Di-urea cross-linked poly(oxyethylene)/siloxane ormolytes for lithium batteries

Detalhes bibliográficos
Autor(a) principal: Nunes, Sílvia
Data de Publicação: 2005
Outros Autores: Zea Bermudez, V. de, Ostrovskii, David, Silva, Maria Manuela, Barros, Sandra Cerqueira, Smith, Michael John, Carlos, Luís, Rocha, João, Morales, Enrique
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/1767
Resumo: Poly(oxyethylene)( POE)/siloxane hybrids (di-ureasils) doped with a wide concentration range of lithium triflate were investigated. The host matrix of these materials (d-U(2000)) is a sol-gel derived siliceous network to which POE chains with about 40 repeat units are bonded through urea linkages. Xerogels with n between 500 and 5 (where n is the molar ration of OCH2CH2 repeat units to lithium íons) were obtained as amorphous monoliths thermally stable up to at least 340ºC. A crystalline POE/LiCF3SO3 complex was detected spectroscopically in samples with compositions of n less than 10. Below 90ºC the ormolyte with n = 20 exhibits the highest ionic conductivity of the series characterized. The redox stability of this material is about 4.1 volts.
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spelling Di-urea cross-linked poly(oxyethylene)/siloxane ormolytes for lithium batteriesSol-gel synthesisIonic conductivityThermal analysisSolid polymer electrolytesScience & TechnologyPoly(oxyethylene)( POE)/siloxane hybrids (di-ureasils) doped with a wide concentration range of lithium triflate were investigated. The host matrix of these materials (d-U(2000)) is a sol-gel derived siliceous network to which POE chains with about 40 repeat units are bonded through urea linkages. Xerogels with n between 500 and 5 (where n is the molar ration of OCH2CH2 repeat units to lithium íons) were obtained as amorphous monoliths thermally stable up to at least 340ºC. A crystalline POE/LiCF3SO3 complex was detected spectroscopically in samples with compositions of n less than 10. Below 90ºC the ormolyte with n = 20 exhibits the highest ionic conductivity of the series characterized. The redox stability of this material is about 4.1 volts.Electrochemical SocietyUniversidade do MinhoNunes, SílviaZea Bermudez, V. deOstrovskii, DavidSilva, Maria ManuelaBarros, Sandra CerqueiraSmith, Michael JohnCarlos, LuísRocha, JoãoMorales, Enrique20052005-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/1767eng"Journal of the electrochemical society". 152 (2005) 429-438.0013-465110.1149/1.1851051info: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:RCAAP2023-07-21T12:14:56Zoai:repositorium.sdum.uminho.pt:1822/1767Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:07:18.758410Repositório 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 Di-urea cross-linked poly(oxyethylene)/siloxane ormolytes for lithium batteries
title Di-urea cross-linked poly(oxyethylene)/siloxane ormolytes for lithium batteries
spellingShingle Di-urea cross-linked poly(oxyethylene)/siloxane ormolytes for lithium batteries
Nunes, Sílvia
Sol-gel synthesis
Ionic conductivity
Thermal analysis
Solid polymer electrolytes
Science & Technology
title_short Di-urea cross-linked poly(oxyethylene)/siloxane ormolytes for lithium batteries
title_full Di-urea cross-linked poly(oxyethylene)/siloxane ormolytes for lithium batteries
title_fullStr Di-urea cross-linked poly(oxyethylene)/siloxane ormolytes for lithium batteries
title_full_unstemmed Di-urea cross-linked poly(oxyethylene)/siloxane ormolytes for lithium batteries
title_sort Di-urea cross-linked poly(oxyethylene)/siloxane ormolytes for lithium batteries
author Nunes, Sílvia
author_facet Nunes, Sílvia
Zea Bermudez, V. de
Ostrovskii, David
Silva, Maria Manuela
Barros, Sandra Cerqueira
Smith, Michael John
Carlos, Luís
Rocha, João
Morales, Enrique
author_role author
author2 Zea Bermudez, V. de
Ostrovskii, David
Silva, Maria Manuela
Barros, Sandra Cerqueira
Smith, Michael John
Carlos, Luís
Rocha, João
Morales, Enrique
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Nunes, Sílvia
Zea Bermudez, V. de
Ostrovskii, David
Silva, Maria Manuela
Barros, Sandra Cerqueira
Smith, Michael John
Carlos, Luís
Rocha, João
Morales, Enrique
dc.subject.por.fl_str_mv Sol-gel synthesis
Ionic conductivity
Thermal analysis
Solid polymer electrolytes
Science & Technology
topic Sol-gel synthesis
Ionic conductivity
Thermal analysis
Solid polymer electrolytes
Science & Technology
description Poly(oxyethylene)( POE)/siloxane hybrids (di-ureasils) doped with a wide concentration range of lithium triflate were investigated. The host matrix of these materials (d-U(2000)) is a sol-gel derived siliceous network to which POE chains with about 40 repeat units are bonded through urea linkages. Xerogels with n between 500 and 5 (where n is the molar ration of OCH2CH2 repeat units to lithium íons) were obtained as amorphous monoliths thermally stable up to at least 340ºC. A crystalline POE/LiCF3SO3 complex was detected spectroscopically in samples with compositions of n less than 10. Below 90ºC the ormolyte with n = 20 exhibits the highest ionic conductivity of the series characterized. The redox stability of this material is about 4.1 volts.
publishDate 2005
dc.date.none.fl_str_mv 2005
2005-01-01T00:00:00Z
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/1822/1767
url http://hdl.handle.net/1822/1767
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Journal of the electrochemical society". 152 (2005) 429-438.
0013-4651
10.1149/1.1851051
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Electrochemical Society
publisher.none.fl_str_mv Electrochemical Society
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
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