Development of nanohybrids based on carbon nanotubes/p(edot-co-mpy) and p(edot-co-pymp) copolymers as electrode material for aqueous supercapacitors

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dc.creatorGlenda Ribeiro de Barros Silveira Lacerda
dc.creatorGarbas Anacleto dos Santos
dc.creatorMaria Luiza Miranda Rocco
dc.creatorRodrigo Lassarote Lavall
dc.creatorTulio Matencio
dc.creatorHállen Daniel Rezende Calado
dc.date.accessioned2023-08-11T14:47:20Z
dc.date.accessioned2025-09-09T01:07:03Z
dc.date.available2023-08-11T14:47:20Z
dc.date.issued2020
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.identifier.doihttps://doi.org/10.1016/j.electacta.2020.135637
dc.identifier.issn1873-3859
dc.identifier.urihttps://hdl.handle.net/1843/57738
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofElectrochimica Acta
dc.rightsAcesso Restrito
dc.subjectEletroquímica
dc.subjectPolímeros conjugados
dc.subjectNanotubos de carbono
dc.subjectMedidores de capacitância
dc.subjectSíntese
dc.subjectRaman, Espectroscopia de
dc.subjectTermogravimetria
dc.subjectVoltametria
dc.subjectMicroscopia eletrônica
dc.subjectEspectroscopia de infravermelho
dc.subject.otherNanohybrids
dc.subject.otherConjugated polymers
dc.subject.otherSupercapacitor
dc.subject.otherPseudocapacitance
dc.titleDevelopment of nanohybrids based on carbon nanotubes/p(edot-co-mpy) and p(edot-co-pymp) copolymers as electrode material for aqueous supercapacitors
dc.typeArtigo de periódico
local.citation.volume335
local.description.resumoWe present the synthesis of nanohybrids based on carbon nanotube with EDOT/Py derivatives copolymers, P(EDOT-co-MPy) and P(EDOT-co-PyMP). These hybrids were prepared with functionalized MWCNT via in-situ polymerization for aqueous supercapacitor applications. The chemical structure and morphology of the hybrids were compared with those of neat copolymers and MWCNTs using FTIR, Raman and XPS spectroscopies. The results provided evidence of a covalent attachment between the copolymer and nanotubes. The electrodes were used in symmetric supercapacitor cell configuration and their performance was evaluated using cyclic voltammetry (CV), galvanostatic charge/discharge tests and electrochemical impedance spectroscopy (EIS). The hybrids presented an improvement in the capacitance values compared to a pure capacitive system (MWCNT) and the neat copolymers. The rate capability of the cells was also improved as a result of an enhancement in charge transfer in the nanohybrids. The devices showed high performance with excellent cycling stability, compared to the poor cyclability of the conjugated polymers, even after 20,000 cycles.
local.identifier.orcidhttps://orcid.org/0000-0002-8460-489
local.identifier.orcidhttps://orcid.org/0000-0001-6357-0033
local.identifier.orcidhttps://orcid.org/0000-0002-2746-8565
local.identifier.orcidhttps://orcid.org/0000-0003-1975-1827
local.identifier.orcidhttps://orcid.org/0000-0002-5660-8125
local.identifier.orcidhttps://orcid.org/0000-0002-4215-8848
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0013468620300281

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