Sn-containing electrocatalysts with a reduced amount of palladium for alkaline direct ethanol fuel cell applications
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.renene.2020.05.050 http://hdl.handle.net/11449/201827 |
Resumo: | In this work electrocatalysts based on Pd and Sn nanoparticles supported on Vulcan XC-72 carbon black with a reduced amount of Pd were prepared. We evaluated its electrocatalytic activity for ethanol oxidation reaction (EOR) in alkaline direct ethanol fuel cells (ADEFCs). The electrocatalysts were synthesized in different Pd:Sn mass ratios (1:3, 1:1, 3:1 and 1:0) on the carbon containing 20 wt % of metal. The XRD patterns of the electrocatalysts revealed an alloy formation between Pd and Sn, and the electrocatalysts with lowest amount of Pd (Pd1Sn3/Vulcan XC-72) and highest electrochemically active surface area (ECSA) presented best performance in ADEFC experiments with a maximum current density and power density of 152 mA cm-2 and 42 mW cm-2, respectively. Besides the current density three times higher for EOR than that of the pure Pd, the open circuit potential of 939 mV at an operation temperature of 80 °C yielded the higher carbonate production. This behavior can be attributed to the presence of oxophilic Sn species, which improve the ability to remove adsorbed CO. Oxygenated species, vacancies and defects detected in the structure of PdxSny/Vulcan XC-72 catalysts are accounted for their high activity, making them very promising for the application in ADEFC. |
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Sn-containing electrocatalysts with a reduced amount of palladium for alkaline direct ethanol fuel cell applicationsAlkaline direct ethanol fuel cellsEthanol oxidation reactionHybrid electrocatalystsPalladiumSn-containing hybrid electrocatalystsIn this work electrocatalysts based on Pd and Sn nanoparticles supported on Vulcan XC-72 carbon black with a reduced amount of Pd were prepared. We evaluated its electrocatalytic activity for ethanol oxidation reaction (EOR) in alkaline direct ethanol fuel cells (ADEFCs). The electrocatalysts were synthesized in different Pd:Sn mass ratios (1:3, 1:1, 3:1 and 1:0) on the carbon containing 20 wt % of metal. The XRD patterns of the electrocatalysts revealed an alloy formation between Pd and Sn, and the electrocatalysts with lowest amount of Pd (Pd1Sn3/Vulcan XC-72) and highest electrochemically active surface area (ECSA) presented best performance in ADEFC experiments with a maximum current density and power density of 152 mA cm-2 and 42 mW cm-2, respectively. Besides the current density three times higher for EOR than that of the pure Pd, the open circuit potential of 939 mV at an operation temperature of 80 °C yielded the higher carbonate production. This behavior can be attributed to the presence of oxophilic Sn species, which improve the ability to remove adsorbed CO. Oxygenated species, vacancies and defects detected in the structure of PdxSny/Vulcan XC-72 catalysts are accounted for their high activity, making them very promising for the application in ADEFC.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Laboratório de Eletroquímica e Materiais Nanoestruturados (LEMN) - Centro de Ciências Naturais e Humanas (CCNH) Universidade Federal do ABC (UFABC), Rua Santa Adélia 166, Bairro BanguInstituto Federal de Educação Ciência e Tecnologia do Maranhão (IFMA) Campus Açailândia, R. Projetada, s/nInstituto de Química UNESP Universidade Estadual PaulistaInstituto de Química UNESP Universidade Estadual PaulistaFAPESP: 2015/10314-8FAPESP: 2017/00819-8FAPESP: 2017/10118-0FAPESP: 2017/21846-6FAPESP: 2017/22976-0FAPESP: 2017/26288-1FAPESP: 2018/26307-9CNPq: 406612/2013-7Universidade Federal do ABC (UFABC)Ciência e Tecnologia do Maranhão (IFMA)Universidade Estadual Paulista (Unesp)Pinheiro, Victor S.Souza, Felipe M.Gentil, Tuani C.Nascimento, Aline N.Böhnstedt, PaulaParreira, Luanna S.Paz, Edson C.Hammer, Peter [UNESP]Sairre, Mirela I.Batista, Bruno L.Santos, Mauro C.2020-12-12T02:42:51Z2020-12-12T02:42:51Z2020-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article49-63http://dx.doi.org/10.1016/j.renene.2020.05.050Renewable Energy, v. 158, p. 49-63.1879-06820960-1481http://hdl.handle.net/11449/20182710.1016/j.renene.2020.05.0502-s2.0-85085654714Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRenewable Energyinfo:eu-repo/semantics/openAccess2021-10-23T00:00:09Zoai:repositorio.unesp.br:11449/201827Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T00:00:09Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Sn-containing electrocatalysts with a reduced amount of palladium for alkaline direct ethanol fuel cell applications |
title |
Sn-containing electrocatalysts with a reduced amount of palladium for alkaline direct ethanol fuel cell applications |
spellingShingle |
Sn-containing electrocatalysts with a reduced amount of palladium for alkaline direct ethanol fuel cell applications Pinheiro, Victor S. Alkaline direct ethanol fuel cells Ethanol oxidation reaction Hybrid electrocatalysts Palladium Sn-containing hybrid electrocatalysts |
title_short |
Sn-containing electrocatalysts with a reduced amount of palladium for alkaline direct ethanol fuel cell applications |
title_full |
Sn-containing electrocatalysts with a reduced amount of palladium for alkaline direct ethanol fuel cell applications |
title_fullStr |
Sn-containing electrocatalysts with a reduced amount of palladium for alkaline direct ethanol fuel cell applications |
title_full_unstemmed |
Sn-containing electrocatalysts with a reduced amount of palladium for alkaline direct ethanol fuel cell applications |
title_sort |
Sn-containing electrocatalysts with a reduced amount of palladium for alkaline direct ethanol fuel cell applications |
author |
Pinheiro, Victor S. |
author_facet |
Pinheiro, Victor S. Souza, Felipe M. Gentil, Tuani C. Nascimento, Aline N. Böhnstedt, Paula Parreira, Luanna S. Paz, Edson C. Hammer, Peter [UNESP] Sairre, Mirela I. Batista, Bruno L. Santos, Mauro C. |
author_role |
author |
author2 |
Souza, Felipe M. Gentil, Tuani C. Nascimento, Aline N. Böhnstedt, Paula Parreira, Luanna S. Paz, Edson C. Hammer, Peter [UNESP] Sairre, Mirela I. Batista, Bruno L. Santos, Mauro C. |
author2_role |
author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal do ABC (UFABC) Ciência e Tecnologia do Maranhão (IFMA) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Pinheiro, Victor S. Souza, Felipe M. Gentil, Tuani C. Nascimento, Aline N. Böhnstedt, Paula Parreira, Luanna S. Paz, Edson C. Hammer, Peter [UNESP] Sairre, Mirela I. Batista, Bruno L. Santos, Mauro C. |
dc.subject.por.fl_str_mv |
Alkaline direct ethanol fuel cells Ethanol oxidation reaction Hybrid electrocatalysts Palladium Sn-containing hybrid electrocatalysts |
topic |
Alkaline direct ethanol fuel cells Ethanol oxidation reaction Hybrid electrocatalysts Palladium Sn-containing hybrid electrocatalysts |
description |
In this work electrocatalysts based on Pd and Sn nanoparticles supported on Vulcan XC-72 carbon black with a reduced amount of Pd were prepared. We evaluated its electrocatalytic activity for ethanol oxidation reaction (EOR) in alkaline direct ethanol fuel cells (ADEFCs). The electrocatalysts were synthesized in different Pd:Sn mass ratios (1:3, 1:1, 3:1 and 1:0) on the carbon containing 20 wt % of metal. The XRD patterns of the electrocatalysts revealed an alloy formation between Pd and Sn, and the electrocatalysts with lowest amount of Pd (Pd1Sn3/Vulcan XC-72) and highest electrochemically active surface area (ECSA) presented best performance in ADEFC experiments with a maximum current density and power density of 152 mA cm-2 and 42 mW cm-2, respectively. Besides the current density three times higher for EOR than that of the pure Pd, the open circuit potential of 939 mV at an operation temperature of 80 °C yielded the higher carbonate production. This behavior can be attributed to the presence of oxophilic Sn species, which improve the ability to remove adsorbed CO. Oxygenated species, vacancies and defects detected in the structure of PdxSny/Vulcan XC-72 catalysts are accounted for their high activity, making them very promising for the application in ADEFC. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T02:42:51Z 2020-12-12T02:42:51Z 2020-10-01 |
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.renene.2020.05.050 Renewable Energy, v. 158, p. 49-63. 1879-0682 0960-1481 http://hdl.handle.net/11449/201827 10.1016/j.renene.2020.05.050 2-s2.0-85085654714 |
url |
http://dx.doi.org/10.1016/j.renene.2020.05.050 http://hdl.handle.net/11449/201827 |
identifier_str_mv |
Renewable Energy, v. 158, p. 49-63. 1879-0682 0960-1481 10.1016/j.renene.2020.05.050 2-s2.0-85085654714 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Renewable Energy |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
49-63 |
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_ |
1797790234332626944 |