Embedding SiO sub(2) into graphene oxide in situ to generate 3D hierarchical porous graphene laminates for high performance lithium-sulfur batteries

3D hierarchical porous graphene laminates (GLs) with high surface area and porosity were synthesized through self-assembly of functionalized graphene oxide embedded with SiO sub(2) in situ. Thus, as a cathode material for Li-S batteries, the obtained GLs loaded with 73 wt% sulfur, deliver a high discharge capacity of 800 mA h g super(-1) after 100 cycles at a current density of 0.2C.