Effect of fiber alignment in gelled electrospun membranes based on poly(vinylidene fluoride) for battery applications
Autor(a) principal: | |
---|---|
Data de Publicação: | 2013 |
Outros Autores: | , , , |
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. |
id |
RCAP_20c6ea227576c153eecf84c13aeb12f0 |
---|---|
oai_identifier_str |
oai:ciencipca.ipca.pt:11110/380 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
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:RCAAP2022-09-05T12:51:58Zoai:ciencipca.ipca.pt:11110/380Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:00:48.540362Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
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 instacron:RCAAP |
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) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799129878062170112 |