Figure 1: Schematic illustration of the HGFs as an ideal material for EC electrodes.
From: Holey graphene frameworks for highly efficient capacitive energy storage
(a,b) Initial solvated 3D macroporous structures of GFs (a) and HGFs (b). (c,d) Compressed films of the solvated GFs (c) and HGFs (d). (e,f) A closed-up view of GF (e) and HGF (f) films, with the arrows highlighting the ion transport pathway. The ions in GF film need to travel much longer distance to find the broken edge of graphene sheet to cross each layer of graphene sheet in the GF film, while the nanopores in holey graphene sheet of HGF can function as the ion transport shortcuts between neighbouring layers of graphene to greatly speed up the ion transport across the entire HGF film.
