Fig. 3: Electrochemical evaluation of PNAC-o-Pt3Fe/C, o-Pt3Fe/C and commercial Pt/C for ORR. | Nature Communications

Fig. 3: Electrochemical evaluation of PNAC-o-Pt3Fe/C, o-Pt3Fe/C and commercial Pt/C for ORR.

From: Sandwiching intermetallic Pt3Fe and ionomer with porous N-doped carbon layers for oxygen reduction reaction

Fig. 3

a iR-corrected (95%, R was 30 ± 2 Ω) ORR polarization curves of various electrocatalysts; X-axis abbreviation E represents the potential, Y-axis abbreviation j represents the current density. b Histograms showing mass and specific activities at 0.9 V vs. RHE; error bars represent the standard deviation obtained from two separate experiments. c Tafel slopes of various electrocatalysts; X-axis abbreviation jk represents the kinetic current density, Y-axis abbreviation E represents the potential. d Activity decay after ADT cycling of above-mentioned Pt-based catalysts; error bars represent the standard deviation obtained from two separate experiments. Electrochemical evaluations were conducted under ambient conditions in a 0.1 M HClO4 solution with a pH value of 1.0 ± 0.1. The Pt loading was maintained at 10 μg cm−2, the scan rate was 20 mV s−1, the rotation rate was constant at 1600 rpm, and the gas flow was sustained at 0.1 L min−1. Source data for (a–d) were provided as a Source Data file.

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