Origin of Asymmetric Electric Double Layers at Electrified Oxide/Electrolyte Interfaces
Mei Jia, Chao Zhang, Jun Cheng
Abstract
. We also find that the dissociative water adsorption prefers the inner sphere binding of counterions, which in turn leads to a higher Helmholtz capacitance, compared with that of the nondissociative case at the interface. This work provides a molecular interpretation of asymmetric EDLs seen experimentally in a range of metal oxides/hydroxides.
Topics & Concepts
Differential capacitanceHelmholtz free energyElectrolyteChemical physicsCapacitanceOxideElectric fieldChemistryMoleculeCounterionDipoleMolecular dynamicsDensity functional theoryAdsorptionIonComputational chemistryPhysicsPhysical chemistryThermodynamicsElectrodeQuantum mechanicsOrganic chemistryElectrochemical Analysis and ApplicationsElectronic and Structural Properties of OxidesCopper-based nanomaterials and applications