Conductive polymers derived heteroatom doped carbon catalysts for oxygen reduction reaction
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Tipo de documento: | Tese |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFSCAR |
Texto Completo: | https://repositorio.ufscar.br/handle/ufscar/13591 |
Resumo: | Fuel cell is an electrochemical energy conversion system, that holds the promise for clean and sustainable energy source. During the operation, this device generates electricity direct from electrochemical reactions between electrodes and electrolyte. The limiting half-cell oxygen reduction reaction (ORR) that takes place at cathode is kinetically sluggish and needs catalysts to overcome the thermodynamic limitations by increasing the rate of catalytic ORR. So far, platinum Pt-based catalysts have been proven the best electrocatalyst, however, they suffer with high cost, poor stability, and limited reserves in the Earth’s crust, restricting their use for commercial purpose. In this context, the search for metal-free carbon nanomaterials have emerged as an alternative to the counterpart Pt-based catalysts, especially owing to excellent electrical conductivity, large surface area, good stability, and low cost. This dissertation compiles the research work on heteroatom doped (single and co-doped) carbon catalysts for ORR electrocatalysis in alkaline medium. For the preparation of doped carbon nanomaterials, the conductive polymers, for example polyaniline (PANI), poly (3,4-ethylenedioxythiophene) (PEDOT), and polythiophene (PTH) were chosen as the precursors and sequentially polymerized by oxidative polymerization method onto silicon dioxide (SiO2) and silicon nitride (Si3N4) nanospheres followed by carbonization process. The selection of conductive polymers to obtain doped carbon nanomaterials was based on the following reasons: low-cost monomers; presence of heteroatom in the monomer unit, and intrinsic conductivity. By selecting an appropriate synthetic route for the preparation of conductive polymers coated on the templates (SiO2 and Si3N4), we produced high surface area, abundant mesoporous, and intrinsically doped carbon nanomaterials with ORR activity in alkaline medium. |
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Honorato, Ana Maria BorgesPessan, Luiz Antoniohttp://lattes.cnpq.br/8276650236213537Maia, João Manuel Luís Lopeshttp://lattes.cnpq.br/244190580504931533f6a9a8-9f7a-4b1a-9a04-34d2074f46142020-12-22T23:56:42Z2020-12-22T23:56:42Z2020-12-02HONORATO, Ana Maria Borges. Conductive polymers derived heteroatom doped carbon catalysts for oxygen reduction reaction. 2020. Tese (Doutorado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2020. Disponível em: https://repositorio.ufscar.br/handle/ufscar/13591.https://repositorio.ufscar.br/handle/ufscar/13591Fuel cell is an electrochemical energy conversion system, that holds the promise for clean and sustainable energy source. During the operation, this device generates electricity direct from electrochemical reactions between electrodes and electrolyte. The limiting half-cell oxygen reduction reaction (ORR) that takes place at cathode is kinetically sluggish and needs catalysts to overcome the thermodynamic limitations by increasing the rate of catalytic ORR. So far, platinum Pt-based catalysts have been proven the best electrocatalyst, however, they suffer with high cost, poor stability, and limited reserves in the Earth’s crust, restricting their use for commercial purpose. In this context, the search for metal-free carbon nanomaterials have emerged as an alternative to the counterpart Pt-based catalysts, especially owing to excellent electrical conductivity, large surface area, good stability, and low cost. This dissertation compiles the research work on heteroatom doped (single and co-doped) carbon catalysts for ORR electrocatalysis in alkaline medium. For the preparation of doped carbon nanomaterials, the conductive polymers, for example polyaniline (PANI), poly (3,4-ethylenedioxythiophene) (PEDOT), and polythiophene (PTH) were chosen as the precursors and sequentially polymerized by oxidative polymerization method onto silicon dioxide (SiO2) and silicon nitride (Si3N4) nanospheres followed by carbonization process. The selection of conductive polymers to obtain doped carbon nanomaterials was based on the following reasons: low-cost monomers; presence of heteroatom in the monomer unit, and intrinsic conductivity. By selecting an appropriate synthetic route for the preparation of conductive polymers coated on the templates (SiO2 and Si3N4), we produced high surface area, abundant mesoporous, and intrinsically doped carbon nanomaterials with ORR activity in alkaline medium.A célula de combustível é um sistema de conversão de energia eletroquímica que promete produção de energia limpa e sustentável. Durante a operação, este dispositivo gera eletricidade diretamente a partir de reações eletroquímicas entre eletrodos e eletrólitos. A reação de redução de oxigênio (ORR) que ocorre no cátodo, é uma reação cineticamente lenta e necessita de catalisador para que aumente a cinética da reação catalítica de redução de oxigênio. Até agora, catalisadores baseados em platina (Pt) foram considerados os melhores para a reação de redução de oxigênio, mas o catalisador de platina sofre com três problemas: alto custo, baixa estabilidade e reservas limitadas; por isso, o uso para fins comerciais é limitado. Nesta busca, por baixar o preço e igualar o desempenho de um catalisador alternativo ao catalisador nobre, as pesquisas em nanomateriais de carbono emergiram como uma alternativa para a eletrocatálise de redução de oxigênio devido à sua excelente condutividade elétrica, grande área superficial, boa estabilidade e baixo custo. Esta dissertação compila nossa pesquisa em catalisadores de carbono dopados e co-dopados para reação de redução de oxigênio em meio alcalino. Polímeros condutores foram escolhidos devido ao baixo custo; presença de heteroátomo na unidade monômera. Para a preparação de materiais de carbono, os polímeros condutores polianilina, poli-(3,4-etilenodioxitiofeno) e politiofeno, foram sequencialmente polimerizados recobrindo nanosferas de dióxido de silício e (SiO2) e nitreto de silício (Si3N4); seguidos de carbonização, resultando em materiais de carbono mesoporosos com alta área de superfície e intrinsecamente dopados com atividade catalítica de reação de redução de oxigênio em meio alcalino.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)CAPES/CWRU-DPB - Programa Duplo Diploma Macro/CAPES: 88882.197676/2017-01Programa CAPES/CWRU: 88887.145789/2017-00engUniversidade Federal de São CarlosCâmpus São CarlosPrograma de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEMUFSCarAttribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessPANIPTHPEDOTSiO2Si3N4ORRPolímeros condutoresCarbonizaçãoReação de redução de oxigênioConductive polymersCarbonizationOxygen reduction reactionENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOSConductive polymers derived heteroatom doped carbon catalysts for oxygen reduction reactionCatalisadores de carbono dopado com heteroátomos derivados de polímeros condutores para reação de redução de oxigênioinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesis60060027e170ed-63e5-4ae6-96cf-f7ccb26a3076reponame:Repositório Institucional da UFSCARinstname:Universidade Federal de São Carlos (UFSCAR)instacron:UFSCARCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8811https://repositorio.ufscar.br/bitstream/ufscar/13591/3/license_rdfe39d27027a6cc9cb039ad269a5db8e34MD53ORIGINALAna Maria Borges Honorato - Tese .pdfAna Maria Borges Honorato - Tese .pdfTeseapplication/pdf7060915https://repositorio.ufscar.br/bitstream/ufscar/13591/1/Ana%20Maria%20Borges%20Honorato%20-%20Tese%20.pdfc71fe15dd7fe53d67da60ee51eacc02aMD51BCO carta comprovante autoarquivamento (2).pdfBCO carta comprovante autoarquivamento (2).pdfCarta comprovanteapplication/pdf303541https://repositorio.ufscar.br/bitstream/ufscar/13591/2/BCO%20carta%20comprovante%20autoarquivamento%20%282%29.pdf78a4b71a83e84bf6c567544e3a5a0b5cMD52TEXTAna Maria Borges Honorato - Tese .pdf.txtAna Maria Borges Honorato - Tese .pdf.txtExtracted texttext/plain231210https://repositorio.ufscar.br/bitstream/ufscar/13591/4/Ana%20Maria%20Borges%20Honorato%20-%20Tese%20.pdf.txtbd3a329d45e08c3bf4f2480e39709228MD54BCO carta comprovante autoarquivamento (2).pdf.txtBCO carta comprovante autoarquivamento (2).pdf.txtExtracted texttext/plain1285https://repositorio.ufscar.br/bitstream/ufscar/13591/6/BCO%20carta%20comprovante%20autoarquivamento%20%282%29.pdf.txtb9712f9811fa145255daca58e36fce53MD56THUMBNAILAna Maria Borges Honorato - Tese .pdf.jpgAna Maria Borges Honorato - Tese .pdf.jpgIM Thumbnailimage/jpeg6283https://repositorio.ufscar.br/bitstream/ufscar/13591/5/Ana%20Maria%20Borges%20Honorato%20-%20Tese%20.pdf.jpg9234043be2a34a858a248f01ec65069fMD55BCO carta comprovante autoarquivamento (2).pdf.jpgBCO carta comprovante autoarquivamento (2).pdf.jpgIM Thumbnailimage/jpeg10548https://repositorio.ufscar.br/bitstream/ufscar/13591/7/BCO%20carta%20comprovante%20autoarquivamento%20%282%29.pdf.jpg7800a9397371a5ceda9ffd411a1c5e7eMD57ufscar/135912023-09-18 18:32:04.964oai:repositorio.ufscar.br:ufscar/13591Repositório InstitucionalPUBhttps://repositorio.ufscar.br/oai/requestopendoar:43222023-09-18T18:32:04Repositório Institucional da UFSCAR - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.eng.fl_str_mv |
Conductive polymers derived heteroatom doped carbon catalysts for oxygen reduction reaction |
dc.title.alternative.por.fl_str_mv |
Catalisadores de carbono dopado com heteroátomos derivados de polímeros condutores para reação de redução de oxigênio |
title |
Conductive polymers derived heteroatom doped carbon catalysts for oxygen reduction reaction |
spellingShingle |
Conductive polymers derived heteroatom doped carbon catalysts for oxygen reduction reaction Honorato, Ana Maria Borges PANI PTH PEDOT SiO2 Si3N4 ORR Polímeros condutores Carbonização Reação de redução de oxigênio Conductive polymers Carbonization Oxygen reduction reaction ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOS |
title_short |
Conductive polymers derived heteroatom doped carbon catalysts for oxygen reduction reaction |
title_full |
Conductive polymers derived heteroatom doped carbon catalysts for oxygen reduction reaction |
title_fullStr |
Conductive polymers derived heteroatom doped carbon catalysts for oxygen reduction reaction |
title_full_unstemmed |
Conductive polymers derived heteroatom doped carbon catalysts for oxygen reduction reaction |
title_sort |
Conductive polymers derived heteroatom doped carbon catalysts for oxygen reduction reaction |
author |
Honorato, Ana Maria Borges |
author_facet |
Honorato, Ana Maria Borges |
author_role |
author |
dc.contributor.authorlattes.por.fl_str_mv |
http://lattes.cnpq.br/2441905805049315 |
dc.contributor.author.fl_str_mv |
Honorato, Ana Maria Borges |
dc.contributor.advisor1.fl_str_mv |
Pessan, Luiz Antonio |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/8276650236213537 |
dc.contributor.advisor-co1.fl_str_mv |
Maia, João Manuel Luís Lopes |
dc.contributor.authorID.fl_str_mv |
33f6a9a8-9f7a-4b1a-9a04-34d2074f4614 |
contributor_str_mv |
Pessan, Luiz Antonio Maia, João Manuel Luís Lopes |
dc.subject.por.fl_str_mv |
PANI PTH PEDOT SiO2 Si3N4 ORR Polímeros condutores Carbonização Reação de redução de oxigênio |
topic |
PANI PTH PEDOT SiO2 Si3N4 ORR Polímeros condutores Carbonização Reação de redução de oxigênio Conductive polymers Carbonization Oxygen reduction reaction ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOS |
dc.subject.eng.fl_str_mv |
Conductive polymers Carbonization Oxygen reduction reaction |
dc.subject.cnpq.fl_str_mv |
ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOS |
description |
Fuel cell is an electrochemical energy conversion system, that holds the promise for clean and sustainable energy source. During the operation, this device generates electricity direct from electrochemical reactions between electrodes and electrolyte. The limiting half-cell oxygen reduction reaction (ORR) that takes place at cathode is kinetically sluggish and needs catalysts to overcome the thermodynamic limitations by increasing the rate of catalytic ORR. So far, platinum Pt-based catalysts have been proven the best electrocatalyst, however, they suffer with high cost, poor stability, and limited reserves in the Earth’s crust, restricting their use for commercial purpose. In this context, the search for metal-free carbon nanomaterials have emerged as an alternative to the counterpart Pt-based catalysts, especially owing to excellent electrical conductivity, large surface area, good stability, and low cost. This dissertation compiles the research work on heteroatom doped (single and co-doped) carbon catalysts for ORR electrocatalysis in alkaline medium. For the preparation of doped carbon nanomaterials, the conductive polymers, for example polyaniline (PANI), poly (3,4-ethylenedioxythiophene) (PEDOT), and polythiophene (PTH) were chosen as the precursors and sequentially polymerized by oxidative polymerization method onto silicon dioxide (SiO2) and silicon nitride (Si3N4) nanospheres followed by carbonization process. The selection of conductive polymers to obtain doped carbon nanomaterials was based on the following reasons: low-cost monomers; presence of heteroatom in the monomer unit, and intrinsic conductivity. By selecting an appropriate synthetic route for the preparation of conductive polymers coated on the templates (SiO2 and Si3N4), we produced high surface area, abundant mesoporous, and intrinsically doped carbon nanomaterials with ORR activity in alkaline medium. |
publishDate |
2020 |
dc.date.accessioned.fl_str_mv |
2020-12-22T23:56:42Z |
dc.date.available.fl_str_mv |
2020-12-22T23:56:42Z |
dc.date.issued.fl_str_mv |
2020-12-02 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
HONORATO, Ana Maria Borges. Conductive polymers derived heteroatom doped carbon catalysts for oxygen reduction reaction. 2020. Tese (Doutorado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2020. Disponível em: https://repositorio.ufscar.br/handle/ufscar/13591. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufscar.br/handle/ufscar/13591 |
identifier_str_mv |
HONORATO, Ana Maria Borges. Conductive polymers derived heteroatom doped carbon catalysts for oxygen reduction reaction. 2020. Tese (Doutorado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2020. Disponível em: https://repositorio.ufscar.br/handle/ufscar/13591. |
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https://repositorio.ufscar.br/handle/ufscar/13591 |
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eng |
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eng |
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600 600 |
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Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ |
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openAccess |
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Universidade Federal de São Carlos Câmpus São Carlos |
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Universidade Federal de São Carlos Câmpus São Carlos |
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