fig3
From: Capillary slit induced graphene laminate films towards enhanced areal capacitive energy storage
Figure 3. (A) XPS C 1s spectra of GO; (B) XPS C 1s spectra of ATGO; (C) XPS O 1s spectra of GO; (D) XPS O 1s spectra of ATGO. XPS: X-ray photoelectron spectroscopy; ATGO: acid-treated graphene oxide; GO: graphene oxide.
