Tungsten disulfide (WS2) is a semiconductor with a band gap, which gives WS2 a wide range of light absorption, and therefore, WS2 can be considered a promising photocatalyst for photocatalysis degradation of organic pollutants and hydrogen production from water decomposition. WS2 extends the light absorption region to the long-wave direction, and through morphological tuning, WS2 can achieve near-infrared photocatalytic activity.

As potential high-capacity anode materials for Lithium-ion batteries (LIBs), TMDCs have gained considerable attention, especially WS2 nanomaterials, which exhibit a higher theoretical specific capacity (433 mAh.g-1) than commercial graphite due to the 2D layer structure and the large platelet space. When used as an anode for lithium-ion batteries, WS2 exhibits an increasing lithium storage capacity. For example, Liu et al. prepared an ordered mesoporous WS2 as an anode for LIBs, which showed a high lithium storage capacity of 805 mAh.g-1 at a current of 0.1A.g-1.

WS₂ has attracted much attention due to its unique structural properties and suitable hydrogen binding energy (comparable to platinum group metals). WS₂ nanomaterials have been extensively investigated for energy conversion and storage systems.