Ion-Size Heterogeneity Controls Interfacial Electrostatic Response in Mixed Ionic Liquids
Ion-size heterogeneity provides a route to modifying the electrostatic response of ionic-liquid interfaces beyond ion size alone. Here, we use multistep chronoamperometry to measure differential capacitance and charging dynamics of [CnC1Im]+[NTf2]− (n = 3, 4, 6, 8) and their binary mixtures. The neat ionic liquids ex...