fig4
From: Fe single-atom-regulated carbon nanofibers for high-performance lithium/sodium ion battery anode
Figure 4. (A) Initial galvanostatic discharge/charge curves at 50 mA g-1; (B) Cycling at 50 mA g-1; (C) Rate, (D) Diffusion coefficients obtained from EIS spectra and (E) Cycling at 500 mA g-1 of samples. EIS: Electrochemical impedance spectroscopy.
