Flexible Freestanding Carbon Nanofiber-Embedded TiO₂ Nanoparticles as Anode Material for Sodium-Ion Batteries

Figure 4

(a) CV curves of CNF-TiO₂ at different scan rates from 0.1 mV·s⁻¹ to 1 mV·s⁻¹. (b) The relationship between peak current (i) and scan rates (v). (c) The contribution of capacitive (red) and battery (blank) reaction at 0.5 mV·s⁻¹. (d) The ratio of capacitive and battery contribution at different scan rates.

(a)

(b)

(c)

(d)