Fig. 2: Morphology model and characterizations.
From: A robust polyaniline hydrogel electrode enables superior rate capability at ultrahigh mass loadings
a Schematic illustration and photograph of radial fracture cross-section before and after lyophilization. b Schematic illustration of the radial porous structure in PPH (cross-section and side section). c–e, g, and h are SEM images of radial structure in cross-section. f SEM images of porous lamella in the side section. i and j TEM images of lamella in cross-section and side section, respectively.
