The apparent corrosion current of pure iron in aerated 5 mM HClO₄ + 0.1 M NaClO₄ solution was separated into Fe oxidation, proton reduction and oxygen reduction currents using SECM in a modified tip generation/substrate collection (TG/SC) mode. The oxidation current density of Fe was 1.11 × 10⁻³ A/cm², equal to the sum of proton reduction and oxygen reduction current density, around 5.26 × 10⁻⁴ and 5.84 × 10⁻⁴ A/cm², respectively, implying that oxygen reduction and proton reduction are equally important at open circuit potential (OCP). Moreover, oxygen reduction was suppressed on the Fe electrode in the potential range between −0.7 and −1.1 V vs Ag/AgCl because of the inhibitory effect of the proton reduction reaction and a potential-dependent surface effect, then the suppression is weakened and oxygen reduction is enhanced. Finally, the Fe corrosion current was dominated by oxygen reduction and Fe oxidation at potentials more positive than −0.6 V.

使用SECM以改进的吸头生成/底物收集（TG / SC）模式将纯铁在5 mM HClO ₄  + 0.1 M NaClO ₄充气溶液中的表观腐蚀电流分为Fe氧化电流，质子还原电流和氧还原电流。Fe的氧化电流密度为1.11×10 ^-3  A / cm ²，等于质子还原和氧还原电流密度的总和，约为5.26×10 ^-4和5.84×10 ^-4  A / cm ^2。分别表示在开路电势（OCP）时，氧的还原和质子的还原是同等重要的。此外，由于质子还原反应的抑制作用和电位依赖性表面效应，Fe电极上的氧还原在相对于Ag / AgCl的-0.7V至-1.1V的电位范围内被抑制，因此抑制减弱并且氧减少量增加。最终，Fe腐蚀电流主要由氧还原和Fe氧化（电势大于-0.6 V的正电位）决定。