Enhanced Sodium‐Ion Storage Performance of a 2D MoS<sub>2</sub> Anode Material Coated on Carbon Nanotubes
Wanying Li, Tariq Bashir, Jiaqi Wang, Shaowen Zhou, Shiqi Yang, Jianqing Zhao, Lijun Gao
Abstract
Abstract Molybdenum disulfide (MoS 2 ) is considered a promising anode material for sodium‐ion batteries (SIBs). However, it suffers from poor kinetics and rapid capacity decay. In this work, a coaxial heterostructure composed of MoS 2 nanosheets coated on carbon nanotubes (CNTs) is reported, where the MoS 2 layers are less stacked at the surface of the CNTs substrate with an enhanced interlayer spacing, which is prepared through a simple one‐pot hydrothermal preparation. The MoS 2 @CNTs composite material is proven to have superior rate performance as an anode material for SIBs, which delivers 508, 418, 359, 305, 258, and 183 mAh/g at current densities of 0.1, 0.2, 0.5, 1, 2, and 5 A/g, respectively, together with excellent cycling stability to retain 360 mAh/g after 400 cycles at 0.5 A/g, owing to the robust combination of MoS 2 and CNT components. This work offers a way to synthesize heterostructured composite materials with great performance superiority for large‐scale energy storage systems.