Thus, we are hereby providing valuable evidence on the effect of lower potential limit (LPL) on metal dissolution by initially using the EFC-ICP-MS (3 cycles each LPL, 0.925-0.X VRHE; X=70/65/60, 5 mV s -1 , 0.1 M HClO4) and evaluating all five Pt-alloy electrocatalysts from this study. The experimental protocol consists of in total 9 slow cycles with a scan rate of 5 mV s -1 in the operational potential window with a constant upper potential limit (UPL) and a decreasing LPL for 50 mV every 3 cycles. Figure shows the effect of lowering the LPL from 0.7 to 0.65 V as well as from 0.65 to 0.6 VRHE on the dissolution of both Pt and Ni in the case of the d-Pt-Ni/C-JM benchmark. Interestingly, while we have kept the UPL constant, lowering of the LPL results in an increase of Ni dissolution. Furthermore, we have tested this effect for reproducibility (see SI, Figures and) as well as excluded the possibility of a 'memory-effect'. Thus, in addition to the reproducibility measurements, where the initial LPL is 0.7 VRHE (see SI, Figures and), we have performed two more measurements where the LPL of 0.6 VRHE was used right away (see SI, Figures and). This way, no prior metal transient dissolution and thus, degradation took place prior to the 3 cycles with LPL of 0.6 VRHE. By going directly to the lowest LPL of 0.6 V (see SI, Figures and), the observed Ni dissolution was indeed substantially higher than in the case with LPL of 0.7 VRHE (see SI, Figures and).