Self-Assembled 2D WS2 Interconnected Nanosheets: An Anode Material with Outstanding Lithium-Storage Performance

The unique lithium-ion battery anodes consisting of interconnected nano-architectures with high specific surface areas, adequate buffer space to tolerate the volume change, excellent conductivities, and admirable mechanical stabilities demand for next-generation lithium-ion battery (LIB). Herein this report, highly interconnected and self-assembled tungsten disulfide nanosheets (WS2 NS) array is constructed through simple hydrothermal process. The ultrathin nature of nanosheet array can not only efficiently buffer the huge volumetric change but also abbreviate the Li-ion and electron diffusion path. As expected, the ultrathin WS2 nanosheets array is endowed with excellent structural stability and also very fast electrochemical kinetics, and hence extraordinary lithium-storage performance, such as delivering high capacities of 813.33 mAh g(-1) at a C rate of C/8, admirable rate capability and good cycling stability, that is, 242 and 226 mAh g(-1) at a C rate of 1 and 2 C, respectively, up to 600 cycles.