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. 2020 Apr 29;11:2077. doi: 10.1038/s41467-020-15991-6

Fig. 5. The effect of severe bending of a supercapacitor.

Fig. 5

a Capacitance retention as a function of the bending extent of the supercapacitor (which is defined as the ratio of the end-to-end separation in the bent supercapacitor to this separation for the non-bent supercapacitor). b Capacitance retention for supercapacitors based on rGO, rGO-AD, MrGO, and MrGO-AD sheets during up to 17,000 bending cycles to a bending extent of 25% (which corresponds to a 180° angle between supercapacitor ends). Scale bar, 2 cm (inset). c Nyquist plots for a MrGO-AD supercapacitor, which were measured after various cycles of bending to the 180° angle of b. d Schematic diagram of three in-parallel MrGO-AD supercapacitors (both unbent and with 180° angle bending) and the corresponding circuit diagram. Galvanostatic charge-discharge curves for three e in-parallel and f in-series MrGO-AD supercapacitors. g–i In-series operation of three MrGO-AD supercapacitors to light an LED (~1.7 V) when in g, flat. h, 180° bent. i in twisted states. Scale bar, 2 cm (g–i).