fig5

Figure 5. (A) GCD curves of M-C₃N₄-x//Zn based ZIHSCs at 0.05 A·g^-1; (B) GCD curves of M-C₃N₄-2//Zn ZIHSC; (C) Discharge specific capacities of M-C₃N₄-x//Zn based ZIHSCs at different current densities; (D) Ragone plots of M-C₃N₄-x//Zn based ZIHSCs; (E) GCD cycling stability of M-C₃N₄-2//Zn ZIHSC at 1 A·g^-1; (F) Photographs of a portable electronic watch powered by M-C₃N₄-x//Zn based ZIHSCs. GCD: Galvanostatic charge/discharge; ZIHSCs: zinc-ion hybrid supercapacitors.