Figure 7

Supercapacitor performance of NHPC-5 in an organic electrolyte: (a) CV curves, (b) GCD curves, (c) specific capacitances calculated from the GCD curves; (d) Ragone plots of the power density vs energy density; (e) electrochemical durability was tested through 10,000 cycles at a high charge–discharge current density of 10 A g−1; (f) Nyquist plots in comparison of before and after long-cycle test.