fig1

Figure 1. (A) Schematic illustration for the synthesis of C/CoFe-MXene. SEM images of (B) CoFePBA-MXene and (c) C/CoFe-MXene; Inset in (C) is the magnified image; (D) TEM image; (E) HRTEM image; (F) HAADF-STEM image and (G) corresponding EELS elemental mappings of C/CoFe-MXene. SEM: Scanning electron microscopy; TEM: transmission electron microscopy; HAADF-STEM: high-angle annular dark field scanning transmission electron microscopy; HRTEM: high resolution transmission electron microscopy; EELS: electron energy-loss spectroscopy.