Stability of LaNiO3 gas diffusion oxygen electrodes
Autor(a) principal: | |
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Data de Publicação: | 2014 |
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/10400.9/2209 |
Resumo: | In this work LaNiO3 perovskite-type oxide, prepared by a self-combustion method, was optimized for activity and stability as an anode material for water electrolysis. A full electrochemical study was conducted in order to kinetically characterize electrodes prepared using carbon paper as a base for porous gas-diffusion electrodes in alkaline media, regarding water oxidation and oxygen reduction reactions at room temperature. An electrode stability study was performed by potential cycling and at constant current density, using cyclic voltammetry and electrochemical impedance spectroscopy to check on stability after cycling with complementary scanning electron microscopy/energy dispersive X-ray spectrometry (SEM/EDS) analysis of fresh and degraded electrodes. Comparison was made using nickel foam as a support for LaNiO3 deposition. Carbon instability in the potential region of interest contrasted with the lower contact resistance between the oxide and support of the Ni foam. Higher metal oxide loadings and dimensional stability were also possible. |
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Stability of LaNiO3 gas diffusion oxygen electrodesPerovskite-type oxidesElectrolysisAnode materialsRegenerative fuel cellsGas diffusion electrodesIn this work LaNiO3 perovskite-type oxide, prepared by a self-combustion method, was optimized for activity and stability as an anode material for water electrolysis. A full electrochemical study was conducted in order to kinetically characterize electrodes prepared using carbon paper as a base for porous gas-diffusion electrodes in alkaline media, regarding water oxidation and oxygen reduction reactions at room temperature. An electrode stability study was performed by potential cycling and at constant current density, using cyclic voltammetry and electrochemical impedance spectroscopy to check on stability after cycling with complementary scanning electron microscopy/energy dispersive X-ray spectrometry (SEM/EDS) analysis of fresh and degraded electrodes. Comparison was made using nickel foam as a support for LaNiO3 deposition. Carbon instability in the potential region of interest contrasted with the lower contact resistance between the oxide and support of the Ni foam. Higher metal oxide loadings and dimensional stability were also possible.SpringerRepositório do LNEGSilva, R. A.Soares, C. O.Carvalho, M. D.Rangel, C. M.Pereira, M. I. da Silva2014-02-25T10:12:21Z2014-01-01T00:00:00Z2014-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/2209engSilva, R.A.; Soares, C.O.; Carvalho, M.D.; Rangel, C.M.; Pereira, M.I. da Silva. Stability of LaNiO3 gas diffusion oxygen electrodes. In: Journal of Solid State Electrochemistry, 2014, Vol. 18, nº 3, p. 821-8311432-8488info: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:RCAAP2022-09-06T12:27:04Zoai:repositorio.lneg.pt:10400.9/2209Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:35:05.622007Repositório 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 |
Stability of LaNiO3 gas diffusion oxygen electrodes |
title |
Stability of LaNiO3 gas diffusion oxygen electrodes |
spellingShingle |
Stability of LaNiO3 gas diffusion oxygen electrodes Silva, R. A. Perovskite-type oxides Electrolysis Anode materials Regenerative fuel cells Gas diffusion electrodes |
title_short |
Stability of LaNiO3 gas diffusion oxygen electrodes |
title_full |
Stability of LaNiO3 gas diffusion oxygen electrodes |
title_fullStr |
Stability of LaNiO3 gas diffusion oxygen electrodes |
title_full_unstemmed |
Stability of LaNiO3 gas diffusion oxygen electrodes |
title_sort |
Stability of LaNiO3 gas diffusion oxygen electrodes |
author |
Silva, R. A. |
author_facet |
Silva, R. A. Soares, C. O. Carvalho, M. D. Rangel, C. M. Pereira, M. I. da Silva |
author_role |
author |
author2 |
Soares, C. O. Carvalho, M. D. Rangel, C. M. Pereira, M. I. da Silva |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Repositório do LNEG |
dc.contributor.author.fl_str_mv |
Silva, R. A. Soares, C. O. Carvalho, M. D. Rangel, C. M. Pereira, M. I. da Silva |
dc.subject.por.fl_str_mv |
Perovskite-type oxides Electrolysis Anode materials Regenerative fuel cells Gas diffusion electrodes |
topic |
Perovskite-type oxides Electrolysis Anode materials Regenerative fuel cells Gas diffusion electrodes |
description |
In this work LaNiO3 perovskite-type oxide, prepared by a self-combustion method, was optimized for activity and stability as an anode material for water electrolysis. A full electrochemical study was conducted in order to kinetically characterize electrodes prepared using carbon paper as a base for porous gas-diffusion electrodes in alkaline media, regarding water oxidation and oxygen reduction reactions at room temperature. An electrode stability study was performed by potential cycling and at constant current density, using cyclic voltammetry and electrochemical impedance spectroscopy to check on stability after cycling with complementary scanning electron microscopy/energy dispersive X-ray spectrometry (SEM/EDS) analysis of fresh and degraded electrodes. Comparison was made using nickel foam as a support for LaNiO3 deposition. Carbon instability in the potential region of interest contrasted with the lower contact resistance between the oxide and support of the Ni foam. Higher metal oxide loadings and dimensional stability were also possible. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-02-25T10:12:21Z 2014-01-01T00:00:00Z 2014-01-01T00:00:00Z |
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/10400.9/2209 |
url |
http://hdl.handle.net/10400.9/2209 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Silva, R.A.; Soares, C.O.; Carvalho, M.D.; Rangel, C.M.; Pereira, M.I. da Silva. Stability of LaNiO3 gas diffusion oxygen electrodes. In: Journal of Solid State Electrochemistry, 2014, Vol. 18, nº 3, p. 821-831 1432-8488 |
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 |
Springer |
publisher.none.fl_str_mv |
Springer |
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 |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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