642915.fig.002a
(a)
642915.fig.002b
(b)
642915.fig.002c
(c)
Figure 2: (a) Schematic drawing of the preparation of the honeycomb structured film based on graphene oxide; (b) charge and discharge cycle curves of the honeycomb patterned film as anode in lithium cells at a current density of 50 mA/g; (c) capacity versus cycle number for the honeycomb film at a current density of 50 mA/g [22].