SÍNTESE DE NANOFIOS DE MnCo E APLICAÇÃO EM SUPERCAPACITORES.
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFMA |
Texto Completo: | https://tedebc.ufma.br/jspui/handle/tede/tede/3456 |
Resumo: | The use of supercapacitors has been widely studied as a highly advantageous device for storing energy, and this principle of energy storage is based on electrochemical reactions, and this device could be a future replacement for batteries as we know them today. For greater efficiency, nanostructured catalysts, such as nanosheets, nanoflakes and nanowires, gained prominence due to a greater surface area and availability of short electron and ion transport pathways, ensuring an increase in the performance of these devices. This work promoted the synthesis of a mixed oxide of MnCo in the form of nanowires prepared with a hydrothermal approach in which the precursors containing the metals of interest were mixed with an oxidizer in heated deionized water. Through the MEV and XPS analysis it was possible to prove the state of nanowires for the material as well as its elements containing the metals oxygen and carbon. Voltammetric experiments showed oxidation peaks related to Cobalt and Manganese oxides. The charge and discharge test demonstrates an extremely high specific capacitance reaching 3204 F∙g-1 at 1 A g-1 . The almost absence of a semicircle in the high frequency region, shown in the electrochemical impedance measurements, may indicate a material with little resistance to energy transfer, which gives the nanowires a high conductivity. By mounting a hybrid supercapacitor with active carbon as the negative side, a very efficient device is obtained, obtaining energy density and power density values at 1 A g-1 . of 48.08 Wh∙kg-1 and 2336.4 W∙kg-1 respectively. |
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LIMA, Roberto Batista dehttp://lattes.cnpq.br/4982744838486744LIMA, Roberto Batista dehttp://lattes.cnpq.br/4982744838486744VARELA JÚNIOR, Jaldyr de Jesus Gomeshttp://lattes.cnpq.br/5125904184711352COLMATI JÚNIOR, Fláviohttp://lattes.cnpq.br/0231242349462585http://lattes.cnpq.br/9267330496029800FIGUEIREDO, Patrick Benedito Silva De2022-01-14T14:04:45Z2021-12-09FIGUEIREDO, Patrick Benedito Silva De. Síntese de nanofios de MnCo e aplicação em supercapacitores.. 2021. 71 f. Dissertação( Programa de Pós-Graduação em Química/CCET) - Universidade Federal do Maranhão, São Luís, 2021.https://tedebc.ufma.br/jspui/handle/tede/tede/3456The use of supercapacitors has been widely studied as a highly advantageous device for storing energy, and this principle of energy storage is based on electrochemical reactions, and this device could be a future replacement for batteries as we know them today. For greater efficiency, nanostructured catalysts, such as nanosheets, nanoflakes and nanowires, gained prominence due to a greater surface area and availability of short electron and ion transport pathways, ensuring an increase in the performance of these devices. This work promoted the synthesis of a mixed oxide of MnCo in the form of nanowires prepared with a hydrothermal approach in which the precursors containing the metals of interest were mixed with an oxidizer in heated deionized water. Through the MEV and XPS analysis it was possible to prove the state of nanowires for the material as well as its elements containing the metals oxygen and carbon. Voltammetric experiments showed oxidation peaks related to Cobalt and Manganese oxides. The charge and discharge test demonstrates an extremely high specific capacitance reaching 3204 F∙g-1 at 1 A g-1 . The almost absence of a semicircle in the high frequency region, shown in the electrochemical impedance measurements, may indicate a material with little resistance to energy transfer, which gives the nanowires a high conductivity. By mounting a hybrid supercapacitor with active carbon as the negative side, a very efficient device is obtained, obtaining energy density and power density values at 1 A g-1 . of 48.08 Wh∙kg-1 and 2336.4 W∙kg-1 respectively.O uso de supercapacitores tem sido amplamente estudado como um dispositivo altamente vantajoso para armazenar energia, sendo esse princípio de armazenamento energético ocorrendo com base em reações eletroquímicas, podendo esse dispositivo ser um substituinte no futuro de baterias como conhecemos hoje. Para uma maior eficiência, catalisadores nanoestruturados, como nanofolhas, nanoflocos e nanofios, ganharam destaque devido a uma maior área superficial e disponibilidade de vias curtas de transporte de elétrons e íons, garantindo um aumento no desempenho desses dispositivos. Este trabalho promoveu a síntese de um óxido misto de MnCo em forma de nanofios preparados com uma abordagem hidrotermal na qual os precursores contendo os metais de interesse foram misturados a um oxidante em água deionizada aquecida. Através das análises de MEV e XPS foi possível comprovar o estado de nanofios para o material tanto quanto seus elementos contento os metais oxigênio e carbono. Experimentos voltamétricos mostraram picos de oxidação referentes aos óxidos de Cobalto e Manganês. O teste de carga e descarga demonstra uma capacitância específica extremamente alta chegando a 3.204 F∙g -1 a 1 A g-1 . A quase ausência de semicírculo na região de altas frequências, mostrada nas medidas de impedância eletroquímica, pode indicar um material pouco resistivo na transferência de energia, o que confere aos nanofios uma alta condutividade. Ao montar-se um supercapacitor híbrido com o carvão ativo sendo o lado negativo, obtém-se um dispositivo muito eficiente obtendo valores de densidade de energia e densidade de potência a 1 A g-1 . de 48,08 Wh∙kg-1 e 2336,4 W∙kg-1 respectivamente.Submitted by Maria Aparecida (cidazen@gmail.com) on 2022-01-14T14:04:45Z No. of bitstreams: 1 Patrick Benedito.pdf: 22474975 bytes, checksum: c74e52111d4d71a1908c9cd702b3515f (MD5)Made available in DSpace on 2022-01-14T14:04:45Z (GMT). No. of bitstreams: 1 Patrick Benedito.pdf: 22474975 bytes, checksum: c74e52111d4d71a1908c9cd702b3515f (MD5) Previous issue date: 2021-12-09FAPEMAapplication/pdfporUniversidade Federal do MaranhãoPROGRAMA DE PÓS-GRADUAÇÃO EM QUÍMICA/CCETUFMABrasilDEPARTAMENTO DE QUÍMICA/CCETSupercapacitores;Nanofios;Manganês;Cobalto;Supercapacitor híbridoSupercapacitors;Nanowires;Manganese;Cobalt;Hybrid supercapacitorOperações Industriais e Equipamentos para Engenharia QuímicaSÍNTESE DE NANOFIOS DE MnCo E APLICAÇÃO EM SUPERCAPACITORES.SYNTHESIS OF MnCo NANOWIRES AND APPLICATION IN SUPERCAPACITORS.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFMAinstname:Universidade Federal do Maranhão (UFMA)instacron:UFMAORIGINALPatrick Benedito.pdfPatrick Benedito.pdfapplication/pdf22474975http://tedebc.ufma.br:8080/bitstream/tede/3456/2/Patrick+Benedito.pdfc74e52111d4d71a1908c9cd702b3515fMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-82255http://tedebc.ufma.br:8080/bitstream/tede/3456/1/license.txt97eeade1fce43278e63fe063657f8083MD51tede/34562022-01-14 11:04:45.703oai:tede2: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Biblioteca Digital de Teses e Dissertaçõeshttps://tedebc.ufma.br/jspui/PUBhttp://tedebc.ufma.br:8080/oai/requestrepositorio@ufma.br||repositorio@ufma.bropendoar:21312022-01-14T14:04:45Biblioteca Digital de Teses e Dissertações da UFMA - Universidade Federal do Maranhão (UFMA)false |
dc.title.por.fl_str_mv |
SÍNTESE DE NANOFIOS DE MnCo E APLICAÇÃO EM SUPERCAPACITORES. |
dc.title.alternative.eng.fl_str_mv |
SYNTHESIS OF MnCo NANOWIRES AND APPLICATION IN SUPERCAPACITORS. |
title |
SÍNTESE DE NANOFIOS DE MnCo E APLICAÇÃO EM SUPERCAPACITORES. |
spellingShingle |
SÍNTESE DE NANOFIOS DE MnCo E APLICAÇÃO EM SUPERCAPACITORES. FIGUEIREDO, Patrick Benedito Silva De Supercapacitores; Nanofios; Manganês; Cobalto; Supercapacitor híbrido Supercapacitors; Nanowires; Manganese; Cobalt; Hybrid supercapacitor Operações Industriais e Equipamentos para Engenharia Química |
title_short |
SÍNTESE DE NANOFIOS DE MnCo E APLICAÇÃO EM SUPERCAPACITORES. |
title_full |
SÍNTESE DE NANOFIOS DE MnCo E APLICAÇÃO EM SUPERCAPACITORES. |
title_fullStr |
SÍNTESE DE NANOFIOS DE MnCo E APLICAÇÃO EM SUPERCAPACITORES. |
title_full_unstemmed |
SÍNTESE DE NANOFIOS DE MnCo E APLICAÇÃO EM SUPERCAPACITORES. |
title_sort |
SÍNTESE DE NANOFIOS DE MnCo E APLICAÇÃO EM SUPERCAPACITORES. |
author |
FIGUEIREDO, Patrick Benedito Silva De |
author_facet |
FIGUEIREDO, Patrick Benedito Silva De |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
LIMA, Roberto Batista de |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/4982744838486744 |
dc.contributor.referee1.fl_str_mv |
LIMA, Roberto Batista de |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/4982744838486744 |
dc.contributor.referee2.fl_str_mv |
VARELA JÚNIOR, Jaldyr de Jesus Gomes |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/5125904184711352 |
dc.contributor.referee3.fl_str_mv |
COLMATI JÚNIOR, Flávio |
dc.contributor.referee3Lattes.fl_str_mv |
http://lattes.cnpq.br/0231242349462585 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/9267330496029800 |
dc.contributor.author.fl_str_mv |
FIGUEIREDO, Patrick Benedito Silva De |
contributor_str_mv |
LIMA, Roberto Batista de LIMA, Roberto Batista de VARELA JÚNIOR, Jaldyr de Jesus Gomes COLMATI JÚNIOR, Flávio |
dc.subject.por.fl_str_mv |
Supercapacitores; Nanofios; Manganês; Cobalto; Supercapacitor híbrido |
topic |
Supercapacitores; Nanofios; Manganês; Cobalto; Supercapacitor híbrido Supercapacitors; Nanowires; Manganese; Cobalt; Hybrid supercapacitor Operações Industriais e Equipamentos para Engenharia Química |
dc.subject.eng.fl_str_mv |
Supercapacitors; Nanowires; Manganese; Cobalt; Hybrid supercapacitor |
dc.subject.cnpq.fl_str_mv |
Operações Industriais e Equipamentos para Engenharia Química |
description |
The use of supercapacitors has been widely studied as a highly advantageous device for storing energy, and this principle of energy storage is based on electrochemical reactions, and this device could be a future replacement for batteries as we know them today. For greater efficiency, nanostructured catalysts, such as nanosheets, nanoflakes and nanowires, gained prominence due to a greater surface area and availability of short electron and ion transport pathways, ensuring an increase in the performance of these devices. This work promoted the synthesis of a mixed oxide of MnCo in the form of nanowires prepared with a hydrothermal approach in which the precursors containing the metals of interest were mixed with an oxidizer in heated deionized water. Through the MEV and XPS analysis it was possible to prove the state of nanowires for the material as well as its elements containing the metals oxygen and carbon. Voltammetric experiments showed oxidation peaks related to Cobalt and Manganese oxides. The charge and discharge test demonstrates an extremely high specific capacitance reaching 3204 F∙g-1 at 1 A g-1 . The almost absence of a semicircle in the high frequency region, shown in the electrochemical impedance measurements, may indicate a material with little resistance to energy transfer, which gives the nanowires a high conductivity. By mounting a hybrid supercapacitor with active carbon as the negative side, a very efficient device is obtained, obtaining energy density and power density values at 1 A g-1 . of 48.08 Wh∙kg-1 and 2336.4 W∙kg-1 respectively. |
publishDate |
2021 |
dc.date.issued.fl_str_mv |
2021-12-09 |
dc.date.accessioned.fl_str_mv |
2022-01-14T14:04:45Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
FIGUEIREDO, Patrick Benedito Silva De. Síntese de nanofios de MnCo e aplicação em supercapacitores.. 2021. 71 f. Dissertação( Programa de Pós-Graduação em Química/CCET) - Universidade Federal do Maranhão, São Luís, 2021. |
dc.identifier.uri.fl_str_mv |
https://tedebc.ufma.br/jspui/handle/tede/tede/3456 |
identifier_str_mv |
FIGUEIREDO, Patrick Benedito Silva De. Síntese de nanofios de MnCo e aplicação em supercapacitores.. 2021. 71 f. Dissertação( Programa de Pós-Graduação em Química/CCET) - Universidade Federal do Maranhão, São Luís, 2021. |
url |
https://tedebc.ufma.br/jspui/handle/tede/tede/3456 |
dc.language.iso.fl_str_mv |
por |
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por |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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Universidade Federal do Maranhão |
dc.publisher.program.fl_str_mv |
PROGRAMA DE PÓS-GRADUAÇÃO EM QUÍMICA/CCET |
dc.publisher.initials.fl_str_mv |
UFMA |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
DEPARTAMENTO DE QUÍMICA/CCET |
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Universidade Federal do Maranhão |
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