Fabrication of novel lamellar alternating nitrogen-doped microporous carbon nanofilm/MoS2 composites with high electrochemical properties

Abstract

Microporous organic polymers have special structures and important properties, but their hard processability severely limits their practical applications. In this study, we synthesize nitrogen-containing microporous organic polymer nanofilms by using an interfacial polymerization strategy and then use them as a template to fabricate novel nitrogen-doped microporous carbon nanofilm/molybdenum disulfide (NMC-nanofilm@MoS₂) composites. Owing to the surfaces of NMC nanofilms homogenously covered by MoS₂ nanosheets to form an alternating layer-by-layer nanostructure of MoS₂ and NMC nanofilms, the obtained composite-based electrodes exhibit superior electrochemical performances to the previously reported MoS₂-based composites, with a specific capacity of as high as 1190 mA h g⁻¹ after the 500^th cycle at a current density of 1.0 A g⁻¹, and 908 mA h g⁻¹ after the 2000^th cycle at a current density of 2.0 A g⁻¹.