▎ 摘　　要

As promising next generation battery systems, the future practical application of lithium-sulfur batteries has been restricted by their low conductivity and the shuttle effect of polysulfides. To solve these issues, herein we design a three-dimensional graphene-like matrix composited with nanoscale iron oxide as a host for sulfur, which can be easily synthesized from citric acid under the reaction of ferric chloride via a simple one-step route. The as-prepared graphene-like matrix with a large specific surface area and an ordered space structure can host more sulfur, provide more space for sulfur expansion, and improve electrical conductivity. In addition, the polar nitrogen and iron oxide nanoparticles uniformly distributed on the surface of the carbon sheet strongly adsorb polysulfides to minimize the shuttle effect. On the basis of the above design, the electrode delivers an initial specific capacity of 1196 mA h g(-1) at 0.1C and a discharge capacity of 829 mA h g(-1) at 0.5C after 300 cycles. This work will provide a promising direction for high performance lithium-sulfur batteries, especially in practical industrialization applications.