▎ 摘　　要

Ionic liquid (IL)-induced three-dimensional macroassembly of graphene (GN) has been achieved through one-step hydrothermal treatment. Significantly, the three-dimensional GN-IL (TGN-IL) nanostructures provide ideal electrode materials for supercapacitors because they combine the unique properties of GN and IL in overcoming the restacking of GN, enlarging the specific surface area, improving the GN conductivity and ensuring the high electrochemical utilization of GN as well as the open channels provided by 3D nanostructures.