fig3

Figure 3. (A) CV curves of the Si/CNFs/C anode during the first three cycles; (B) Cycling performance of Si/C, Si/CNFs, and Si/CNFs/C anodes; (C) Rate capability of the three anodes; (D) GCD profiles of the Si/CNFs/C anode at different current densities; (E) GITT curves of Si/C, Si/CNFs, and Si/CNFs/C anodes; (F) Calculated lithium-ion diffusion coefficients for Si/C, Si/CNFs, and Si/CNFs/C anodes; (G) Nyquist plots of fresh Si/C, Si/CNFs, and Si/CNFs/C anodes; (H) Pseudocapacitive contribution of the Si/CNFs/C anode at a scan rate of 0.6 mV s^-1; (I) Pseudocapacitive contributions of the Si/CNFs/C anode at various scan rates. CV: Cyclic voltammetry; CNFs: carbon nanofibers; GCD: galvanostatic charge-discharge; GITT: galvanostatic intermittent titration technique.