Figure 2: Morphological characterization of NiFe-MOF electrodes.
From: Ultrathin metal-organic framework array for efficient electrocatalytic water splitting

(a) An optical image (size: 1 cm × 3 cm × 1 mm). (b,c) SEM images (scale bars are 300 μm for b and 1 μm for c). (d) Transmission electron microscopy image (Scale bar, 100 nm). (e) High-resolution transmission electron microscopy image (Scale bar, 5 nm) and selected area electron diffraction (SAED) pattern (scale bar, 10/1 nm). (f) AFM image and corresponding height profile along the marked green line.