Nafion® phosphonic acid composite membranes for proton exchange membranes fuel cells
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/24378 |
Resumo: | The fuel cells are electrochemical devices that convert the chemical energy stored in a fuel, directly and efficiently into electrical energy. Among the fuel cells, the proton exchange membrane fuel cells (PEMFCs) are considered promising power sources, due to their high power density and high power-to-weight ratio and the proton exchange membranes are considered a key material for the operation of these cells. Usually, these membranes are made of organic polymers containing acidic functionalities, but their proton transport properties strongly depend on their water content, which limit their operation temperatures up to 90ºC. These limitations have fostered the interest in research and development of new alternative membranes [1,2]. In order to develop novel membranes for application in PEMFCs, we have synthesized and characterized mono- or 1,4-dissubstituted aryl derivatives with phosphonic (PAs) and bisphosphonic acids (BPs) groups (Fig. 1). The new Nafion® membranes, doped with PAs or BPs, were prepared and characterized. Their proton conductivity was evaluated by electrochemical impedance spectroscopy (EIS) to analyse the influence of the structure of dopants and the method of the preparation of the membranes. |
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Nafion® phosphonic acid composite membranes for proton exchange membranes fuel cellsNafion doped membranesPhosphonic dopantsProton Exchange membranesFuel cellsThe fuel cells are electrochemical devices that convert the chemical energy stored in a fuel, directly and efficiently into electrical energy. Among the fuel cells, the proton exchange membrane fuel cells (PEMFCs) are considered promising power sources, due to their high power density and high power-to-weight ratio and the proton exchange membranes are considered a key material for the operation of these cells. Usually, these membranes are made of organic polymers containing acidic functionalities, but their proton transport properties strongly depend on their water content, which limit their operation temperatures up to 90ºC. These limitations have fostered the interest in research and development of new alternative membranes [1,2]. In order to develop novel membranes for application in PEMFCs, we have synthesized and characterized mono- or 1,4-dissubstituted aryl derivatives with phosphonic (PAs) and bisphosphonic acids (BPs) groups (Fig. 1). The new Nafion® membranes, doped with PAs or BPs, were prepared and characterized. Their proton conductivity was evaluated by electrochemical impedance spectroscopy (EIS) to analyse the influence of the structure of dopants and the method of the preparation of the membranes.ANM2018 Advanced Nanomaterials2019-01-31T11:07:35Z2019-01-312018-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10174/24378http://hdl.handle.net/10174/24378engFátima C. Teixeira, Ana I. de Sá, António P. S. Teixeira e Carmen M. Rangel, "Nafion® phosphonic acid composite membranes for proton exchange membranes fuel cells”, (Abstract ID: 519), ANM2018 Advanced Nanomaterials, Aveiro, Portugal, 2018 (Livro de Resumos e Poster).naonaosimQUI - Comunicações - Em Congressos Científicos Nacionaisapsteix@uevora.ptfatima.teixeira@lneg.ptndnd307Teixeira, António P. S.Teixeira, Fátima C.Rangel, Carmen M.Sá, Ana I. deinfo: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:RCAAP2024-01-03T19:17:20Zoai:dspace.uevora.pt:10174/24378Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:15:03.446796Repositório 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 |
Nafion® phosphonic acid composite membranes for proton exchange membranes fuel cells |
title |
Nafion® phosphonic acid composite membranes for proton exchange membranes fuel cells |
spellingShingle |
Nafion® phosphonic acid composite membranes for proton exchange membranes fuel cells Teixeira, António P. S. Nafion doped membranes Phosphonic dopants Proton Exchange membranes Fuel cells |
title_short |
Nafion® phosphonic acid composite membranes for proton exchange membranes fuel cells |
title_full |
Nafion® phosphonic acid composite membranes for proton exchange membranes fuel cells |
title_fullStr |
Nafion® phosphonic acid composite membranes for proton exchange membranes fuel cells |
title_full_unstemmed |
Nafion® phosphonic acid composite membranes for proton exchange membranes fuel cells |
title_sort |
Nafion® phosphonic acid composite membranes for proton exchange membranes fuel cells |
author |
Teixeira, António P. S. |
author_facet |
Teixeira, António P. S. Teixeira, Fátima C. Rangel, Carmen M. Sá, Ana I. de |
author_role |
author |
author2 |
Teixeira, Fátima C. Rangel, Carmen M. Sá, Ana I. de |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Teixeira, António P. S. Teixeira, Fátima C. Rangel, Carmen M. Sá, Ana I. de |
dc.subject.por.fl_str_mv |
Nafion doped membranes Phosphonic dopants Proton Exchange membranes Fuel cells |
topic |
Nafion doped membranes Phosphonic dopants Proton Exchange membranes Fuel cells |
description |
The fuel cells are electrochemical devices that convert the chemical energy stored in a fuel, directly and efficiently into electrical energy. Among the fuel cells, the proton exchange membrane fuel cells (PEMFCs) are considered promising power sources, due to their high power density and high power-to-weight ratio and the proton exchange membranes are considered a key material for the operation of these cells. Usually, these membranes are made of organic polymers containing acidic functionalities, but their proton transport properties strongly depend on their water content, which limit their operation temperatures up to 90ºC. These limitations have fostered the interest in research and development of new alternative membranes [1,2]. In order to develop novel membranes for application in PEMFCs, we have synthesized and characterized mono- or 1,4-dissubstituted aryl derivatives with phosphonic (PAs) and bisphosphonic acids (BPs) groups (Fig. 1). The new Nafion® membranes, doped with PAs or BPs, were prepared and characterized. Their proton conductivity was evaluated by electrochemical impedance spectroscopy (EIS) to analyse the influence of the structure of dopants and the method of the preparation of the membranes. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-07-01T00:00:00Z 2019-01-31T11:07:35Z 2019-01-31 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/24378 http://hdl.handle.net/10174/24378 |
url |
http://hdl.handle.net/10174/24378 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Fátima C. Teixeira, Ana I. de Sá, António P. S. Teixeira e Carmen M. Rangel, "Nafion® phosphonic acid composite membranes for proton exchange membranes fuel cells”, (Abstract ID: 519), ANM2018 Advanced Nanomaterials, Aveiro, Portugal, 2018 (Livro de Resumos e Poster). nao nao sim QUI - Comunicações - Em Congressos Científicos Nacionais apsteix@uevora.pt fatima.teixeira@lneg.pt nd nd 307 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
ANM2018 Advanced Nanomaterials |
publisher.none.fl_str_mv |
ANM2018 Advanced Nanomaterials |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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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 |
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1799136632664752128 |