe plastic deformation equal-channel angular pressing Technology T Chemical technology TP1-1185 Révész Ádám Fodor Dániel G. Krállics György Spassov Tony Gajdics Marcell Structural and hydrogen storage characterization of nanocrystalline magnesium synthesized by ECAP and catalyzed by different nanotube additives
description	Ball-milled nanocrystalline Mg powders catalyzed by TiO2 powder, titanate nanotubes and carbon nanotubes were subjected to intense plastic deformation by equal-channel angular pressing. Microstructural characteristics of these nanocomposites have been investigated by X-ray diffraction. Microstructural parameters, such as the average crystallite size, the average dislocation density and the average dislocation distance have been determined by the modified Williamson–Hall analysis. Complementary hydrogen desorption and absorption experiments were carried out in a Sieverts’ type apparatus. It was found that the Mg-based composite catalyzed by titanate nanotubes exhibits the best overall H-storage performance, reaching 7.1 wt% capacity. The hydrogenation kinetic curves can be fitted by the contracting volume function for all the investigated materials. From the fitted parameters, it is confirmed that the titanate nanotube additive results in far the best kinetic behavior, including the highest hydride front velocity.
format	article
author	Révész Ádám Fodor Dániel G. Krállics György Spassov Tony Gajdics Marcell
author_facet	Révész Ádám Fodor Dániel G. Krállics György Spassov Tony Gajdics Marcell
author_sort	Révész Ádám
title	Structural and hydrogen storage characterization of nanocrystalline magnesium synthesized by ECAP and catalyzed by different nanotube additives
title_short	Structural and hydrogen storage characterization of nanocrystalline magnesium synthesized by ECAP and catalyzed by different nanotube additives
title_full	Structural and hydrogen storage characterization of nanocrystalline magnesium synthesized by ECAP and catalyzed by different nanotube additives
title_fullStr	Structural and hydrogen storage characterization of nanocrystalline magnesium synthesized by ECAP and catalyzed by different nanotube additives
title_full_unstemmed	Structural and hydrogen storage characterization of nanocrystalline magnesium synthesized by ECAP and catalyzed by different nanotube additives
title_sort	structural and hydrogen storage characterization of nanocrystalline magnesium synthesized by ecap and catalyzed by different nanotube additives
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/9faea858b07c43e9a67220599c4e19e5
work_keys_str_mv	AT reveszadam structuralandhydrogenstoragecharacterizationofnanocrystallinemagnesiumsynthesizedbyecapandcatalyzedbydifferentnanotubeadditives AT fodordanielg structuralandhydrogenstoragecharacterizationofnanocrystallinemagnesiumsynthesizedbyecapandcatalyzedbydifferentnanotubeadditives AT krallicsgyorgy structuralandhydrogenstoragecharacterizationofnanocrystallinemagnesiumsynthesizedbyecapandcatalyzedbydifferentnanotubeadditives AT spassovtony structuralandhydrogenstoragecharacterizationofnanocrystallinemagnesiumsynthesizedbyecapandcatalyzedbydifferentnanotubeadditives AT gajdicsmarcell structuralandhydrogenstoragecharacterizationofnanocrystallinemagnesiumsynthesizedbyecapandcatalyzedbydifferentnanotubeadditives
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Structural and hydrogen storage characterization of nanocrystalline magnesium synthesized by ECAP and catalyzed by different nanotube additives

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