Facile construction of 1 T MoS2 assisted by boron nitride co-doped graphite with fast lithium storage kinetics

Metallic phase molybdenum disulfide (1 T MoS 2 ) is one of the most promising anode materials for lithium-ion batteries. The 1 T MoS 2 is metastable and synthesis of 1 T MoS 2 without harsh and hazardous conditions is remain challenging. In this work, stable 1 T MoS 2 is prepared by the hydrothermal method utilizing the boron nitride co-doping graphite (BNG) nanosheets as substrates. The doping strategy changed the electron states in the graphite realizing the electron redistribution when combined with MoS 2 . The BNG nanosheets act as the electron donor stabilizing the 1 T MoS 2 and guiding the vertical growth of the MoS 2 without agglomeration. As a result, the as-prepared BNG-MoS 2 presents an outstanding lithium storage performance of 1056.3 mAh/g after 500 cycles and 248.3 mAh/g of capacity at a high rate of 20 A/g after 2000 cycles. Electrochemical measurements indicate the enhanced lithium storage kinetics is derived from the elevated electron conductivity and lithium-ion migration. The DFT calculation further confirms the origin of the phase transition and fast lithium storage kinetics is the electron redistribution at the interface of BNG-MoS 2 . This novel strategy gives a new perspective on the synthesis of stable 1 T phase MoS 2 for advanced anode materials.