fig5

Figure 5. (A) Scheme of Ni₃N-Co₂N_0.67/NC//AC asymmetric supercapacitor. (B) CV curves of Ni₃N-Co₂N_0.67/NC and AC at 20 mV s^-1. (C) CV curves of Ni₃N-Co₂N_0.67/NC//AC ASC at different voltage ranges at 20 mV s^-1. (D) GCD profiles of Ni₃N-Co₂N_0.67/NC//AC ASC at different voltage ranges at 1 A g^-1. (E) CV curves of Ni₃N-Co₂N_0.67/NC//AC ASC at different scan rates. (F) GCD profiles of Ni₃N-Co₂N_0.67/NC//AC ASC at different current densities. (G) Specific capacitance of Ni₃N-Co₂N_0.67/NC//AC ACS calculated from GCD test. (H) Ragone plots comparing the Ni₃N-Co₂N_0.67/NC//AC with other similar electrode materials. (I) Cycle performance of Ni₃N-Co₂N_0.67/NC//AC ASC at 10 A g^-1 (Inset: the photo of two ASC devices connected in series to light a LED bulb and to rotate a fan).