Ionic liquids (ILs) were actively used in electrochemical devices including thin-film transistors and energy storage devices owing to the high capacitance of the electrical double layers at the electrolyte/electrode interfaces. Numerous studies have been conducted using IL electrolytes and porous carbon electrodes for superior charge accumulation because of their better electrochemical stability than other electrolytes including aqueous and organic electrolytes. In this study, we employed different IL electrolytes and 3D ordered and interconnected large mesoporous/macroporous carbons for facilitating charge storage via effective electrical double layer formation. The resulting devices successfully operated over a wide potential window range of 0 ~ 4 V and showed an excellent long-term stability of over 5000 cycles at 2A/g.