The novel g-C3N4/MoS2/ZnS ternary nanocomposite with enhanced lithium storage properties

Novel g-C3N4/MoS2/ZnS ternary heterojunction as high performance anode has been successfully designed and synthesized via a facile one-step hydrothermal process. The electrochemical reversibility of MoS2 for Li+ storage is improved by g-C3N4 and ZnS modification in this study. Electrochemical tests demonstrate that the g-C3N4/MoS2/ZnS electrode deliver a high reversible capacity of 1310 mAh g at the current density of 0.1 A g(-1) and a high rate capability (maintaining 84.5% at 800 mA g(-1)). Moreover, the electrode still can achieve a capacity of 805 mAh g(-1) even at 1 A g(-1). The enhanced electrochemical performance can be attributed to the synergetic effect between few-layer MoS2/ZnS heterojunctions and g-C3N4 within the interface region, which provides excellent charge transfer field and availably restrains the corruption and aggregation during charging and discharging process.