Fig. 6: Electrochemical performance of 3D-Sp-COFs.

a CVs at 50 mV s⁻¹. b GCDs at 0.5 A g⁻¹. c Specific capacitance dependence on current density. d Long-term cyclic stability performance of 3D-Sp-COF@96 h at 3 A g⁻¹ in 6 M KOH electrolyte. Inset: GCD curves of the 500th and the 6000th cycle, respectively.