Fig. 3: HOR and MEA evaluations of RhMo NSs.
From: Atomic-thick metastable phase RhMo nanosheets for hydrogen oxidation catalysis
a HOR polarization curves of RhMo NSs/C, Rh/C, and Pt/C in 0.1 M KOH with a scan rate of 5 mV s−1 at a rotation speed of 1600 rpm. b HOR polarization curves of RhMo NSs/C with different rotation speeds. c Tafel slopes of RhMo NSs/C, Rh/C, and Pt/C. d Mass and specific activities of RhMo NSs/C, Rh/C, and Pt/C. e Comparison of the mass activity of RhMo NSs/C and previously reported electrocatalysts at an overpotential of 50 mV in 0.1 M KOH. f Polarization curves and peak power density curves of HEMFCs with RhMo NSs NSs/C (0.2 mgRh cm−2) or commercial Pt/C (0.2 mgPt cm−2) in anode and commercial Pt/C (0.2 mgPt cm−2) in cathode under H2/O2 and H2/air (CO2-free). g The PPDmax of RhMo NSs/C-based and commercial Pt/C-based MEA under H2–O2 and H2/air (CO2-free) media. h H2-air/(CO2-free) HEMFC stability test at the current density of 500 mA cm−2 with RhMo NSs/C (0.2 mgRh cm−2) in anode and commercial Pt/C (0.2 mgPt cm−2, 60 wt% Pt/C) in cathode.
