A Platinum Monolayer Core-Shell Catalyst with a Ternary Alloy Nanoparticle Core and Enhanced Stability for the Oxygen Reduction Reaction

Figure 7

((a), (c)) Polarization curves of Pd₁Ir₁Ni₂@Pt/C and Ir₁Ni₂@Pt/C, obtained with a rotating disk electrode for the ORR in 0.1 M HClO₄ solution. ((b), (d)) Koutecky-Levich plots at different potentials using the data obtained from Pd₁Ir₁Ni₂@Pt/C and Ir₁Ni₂@Pt/C (Figures 7(a) and 7(c)).

(a)

(b)

(c)

(d)