Figure 1
From: All-graphene-battery: bridging the gap between supercapacitors and lithium ion batteries
Structural and morphological characterization of the functionalized graphene cathode and the reduced graphene oxide anode.
(a). XRD patterns of the functionalized graphene and reduced graphene oxide with comparison to graphite oxide and graphite. XPS analysis of the functionalized graphene and reduced graphene oxide at (b). the C1s region and (c). the O1s region. The functionalized graphene contained a large amount of oxygen (24.5%) and the reduced graphene oxide contained a negligible amount of oxygen (5.8%). Images (d). and (e). are FE-SEM and HR-TEM images of the functionalized graphene, respectively. Images (f). and (g). are FE-SEM and HR-TEM images of the reduced graphene oxide, respectively. The FE-SEM images were obtained by cutting the sample using an FIB.
