Tungsten Oxide

With the vigorous development of the new energy vehicle industry, the demand for power lithium-ion battery continues to heat up, causing many lithium-ion battery materials to face supply shortages. Many people in the industry said that whoever has the upstream lithium resources, nickel resources and cobalt resources will have the initiative to develop power batteries. In view of the above situation, perhaps tungsten resources can effectively alleviate it. It is reported that in recent years, energy storage scientists have developed a lithium-ion battery using nano tungsten oxide as the electrode material, which has good physical and chemical stability, strong endurance and the advantage of civilian prices, mainly because of the oxidation tungsten powder is easy to prepare and has relatively new photoelectric properties. In addition, China is the country with the most abundant tungsten resources in the world, distributed in 23 provinces and autonomous regions, and its output rank...

As the lithium-ion batteries that power most phones, laptops, and electric vehicles become increasingly fast-charging and high-performing, they also grow increasingly expensive and flammable. In research published recently in Energy Storage Materials, a team of engineers at Rensselaer Polytechnic Institute demonstrated how they could — by using aqueous electrolytes instead of the typical organic electrolytes — assemble a substantially safer, cost-efficient battery that still performs well. If you were to take a look inside a battery, you’d find two electrodes — an anode and a cathode. These electrodes are immersed in a liquid electrolyte that conducts ions as the battery charges and discharges. Aqueous electrolytes have been eyed for that role because of their non-flammable nature and because, unlike non-aqueous electrolytes, they aren’t sensitive to moisture in the manufacturing process, making them easier to work with and less expensive. The biggest challenge with th...

At present, the spreading of COVID-19 is furious in the world. Several previous difficult viruses (such as HIV, HBV, PIV, etc.) have not yet been attacked, and new mutant viruses (such as SARS coronavirus, avian influenza virus, and H1N1 influenza virus, etc.) have appeared in humans, seriously affecting human health.  Many viruses, such as influenza virus, SARS coronavirus, avian influenza virus, and human immunodeficiency virus, are difficult to control. The main reason is that these viruses are infected on the mucosal surface, the antigenicity is weak, and antigenic mutations and drug resistance mutations are prone to occur. This has led to poor clinical prevention or treatment of these viruses. The detection, prevention and treatment of infectious diseases are difficult problems in the medical field. At present, the control of viral infectious diseases is mainly vaccine prevention, but there is no effective treatment strategy for established viral infections. However, ...

As one of the most hot topics recently, cobalt-free lithium ion battery is considered as an upgraded version of the current commercial ternary lithium ion battery. Because of their higher energy density and lower production costs, they are popular among many battery manufacturers. As a typical transition metal N-type semiconductor material, how should nano tungsten oxide be used in cobalt-free lithium battery? Nano tungsten oxide can be used as a modifier for the anode material of cobalt-free batteries, and can also be used to produce high-performance anode materials. In terms of cathode materials, the use of WO3 can not only reduce the use of cobalt metal, but also effectively improve the specific capacity and thermal stability of the product. In terms of anode materials, the use of WO3 can significantly improve the rate performance and lithium storage kinetics. As we all know, the biggest cost of new energy vehicles lies in power batteries. As far as the ternary lithium ...

Benzoic acid is a flake or needle like crystalline with a smell of benzene or formaldehyde, usually made by selective oxidation of toluene. Toluene is obtained by a series of oxidation processes. Benzoic acid is an important food preservative, and is also used in medicine, dye carriers, plasticizers, spices and antibacterial agents. In the traditional chemical process, the production of benzoic acid from toluene requires selective oxidation of toluene under severe conditions, such as high temperature, high pressure, and acidic solvents. Generally speaking, the process is costly and polluting. Tungstate is a kind of photocatalyst which is widely used in industrial wastewater treatment, but some scholars have made use of the principle of petal type bismuth tungstate photocatalyst to produce benzoic acid. Because bismuth tungstate can use oxygen as oxidant to catalyze the oxidation of toluene and its derivatives, thereby simplifying the preparation of benzoic acid and reduc...

The nitrogen oxides produced by coal combustion as a pollutant will affect human health. The most harmful is NO 2 , which mainly affects the respiratory system of human beings, and can cause bronchitis and emphysema. SCR selective catalytic reduction technology has become the most widely used and most effective flue gas denitrification technology in the world. It has the advantages of low reaction temperature, high purification rate, reliable operation and small two pollution. After its catalysis, the main non-toxic and non polluting N 2  and H 2 O are produced. In the SCR  soot denitrification technology  selective catalytic reduction system, it is generally composed of ammonia storage system, ammonia and air mixing system, ammonia injection system, reactor system and monitoring control system, the thermal power plant, SCR reactor is usually installed in the boiler economizer and air preheater, here for the high dust temperature arrangement, smoke temper...

Tungsten and carbon have many similar physical properties, such as high melting point, high hardness, and better conductivity and thermal conductivity. So foreign scientists first took aim at tungsten.  In recent years, foreign scholars through the study found that single layer tungsten disulfide also has excellent semiconductor performance, it not only has excellent characteristics of graphene, there are more excellent than the characteristics of the semiconductor, two tungsten sulfide has a considerable band gap, and it also shows new properties: As the number of atoms increases, the bandgap becomes tunable, and its electron migration rate is better than that of graphene, which is the ideal choice for transistor materials. There is no doubt that the emergence of graphene and other two-dimensional materials to the world's material industry brought about tremendous changes, as China attaches great importance to the material industry, graphene manufacturing technolo...