Rare earth market quotation in China: praseodymium oxide price is unchanged from the previous day while praseodymium neodymium oxide and mental prices decline slightly on February 8, 2023. 

China's molybdenum market generally showed a high-level consolidation pattern on February 8, 2023. With the gradual weakening of positive support, some suppliers' confidence in firm quotations has loosened, which is mainly reflected in the rational correction of ferro molybdenum and molybdenum concentrate prices. At the same time, representative transactions in the market are less.

Analysis of latest tungsten market from Chinatungsten Online

China tungsten price continues to be stable at the beginning of the week. Last week, cemented carbide companies successively issued notices on product price increases because the price of raw materials continued to rise and the cost of production was pushed up. 

Analysis of latest tungsten market from Chinatungsten Online

China tungsten price was in the upward trend in the first trading week after the holiday of the Lunar New Year. 

At the beginning of the week, the overall China rare earth price has not changed significantly. Although the Spring Festival and the Lantern Festival have just ended, some downstream companies have not yet fully resumed normal production, resulting in a relatively small actual transaction volume.

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. 

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.

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.

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.

Tungsten trioxide (WO₃) is the most widely used tungsten oxide today. Perfect tungsten oxides are ReO₃-type cubic crystal structure materials in which octahedral WO₆ are interconnected by parting the angles. In the WO₆ octahedron, the W atom is located in the center and the remaining six O atoms form the octahedral framework. With changes in temperature and pressure, the WO₆ octahedra tilt and rotate at certain angles, leading to the formation of several different phases: tetragonal, orthorhombic, monoclinic, triclinic, and cubic phases.