Figure 6.

Capacitive performance under cyclic compression. a–c) Capacitance retention of the supercapacitor that was compressed for 1000 cycles at different strain levels of 20%, 50%, and 80%, respectively. d) Schematic of an energy‐storage system that four supercapacitors were connected in series as an integrated device to be charged through an electrochemical working station and then power a LED. e) Photographs of the integrated device that could be compressed reversibly and still powered well under cyclic compression. f) GCD curves of the single supercapacitor and four serial supercapacitors at current density of 1.2 A g⁻¹. g) CV curves of the single supercapacitor and four serial supercapacitors at a scan rate of 10 mV s⁻¹.