Phosphotungstate (H3PW12O40) is a kind of heteropolyacid polyoxometalate. Phosphotungstate is a well-developed positive electrode active material in heteropoly acid clusters due to its reversible multi-electron redox reaction. It can achieve a specific capacity of 260Ah/kg and excellent performance of rapid charge and discharge, and its capacity exceeds 150Ah/kg of the conventional Li2CoO2 lithium ion battery which has been commercialized.

Spherical tungsten powder is mainly used in thermal spraying, filter materials, cathode and porous materials because of its good sphericity and fluidity and high compacting density. At present, the demand for high quality spherical tungsten powder is increasing day by day. In the field of thermal spraying, spherical tungsten powder is more uniform and compact because of its good fluidity and high compacting density.

Wolframite has a large proportion and is brittle. Slime is easily produced in the process of mining and dressing. In the early stage, shaking bed and centrifugal gravity separation are mainly used to recover wolframite. Shaking bed surface zoning is obvious and easy to operate, but the unit area processing capacity is small, the recovery rate is low when treating fine mud, and metal is easily lost from fine mud. Although centrifugal concentrator has large processing capacity and high recovery efficiency for fine mineral particles, its water consumption is large, and it is difficult to achieve ideal indicators in actual industrial production.

Carbon fiber is known as a new inorganic material. It has a series of excellent properties such as high specific strength, high specific modulus, high temperature resistance, corrosion resistance, fatigue resistance, radiation resistance, conductivity, heat transfer, shock absorption and noise reduction. As a typical high performance fiber, carbon fiber is widely used as a reinforcing fiber of advanced resin matrix composites. At present, its application field is mainly in aviation and aerospace. It can greatly reduce the weight of prefabricated parts and further improve the technical performance.

There are a large number of X, gamma rays and neutrons in the radiation field environment of nuclear power plants and nuclear power plants. In order to ensure absolute safety, these X, gamma rays and neutrons need high-density radiation shielding materials. At present, the commonly used materials are lead-boron polyethylene, boron-containing polypropylene, cadmium plate, boron steel, tungsten-based heavy alloy, boron carbide and aluminum-based boron carbide. The above materials are only lead-boron polyethylene. Material can shield x, gamma rays and neutrons at the same time. Other materials can only shield one of the x, gamma rays or neutrons.

Photoelectrochemical hydrogen evolution technology is a new energy technology. It combines photoelectric conversion process with hydrogen evolution process. Solar energy can be converted into electric energy. It can be further used to prepare hydrogen from electrolytic water by hydrogen evolution catalyst. It has great development potential.

Tungsten-copper composite material is a pseudo-alloy composed of tungsten (high melting point, high hardness ) and copper (high conductivity and thermal conductivity). It is an excellent material to be applied in electrical contacts and electrodes. The combination of low-expansion-coefficient tungsten and high-conductivity copper can be applied to heat sink substrates of airtight packaging such as CPU, IC, solid state microwave tube, radio communication device. It is also used in ultra high voltage electrical contact materials and nozzles. Throat liner, electron beam target and plasma-oriented divertor material.

Last week, the price of ammonium terephthalate (APT) in Europe and the Chinese export market continued to rise, mainly because Jiangxi Province, the world's leading tungsten production center, is undergoing environmental inspections. In addition, due to the unilateral withdrawal of the United States from the Iranian nuclear agreement, the relevant countries in the Middle East are preparing for war, which has also provoked panic in the global buyer market. Therefore, most people will express their concerns about the future supply of tungsten.

Supercapacitors are new energy storage devices between traditional capacitors and secondary batteries that have developed rapidly in recent years. They have the advantages of both - higher energy density than conventional capacitors, and more than two The higher power density of the secondary battery has made it a widespread concern in the field of new energy vehicles.

As energy consumption increases, a large amount of fossil fuels are consumed, resulting in an increase in the emission of nitrogen oxides, causing great damage to the environment. Therefore, NOx emission control under oxygen-rich conditions has become a research hotspot in the field of environmental catalysis and air pollution control technology.