Mg-based Nanocomposites for Hydrogen Storage Containing Ti-Cr-V Alloys as Additives

Detalhes bibliográficos
Autor(a) principal: Floriano,Ricardo
Data de Publicação: 2016
Outros Autores: Leiva,Daniel Rodrigo, Dessi,João Guilherme, Asselli,Alexandre Augusto Cesário, Jorge Junior,Alberto Moreira, Botta,Walter José
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392016000700080
Resumo: In this study, we have investigated the synthesis, microstructure and hydrogen storage properties of Mg-based nanocomposites containing different concentrations of TiCrV and TiCr1.2V0.8 alloys. The Mg-based nanocomposites of Mg containing Ti-Cr-V additives were prepared by reactive milling (RM) under hydrogen atmosphere. The structural characterization revealed the presence of the β-MgH2, γ-MgH2 and BCC phases in the powders samples after RM. In addition, a very refined and homogenous microstructure with average MgH2 crystallite size of around 10-12 nm was observed, including a nanometric dispersion of the additives in the magnesium hydride matrix. The doping with TiCrV and TiCr1,2V0,8 greatly improves the hydrogen desorption behavior of Mg in comparison with the sample without additive, resulting in the lowest onset temperature (240 ºC) for the sample containing 5%mol. of TiCrV. Very fast absorption and desorption kinetics at 275 ºC and 300 ºC (7 minutes and 5 minutes for full desorption and absorption, respectively) were observed in the samples containing TiCrV and TiCr1,2V0,8 without any notable difference between the type of additive used in comparison with the pure sample. However, a slight reduction in hydrogen capacity is observed in the mixtures than for the pure sample (6.7 wt.% against 7.3 wt.%).
id ABMABCABPOL-1_ca8b5885333ee0c4dc70490aa9bdd696
oai_identifier_str oai:scielo:S1516-14392016000700080
network_acronym_str ABMABCABPOL-1
network_name_str Materials research (São Carlos. Online)
repository_id_str
spelling Mg-based Nanocomposites for Hydrogen Storage Containing Ti-Cr-V Alloys as AdditivesHydrogen storageMagnesium hydrideReactive MillingBCC AlloysAdditivesIn this study, we have investigated the synthesis, microstructure and hydrogen storage properties of Mg-based nanocomposites containing different concentrations of TiCrV and TiCr1.2V0.8 alloys. The Mg-based nanocomposites of Mg containing Ti-Cr-V additives were prepared by reactive milling (RM) under hydrogen atmosphere. The structural characterization revealed the presence of the β-MgH2, γ-MgH2 and BCC phases in the powders samples after RM. In addition, a very refined and homogenous microstructure with average MgH2 crystallite size of around 10-12 nm was observed, including a nanometric dispersion of the additives in the magnesium hydride matrix. The doping with TiCrV and TiCr1,2V0,8 greatly improves the hydrogen desorption behavior of Mg in comparison with the sample without additive, resulting in the lowest onset temperature (240 ºC) for the sample containing 5%mol. of TiCrV. Very fast absorption and desorption kinetics at 275 ºC and 300 ºC (7 minutes and 5 minutes for full desorption and absorption, respectively) were observed in the samples containing TiCrV and TiCr1,2V0,8 without any notable difference between the type of additive used in comparison with the pure sample. However, a slight reduction in hydrogen capacity is observed in the mixtures than for the pure sample (6.7 wt.% against 7.3 wt.%).ABM, ABC, ABPol2016-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392016000700080Materials Research v.19 suppl.1 2016reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2016-0179info:eu-repo/semantics/openAccessFloriano,RicardoLeiva,Daniel RodrigoDessi,João GuilhermeAsselli,Alexandre Augusto CesárioJorge Junior,Alberto MoreiraBotta,Walter Joséeng2017-03-30T00:00:00Zoai:scielo:S1516-14392016000700080Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2017-03-30T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Mg-based Nanocomposites for Hydrogen Storage Containing Ti-Cr-V Alloys as Additives
title Mg-based Nanocomposites for Hydrogen Storage Containing Ti-Cr-V Alloys as Additives
spellingShingle Mg-based Nanocomposites for Hydrogen Storage Containing Ti-Cr-V Alloys as Additives
Floriano,Ricardo
Hydrogen storage
Magnesium hydride
Reactive Milling
BCC Alloys
Additives
title_short Mg-based Nanocomposites for Hydrogen Storage Containing Ti-Cr-V Alloys as Additives
title_full Mg-based Nanocomposites for Hydrogen Storage Containing Ti-Cr-V Alloys as Additives
title_fullStr Mg-based Nanocomposites for Hydrogen Storage Containing Ti-Cr-V Alloys as Additives
title_full_unstemmed Mg-based Nanocomposites for Hydrogen Storage Containing Ti-Cr-V Alloys as Additives
title_sort Mg-based Nanocomposites for Hydrogen Storage Containing Ti-Cr-V Alloys as Additives
author Floriano,Ricardo
author_facet Floriano,Ricardo
Leiva,Daniel Rodrigo
Dessi,João Guilherme
Asselli,Alexandre Augusto Cesário
Jorge Junior,Alberto Moreira
Botta,Walter José
author_role author
author2 Leiva,Daniel Rodrigo
Dessi,João Guilherme
Asselli,Alexandre Augusto Cesário
Jorge Junior,Alberto Moreira
Botta,Walter José
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Floriano,Ricardo
Leiva,Daniel Rodrigo
Dessi,João Guilherme
Asselli,Alexandre Augusto Cesário
Jorge Junior,Alberto Moreira
Botta,Walter José
dc.subject.por.fl_str_mv Hydrogen storage
Magnesium hydride
Reactive Milling
BCC Alloys
Additives
topic Hydrogen storage
Magnesium hydride
Reactive Milling
BCC Alloys
Additives
description In this study, we have investigated the synthesis, microstructure and hydrogen storage properties of Mg-based nanocomposites containing different concentrations of TiCrV and TiCr1.2V0.8 alloys. The Mg-based nanocomposites of Mg containing Ti-Cr-V additives were prepared by reactive milling (RM) under hydrogen atmosphere. The structural characterization revealed the presence of the β-MgH2, γ-MgH2 and BCC phases in the powders samples after RM. In addition, a very refined and homogenous microstructure with average MgH2 crystallite size of around 10-12 nm was observed, including a nanometric dispersion of the additives in the magnesium hydride matrix. The doping with TiCrV and TiCr1,2V0,8 greatly improves the hydrogen desorption behavior of Mg in comparison with the sample without additive, resulting in the lowest onset temperature (240 ºC) for the sample containing 5%mol. of TiCrV. Very fast absorption and desorption kinetics at 275 ºC and 300 ºC (7 minutes and 5 minutes for full desorption and absorption, respectively) were observed in the samples containing TiCrV and TiCr1,2V0,8 without any notable difference between the type of additive used in comparison with the pure sample. However, a slight reduction in hydrogen capacity is observed in the mixtures than for the pure sample (6.7 wt.% against 7.3 wt.%).
publishDate 2016
dc.date.none.fl_str_mv 2016-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392016000700080
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392016000700080
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1980-5373-mr-2016-0179
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.19 suppl.1 2016
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
_version_ 1754212668406759424