Effect of fiber alignment in gelled electrospun membranes based on poly(vinylidene fluoride) for battery applications

Detalhes bibliográficos
Autor(a) principal: Costa, Carlos M.
Data de Publicação: 2013
Outros Autores: Nunes-Pereira, João, Sencadas, Vitor, Silva, M. Manuela, Lanceros-Mendez, Senentxu
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/11110/380
Resumo: Battery separators based on electrospun membranes of poly(vinylidene fluoride) (PVDF) have been prepared in order to study the effect of fiber alignment on the performance and characteristics of the membrane. The prepared membranes show an average fiber diameter of 272 nm and a degree of porosity of 87 %. The gel polymer electrolytes are prepared by soaking the membranes in the electrolyte solution. The alignment of the fibers improves the mechanical properties for the electrospun membranes. Further, the microstructure of the membrane also plays an important role in the ionic conductivity, being higher for the random electrospun membrane due to the lower tortuosity value. Independently of the microstructure, both membranes show good electrochemical stability up to 5.0 V versus Li/Li+. These results show that electrospun membranes based on PVDF are appropriate for battery separators in lithium-ion battery applications, the random membranes showing a better overall performance.
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spelling Effect of fiber alignment in gelled electrospun membranes based on poly(vinylidene fluoride) for battery applicationsBatteriespolymer electrolytemembrane separatorselectrospinningpiezoelectricionic conductivityBattery separators based on electrospun membranes of poly(vinylidene fluoride) (PVDF) have been prepared in order to study the effect of fiber alignment on the performance and characteristics of the membrane. The prepared membranes show an average fiber diameter of 272 nm and a degree of porosity of 87 %. The gel polymer electrolytes are prepared by soaking the membranes in the electrolyte solution. The alignment of the fibers improves the mechanical properties for the electrospun membranes. Further, the microstructure of the membrane also plays an important role in the ionic conductivity, being higher for the random electrospun membrane due to the lower tortuosity value. Independently of the microstructure, both membranes show good electrochemical stability up to 5.0 V versus Li/Li+. These results show that electrospun membranes based on PVDF are appropriate for battery separators in lithium-ion battery applications, the random membranes showing a better overall performance.This studywas funded by FEDER funds through the ‘ProgramaOperacional Factores de Competitividade –COMPETE’ and by national funds by FCT—Fundação para a Ciência e a Tecnologia, project references Project PTDC/CTM/69316/2006, NANO/NMed-SD/0156/2007 and Pest-C/QUI/UIO686/2011 and Grant SFRH/BD/68499/2010 (C.M.C) and SFRH/BD/66930/2009 (J.N.P.) SFRH/BPD/63148/2009 (V.S). The authors also thank Celgard, LLC for kindly supplying their high quality membranes.2013-12-09T19:46:46Z2013-12-09T19:46:46Z2013-12-09T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/11110/380oai:ciencipca.ipca.pt:11110/380eng0022-24611573-4803http://hdl.handle.net/11110/380Costa, Carlos M.Nunes-Pereira, JoãoSencadas, VitorSilva, M. ManuelaLanceros-Mendez, Senentxuinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-09-05T12:51:58ZPortal AgregadorONG
dc.title.none.fl_str_mv Effect of fiber alignment in gelled electrospun membranes based on poly(vinylidene fluoride) for battery applications
title Effect of fiber alignment in gelled electrospun membranes based on poly(vinylidene fluoride) for battery applications
spellingShingle Effect of fiber alignment in gelled electrospun membranes based on poly(vinylidene fluoride) for battery applications
Costa, Carlos M.
Batteries
polymer electrolyte
membrane separators
electrospinning
piezoelectric
ionic conductivity
title_short Effect of fiber alignment in gelled electrospun membranes based on poly(vinylidene fluoride) for battery applications
title_full Effect of fiber alignment in gelled electrospun membranes based on poly(vinylidene fluoride) for battery applications
title_fullStr Effect of fiber alignment in gelled electrospun membranes based on poly(vinylidene fluoride) for battery applications
title_full_unstemmed Effect of fiber alignment in gelled electrospun membranes based on poly(vinylidene fluoride) for battery applications
title_sort Effect of fiber alignment in gelled electrospun membranes based on poly(vinylidene fluoride) for battery applications
author Costa, Carlos M.
author_facet Costa, Carlos M.
Nunes-Pereira, João
Sencadas, Vitor
Silva, M. Manuela
Lanceros-Mendez, Senentxu
author_role author
author2 Nunes-Pereira, João
Sencadas, Vitor
Silva, M. Manuela
Lanceros-Mendez, Senentxu
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Costa, Carlos M.
Nunes-Pereira, João
Sencadas, Vitor
Silva, M. Manuela
Lanceros-Mendez, Senentxu
dc.subject.por.fl_str_mv Batteries
polymer electrolyte
membrane separators
electrospinning
piezoelectric
ionic conductivity
topic Batteries
polymer electrolyte
membrane separators
electrospinning
piezoelectric
ionic conductivity
description Battery separators based on electrospun membranes of poly(vinylidene fluoride) (PVDF) have been prepared in order to study the effect of fiber alignment on the performance and characteristics of the membrane. The prepared membranes show an average fiber diameter of 272 nm and a degree of porosity of 87 %. The gel polymer electrolytes are prepared by soaking the membranes in the electrolyte solution. The alignment of the fibers improves the mechanical properties for the electrospun membranes. Further, the microstructure of the membrane also plays an important role in the ionic conductivity, being higher for the random electrospun membrane due to the lower tortuosity value. Independently of the microstructure, both membranes show good electrochemical stability up to 5.0 V versus Li/Li+. These results show that electrospun membranes based on PVDF are appropriate for battery separators in lithium-ion battery applications, the random membranes showing a better overall performance.
publishDate 2013
dc.date.none.fl_str_mv 2013-12-09T19:46:46Z
2013-12-09T19:46:46Z
2013-12-09T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/11110/380
oai:ciencipca.ipca.pt:11110/380
url http://hdl.handle.net/11110/380
identifier_str_mv oai:ciencipca.ipca.pt:11110/380
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0022-2461
1573-4803
http://hdl.handle.net/11110/380
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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