Figure 2
From: Plasma-induced, nitrogen-doped graphene-based aerogels for high-performance supercapacitors
SEM images of RGO/Fe3O4 and NG/Fe3O4: (a) photograph of hydrothermal 3D RGO/Fe3O4; (b, c) SEM images of 3D RGO/Fe3O4 prepared by the hydrothermal process; (d– f) SEM images of 3D NG/Fe3O4 with different magnifications. (g) TEM images of NG/Fe3O4. (h) XRD picture of the as-prepared Fe3O4, NG/Fe3O4 and RGO/Fe3O4. (i) FTIR spectra of GO, NG/Fe3O4 and RGO/Fe3O4.
