Figure 3

(a) The 1st charge/discharge profiles for graphite and FLG at rate 0.1 C; (b) Rate performance of graphite and FLG at various current rate from of 0.1 C to 10 C. (c) Comparison of graphite and FLG rate performance; (d) Representative charge and discharge curves of graphite at various current densities; (e) Representative charge and discharge curves of FLG at various current densities; (f) Representative charge and discharge curves of graphite at various current densities.