Cobalt and oxygen double doping induced C@MoS2–CoS2–O@C nanocomposites with an improved electronic structure and increased active sites as a high-performance anode for sodium-based dual-ion batteries

Cobalt and oxygen double doping induced C@MoS 2 –CoS 2 –O@C nanocomposites has been synthesized. The special structure improves electronic structure, increases active sites and possesses superior electrochemical performance.