Fig. 2: Structure characterizations of PtCo@CoNC/NTG.
From: An integrated platinum-nanocarbon electrocatalyst for efficient oxygen reduction

a, b SEM images, c HAADF-STEM image, d TEM image, e HRTEM image, f AC-HAADF-STEM image, g EDS mapping, h XRD pattern, i Raman spectrum, and j N2 sorption curves of PtCo@CoNC/NTG, inset j is pore size distribution. The scale bars in a, b, c, d, e and f are 2 μm, 200 nm, 100 nm, 50 nm, 2 nm and 5 nm, respectively.