Influences of heat treatment on the structure and electrochemical properties of Mg0.9Ti0.1Ni hydrogen storage alloys

Detalhes bibliográficos
Autor(a) principal: Huang,HongXia
Data de Publicação: 2009
Outros Autores: Huang,KeLong, Liu,SuQin, Chen,DongYang, Zhuang,ShuXin
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532009000900010
Resumo: In the present study, the effects of heat treatment on the structures and electrochemical properties of Mg0.9Ti0.1Ni hydrogen storage alloys have been investigated in detail. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses showed that the samples exhibited a predominantly amorphous structure. Electrochemical investigations revealed that heat treatment can improve the maximum discharge capacity and cyclic stability of the alloy electrodes. For Mg0.9Ti0.1Ni alloy prepare by ball milling, the value of Cmax was only 229.9 mAh g-1, however, the value reached 331.9 mAh g-1 after heat treatment at 873K for 8 h and then milling. The cycle voltammetry, electrochemical impedance spectroscopy and potentiodynamic polarization indicated that heat treatment not only increased the discharge capacity but also improved the charge/discharge kinetics of Mg0.9Ti0.1Ni alloy.
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spelling Influences of heat treatment on the structure and electrochemical properties of Mg0.9Ti0.1Ni hydrogen storage alloyshydrogen absorbing materialsamorphous materialsheat treatmentelectrochemical propertiesIn the present study, the effects of heat treatment on the structures and electrochemical properties of Mg0.9Ti0.1Ni hydrogen storage alloys have been investigated in detail. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses showed that the samples exhibited a predominantly amorphous structure. Electrochemical investigations revealed that heat treatment can improve the maximum discharge capacity and cyclic stability of the alloy electrodes. For Mg0.9Ti0.1Ni alloy prepare by ball milling, the value of Cmax was only 229.9 mAh g-1, however, the value reached 331.9 mAh g-1 after heat treatment at 873K for 8 h and then milling. The cycle voltammetry, electrochemical impedance spectroscopy and potentiodynamic polarization indicated that heat treatment not only increased the discharge capacity but also improved the charge/discharge kinetics of Mg0.9Ti0.1Ni alloy.Sociedade Brasileira de Química2009-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532009000900010Journal of the Brazilian Chemical Society v.20 n.9 2009reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532009000900010info:eu-repo/semantics/openAccessHuang,HongXiaHuang,KeLongLiu,SuQinChen,DongYangZhuang,ShuXineng2011-10-14T00:00:00Zoai:scielo:S0103-50532009000900010Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2011-10-14T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Influences of heat treatment on the structure and electrochemical properties of Mg0.9Ti0.1Ni hydrogen storage alloys
title Influences of heat treatment on the structure and electrochemical properties of Mg0.9Ti0.1Ni hydrogen storage alloys
spellingShingle Influences of heat treatment on the structure and electrochemical properties of Mg0.9Ti0.1Ni hydrogen storage alloys
Huang,HongXia
hydrogen absorbing materials
amorphous materials
heat treatment
electrochemical properties
title_short Influences of heat treatment on the structure and electrochemical properties of Mg0.9Ti0.1Ni hydrogen storage alloys
title_full Influences of heat treatment on the structure and electrochemical properties of Mg0.9Ti0.1Ni hydrogen storage alloys
title_fullStr Influences of heat treatment on the structure and electrochemical properties of Mg0.9Ti0.1Ni hydrogen storage alloys
title_full_unstemmed Influences of heat treatment on the structure and electrochemical properties of Mg0.9Ti0.1Ni hydrogen storage alloys
title_sort Influences of heat treatment on the structure and electrochemical properties of Mg0.9Ti0.1Ni hydrogen storage alloys
author Huang,HongXia
author_facet Huang,HongXia
Huang,KeLong
Liu,SuQin
Chen,DongYang
Zhuang,ShuXin
author_role author
author2 Huang,KeLong
Liu,SuQin
Chen,DongYang
Zhuang,ShuXin
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Huang,HongXia
Huang,KeLong
Liu,SuQin
Chen,DongYang
Zhuang,ShuXin
dc.subject.por.fl_str_mv hydrogen absorbing materials
amorphous materials
heat treatment
electrochemical properties
topic hydrogen absorbing materials
amorphous materials
heat treatment
electrochemical properties
description In the present study, the effects of heat treatment on the structures and electrochemical properties of Mg0.9Ti0.1Ni hydrogen storage alloys have been investigated in detail. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses showed that the samples exhibited a predominantly amorphous structure. Electrochemical investigations revealed that heat treatment can improve the maximum discharge capacity and cyclic stability of the alloy electrodes. For Mg0.9Ti0.1Ni alloy prepare by ball milling, the value of Cmax was only 229.9 mAh g-1, however, the value reached 331.9 mAh g-1 after heat treatment at 873K for 8 h and then milling. The cycle voltammetry, electrochemical impedance spectroscopy and potentiodynamic polarization indicated that heat treatment not only increased the discharge capacity but also improved the charge/discharge kinetics of Mg0.9Ti0.1Ni alloy.
publishDate 2009
dc.date.none.fl_str_mv 2009-01-01
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=S0103-50532009000900010
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532009000900010
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532009000900010
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 Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.20 n.9 2009
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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