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Electrochemical polarization curves and MAs of activated electrocatalysts obtained by the RDE half-cell. ORR LSVs of (a) Mo-doped oh-PtNi, (b) MoRh-doped oh-PtNi, (c) Pt/C HiSPEC 3000, and the (d) corresponding MAs at 0.9 V vs RHE evaluated before and after the AST (30,000 cycles between 0.6 and 0.95 V vs RHE), calculated according to the Koutecký–Levich equation.
