Fig. 7
From: Supercapacitors with alternating current line-filtering performance
Reproduced with permission from Ref [17]. Copyright 2016. American Chemical Society
a Schematic for the fabrication of stretchable MSCs; b optical image of the MSC under a strain force of 200%; c optical image of the MSC without any strain force; d SEM image of strain-free thin films; e phase angle versus the frequency under different strain forces; Reproduced with permission from Ref [72]. Copyright 2017. Elsevier. f Schematic of flexible all-solid-state supercapacitors; g SEM image of the CNT electrode; h dependence of the phase angle with frequency; and i dependence of frequency and areal capacitance.