Fig. 1: Material preparation and physiochemical properties characterization.
From: Cation desolvation-induced capacitance enhancement in reduced graphene oxide (rGO)
a Experimental procedures of the step reduction of graphene oxide (GO): reduced graphene oxide (rGO) was obtained by first hydrothermal reduction and followed by high-temperature thermal reduction to prepare further reduced material (marked as r2GO). b X-ray diffraction (XRD) patterns of rGO and r2GO powder. The 2θ angle corresponding to the 002 crystal plane XRD peaks of GO is shifted from 24.0° (d-spacing 3.7 Å) to 26.2° (d-spacing 3.4 Å) after reduction. c Zeta potential of rGO in the presence of aqueous 0.01 M LiCl, MgCl2 and ZnCl2 solutions.
