The influence of gamma radiation doses on rGO/Ni for energy storage applications

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dc.contributor.authorGARCIA, RAFAEL H.L.pt_BR
dc.contributor.authorCARNEIRO, FELIPE W.pt_BR
dc.contributor.authorJACOVONE, RAYNARA M.S.pt_BR
dc.contributor.authorSAKATA, SOLANGE K.pt_BR
dc.contributor.authorANGNES, LUCIOpt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoINTERNATIONAL CONFERENCE ON APPLICATIONS OF RADIATION SCIENCE AND TECHNOLOGY, 2ndpt_BR
dc.date.accessioned2023-02-16T14:01:29Z
dc.date.available2023-02-16T14:01:29Z
dc.date.eventoAugust 22-26, 2022pt_BR
dc.description.abstractMetallic nanoparticles (MN) have been the subject of intense research in the last decades because of their high catalytic activity, associated with its large surface-to-volume ratio. However, it is difficult to obtain pure active metal nanoparticles surfaces, since its contamination and aggregation frequently result in deactivation and loss of catalytic activities. MN immobilization can minimize these effects. Thermal, mechanical, and electrical properties of reduced graphene oxide (rGO) make this material an excellent candidate for MN support for batteries and supercapacitors. The production of metallic nanoparticles on rGO surface based on gamma radiation allows less formation of residual impurities, absence of reducing agents, uniform mass production, no aggregation and low costs. Herein, we demonstrated a green and efficient one-step, gamma radiation-based method for Ni/rGO production. Graphene oxide (GO) was prepared by modified Hummers method. Ni+2 and graphene oxide reduction were performed in water/isopropanol solution (1:1) under inert medium. Samples were irradiated in the Multipurpose Gamma Irradiation Facility at CETER/IPEN/CNEN-SP, a category IV gamma irradiator by the IAEA classification, in radiations doses of 20, 40, and 80 kGy, at 10 kGy/h. From X-ray diffraction, the correlation between radiation doses and crystallite size was evaluated. For supercapacitor studies, cyclic voltammetry was carried out in a screen printed carbon electrode (SPCE) in K₄[Fe(CN)₆]. The working electrode was modified with produced rGO-Ni 80 kGy, Pt wire was used as counter and Ag/AgCl as reference electrode. Experiments were performed in KOH 1.0 M. Results showed that produced Ni/rGO has good potential to be used in electrochemical devices such as supercapacitors or batteries.pt_BR
dc.event.siglaICARSTpt_BR
dc.identifier.citationGARCIA, RAFAEL H.L.; CARNEIRO, FELIPE W.; JACOVONE, RAYNARA M.S.; SAKATA, SOLANGE K.; ANGNES, LUCIO. The influence of gamma radiation doses on rGO/Ni for energy storage applications. In: INTERNATIONAL CONFERENCE ON APPLICATIONS OF RADIATION SCIENCE AND TECHNOLOGY, 2nd, August 22-26, 2022, Vienna, Austria. <b>Abstract...</b> Vienna, Austria: International Atomic Energy Agency (IAEA), 2022. Disponível em: http://repositorio.ipen.br/handle/123456789/33844.
dc.identifier.orcid0000-0001-6072-5853pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-6072-5853
dc.identifier.orcidhttps://orcid.org/0000-0002-3602-6857
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/33844
dc.localVienna, Austriapt_BR
dc.local.eventoVienna, Austriapt_BR
dc.publisherInternational Atomic Energy Agency (IAEA)pt_BR
dc.rightsopenAccesspt_BR
dc.subjectnanoparticles
dc.subjectgraphene
dc.subjectgamma radiation
dc.subjectradiation doses
dc.titleThe influence of gamma radiation doses on rGO/Ni for energy storage applicationspt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorRAYNARA MARIA SILVA JACOVONE
ipen.autorSOLANGE KAZUMI SAKATA
ipen.autorFELIPE WIMMER CARNEIRO
ipen.autorRAFAEL HENRIQUE LAZZARI GARCIA
ipen.codigoautor14300
ipen.codigoautor7038
ipen.codigoautor15255
ipen.codigoautor3498
ipen.contributor.ipenauthorRAYNARA MARIA SILVA JACOVONE
ipen.contributor.ipenauthorSOLANGE KAZUMI SAKATA
ipen.contributor.ipenauthorFELIPE WIMMER CARNEIRO
ipen.contributor.ipenauthorRAFAEL HENRIQUE LAZZARI GARCIA
ipen.date.recebimento23-02
ipen.event.datapadronizada2022pt_BR
ipen.identifier.ipendoc29478pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublicationda20f0e7-9926-4e06-ae80-ccbc18ec0806
relation.isAuthorOfPublicationfb62f288-104d-4352-aed0-a18e0da21a1b
relation.isAuthorOfPublication0b897ff7-c190-4e48-86ee-28c11f6ef5c5
relation.isAuthorOfPublicationf5874229-caf7-49a4-97aa-bae7e7be18e8
relation.isAuthorOfPublication.latestForDiscoveryf5874229-caf7-49a4-97aa-bae7e7be18e8
sigepi.autor.atividadeSAKATA, SOLANGE K.:7038:220:Npt_BR
sigepi.autor.atividadeJACOVONE, RAYNARA M.S.:14300:220:Npt_BR
sigepi.autor.atividadeCARNEIRO, FELIPE W.:15255:-1:Npt_BR
sigepi.autor.atividadeGARCIA, RAFAEL H.L.:3498:410:Spt_BR
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