3D hierarchical porous graphene laminates (GLs) with high surface area and porosity were synthesized through self-assembly of functionalized graphene oxide embedded with SiO2 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−1 after 100 cycles at a current density of 0.2C.
