Facile Spraying Synthesis and High‐Performance Sodium Storage of Mesoporous MoS 2 /C Microspheres

A facile one‐step spraying synthesis of MoS 2 /C microspheres and their enhanced electrochemical performance as anode of sodium‐ion batteries is reported. An aerosol spraying pyrolysis without any template is employed to synthesize MoS 2 /C microspheres, in which ultrathin MoS 2 nanosheets (≈2 nm) with enlarged interlayers (≈0.64 nm) are homogeneously embedded in mesoporous carbon microspheres. The as‐synthesized mesoporous MoS 2 /C microspheres with 31 wt% carbon have been applied as an anode material for sodium ion batteries, demonstrating long cycling stability (390 mAh g −1 after 2500 cycles at 1.0 A g −1 ) and high rate capability (312 mAh g −1 at 10.0 A g −1 and 244 mAh g −1 at 20.0 A g −1 ). The superior electrochemical performance is due to the uniform distribution of ultrathin MoS 2 nanosheets in mesoporous carbon frameworks. This kind of structure not only effectively improves the electronic and ionic transport through MoS 2 /C microspheres, but also minimizes the influence of pulverization and aggregation of MoS 2 nanosheets during repeated sodiation and desodiation.