Figure 4From: Reduced chemically modified graphene oxide for supercapacitor electrodeXPS analysis of graphene samples. XPS general spectra of RGO-24 and RCMGO-24 (a), determination of K from K2p spectra of RCMGO-24 (b), CIs XPS spectra of RGO-24 (c), and C1s XPS spectra of RCMGO-24 (d).Back to article page