Figure 5From: Facile synthesis and strongly microstructure-dependent electrochemical properties of graphene/manganese dioxide composites for supercapacitorsGalvanostatic charge/discharge curves of the supercapacitors based on graphene/MnO 2 composite electrodes with different microwave reaction times. (a) 5 min, (b) 10 min, and (c) 15 min. For each sample, the curves were measured at charging current of 2 and 3 mA, respectively.Back to article page