Molybdenum disulfide/phosphorus-doped carbon nanosheet composites as anode materials for sodium ion batteries

Abstract In this paper, the phosphorus-doped carbon nanosheet and molybdenum disulfide (P-CNSs-MoS 2 ) composites was synthesized by a hydrothermal method, and the P-CNSs-MoS 2 composites could be applied as anode material for Na + battery. The morphology and structure of the composites were characterized by X-ray diffractometer (XRD) and scanning electron microscopy (SEM). And the electrochemical properties of the composite were also measured. The results showed that the size of MoS 2 material became significantly larger by the attachment and derivation of phosphorus-doped carbon nanosheets, which could also further promote the diffusion of electrons and sodium ions. As the current density was 0.1 A g −1 , the first cycle specific discharge capacity of P-CNSs-MoS 2 composite could reach 1059.2 mA·h/g and its reversible specific capacity could still maintain at 446.2mA·h/g after 20 cycles.