▎ 摘　　要

A simple strategy for the reduction of graphene oxide by annealing was used to produce 3D hierarchically interconnected porous graphene (HIPG) samples. The optimized HIPG-900 sample possessing a specific surface area of 367.4 m(2) g(-1) and pore volume of 1.3 cm(3) g(-1) contains a large amount of sulfur (65.8 wt%) and improves the utilization of sulfur when used as the cathode of Li-S batteries. A high initial specific discharge capacity of 914.1 mAhg(-1) and a specific capacity of 486.0 mAhg(-1) after 500 cycles was obtained for HIPG-900/S composites at 1C. A high specific capacity of 467.2 and 162.4 mAhg(-1) was obtained at a high rate of 10C with a Coulombic efficiency of over 90.0% at the 1st and 500th cycle, respectively.