Facile fabrication of CNTs@C@MoSe2@Se hybrids with amorphous structure for high performance anode in lithium-ion batteries.

Amorphous MoSe2 and Se anchored on amorphous carbon coated multiwalled carbon nanotubes (CNTs@C@MoSe2@Se) have been synthesized by a facile solvothermal strategy. The one dimensional CNTs@C@MoSe2@Se can effectively buffer the volume variation, prohibit the aggregation and facilitate electron and ion transport throughout the electrode. Furthermore, the combination of MoSe2 and Se also provides buffer spaces for the volumetric change during cycling. Thus, the obtained CNTs@C@MoSe2@Se hybrids display the enhanced cycle stability and excellent high rate capacity. The reversible capacity of 1010mAhg-1 can be achieved after 100 cycles at the current density of 0.1Ag-1. Even after 500 cycles, a reversible capacity of 508mAhg-1 is still retained at 5Ag-1.