Phase Transformation in Tungsten Oxides Toward Energy Storage

Electrochemical performances of different tungsten oxides-based electrodes in supercapacitors image

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.

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Crystal Structure of Tungsten Oxides

Lists tungsten oxides as anode in SCs and their synthesizing methods and electrochemical performances image

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.

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China Rare Earth Market - February 3, 2023

neodymium oxide photo

China rare earth market remained stable in the week ended on Friday February 3, 2023. 

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China’s Tungsten Powder Price Keeps Firm at the Beginning of February 2023

tungsten acid photo

Analysis of latest tungsten market from Chinatungsten Online

China’s ammonium paratungstate (APT) and tungsten powder prices continue to keep firm at the beginning of February 2023. 

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Molybdenum Powder Price - February 3, 2023

molybdenum sheet photo

The overall China’s domestic molybdenum market is relatively optimistic this week, mainly reflected in the general surge in prices of molybdenum products, downstream demand and actual transaction volume. 

Read more: Molybdenum Powder Price - February 3, 2023

 

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