MoS2@nitrogen Doped Carbon Composite Structure Electrode Material Preparation and Sodium Ion Storage Performance
In view of the low specific capacity of nitrogen-doped carbon for electrochemical sodium storage,MoS2@nitrogen-doped carbon composite(MoS2@NC)was synthesized by vapor-phase vulcanization of polyaniline nanorods soaked with ammonium molybdate.In the electrode materials,MoS2 exists in two forms:Monolayer structure embedded in nitrogen-doped carbon and nanosheet growing on the surface of carbon nanorods.Compared with ni-trogen-doped carbon nanorods,MoS2/nitrogen-doped carbon electrode materials show superi-or sodium ion storage properties,such as high specific capacity(When the current density is 1 A·g-1,specific capacity is 586.0 mAh·g-1),high rate(specific capacity is 403.8 mAh·g-1 when the current density is 2 A·g-1)and excellent cycle stability(capacity is 434.1 mAh·g-1 after 290 cycles).This synthesis method realizes the design of MoS2/carbon hybrid materials at the molecular level,and has a good application prospect in the design of high-performance hybrid electrode materials for sodium ion batteries.
MoS2nitrogen doped carbonsodium ion batteriesanode materials
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