Carbon foam composites based on expanded graphite for electrochemical application
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.diamond.2020.107730 http://hdl.handle.net/11449/201486 |
Resumo: | Polymer composites containing modified graphite structures as fillers have been successfully processed exhibiting attractive features for different applications. Carbon foams derived from polymer precursor is brittle and the addition of some reinforcement to produce them is of great interest not only to improve their mechanical properties, but also to use them for multifunctional purposes. Considering the advantages provided by different modified graphite structures added to polymer composites, including low price, ease of dispersion, good thermal stability, electrical conductivity, and mechanical properties, expanded graphite (EG) was chosen as filler for the carbon foams processing to produce reticulated vitreous carbon (RVC) composites. Poly(furfuryl alcohol) was used as the carbon matrix precursor and different amounts of EG were dispersed in the resin to impregnate the polyurethane foam template. The RVC_EG composites were analyzed by scanning electron microscopy, Raman spectroscopy, X-ray diffraction, compression test, and cyclic voltammetry. EG presence on RVC_EG composites showed synergic effects contributing to their crystallinity, compressive strength, and charge transfer reactions improvement as well as their specific electrochemical surface area increase. Therefore, the effectiveness of the resulting carbon composite was mainly attributed to the good interaction between EG and carbon matrix. |
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Carbon foam composites based on expanded graphite for electrochemical applicationCarbon foam compositesElectrochemical characterizationExpanded graphitePoly(furfuryl alcohol)Polymer composites containing modified graphite structures as fillers have been successfully processed exhibiting attractive features for different applications. Carbon foams derived from polymer precursor is brittle and the addition of some reinforcement to produce them is of great interest not only to improve their mechanical properties, but also to use them for multifunctional purposes. Considering the advantages provided by different modified graphite structures added to polymer composites, including low price, ease of dispersion, good thermal stability, electrical conductivity, and mechanical properties, expanded graphite (EG) was chosen as filler for the carbon foams processing to produce reticulated vitreous carbon (RVC) composites. Poly(furfuryl alcohol) was used as the carbon matrix precursor and different amounts of EG were dispersed in the resin to impregnate the polyurethane foam template. The RVC_EG composites were analyzed by scanning electron microscopy, Raman spectroscopy, X-ray diffraction, compression test, and cyclic voltammetry. EG presence on RVC_EG composites showed synergic effects contributing to their crystallinity, compressive strength, and charge transfer reactions improvement as well as their specific electrochemical surface area increase. Therefore, the effectiveness of the resulting carbon composite was mainly attributed to the good interaction between EG and carbon matrix.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Instituto Nacional de Pesquisas Especiais – INPE, Av. dos Astronautas, 1758, Jd. GranjaDepartamento de Materiais e Tecnologia Univ Estadual Paulista (UNESP), Av. Dr Ariberto Pereira da Cunha 333Departamento de Materiais e Tecnologia Univ Estadual Paulista (UNESP), Av. Dr Ariberto Pereira da Cunha 333CNPq: 132316/2018-8FAPESP: 2017/10118-0Instituto Nacional de Pesquisas Especiais – INPEUniversidade Estadual Paulista (Unesp)da Silva, Raissa Samira RochaOishi, Silvia SizukaBotelho, Edson Cocchieri [UNESP]Ferreira, Neidenêi Gomes2020-12-12T02:33:45Z2020-12-12T02:33:45Z2020-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.diamond.2020.107730Diamond and Related Materials, v. 103.0925-9635http://hdl.handle.net/11449/20148610.1016/j.diamond.2020.1077302-s2.0-85078253625Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengDiamond and Related Materialsinfo:eu-repo/semantics/openAccess2021-10-22T20:03:55Zoai:repositorio.unesp.br:11449/201486Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T20:03:55Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Carbon foam composites based on expanded graphite for electrochemical application |
title |
Carbon foam composites based on expanded graphite for electrochemical application |
spellingShingle |
Carbon foam composites based on expanded graphite for electrochemical application da Silva, Raissa Samira Rocha Carbon foam composites Electrochemical characterization Expanded graphite Poly(furfuryl alcohol) |
title_short |
Carbon foam composites based on expanded graphite for electrochemical application |
title_full |
Carbon foam composites based on expanded graphite for electrochemical application |
title_fullStr |
Carbon foam composites based on expanded graphite for electrochemical application |
title_full_unstemmed |
Carbon foam composites based on expanded graphite for electrochemical application |
title_sort |
Carbon foam composites based on expanded graphite for electrochemical application |
author |
da Silva, Raissa Samira Rocha |
author_facet |
da Silva, Raissa Samira Rocha Oishi, Silvia Sizuka Botelho, Edson Cocchieri [UNESP] Ferreira, Neidenêi Gomes |
author_role |
author |
author2 |
Oishi, Silvia Sizuka Botelho, Edson Cocchieri [UNESP] Ferreira, Neidenêi Gomes |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Instituto Nacional de Pesquisas Especiais – INPE Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
da Silva, Raissa Samira Rocha Oishi, Silvia Sizuka Botelho, Edson Cocchieri [UNESP] Ferreira, Neidenêi Gomes |
dc.subject.por.fl_str_mv |
Carbon foam composites Electrochemical characterization Expanded graphite Poly(furfuryl alcohol) |
topic |
Carbon foam composites Electrochemical characterization Expanded graphite Poly(furfuryl alcohol) |
description |
Polymer composites containing modified graphite structures as fillers have been successfully processed exhibiting attractive features for different applications. Carbon foams derived from polymer precursor is brittle and the addition of some reinforcement to produce them is of great interest not only to improve their mechanical properties, but also to use them for multifunctional purposes. Considering the advantages provided by different modified graphite structures added to polymer composites, including low price, ease of dispersion, good thermal stability, electrical conductivity, and mechanical properties, expanded graphite (EG) was chosen as filler for the carbon foams processing to produce reticulated vitreous carbon (RVC) composites. Poly(furfuryl alcohol) was used as the carbon matrix precursor and different amounts of EG were dispersed in the resin to impregnate the polyurethane foam template. The RVC_EG composites were analyzed by scanning electron microscopy, Raman spectroscopy, X-ray diffraction, compression test, and cyclic voltammetry. EG presence on RVC_EG composites showed synergic effects contributing to their crystallinity, compressive strength, and charge transfer reactions improvement as well as their specific electrochemical surface area increase. Therefore, the effectiveness of the resulting carbon composite was mainly attributed to the good interaction between EG and carbon matrix. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T02:33:45Z 2020-12-12T02:33:45Z 2020-03-01 |
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://dx.doi.org/10.1016/j.diamond.2020.107730 Diamond and Related Materials, v. 103. 0925-9635 http://hdl.handle.net/11449/201486 10.1016/j.diamond.2020.107730 2-s2.0-85078253625 |
url |
http://dx.doi.org/10.1016/j.diamond.2020.107730 http://hdl.handle.net/11449/201486 |
identifier_str_mv |
Diamond and Related Materials, v. 103. 0925-9635 10.1016/j.diamond.2020.107730 2-s2.0-85078253625 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Diamond and Related Materials |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1792961796672323584 |