fig4
From: Capillary slit induced graphene laminate films towards enhanced areal capacitive energy storage
Figure 4. (A) XPS C 1s spectra of S-ATGO/CG; (B) XPS C 1s spectra of S-ATrGO/CG; (C) XPS O 1s spectra of S-ATGO/CG; (D) XPS O 1s spectra of S-ATrGO/CG. XPS: X-ray photoelectron spectroscopy; CG: commercial graphene; ATGO: acid-treated graphene oxide; S-ATrGO: sulfuric acid-treated reduced graphene oxide; NS: non-slit.
