2023
Multielectrode electrochemical cell for in situ structural characterization of amorphous thin‐film catalysts using high‐energy X‐ray scattering
Kwon G, Kisslinger K, Hwang S, Wright G, Layne B, Zhong H, Pattammattel A, Lynch J, Kim J, Hu G, Brudvig G, Lee W, Nam C. Multielectrode electrochemical cell for in situ structural characterization of amorphous thin‐film catalysts using high‐energy X‐ray scattering. Journal Of Applied Crystallography 2023, 56: 1392-1402. DOI: 10.1107/s1600576723006933.Peer-Reviewed Original ResearchThin film catalystElectrochemical cellGlassy carbonHigh-energy X-ray scatteringStructural characterizationX-ray scatteringWater oxidation catalystsPorous electrode architectureThree-electrode configurationHigh-energy x-ray scattering techniquesSitu structural characterizationPDF analysisIridium oxide filmsMetal oxide layerPair distribution function techniqueElectrode architectureOxidation catalystX-ray Scattering MeasurementsX-ray scattering techniquesReaction conditionsCatalystElectrochemical potentialAtomic pair distribution function (PDF) techniqueElectrodeDeposition technique
2021
Experimental Verification of Ir 5d Orbital States and Atomic Structures in Highly Active Amorphous Iridium Oxide Catalysts
Kwon G, Chang S, Heo J, Lee K, Kim J, Cho B, Koo T, Kim B, Kim C, Lee J, Bak S, Beyer K, Zhong H, Koch R, Hwang S, Utschig L, Huang X, Hu G, Brudvig G, Tiede D, Kim J. Experimental Verification of Ir 5d Orbital States and Atomic Structures in Highly Active Amorphous Iridium Oxide Catalysts. ACS Catalysis 2021, 11: 10084-10094. DOI: 10.1021/acscatal.1c00818.Peer-Reviewed Original ResearchResonant inelastic x-ray scatteringOxygen evolution reactionIridium oxide catalystsAtomic structureOrbital statesOxide catalystsInelastic x-ray scatteringEV energy lossIr L3 edgeHigh-energy excitationsDensity functional theory calculationsRefined atomic structureCharge transfer kineticsDistribution function measurementsPDF measurementsFunctional theory calculationsDirect experimental verificationRIXS profileInterband transitionsOrbital excitationsCatalytic reactivityL3 edgePair distribution function measurementsIrOx filmsX-ray scattering