fig2

Figure 2. (A) Cross-sectional SEM images of S-ATrGO/CG and NS-ATrGO/CG; (B) Laser scanning confocal microscopy images of S-ATrGO/CG and NS-ATrGO/CG; (C) WAXS two-dimensional scattering maps of S-ATrGO/CG and NS-ATrGO/CG; (D) Corresponding one-dimensional integral curves; (E) TEM micrograph of S-ATGO/CG; (F) HRTEM micrographs of S-ATGO/CG. CG: Commercial graphene; ATGO: acid-treated graphene oxide; S-ATrGO: sulfuric acid-treated reduced graphene oxide; NS: non-slit; SEM: scanning electron microscopy; WAXS: wide-angle X-ray scattering; TEM: transmission electron microscopy; HRTEM: high-resolution TEM.