Bimetallic sulfide Co9S8/MoS2 heterojunction in three-dimensional carbon architecture for enhancing sodium ion storage

Herein, flower-like Co9S8/MoS2 composites were designed and constructed via a simultaneous vulcanization-carbonization method at different using Co-ZIF as a precursor and adding Mo source. The effect of heterojunction on the diffusion kinetics was analyzed using density functional theory (DFT). The computational results indicate that the electronic structure is reshaped at the interface of the heterogeneous structure, exhibits typical metal properties, and exhibits enhanced electronic conductivity. In addition, the anode material Co9S8/MoS2 synthesized at 700 oC has stable structure and excellent electrochemical performance among the three samples.