fig7

Figure 7. (A) Schematic of N-OPCNF synthesis; (B) SEM image and (C) TEM image; (D) The results of theoretical calculations for the Zn adsorption; (E) Schematic diagram of the assembly of ZHSC; (F) CV profiles; (G) Capacitance retention and coulombic efficiency. Reproduced with permission from Ref.^[104]. Copyright 2024, Springer. N-OPCNF: Nanosheets onto a arbon nanofiber framework; SEM: Scanning electron microscopy; TEM: transmission electron microscopy; ZHSC: Zinc-ion hybrid supercapacitor; CV: cyclic voltammetry.