fig5

Figure 5. (A) Schematic illustration for the synthesis of LVCR, LNCR and HVCR; (B) SEM and (C) TEM images of LVCR; (D) GCD curves of LVCR with selected points assigned to different charge/discharge states; 2D contour images of (E) F 1s Zn 2p and (F) Zn 2p; and (G) high-resolution XPS spectra of C 1s. Reproduced with permission from Ref.^[80]. Copyright 2024, Wiley. SEM: Scanning electron microscopy; TEM: transmission electron microscopy; GCD: galvanostatic charge-discharge; 2D: two-dimensional; LVCR: hierarchical micro-, meso-and macropores; LNCR: carbon materials lacking mesopores; HVCR: carbon materials macropores.