Fig. 3
From: Single atom tungsten doped ultrathin α-Ni(OH)2 for enhanced electrocatalytic water oxidation
Electron microscope analysis of the w-Ni(OH)2 sample. a SEM image, scale bar: 100 nm. b TEM, the inset shows the corresponding electronic diffraction spectra, scale bar: 100 nm. c The HADDF result and the corresponding element mapping, scale bar: 100 nm. d, e HAADF-STEM image, the corresponding element contrast result in e can be found in Supplementary Fig. 9d, the scale bars are 0.5 and 1 nm for d and e, respectively
