Fig. 3: Morphology and characterization of nanomaterial matrices and their hybridization.
a–d Images of a direct ink writing conduced on GO1.0%/DDAB-IB inks, b printed woodpile scaffolds sustained in air, c graphene aerogels, and d ultralight graphene aerogels with a density of ∼6 mg cm−3. e OM image of layer-by-layer stacking woodpile structure. f–i Scanning electron microscope (SEM) cross-sectional images (f, g) and surface images (h, i) of filaments in the printed woodpile. j X-ray diffractometry spectra of annealed 3D GO aerogels and 3D GO composites that include rGO/CNT and rGO/PW and rGO/Sulfur. k Transmission electron microscope (TEM) image and SEM image of rGO/CNT. l SEM image of GO/Sulfur and element mapping of S and C, respectively. Scale bars, 10 mm (b), 500 μm (e, g), 10 μm (f, i), 50 μm (h), 500 nm (k), and 5 μm (l).
