Facile synthesis of MoS2@TiNb2O7 nanocomposite anode materials with superior electrochemical performance for Li-ion batteries

Abstract

Novel hierarchical MoS2@TiNb2O7 (MS@TNO) hetero-nanostructures consisted of TiNb2O7 nanorods and ultrathin MoS2 nanosheets were successfully synthesized by simple sol-gel/hydrothermal processes. The synergistic effects of the two constituents benefited to the lithium-ion transport kinetics of the MS@TNO hetero-nanostructure for lithium-ion batteries (LIBs). In the potential range of 0.01~3.00 V vs. Li/Li+, the MS@TNO-based LIBs exhibited high capacities of 925 and 771 mAh g−1 after 50 and 200 cycles at a current density of 0.5 A g−1, respectively, and excellent rate performance of 579 mAh g−1 at 4 A g−1. The obtained anode materials exhibited excellent electrochemical performance with superior reversible capacity, rate capability, and cyclic stability. The outstanding electrochemical property of 3D MS@TNO hetero-nanostructures allows their application in high-performance anode materials for next-generation LIBs.