fig15

Figure 15. (A) Schematic of the device preparation process of SCs based on a single hydrogel electrolyte. (B) Image of a PANi-PVA SC. (C) Optical microscopy cross-section image of a PANi-PVA SC. (D) Cross-sectional SEM image of a PANi SC^[219]. (E) Schematic illustration of the stable network structure of an integrated all-hydrogel supercapacitor during the stress-strain process (F: force). (B-G) Electrochemical stability of an all-hydrogel supercapacitor under variant deformations^[222].