Green synthesis of ZnO nanostructured electrode for supercapacitor

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dc.contributor.authorGALEGO, EGUIBERTOpt_BR
dc.contributor.authorSERNA, MARILENE M.pt_BR
dc.contributor.authorTATEI, TATIANE Y.pt_BR
dc.contributor.authorLIMA, BRUNA R.pt_BR
dc.contributor.authorFARIA, RUBENS N.pt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoBRAZIL MRS MEETING, 16thpt_BR
dc.date.accessioned2020-05-27T17:25:41Z
dc.date.available2020-05-27T17:25:41Z
dc.date.eventoSeptember 10-14, 2017pt_BR
dc.description.abstractThe electrical double layer capacitor (EDLC), has been extensively investigated for its many applications in electric and electronic devices, due to high power density and long-life cycle. Zinc oxide (ZnO) is a promising candidate for the electrochemical supercapacitor electrode. ZnO is well known to be an active battery electrode material with a high energy density of about 650 Ag-1 [1], but it has the disadvantage of dendrites formation during consecutive cycling, which decreases life cycle. In this paper, we report a relatively straightforward, environmental friendly and low-cost method for preparing ZnO electrodes that consists in two steps. Starting with a ZnO seed layer onto a steel substrate employing the successive ionic layer adsorption and reaction (SILAR) method [2]. Subsequently, a chemical deposition bath was used for the nanostructured ZnO growth. A low temperature SILAR method was used in this study, replacing high temperature and vacuum methods, such as chemical vapor deposition or sputtering, to create an interface region between the conductive steel current collector and the nanostructured ZnO electrode. Scanning electronic microscopy has been employed in the characterization of the two-step produced nanostructured ZnO electrodes. The electrochemical performance of the nanocomposite electrodes has been investigated using cyclic voltammetry (10 to 50) mVs-1 and charge-discharge curves (1 to 20) mAcm-2 in aqueous KOH electrolyte at several concentrations. Cyclic voltammetry exhibited a broad redox peak indicative of typical reversible redox reaction of ZnO with the K+, responsible for the faradaic reactions in the supercapacitor. The enhanced electrochemical performance has been attributed to the synergistic effects of pseudo-capacitance behavior of the ZnO phase grown on the ZnO seeds and to the nanostructured features of the electrode.pt_BR
dc.event.siglaB-MRSpt_BR
dc.format.extent1348-1349pt_BR
dc.identifier.citationGALEGO, EGUIBERTO; SERNA, MARILENE M.; TATEI, TATIANE Y.; LIMA, BRUNA R.; FARIA, RUBENS N. Green synthesis of ZnO nanostructured electrode for supercapacitor. In: BRAZIL MRS MEETING, 16th, September 10-14, 2017, Gramado, RS. <b>Abstract...</b> São Carlos, SP: Aptor Software, 2017. p. 1348-1349. Disponível em: http://repositorio.ipen.br/handle/123456789/31199.
dc.identifier.orcidhttps://orcid.org/0000-0001-6053-3907
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/31199
dc.localSão Carlos, SPpt_BR
dc.local.eventoGramado, RSpt_BR
dc.publisherAptor Softwarept_BR
dc.rightsopenAccesspt_BR
dc.titleGreen synthesis of ZnO nanostructured electrode for supercapacitorpt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorTATIANE YUMI TATEI
ipen.autorBRUNA RODRIGUES DE LIMA
ipen.autorRUBENS NUNES DE FARIA JUNIOR
ipen.autorMARILENE MORELLI SERNA
ipen.autorEGUIBERTO GALEGO
ipen.codigoautor14377
ipen.codigoautor14383
ipen.codigoautor227
ipen.codigoautor252
ipen.codigoautor640
ipen.contributor.ipenauthorTATIANE YUMI TATEI
ipen.contributor.ipenauthorBRUNA RODRIGUES DE LIMA
ipen.contributor.ipenauthorRUBENS NUNES DE FARIA JUNIOR
ipen.contributor.ipenauthorMARILENE MORELLI SERNA
ipen.contributor.ipenauthorEGUIBERTO GALEGO
ipen.date.recebimento20-05
ipen.event.datapadronizada2017pt_BR
ipen.identifier.ipendoc26978pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
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relation.isAuthorOfPublication20cb7788-3957-4550-9e5c-cf7f5261eec4
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relation.isAuthorOfPublicationc65f9b94-7593-4e3c-a8f7-67dca24ed1ea
relation.isAuthorOfPublication.latestForDiscoveryc65f9b94-7593-4e3c-a8f7-67dca24ed1ea
sigepi.autor.atividadeFARIA, RUBENS N.:227:730:Npt_BR
sigepi.autor.atividadeLIMA, BRUNA R.:14383:-1:Npt_BR
sigepi.autor.atividadeTATEI, TATIANE Y.:14377:730:Npt_BR
sigepi.autor.atividadeSERNA, MARILENE M.:252:-1:Npt_BR
sigepi.autor.atividadeGALEGO, EGUIBERTO:640:-1:Spt_BR
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