Mg-based Nanocomposites for Hydrogen Storage Containing Ti-Cr-V Alloys as Additives
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
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.%). |
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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 |