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Electrochemical performance of the electrocatalysts: (a) cyclic voltammograms of Pt/CNT and (b) Pt/C in an acidic medium (0.5 M H2SO4), (c) relationship between the normalized EASA as a function of the cycle number in an acidic medium (at +0.75 V vs reversible hydrogen electrode (RHE)) and (d) Nyquist plots of the electrocatalysts.
