Nickel-Doped Sodium Cobaltite 2D Nanomaterials: Synthesis and Electrocatalytic Properties

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dc.contributor.authorRuiz González, María Luisa
dc.contributor.authorGonell, Francisco
dc.contributor.authorLaberty-Robert, Christel
dc.contributor.authorParras Vázquez, Marina Marta
dc.contributor.authorSanchez, Clément
dc.contributor.authorPortehault, David
dc.contributor.authorGonzález Calbet, José María
dc.contributor.authorAzor Lafarga, Alberto Eduardo
dc.date.accessioned2024-01-10T16:14:53Z
dc.date.available2024-01-10T16:14:53Z
dc.date.issued2018
dc.description.abstractABSTRACT: In this work we report a synthetic pathway to two-dimensional nanostructures of high oxidation state lamellar cobalt oxides with thicknesses of only few atom layers, through the combined use of precipitation in basic water at room temperature and gentle solid state topotactic transformation at 120 °C. The 2D nanomaterials are characterized by X-ray diffraction, nitrogen porosimetry, scanning electron microscopy, transmission electron microscopy and especially scanning transmission electron microscopy coupled to energy dispersive X-ray analysis and electron energy loss spectroscopy to assess the composition of the nanosheets and the oxidation state of the transition metal species. We show that the nanosheets preserve high oxidation states Co3+ and Co4+ of high interest for electrocatalysis of the oxygen evolution reaction (OER). By combining high Co oxidation state, surface-to-volume ratio and optimized nickel substitution, the 2D nanomaterials produced in a simple way exhibit high OER electrocatalytic activity and stability in alkaline aqueous electrolyte comparable to standard materials obtained in harsh thermal conditions.
dc.description.departmentDepto. de Química Inorgánica
dc.description.facultyFac. de Ciencias Químicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Ciencia e Innovación (España)
dc.description.sponsorshipMinisterio de Economía y Competitividad (España)
dc.description.statuspub
dc.identifier.citationAzor, A.; Ruiz-Gonzalez, M.; Gonell, F.; Laberty-Robert, C.; Parras, M.; Sanchez, C.; Portehault, D.; González-Calbet, J. M. Nickel-Doped Sodium Cobaltite 2D Nanomaterials: Synthesis and Electrocatalytic Properties. Chem. Mater. 2018, 30, 4986-4994 DOI:10.1021/acs.chemmater.8b01146.
dc.identifier.doi10.1021/acs.chemmater.8b01146
dc.identifier.essn1520-5002
dc.identifier.issn0897-4756
dc.identifier.officialurlhttps://doi.org/10.1021/acs.chemmater.8b01146
dc.identifier.urihttps://hdl.handle.net/20.500.14352/92326
dc.issue.number15
dc.journal.titleChemistry of Materials
dc.language.isoeng
dc.page.final4994
dc.page.initial4986
dc.publisherAmerican Chemical Society
dc.relation.projectIDResearch Projects CSD2009-00013, TSI-020100-2011-280, MAT2014-52405- C02-01, and MAT2017-82252-R.
dc.rights.accessRightsrestricted access
dc.subject.cdu546
dc.subject.ucmQuímica inorgánica (Química)
dc.subject.unesco23 Química
dc.titleNickel-Doped Sodium Cobaltite 2D Nanomaterials: Synthesis and Electrocatalytic Properties
dc.typejournal article
dc.type.hasVersionVoR
dc.volume.number30
dspace.entity.typePublication
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relation.isAuthorOfPublication7c94c914-addb-4c24-8528-e4342479a891
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relation.isAuthorOfPublication.latestForDiscovery0875dcf5-761f-4cbe-a35a-109b3a59efda
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