MoS2 nanosheet arrays supported on hierarchical porous carbon with enhanced lithium storage properties

摘要

MoS_2 nanosheet arrays supported on hierarchical nitrogen-doped porous carbon(MoS_2@C) have been synthesized by a facile hydrothermal approach combined with high-temperature calcination.The hierarchical nitrogen-doped porous carbon can serve as three-dimensional conductive frameworks to improve the electronic transport of semiconducting MoS_2.When evaluated as anode material for lithium-ion batteries,the MoS_2@C exhibit enhanced electrochemical performances compared with pure MoS_2 nanosheets,including high capacity(1305.5 mAhg^(-1) at lOOmAg^(-1)),excellent rate capability(438.4mAhg^(-1) at 1000mAg^(-1)).The reasons for the improved electrochemical performances are explored in terms of the high electronic conductivity and the facilitation of lithium ion transport arising from the hierarchical structures of MoS_2@C.