Supercapacitor Based on Nanostructured Multilayer Films Consisting of Polyelectrolyte/Graphene Oxide-MnO2-ZnO for Energy Storage Applications

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorFederal University of Triângulo Mineiro (UFTM)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorOliveira, Danilo A.-
Autor(es): dc.creatorSilva, Ranilson A. da[UNESP]-
Autor(es): dc.creatorOrlandi, Marcelo O.-
Autor(es): dc.creatorSiqueira, José R.-
Data de aceite: dc.date.accessioned2025-08-21T20:55:47Z-
Data de disponibilização: dc.date.available2025-08-21T20:55:47Z-
Data de envio: dc.date.issued2023-03-01-
Data de envio: dc.date.issued2023-03-01-
Data de envio: dc.date.issued2021-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1002/pssa.202100871-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/239881-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/239881-
Descrição: dc.descriptionThe development of new technologies has increased the demand for energy storage devices with high performance. In this sense, supercapacitors appear as a prominent alternative due to their high power density, fast charge–discharge time, environment friendly, and long-term cycle stability. Carbon materials and transition metal oxides have been reported as attractive materials to achieve supercapacitors with enhanced properties. This study investigates nanostructured films, using the layer-by-layer (LbL) method, consisting of MnO2-ZnO nanostructures embedded into reduced graphene oxide (rGO) and combined with polyallylamine hydrochloride (PAH) polyelectrolyte for supercapacitor applications. The film morphology and the incorporation of MnO2-ZnO nanostructures in rGO layers are analyzed by scanning electron microscopy images. The electrochemical properties are evaluated by cyclic voltammetry and galvanostatic charge–discharge measurements. A high capacitance is reached for a 20-bilayer PAH/rGO-MnO2-ZnO LbL film at a 1 mV s−1 and 1.15 A g−1 with values of 1650 F g−1 and 26 mF cm−2. Furthermore, the film exhibits high energy and power densities of 112.3 Wh kg−1 and 404.4 W kg−1, respectively, as well as high capacitive retention and cycle stability. These findings indicate the potential application of PAH/rGO-MnO2-ZnO LbL films as supercapacitor electrodes and envisage further studies of LbL nanostructured systems for energy storage applications.-
Descrição: dc.descriptionLaboratory of Applied Nanomaterials and Nanostructures (LANNA) Institute of Exact Sciences Natural and Education Federal University of Triângulo Mineiro (UFTM), MG-
Descrição: dc.descriptionDepartment of Physical-Chemistry São Paulo State University (UNESP), SP-
Descrição: dc.descriptionDepartment of Physical-Chemistry São Paulo State University (UNESP), SP-
Idioma: dc.languageen-
Relação: dc.relationPhysica Status Solidi (A) Applications and Materials Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectenergy storage devices-
Palavras-chave: dc.subjectlayer-by-layer films-
Palavras-chave: dc.subjectMnO2-ZnO nanostructures-
Palavras-chave: dc.subjectreduced graphene oxide-
Palavras-chave: dc.subjectsupercapacitors-
Título: dc.titleSupercapacitor Based on Nanostructured Multilayer Films Consisting of Polyelectrolyte/Graphene Oxide-MnO2-ZnO for Energy Storage Applications-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.