fig4
From: Heteroatom-driven the rapid electrochemical process of anthracite derivatives in sodium-ion battery
Figure 4. (A) Charge-discharge curves, (B) multiplication rate performance, (C) EIS spectra, (D) CV curves and (E) stability test at 1 A g-1 of C, Cp, ACp and ACp-N-Cl. EIS: Electrochemical impedance spectroscopy; CV: cyclic voltammetry.
