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Mo2CTx MXene supported nickel-iron alloy: an efficient and stable heterostructure to boost oxygen evolution reaction

hal.structure.identifierInstitut de chimie des milieux et matériaux de Poitiers [UMR 7285] [IC2MP [Poitiers]]
dc.contributor.authorLOUPIAS, Lola
hal.structure.identifierInstitut de chimie des milieux et matériaux de Poitiers [UMR 7285] [IC2MP [Poitiers]]
dc.contributor.authorBOULÉ, Roald
hal.structure.identifierInstitut de chimie des milieux et matériaux de Poitiers [UMR 7285] [IC2MP [Poitiers]]
dc.contributor.authorMORAIS, Cláudia
hal.structure.identifierPhysique et Propriétés des Nanostructures [Institut Pprime] [PPNa]
dc.contributor.authorMAUCHAMP, Vincent
hal.structure.identifierInstitut de chimie des milieux et matériaux de Poitiers [UMR 7285] [IC2MP [Poitiers]]
dc.contributor.authorGUIGNARD, Nadia
hal.structure.identifierInstitut de chimie des milieux et matériaux de Poitiers [UMR 7285] [IC2MP [Poitiers]]
dc.contributor.authorROUSSEAU, Julie
hal.structure.identifierPhysique et Propriétés des Nanostructures [Institut Pprime] [PPNa]
dc.contributor.authorPACAUD, Jérôme
hal.structure.identifierPhysique et Propriétés des Nanostructures [Institut Pprime] [PPNa]
dc.contributor.authorCHARTIER, Patrick
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGAUDON, Manuel
hal.structure.identifierInstitut de chimie des milieux et matériaux de Poitiers [UMR 7285] [IC2MP [Poitiers]]
dc.contributor.authorCOUTANCEAU, Christophe
hal.structure.identifierInstitut de chimie des milieux et matériaux de Poitiers [UMR 7285] [IC2MP [Poitiers]]
dc.contributor.authorCÉLÉRIER, Stéphane
hal.structure.identifierInstitut de chimie des milieux et matériaux de Poitiers [UMR 7285] [IC2MP [Poitiers]]
dc.contributor.authorHABRIOUX, Aurélien
dc.date.issued2023
dc.identifier.issn2053-1583
dc.description.abstractEnA polyol-assisted solvothermal route is used to synthesize Ni x Fe y nanoalloys supported on a highly electron conductive 2D transition metal Mo 2 CT x MXene. Structural, morphological and chemical characteristics of the materials are determined using several physicochemical techniques. The MXene support allows not only the formation of a nanostructured metallic Ni x Fe y nanoalloys, but also favors the interfacial charge transfer for the OER. The Ni x Fe y @Mo 2 CT x material with a Ni/Fe ratio of 2.66 leads to the outstanding activity for the OER with an amazingly low Tafel slope value of 34 mV dec-1 and a current density of 10 mA.cm-2 at a potential of only 1.50 V vs. RHE. In situ Raman experiments show that β-NiOOH formed by oxidation of the nanoalloys under positive scan, likely containing a very small amount of Fe, is the active phase for the OER. This material exhibits also an excellent stability over 168 h in a 5 M KOH electrolyte. TEM-EELS analyses after 100 voltammetric cycles between 0.2 to 2 1.55 V vs. RHE evidence for the first time that the MXene support is not fully oxidized in the first cycle. Also, oxyhydroxide layer formed in the OER potential region at the surface of the Ni x Fe y nanoparticles can be reversibly reduced.
dc.description.sponsorshipSynthèse et fonctionnalisation de nouveaux carbures de métaux de transition 2D (MXENE) : application pour l'électroCATalyse de l'oxygène - ANR-18-CE08-0014
dc.description.sponsorshipPoitiers Graduate School on physico-chemical properties of INTerfaces for AeRonautic, Energy and Environment
dc.language.isoen
dc.publisherIOP Publishing
dc.subject.enMXene
dc.subject.ennickel-iron alloy
dc.subject.enmolybdenum carbide
dc.subject.enoxygen evolution reaction
dc.subject.enpolyol synthesis route
dc.title.enMo2CTx MXene supported nickel-iron alloy: an efficient and stable heterostructure to boost oxygen evolution reaction
dc.typeArticle de revue
dc.identifier.doi10.1088/2053-1583/acbfcb
dc.subject.halChimie
dc.subject.halPhysique [physics]
bordeaux.journal2D Materials
bordeaux.page024005
bordeaux.volume10
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-04010894
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04010894v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=2D%20Materials&rft.date=2023&rft.volume=10&rft.issue=2&rft.spage=024005&rft.epage=024005&rft.eissn=2053-1583&rft.issn=2053-1583&rft.au=LOUPIAS,%20Lola&BOUL%C3%89,%20Roald&MORAIS,%20Cl%C3%A1udia&MAUCHAMP,%20Vincent&GUIGNARD,%20Nadia&rft.genre=article


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