title: Electrical double-layer capacitance in room temperature ionic liquids: ion-size and specific adsorption effects.
abstract: The electrical double-layer structure and capacitance in room temperature ionic liquids at electrified interfaces were systematically studied with use of the self-consistent mean-field theory. The capacitance curve departs from symmetry with respect to the point of zero charge when unequal ion-size is implemented or when specific adsorption of ions is introduced. For the case of unequal ion-size, the shape of the capacitance curve is strongly determined by the size of the counterion and only weakly influenced by the co-ion size. When present, specifically adsorbed ions would change the capacitance within a limited range of applied potential from the point of zero charge, which itself varies with the strength of specific adsorption.
authors.affiliation: CSIRO Process Science and Engineering, Bayview Avenue, Clayton South, Victoria 3169, Australia.
authors.forename: Y
authors.initials: Y
authors.lastname: Lauw
authors.forename: M D
authors.initials: MD
authors.lastname: Horne
authors.forename: T
authors.initials: T
authors.lastname: Rodopoulos
authors.forename: A
authors.initials: A
authors.lastname: Nelson
authors.forename: F A M
authors.initials: FA
authors.lastname: Leermakers