Nanometer Tungsten Disulfide Electrode Materials

Nanometer tungsten disulfide electrode material, with high specific capacity, large specific surface area and good thermal stability, is considered as an ideal energy storage electrode material, widely used in the field of electrical materials.

Nanometer tungsten disulfide is a two-dimensional layered material. The layered tungsten disulfide crystals are composed of unit layers of S=W=S. In the unit layer, each W atom is connected with two S atoms by strong covalent bonds. The atoms in the crystal form a network planar structure through arrangement. And layers are bound by weak van der Waals’ forces.

In a battery, the electrode is the site of REDOX reactions with electrolyte solutions. There are positive and negative electrodes. Generally positive electrode is cathode gaining electrons with reduction reactions, and negative electrode is anode losing electrons with oxidation reactions. An electrode can be metal or nonmetal. It becomes an electrode if it can exchange electrons with an electrolyte solution.

Nanometer tungsten disulfide electrode material has the following advantages:

(1) High specific capacity and large specific surface area. Nanometer tungsten disulfide has a layered structure similar to graphene, with high specific capacity and large specific surface area, is an ideal energy storage electrode material, which can better realize the charging and discharging process of the battery.

(2) Low density, large storage space. Nanometer tungsten disulfide layers are connected by weak van der Waals’ forces. The layer’s size is generally on the nanometer scale. There are hollow interior and gaps between layers, occupying a relatively large space, which can effectively store hydrogen and lithium.

(3) Good thermal stability. Nanometer tungsten disulfide is an excellent energy storage battery material with good thermal stability. It can be repeatedly used and cyclically charged.

• < Prev
• Next >