Rapid Construction of Two-Dimensional N, S-Co-doped Porous Carbon for Realizing High-Performance Lithium-Sulfur Batteries

In this work, based on the industrial refinery product of pitch, we have developed a simple method for the production of metal-free, nitrogen, and sulfur co-doping porous carbon nanosheets (NSPC). The obtained NSPC exhibited a high specific surface area (339 m(2).g(-1)) and puissant adsorbability for sulfur fixation. At the same time, the co-doping of N and S can effectively improve the electrical conductivity of carbon nanomaterials, and further improve the adsorption and conversion reaction of lithium polysulfides (LIPSs). The NSPC/S electrode delivered superior cycling performance (762 mAh.g(-1) at 0.6C after 200 cycles). This work represents a rapid and massive production of two-dimensional porous carbon materials with high content of N and S as the cathode for advanced lithium-sulfur batteries.