China tungsten price continues to pick up at the beginning of the week. Under the situation of sharp rise in molybdenum prices in the early stage, molybdenum holders generally have a strong willingness to take profits recently. 

WO₃ hosts a theoretical capacitance of 1112 F.g^-1 and is quite promising as an electrode material for energy storage devices, but it has disadvantages such as poor electrical conductivity and rate performance, and weak cycling stability. The main improvement methods can be divided into two parts: obtaining nanostructured single-phase tungsten oxides and obtaining multiphase structures consisting of tungsten oxide with other materials such as carbon materials, transition oxides, and organic materials.

Combining WO₃ with other materials into multiphase tungsten oxide nanocomposites is a straightforward approach by which better properties can be obtained in terms of good electrical conductivity, high capacitance, and good stability. These obtained composites may have the advantages of a single component and it is easier to obtain special structures that further optimize their properties. Carbon materials are often selected for their attractive electrical conductivity and low cost. In addition, they are also used as electrodes for double-layer capacitors.

It is quite important to understand the working mechanism of tungsten oxides from phase change to energy storage. Supercapacitors (SCs) and lithium-ion batteries (LIBs) are two typical types of efficient energy storage devices (ESDs), and electrochromic devices (ECDs) can also be considered as ESDs.