Sulfur‐Doped Carbon with Enlarged Interlayer Distance as a High‐Performance Anode Material for Sodium‐Ion Batteries

S-doped carbon is investigated as a high-performance anode material for sodium-ion batteries. Due to the introduction of a high-content of S atoms, the as-obtained S-doped carbon shows an enlarged interlayer distance. As an anode, a high specific capacity of up to 303 mAh g−1 is achieved, even after 700 cycles at 0.5 A g−1. The increasing demand on lithium-ion batteries (LIBs) has led to potential insufficiency of lithium resource. To address this concern, more and more efforts have been made to explore cost-effective rechargeable battery systems beyond LIBs.1 For large-scale stationary applications where the gravimetric energy density is not the most critical concern, room-temperature sodium-ion batteries…

• NN
  National Natural Science Foundation of China

  Awards: 51361130151, 21175050
• HU
  Huazhong University of Science and Technology