where f (E) is a function of the electrode potential and ω the RDE rotation rate. More details are given in the supplementary material. Using this approach, the kinetic current can be obtained from a linear fit of j -1 vs. ω -1/2 , the y-axis intercept of which yields j -1 kin , which is equivalent to extrapolating the measured data to infinite rotation rates. This has to be done at each electrode potential to generate the kinetic current curve in the potential range of interest. It should be noted that Eq. ( ) remains valid also when the reverse reaction is negligible. We will therefore refer to it as the general KL correction in the following, to be distinguished from the simplified KL correction of Eq. ( ). However, in any case, the assumed reaction order of one must be confirmed and checked for self-consistency a posteriori.