A 3D Network of Graphene/Silicon/Graphene Sandwich Sheets as Anode for Li-Ion Battery

<p>A freestanding 3D network strucutre of graphene/Si/graphene designed & fabricated.</p> <p>Coloumbic efficiency of the first de-/liathiation cycle over 80%.</p> <p>Stable areal capacities up to 0.62 mAh cm<sup>-2</sup> were achieved.</p><p>Anodes maitained interconnected, superlight, flexible structures after 1000 cycles.</p>