Fig. 4. CV recorded on a GC disk electrode (∅ = 5 mm) for DME containing 0.1 mol dm⁻³ of GaCl₃ and 0.2 mol dm⁻³ of [TBA][ClO₄] at a scan rate of 10 mV s⁻¹ at 26 °C (black line, left axis) with current response on platinum ring on which +1.0 V vs. Fc⁺/Fc was applied (red line, right axis). The RRDE was rotated at 1000 rpm. The ring current density data was smoothed by a Savitzky–Golay function with 50 point window size.