Figure 4: Imbibition kinetics versus air.
(a) Imbibed mass, m, versus square-root of time, t, for experiments at the potentials indicated by the labels. Solid lines: experiment, dashed lines: linear fits of experimental data for t>25 s. (b) Solid–liquid interfacial tension change, ΔσSL, versus electrode potential, E. Dash-dotted line: the potential of zero charge, EZc=−0.10 V, solid line: EZc=−0.05 V, dashed line: EZc=0 V. (c) Imbibition coefficient, C, normalized to the imbibition coefficient, C0, at the open-circuit potential, versus E. The dash-dotted, dashed and solid lines interpolating the data points are predictions of C/C0 based on the data of ΔσSL by setting EZc=−0.10, −0.05 and 0 V, respectively. Grey bar: the range of immersion potential.
