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Performance of Nanostructured Ternary Metal Spinel Oxides as Efficient Electrocatalysts

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dc.contributor.advisorMorin, Sylvie
dc.contributor.authorIslam, Rehana
dc.date.accessioned2020-05-11T12:50:28Z
dc.date.available2020-05-11T12:50:28Z
dc.date.copyright2019-09
dc.date.issued2020-05-11
dc.date.updated2020-05-11T12:50:28Z
dc.degree.disciplineChemistry
dc.degree.levelMaster's
dc.degree.nameMSc - Master of Science
dc.description.abstractIn this work, various spinel oxides, namely Ni1-xCuxCo2O4 (0 x 0.75), Fey(Ni/Cu)x-y Co3-xO4 [(0.5 x 1), (0.1 y 0.15)] have been prepared on Fluorine coated Tin Oxide (FTO) glass by the thermal decomposition method. The films were characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDX), X-ray diffraction (XRD) analysis and cyclic voltammetry (CV), to link the surface morphology, stoichiometric composition, spinel phase information, and electrocatalytic activity. The SEM analysis shows that the prepared spinel oxide electrodes are uniformly distributed over the substrate and can be quite porous. The formation of a spinel structure was confirmed by XRD analysis for all our samples and their composition is, with a few exceptions, very close to the expected one. In our Ni1-xCuxCo2O4 (0 x 0.75) samples, an increase of lattice parameter with the increase of copper content was observed. The modification of cobalt-based electrodes to form FeyCux-yCo3-xO4 [(0.5 x 1), (0.1 y 0.15)] enhances their catalytic activity towards the oxygen evolution reaction in an alkaline media as confirmed by CV. The Fe0.1Cu0.9Co2O4 shows the highest current density of 0.45 mA/cm2 at 900 mV among all other electrodes studied. The correlation between composition, surface morphology, phase information, and electrocatalytic activity is discussed in this thesis. Finally, all ternary spinel oxide samples will be compared with those of binary spinel oxide prepared in the Morin group and other materials prepared in the literature.
dc.identifier.urihttps://hdl.handle.net/10315/37441
dc.languageen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectPhysical chemistry
dc.subject.keywordsNanostructured
dc.subject.keywordsTernary spinel oxide
dc.subject.keywordsElectrocatalyst
dc.subject.keywordsFluorine doped tin oxide
dc.subject.keywordsSaturated calomel electrode
dc.subject.keywordsNormal hydrogen electrode
dc.subject.keywordsSurface morphology
dc.subject.keywordsThermal decompositions
dc.subject.keywordsHydrogen fuel
dc.subject.keywordsWater electrolysis
dc.subject.keywordsMetal- air battery
dc.subject.keywordsSolar panels
dc.subject.keywordsCorrosion stability
dc.subject.keywordsTetrahedral sites
dc.subject.keywordsOctahedral sites
dc.subject.keywordsBifunctional catalysts
dc.subject.keywordsDivalent- trivalent cations
dc.subject.keywordsAnnealing temperature
dc.subject.keywordsScanned specimen
dc.subject.keywordsMagnifications
dc.subject.keywordsElastic and inelastic scattering
dc.subject.keywordsMiller indices
dc.subject.keywordsCrystallographic planes
dc.subject.keywordsScanning electron microscope
dc.subject.keywordsEnergy-dispersive X-ray spectroscopy
dc.subject.keywordsX-ray diffractions
dc.subject.keywordsCyclic voltammetry
dc.subject.keywordsCatalytic activities
dc.subject.keywordsOxygen evolution reactions
dc.subject.keywordsOnset and overpotentials
dc.subject.keywordsBinary and ternary spinel oxides
dc.subject.keywordsReproducibility
dc.subject.keywordsCapacitor
dc.subject.keywordsGeometrical surface area
dc.subject.keywordsReal surface area
dc.subject.keywordsCapacitance
dc.subject.keywordsDouble layer capacitance
dc.subject.keywordsElectrical conductivity
dc.subject.keywordsAnodic - cathodic potential
dc.subject.keywordsCapacitive current density
dc.subject.keywordsRoughness factors
dc.subject.keywordsResistivity
dc.subject.keywordsStoichiometric ratios
dc.subject.keywordsLinear regression
dc.subject.keywordsetc.
dc.titlePerformance of Nanostructured Ternary Metal Spinel Oxides as Efficient Electrocatalysts
dc.typeElectronic Thesis or Dissertation

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