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GDE half-cell measurements: electrochemical polarization curves and extracted Pt MAs of oh-Pt alloy electrocatalysts obtained in the GDE half-cell setup. ORR polarization curves of Mo-doped oh-PtNi, MoRh-doped oh-PtNi, and Pt/C HiSPEC 3000 (a) before the AST, (b) after the AST, and the (c) corresponding calculated after 5k, 15k, and 30k cycles at 0.75, 0.8, and 0.85 V vs RHE.
