A facile and green synthesis of a MoO2-Reduced graphene oxide aerogel for energy storage devices

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorIstituto Italiano di Tecnologia-
Autor(es): dc.contributorPolitecnico di Torino-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorSerrapede, Mara-
Autor(es): dc.creatorFontana, Marco-
Autor(es): dc.creatorGigot, Arnaud-
Autor(es): dc.creatorArmandi, Marco-
Autor(es): dc.creatorBiasotto, Glenda [UNESP]-
Autor(es): dc.creatorTresso, Elena-
Autor(es): dc.creatorRivolo, Paola-
Data de aceite: dc.date.accessioned2022-02-22T00:24:51Z-
Data de disponibilização: dc.date.available2022-02-22T00:24:51Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3390/ma13030594-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/198539-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/198539-
Descrição: dc.descriptionA simple, low cost, and green method of hydrothermal synthesis, based on the addition of l-ascorbic acid (L-AA) as a reducing agent, is presented in order to obtain reduced graphene oxide (rGO) and hybrid rGO-MoO2 aerogels for the fabrication of supercapacitors. The resulting high degree of chemical reduction of graphene oxide (GO), confirmed by X-Ray Photoelectron Spectroscopy (XPS) analysis, is shown to produce a better electrical double layer (EDL) capacitance, as shown by cyclic voltammetric (CV) measurements. Moreover, a good reduction yield of the carbonaceous 3D-scaffold seems to be achievable even when the precursor of molybdenum oxide is added to the pristine slurry in order to get the hybrid rGO-MoO2 compound. The pseudocapacitance contribution from the resulting embedded MoO2 microstructures, was then studied by means of CV and electrochemical impedance spectroscopy (EIS). The oxidation state of the molybdenum in the MoO2 particles embedded in the rGO aerogel was deeply studied by means of XPS analysis and valuable information on the electrochemical behavior, according to the involved redox reactions, was obtained. Finally, the increased stability of the aerogels prepared with L-AA, after charge-discharge cycling, was demonstrated and confirmed by means of Field Emission Scanning Electron Microscopy (FESEM) characterization.-
Descrição: dc.descriptionCenter for Sustainable Future Technologies Istituto Italiano di Tecnologia, Via Livorno 60-
Descrição: dc.descriptionDepartment of Applied Science and Technology Politecnico di Torino, C. so Duca degli Abruzzi 24-
Descrição: dc.descriptionInterdisciplinary Laboratory of Electrochemistry and Ceramics (LIEC) Institute of Chemistry São Paulo State University-UNESP-
Descrição: dc.descriptionInterdisciplinary Laboratory of Electrochemistry and Ceramics (LIEC) Institute of Chemistry São Paulo State University-UNESP-
Idioma: dc.languageen-
Relação: dc.relationMaterials-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAerogels-
Palavras-chave: dc.subjectElectrochemical impedance spectroscopy-
Palavras-chave: dc.subjectL-ascorbic acid-
Palavras-chave: dc.subjectMolybdenum oxide-
Palavras-chave: dc.subjectReduced graphene oxide-
Palavras-chave: dc.subjectSupercapacitors-
Título: dc.titleA facile and green synthesis of a MoO2-Reduced graphene oxide aerogel for energy storage devices-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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