Figure 5
From: Noble metal-free bifunctional oxygen evolution and oxygen reduction acidic media electro-catalysts
(a) Performance of single PEMFC full cell consisting of Cu1.5Mn1.5O4:10F as cathode electro-catalyst (total loading = 0.3 mg/cm2) and commercial 40% Pt/C (Alfa Aesar) as anode electro-catalyst (Pt loading of 0.2 mgPt/cm2) at 80 °C and 0.1 MPa with UHP-H2 (200 ml/min) and UHP-O2 (300 ml/min) as reactant gases, (b) The variation of current density vs time in the chronoamperometry test of Cu1.5Mn1.5O4:10F (total loading = 1 mg/cm2) and in-house synthesized IrO2 (total loading = 0.15 mg/cm2), performed in 0.5 M H2SO4 solution under a constant potential of ~1.55 V (vs RHE) at 40 °C for 24 h, (c) The iRΩ corrected polarization curve (initial and after 6000 cycles) of Cu1.5Mn1.5O4:10F (total loading = 50 μg/cm2) obtained after stability test in O2-saturated 0.5 M H2SO4 solution at 26 °C with rotation speed of 2500 rpm and scan rate of 5 mV/sec.
