Figure 1 A) Figure 1 B) Figure 1 C) wt% IL MSA 0.9 V / A mg-1 delta MSA 0.9 / A mg-1 MSA 0.95 V / A mg-1 delta MSA 0.95 / A mg-1 wt% IL Pot 5 mA cm-2 / V vs. RHE delta Pot 5 mA cm-2 / V vs. RHE Pot 50 mA cm-2 / V vs. RHE delta Pot 50 mA cm-2 / V vs. RHE Pot 1500 mA cm-2 / V vs. RHE delta Pot 1500 mA cm-2 / V vs. RHE Pt/C j / mA cm-2 Pt/C Pot / V vs. RHE Pt/C-IL j / mA cm-2 Pt/C-IL Pot / V vs. RHE 0 0.28702 0.02632 6.69E-02 4.50E-03 0 0.89191 0.00169 0.82975 0.00122 0.67796 0.01182 0.42034 0.90787 0.64577 0.9119 5 0.43895 0.025 0.09973 1.15E-02 5 0.89678 8.24E-05 0.83548 9.20E-04 0.6538 0.00265 15.501 0.86176 16.263 0.86384 15 0.46802 0.03039 0.13073 0.00646 15 0.89968 2.53E-04 0.84009 0.00124 0.65677 0.01118 37.779 0.81621 51.398 0.81491 20 5.42E-01 0.01491 0.10879 0.0112 20 0.89974 0.00129 0.83818 9.58E-04 0.62128 0.00772 129.74 0.77354 172.13 0.77183 319.91 0.73565 369.18 0.73269 525.85 0.70092 675.47 0.69678 780.35 0.66931 989.83 0.66076 1082.3 0.64073 1282 0.62448 1411.6 0.61381 1528.4 0.58609 1743.7 0.58944 1737.3 0.54679 2052.4 0.56583 1908 0.50552 2326.1 0.54192 2061.2 0.46512 2184.2 0.42356