Self‐Supported Lithium Titanium Oxide Nanosheet Arrays Decorated with Molybdenum Disulfide for High‐Performance Lithium‐Ion Batteries

Abstract Hierarchical nanocomposites of lithium titanium oxide (Li 4 Ti 5 O 12 ; LTO) nanosheet arrays decorated with molybdenum disulfide (MoS 2 ) were synthesized by a hydrothermal approach. Compared to LTO, the as‐synthesized composites showed much improved capacity (433 mA h g −1 after 70 cycles at various current densities), good rate capability (320 mA h g −1 and 210 mA h g −1 at 500 mA g −1 and 2000 mA g −1 , respectively), outstanding cycle stability (174 mA h g −1 after 1000 cycles at 5000 mA g −1 ), and a wide operating temperature range, extending from −15 to 55 °C when used as anode materials for lithium‐ion batteries. The excellent performance of the MoS 2 @LTO composites could be attributed to the improved conductivity and unique hierarchical structure that provides a high contact surface area and reduced diffusion paths for both ion and electron transport. The results give clear evidence of the usefulness of MoS 2 when improving the electrochemical properties of LTO electrodes, promising advanced batteries with high capacity and long cycle life.