▎ 摘　　要

Molybdenum disulfide (MoS2) has been widely deemed as an attractive anode candidate for rechargeable lithium -ion batteries (LIBs) on account of its apparently high capacity and intriguing 2-dimensional layered structure. In our work, the growth of MoS2 nanoflowers with an expanded interlayer spacing onto nitrogen-doped reduced graphene oxide has been successfully performed by using an effective poly(vinylpyrrolidone) (PVP)-guided assembly route. The theoretical and experimental results indicate that PVP, as a linker, is a major contribution, both in regulating the microstructure of MoS2 nanoflowers and improving the electrochemical properties of the flower-like MoS2/N-graphene (F-MoS2/NG) composite. When utilized as anode materials, the as-made F-MoS2/NG composite shows a boosted electrochemical performance for reversible lithium storage. It delivers a high reversible capacity of 1060 mAh/g at 100 mA/g even after 150 cycles, which is much higher than 416 mAh/g of the control MoS2/G electrode. The kinetics analysis reveals that the remarkable rate capability of FMoS2/NG is mainly ascribed to a pseudocapacitive process, which is rendered by its unique architecture including welldefined MoS2 nanoflowers, the doping of nitrogen onto graphene, and the enhanced synergistic effect between them.