MgH2-TiFe composite for hydrogen storage

Página do item simplificado
dc.contributor.authorCOUTINHO, G.C.S.
dc.contributor.authorFALCAO, R.B.
dc.contributor.authorSILVA, R.A.
dc.contributor.authorROCHA, C.J.
dc.contributor.authorLEIVA, D.R.
dc.contributor.authorISHIKAWA, T.T.
dc.contributor.authorBOTTA, W.J.
dc.contributor.authorLEAL NETO, R.M.
dc.coverageInternacionalpt_BR
dc.creator.eventoLATIN AMERICAN CONFERENCE ON METASTABLE AND NANOSTRUCTURED MATERIALS, 7thpt_BR
dc.date.accessioned2018-03-07T11:45:31Z
dc.date.available2018-03-07T11:45:31Z
dc.date.eventoMarch 19-22, 2017pt_BR
dc.description.abstractMgH2 - 40wt.% TiFe composites were mechanical alloyed by high-energy ball milling, starting from both compounds, under high-purity argon atmosphere. In this case, the aim was to combine TiFe compound, which absorbs and desorbs hydrogen at or very near room temperature, with Mg, which has higher storage capacity. To avoid or reduce adherence on the vial and balls commercial MgH2 powder, instead of Mg, was used. TiFe was synthesized following a route described previously [1]. Three sets of experiments were done. In the first and second sets, MgH2 and TiFe powders were individually pre-milled in a shaker mill for 0.5 and 1 hour, respectively. Both milled powders were further mechanical alloyed in a planetary mill for 6 hours with ball-to-powder weight ratio (BPWR) of 40:1 (first set), or in a shaker mill for 2 hours, with BPWR of 30:1 (second set). In the third set, milling of both powders was conducted only in the shaker mill for 2 and 4 hours. Cyclohexane was used as process control agent in all experiments. DRX analysis showed no reaction between MgH2 and TiFe compound in all milled samples. Microstructural analysis by SEM revealed that TiFe particle size was 15% lower when pre-milling stage was performed (first and second sets of experiments). In the third set of experiments, TiFe particle size was reduced about 35% comparing milled samples for 2 and 4 hours (shaker mill). PCT and kinetics measurements were carried out in a Sieverts' type apparatus (under constant hydrogen flow) after heating the samples at 623K under vacuum for hydrogen desorption from MgH2. Results showed a increased hydrogen absorption capacity (about 4 wt % H2) for samples with lower TiFe particle size, which is accomplished after milling for 4 hours in the shaker mill.pt_BR
dc.event.siglaNANOMATpt_BR
dc.identifier.citationCOUTINHO, G.C.S.; FALCAO, R.B.; SILVA, R.A.; ROCHA, C.J.; LEIVA, D.R.; ISHIKAWA, T.T.; BOTTA, W.J.; LEAL NETO, R.M. MgH2-TiFe composite for hydrogen storage: synthesis and characterization. In: LATIN AMERICAN CONFERENCE ON METASTABLE AND NANOSTRUCTURED MATERIALS, 7th, March 19-22, 2017, Brotas, SP. <b>Abstract...</b> Disponível em: http://repositorio.ipen.br/handle/123456789/28671.
dc.identifier.orcidhttps://orcid.org/0000-0001-5104-7392
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/28671
dc.local.eventoBrotas, SPpt_BR
dc.rightsopenAccesspt_BR
dc.titleMgH2-TiFe composite for hydrogen storagept_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorRAILSON BOLSONI FALCÃO
ipen.autorRICARDO MENDES LEAL NETO
ipen.autorCLAUDIO JOSE DA ROCHA
ipen.autorGRAZIELE CRISTIANE SECO COUTINHO
ipen.codigoautor5980
ipen.codigoautor520
ipen.codigoautor764
ipen.codigoautor11712
ipen.contributor.ipenauthorRAILSON BOLSONI FALCÃO
ipen.contributor.ipenauthorRICARDO MENDES LEAL NETO
ipen.contributor.ipenauthorCLAUDIO JOSE DA ROCHA
ipen.contributor.ipenauthorGRAZIELE CRISTIANE SECO COUTINHO
ipen.date.recebimento18-03pt_BR
ipen.event.datapadronizada2017pt_BR
ipen.identifier.ipendoc24485pt_BR
ipen.notas.internasAbstractpt_BR
ipen.subtitulosynthesis and characterizationpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublicatione9bb2aa8-1c3e-4659-911b-f73fd95a5e2d
relation.isAuthorOfPublicationb5e83d03-1f9c-4e57-8e02-628a903c95f8
relation.isAuthorOfPublication89854a08-c999-4073-aa92-96f7a0ddbc01
relation.isAuthorOfPublication668c4283-36ca-4224-8a8b-74b4dd9eef94
relation.isAuthorOfPublication.latestForDiscovery668c4283-36ca-4224-8a8b-74b4dd9eef94
sigepi.autor.atividadeCOUTINHO, G.C.S.:11712:730:Spt_BR
sigepi.autor.atividadeFALCAO, R.B.:5980:730:Npt_BR
sigepi.autor.atividadeROCHA, C.J.:764:730:Npt_BR
sigepi.autor.atividadeLEAL NETO, R.M.:520:730:Npt_BR
Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
24485.pdf
Tamanho:
14.21 KB
Formato:
Adobe Portable Document Format
Descrição:
Baixar
Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Baixar
Coleções
Eventos - Resumos