fig5
![Modulating the graphitic domains of hard carbons via tuning resin crosslinking degree to achieve high rate and stable sodium storage](https://image.oaes.cc/e1ff4f58-1079-4041-9d18-e53221a0bd00/em30117.fig.5.jpg)
Figure 5. (A and B) Na+ diffusion coefficients calculated from the GITT potential profiles under discharge/charge processes; (C) EIS analysis after ten cycles; (D) Sodium storage diagram of AFR-HCs. GITT: Galvanostatic intermittent titration technique; EIS: electrochemical impedance spectroscopy; AFR: aminophenol formaldehyde resin; HCs: hard carbons.