Nafion® phosphonic acid composite membranes for proton exchange membranes fuel cells

Detalhes bibliográficos
Autor(a) principal: Teixeira, António P. S.
Data de Publicação: 2018
Outros Autores: Teixeira, Fátima C., Rangel, Carmen M., Sá, Ana I. de
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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spelling 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
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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
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dc.publisher.none.fl_str_mv ANM2018 Advanced Nanomaterials
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