Fig. 7From: Few-Layer Graphene Sheet-Passivated Porous Silicon Toward Excellent Electrochemical Double-Layer Supercapacitor Electrodea C-V curves of the hybrid porous PSi electrode before and after activation at 100 mV/s. b The variation in areal capacitance of hybrid porous PSi electrodes before and after activation with the identical scan rateBack to article page