fig6
Figure 6. (A) CV curves of M-C3N4-2//Zn ZIHSC at 2~100 mV·s-1; (B) b values (the embedded graph is a linear fit curve); (C) Capacitance contribution of M-C3N4-2//Zn ZIHSC at 2~100 mV·s-1; (D) Example diagram of capacitance contribution of M-C3N4-2//Zn ZIHSC at 2 mV·s-1; (E) Nyquist plots of M-C3N4-x//Zn based ZIHSCs; (F) Relationship between Z’ and ω-1/2. CV: Cyclic voltammetry; ZIHSC: zinc-ion hybrid supercapacitor.