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Kinetics and reversibility of oxide formation on graphene-covered Pt nanoparticles on FAD55 in 0.1 M H2SO4 electrolyte. (a) Development of the PEY signal at 531.8 eV during anodization as shown in panel b. (c) Pt 4f spectra (hν = 600 eV) at OCP (0.05 VRHE) prior to the voltage sweep shown in panel b, ∼2.5 min after reaching 1.85 V, and after returning to OCP.
