Application of tungsten disulfide in energy storage

Why are tungsten disulfide nanomaterials important?

As a transition metal dichalcogenide, tungsten disulfide (WS 2) nanomaterials make important research progress in the field of energy conversion and storage. In view of the versatile and rich microstructure of these materials, the modification and controllable synthesis of WS 2 nanomaterials also inspire a research interest.

Can tungsten disulfide be used as a supercapacitor?

The supercapacitor (SC) applications of tungsten disulfide (WS 2) and its composites are reviewed. WS 2 -based symmetric, asymmetric, and three-electrode configuration studies are discussed. The electrochemical performances of WS 2 -based thin films, powders, crystals, etc. have been discussed.

What is tungsten disulfide WS 2?

Among the family of TMDs, tungsten disulfide (WS 2) has a unique band structure due to its semiconductor characteristics; namely, its broadband spectral response characteristics, ultra-fast bleach recovery time and excellent saturable light absorption.

How many types of tungsten disulfide are there?

As a typical layered TMD, tungsten disulfide (WS 2) shares the common features with other TMDs in structure, which can be divided into three different types, i.e. 1T (octahedral), 2H (trigonal prismatic) and 3R (rhombohedral) . The crystal structures of WS 2 exert a decisive impact on its physicochemical properties (Fig. 1) .

Does metal-sulfide assist rapid crystallization of tungsten disulphide films on metallic back contacts?

Brunken S, Mientus R, Ellmer K. Metal-sulfide assisted rapid crystallization of highly (001)-textured tungsten disulphide (WS 2) films on metallic back contacts. Physica Status Solidi (A) Appl Mater. 2012;209 (2):317. Regula M, Ballif C, Remskar M, Levy F. Crystallinity and texture promotion in WS 2 thin films.

What is the difference between tungsten disulfide and MNO 2?

However, it is important to note that MnO 2 typically exhibits a lower specific capacitance compared to a system based on tungsten disulfide (WS 2). Additionally, MnO 2 has low electrical conductivity, which can lead to increased internal resistance within the supercapacitor.