As outlined earlier, the addition of Ti into MnOx triggers an improvement in activity after ASTs, a recurring behavior observed across the entire optimization campaign. To investigate this particular behavior in more detail, the Mn70Ti30Ox composition, which showed this phenomenon the strongest within the Pareto compositions, was subjected to a more extensive electrochemical testing (see Figure ). The objective was to conduct a Tafel analysis before and after the same AST applied during the MOBO-guided screening. The Tafel analysis was performed by recording the ηOER at chronopotentiometric (CP) holds of 0.1, 0.2, 0.5, 1, 2, and 5 mA cm -2 . A Mn90Co10Ox sample was also subjected to this testing to probe the behavior of a candidate at the opposite spectrum on the Pareto front (see Figure ). As observed before, the overall activity is lower than a Mn90Co10Ox sample. The ηOER of both mixed metal oxides become similar as the current density approaches 5 mA cm -2 , reasoned by the fact that Mn is the main constituent performing OER and both being Mn-rich.