Fig. 8.
Fuel cell performance comparison of disordered and annealed Pt3Co/C before and after stability testing. BOL and EOL represent beginning-of-life (initial performance) and end-of-life (after 30,000 cycles), respectively. (A) MEA performance at Pt loadings of 0.025 and 0.10 mgPt/cm2 on anode and cathode, respectively. Cell operation conditions are in the order of anode/cathode: H2/air, 94 °C, 65/65%RH, 250/250 kPaabs,outlet, stoichiometries of 1.5/2. (B) MA measured at 0.9 V vs. RHE (Upper), ECSA of Pt measured by CO stripping in MEA (Middle), and voltage measured at a high current density of 2 A/cm2 (Lower). (C) Power density at 0.67 V under the same condition as A.