fig4

Figure 4. Electrochemical performances of the NDPCs by the two-electrode system: (A) CV curves at 10 mV s^-1, (B) GCD curves at 1 A g^-1, (C) gravimetric capacitance, (D) volumetric capacitance, (E) Nyquist plots, and (F) Ragone plots. (G) Cycle stability at 10 A g^-1 of NDPC-0.5.