Chemical Routes to Graphene-Based Flexible Electrodes for Electrochemical Energy Storage - Low-cost Nanomaterials: Toward Greener and More Efficient Energy Applications - page 427

Fig. 7 Schematic illustration and digital images of graphene paper with plane defects (holes)
fabricated by a acid oxidation and b KOH activation method. Reprinted with permission from [ 63
and 65 ]. Copyright (2011 and 2012)
Fig. 8 Illustration of the formation process of graphene paper a GO aqueous dispersion. b GO
dispersion frozen at -50 C. c GO aerogel obtained by freeze drying (b) in vacuum. d Graphene
aerogel obtained by treating (c) at 200 C in air. e Mechanical press graphene aerogel to form
graphene paper