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

Figure 3

(a) XPS survey spectrum and corresponding high-resolution spectrum of (c) Pd 3d and (e) Ir 4f for Pd₁Ir₁Ni₂/C; (b) survey spectrum and corresponding high-resolution spectrum of (d) Pd 3d, (f) Ir 4f, and (g) Pt 4f for Pd₁Ir₁Ni₂@Pt/C; (h) Pt 4f in 20% JM-Pt/C.

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