One-Step Synthesized Pt-on-NiCo Nanostructures for Oxygen Reduction with High Activity and Long-Term Stability

Figure 2

(a) XPS spectrum for Pt₅₃-on-NiCo nanostructures; detailed spectra for (b) Pt 4f, (c) Co 2p, and (d) Ni 2p in the Pt₅₃-on-NiCo nanostructures. The horizontal axe represents the binding energy corrected by that of C 1s.

(a)

(b)

(c)

(d)