fig15

Figure 15. Field photographs of (A) 3D-PG-1 and (B) 3D-PG-2; (C) The distribution of pore sizes in 3D-PG-1 and 3D-PG-2; (D) SEM images of 3D-PG-1 and (E) 3D-PG-2; HRTEM images of (F) 3D-PG-1 and (G) 3D-PG-2. Reproduced with permission from Ref.^[146]. Copyright 2022, Elsevier. (H) Schematic diagram of the preparation process of 3DG/CoSe2NWs; (I) SEM and (J) TEM images of CoSe2NWs; (K) CV curves of CoSe2NWs at different scan rates; (L) GCD curves of 3DG/CoSe2NWs at different current densities; (M) Cycling performance of the 3DG/CoSe2NWs//AC device at 5 A g^-1 for 10,000 cycles; Reproduced with permission from Ref.^[147]. Copyright 2023, American Chemical Society. 3D: Three-dimensional; PG: porous graphene; SEM: scanning electron microscopy; TEM: transmission electron microscopy; CV: cyclic voltammetry; GCD: galvanostatic charge-discharge; AC: activated carbon.