Figure 7 | Scientific Reports

Figure 7

From: Iron oxides nanobelt arrays rooted in nanoporous surface of carbon tube textile as stretchable and robust electrodes for flexible supercapacitors with ultrahigh areal energy density and remarkable cycling-stability

Figure 7

(a) CV curves at various scan rates, (b) GCD curves at different current densities of an solid-state symmetric supercapacitor with Fe2O3/NPCCT electrode, and (c) Cycling performance and Coulombic efficiency of the supercapacitor (measured at a high current density of 20 mA cm−2) with an inset showing the initial and last four cycles; (d) Ragone plots of our device with comparison to previous reports. (e) Schematic illustrations of assembled structure of a tandem by connecting four SCs in series; (f) Digital photos showing 18 LEDs powered by the tandem, and (g) the tandem being fully folded (bending angle 180°) and (h) being largely twisted.

Back to article page