Fluorine-containing oxygen electrodes of the nickelate family for proton-conducting electrochemical cells
Autor(a) principal: | |
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Data de Publicação: | 2020 |
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/10773/37212 |
Resumo: | In the present work, the anionic doping of a Ba-containing Nd2NiO4+δ mixed conductor is proposed as an efficient means of tuning its functional properties for application as an oxygen/steam electrode material in protonic ceramic electrolysis cells (PCECs). Single-phase Nd1.9Ba0.1NiO4+δFγ (γ = 0, 0.03, 0.05, 0.07 and 0.1) nickelates having a K2NiF4-type structure were prepared and comprehensively characterised in the range from room temperature to 1000 °C. A combination of complimentary techniques, including 4-probe DC electrical measurements, an electron-blocking method, electrochemical impedance spectroscopy and analysis of equivalent circuit schemes and distribution of relaxation times, was employed to reveal the fundamental correlations between electrical properties, oxygen-ionic transport and electrochemical performance of fluorinated nickelates. The highest ionic conductivity in combination with the lowest electrode polarisation resistance was found for the composition with γ = 0.05. The enhanced transport properties of this material were attributed to mixed anion lattice effect. Electrochemical tests of an electrolysis cell based on a proton-conducting BaCe0.5Zr0.3Y0.1Y0.1O3–δ electrolyte with a Nd1.9Ba0.1NiO4+δF0.05 oxygen electrode demonstrated competitive performance compared to state-of-the-art PCECs, thus supporting the prospective viability of the proposed approach. |
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7160 |
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Fluorine-containing oxygen electrodes of the nickelate family for proton-conducting electrochemical cellsF-dopingNd2NiO4Proton-conducting electrolytesPCECs & PCFCsEnergy conversionDRT analysisIn the present work, the anionic doping of a Ba-containing Nd2NiO4+δ mixed conductor is proposed as an efficient means of tuning its functional properties for application as an oxygen/steam electrode material in protonic ceramic electrolysis cells (PCECs). Single-phase Nd1.9Ba0.1NiO4+δFγ (γ = 0, 0.03, 0.05, 0.07 and 0.1) nickelates having a K2NiF4-type structure were prepared and comprehensively characterised in the range from room temperature to 1000 °C. A combination of complimentary techniques, including 4-probe DC electrical measurements, an electron-blocking method, electrochemical impedance spectroscopy and analysis of equivalent circuit schemes and distribution of relaxation times, was employed to reveal the fundamental correlations between electrical properties, oxygen-ionic transport and electrochemical performance of fluorinated nickelates. The highest ionic conductivity in combination with the lowest electrode polarisation resistance was found for the composition with γ = 0.05. The enhanced transport properties of this material were attributed to mixed anion lattice effect. Electrochemical tests of an electrolysis cell based on a proton-conducting BaCe0.5Zr0.3Y0.1Y0.1O3–δ electrolyte with a Nd1.9Ba0.1NiO4+δF0.05 oxygen electrode demonstrated competitive performance compared to state-of-the-art PCECs, thus supporting the prospective viability of the proposed approach.Elsevier2023-04-20T10:01:40Z2020-03-20T00:00:00Z2020-03-20info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/37212eng0013-468610.1016/j.electacta.2020.135808Tarutin, Artem P.Vdovin, Gennady K.Medvedev, Dmitry A.Yaremchenko, Aleksey A.info: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:RCAAP2024-02-22T12:11:47Zoai:ria.ua.pt:10773/37212Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:07:50.365879Repositório 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 |
Fluorine-containing oxygen electrodes of the nickelate family for proton-conducting electrochemical cells |
title |
Fluorine-containing oxygen electrodes of the nickelate family for proton-conducting electrochemical cells |
spellingShingle |
Fluorine-containing oxygen electrodes of the nickelate family for proton-conducting electrochemical cells Tarutin, Artem P. F-doping Nd2NiO4 Proton-conducting electrolytes PCECs & PCFCs Energy conversion DRT analysis |
title_short |
Fluorine-containing oxygen electrodes of the nickelate family for proton-conducting electrochemical cells |
title_full |
Fluorine-containing oxygen electrodes of the nickelate family for proton-conducting electrochemical cells |
title_fullStr |
Fluorine-containing oxygen electrodes of the nickelate family for proton-conducting electrochemical cells |
title_full_unstemmed |
Fluorine-containing oxygen electrodes of the nickelate family for proton-conducting electrochemical cells |
title_sort |
Fluorine-containing oxygen electrodes of the nickelate family for proton-conducting electrochemical cells |
author |
Tarutin, Artem P. |
author_facet |
Tarutin, Artem P. Vdovin, Gennady K. Medvedev, Dmitry A. Yaremchenko, Aleksey A. |
author_role |
author |
author2 |
Vdovin, Gennady K. Medvedev, Dmitry A. Yaremchenko, Aleksey A. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Tarutin, Artem P. Vdovin, Gennady K. Medvedev, Dmitry A. Yaremchenko, Aleksey A. |
dc.subject.por.fl_str_mv |
F-doping Nd2NiO4 Proton-conducting electrolytes PCECs & PCFCs Energy conversion DRT analysis |
topic |
F-doping Nd2NiO4 Proton-conducting electrolytes PCECs & PCFCs Energy conversion DRT analysis |
description |
In the present work, the anionic doping of a Ba-containing Nd2NiO4+δ mixed conductor is proposed as an efficient means of tuning its functional properties for application as an oxygen/steam electrode material in protonic ceramic electrolysis cells (PCECs). Single-phase Nd1.9Ba0.1NiO4+δFγ (γ = 0, 0.03, 0.05, 0.07 and 0.1) nickelates having a K2NiF4-type structure were prepared and comprehensively characterised in the range from room temperature to 1000 °C. A combination of complimentary techniques, including 4-probe DC electrical measurements, an electron-blocking method, electrochemical impedance spectroscopy and analysis of equivalent circuit schemes and distribution of relaxation times, was employed to reveal the fundamental correlations between electrical properties, oxygen-ionic transport and electrochemical performance of fluorinated nickelates. The highest ionic conductivity in combination with the lowest electrode polarisation resistance was found for the composition with γ = 0.05. The enhanced transport properties of this material were attributed to mixed anion lattice effect. Electrochemical tests of an electrolysis cell based on a proton-conducting BaCe0.5Zr0.3Y0.1Y0.1O3–δ electrolyte with a Nd1.9Ba0.1NiO4+δF0.05 oxygen electrode demonstrated competitive performance compared to state-of-the-art PCECs, thus supporting the prospective viability of the proposed approach. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-03-20T00:00:00Z 2020-03-20 2023-04-20T10:01:40Z |
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/10773/37212 |
url |
http://hdl.handle.net/10773/37212 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0013-4686 10.1016/j.electacta.2020.135808 |
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 |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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 |
repository.mail.fl_str_mv |
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1799137732477321216 |