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

Table 1

Results of fitting the XPS spectra; values given in percentage of total intensity.

Sample	Concentration (%)
	Pd 3d	Ir 4f	Ni 2p	Pt 4f	C 1s	O 1s	F 1s
Pd1Ir1Ni2/C	1.92	1.8	2	—	82.02	12.25	—
Pd1Ir1Ni2@Pt/C	0.48	0.46	—	0.37	54.58	9.04	34.42