Graphene/polyaniline composite sponge of three-dimensional porous network structure as supercapacitor electrode
Jiang Jiu-Xing, Zhang Xu-Zhi, Wang Zhen-Hua†, , Xu Jian-Jun
       

Optical images of (a) sponge of GO, composite sponge of (b) GOP1:0.4, (c) GOP1:1, (d) GOP1:3, (e) GOP1:5, and (f) PANI power prepared by the process of freeze drying.