Fig. 2: Morphology and phase characterizations.
From: In situ tuning of platinum 5d valence states for four-electron oxygen reduction
a TEM image of Pt1-CuOx/Cu; inset is the corresponding size distribution; (b) HRTEM image of Pt1-CuOx/Cu; (c–e) AC-HAADF-STEM image (c) EDS elemental mapping (d) and line-scan analysis, scale bar: 2 nm (e), of Pt1-CuOx/Cu. f XRD results of Pt1-CuOx/Cu and the control samples.
