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Electrodeposited manganese oxide on tailored 3D bimetallic nanofoams for energy storage applications

2019-04Journal article Restricted access
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dc.contributor.authorSiwek, Katarzyna
dc.contributor.authorEugénio, Sónia
dc.contributor.authorMoura E Silva, Teresa
dc.contributor.authorM.F. Montemor
dc.date.accessioned2019-07-29T08:33:31Z
dc.date.available2019-07-29T08:33:31Z
dc.date.issued2019-04
dc.description.abstractThree-dimensional (3D) electrode design has great advantages over its two-dimensional (2D) counterparts, including higher mass loading of active material, enhanced ion diffusion, and electron charge transfer. Commercial 3D porous structures (i.e., Ni foams) do not fit the purpose of the ideal 3D electrode for supercapacitors, in which surface area (per cm(2)) is more important than large pore volume. These characteristics, however, can be tuned by the dynamic hydrogen bubble template (DHBT) electrodeposition, a route that is used to tailor 3D nanostructured (multi-) metallic porous surfaces. In addition to the higher surface area and tailored porosity, these 3D nanostructures can be subsequently functionalized with different species such as metal oxides or other compounds. Therefore, a facile two-step electrochemical fabrication of 3D composite electrode composed of a bimetallic foam functionalized with manganese (Mn) oxide is proposed. The effect of applied current densities on the distribution and structure of Mn oxide (MnOx) electrodeposited over the bare foam is discussed. The results demonstrate that this route paves the way to design high-surface-area architectures for charge storage electrodes with enhanced electrochemical performance (194Fg(-1) mg(-1) of electrodeposited MnOx at 0.5Ag(-1)) and high charge-discharge rate capabilities (91% capacitance retention at 20Ag(-1)) for supercapacitor applications.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSIWEK, Katarzyna Irena; [et al] – Electrodeposited manganese oxide on tailored 3D bimetallic nanofoams for energy storage applications. Energy Technology. ISSN 2194-4288. Vol. 7, N.º 5 (2019), pp. 1-25pt_PT
dc.identifier.doi10.1002/ente.201801139pt_PT
dc.identifier.issn2194-4288
dc.identifier.issn2194-4296
dc.identifier.urihttp://hdl.handle.net/10400.21/10378
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWileypt_PT
dc.relationUID/QUI/00100/2019 - FCTpt_PT
dc.relationM-ERA-NET/0004/2014 - FCTpt_PT
dc.relationSFRH/BD/123963/2016 - FCTpt_PT
dc.subject3D nickel-cobalt nanofoamspt_PT
dc.subjectElectrodepositionpt_PT
dc.subjectFunctional coatingspt_PT
dc.subjectManganese oxidept_PT
dc.subjectSupercapacitorspt_PT
dc.titleElectrodeposited manganese oxide on tailored 3D bimetallic nanofoams for energy storage applicationspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage25pt_PT
oaire.citation.issue5pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleEnergy Technologypt_PT
oaire.citation.volume7pt_PT
person.familyNameSiwek
person.familyNameEugénio
person.familyNameMoura e Silva
person.familyNameMONTEMOR
person.givenNameKatarzyna
person.givenNameSónia
person.givenNameTeresa
person.givenNameFATIMA
person.identifier572597
person.identifier.ciencia-idFA1A-5A76-E226
person.identifier.ciencia-id2D17-B93D-44BC
person.identifier.ciencia-id3C16-79AA-7E94
person.identifier.orcid0000-0002-1070-965X
person.identifier.orcid0000-0002-1386-5236
person.identifier.orcid0000-0001-8402-6600
person.identifier.orcid0000-0001-7835-6814
person.identifier.ridB-2254-2013
person.identifier.ridF-8778-2014
person.identifier.scopus-author-id12798023400
person.identifier.scopus-author-id6506601258
person.identifier.scopus-author-id7004347821
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication76e06731-118d-453c-a8b8-77aa123dd63f
relation.isAuthorOfPublication7ae020d6-1efe-4f9f-86ef-aed080b952ef
relation.isAuthorOfPublicationfe43fd19-4bc4-4486-a11f-534f08bc1212
relation.isAuthorOfPublication221aa2b5-1f6f-44c6-ae85-f227362e800b
relation.isAuthorOfPublication.latestForDiscovery76e06731-118d-453c-a8b8-77aa123dd63f

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