Scientific News Boron Nitride Graphene Mixture May Be Suitable For Next-Generation Green Cars

Scientific community has long been fascinated by boron nitride due to its unique properties: sturdy, ultra-thin transparent, insulating and lightweight. The boron is a material that can be used by a wide range of researchers.
According to researchers at Rice University a graphene film separated by boron nanotube columns could be used as a material for storing fuel hydrogen in automobiles.

The Department of Energy is setting the benchmark in storage materials to make hydrogen fuel a practical option for light vehicles. A new computational study by materials scientist Rouzbeh Sharsavari of Rice Lab has determined that pillared Boron Nitride and Graphene may be suitable candidates.

Shahsavari’s laboratory determined the elastic and columnar graphene structures by computer simulation, and then processed the boron nanotubes to create a mixture that simulates an unique three-dimensional structural design. (A sample consisting of boron nanotubes that are seamlessly bonded with graphene is prepared.

As the pillars of the building provide space between floors for people, so do the pillars within the graphene made from boron-nitride. The goal is to keep them inside and then exit when needed.

The researchers discovered that the pillared graphene and pillared Boron Nitride graphene have a high surface area (approximately 2,547 sq. m. per sq. m.) as well as good recyclability in ambient conditions. Their model shows adding oxygen or lithium will improve the material's ability to combine with hydrogen.

They concentrated their simulations on four different variants: either a graphene boron oxide or lithium doped boron graphene.

The best graphene at room temperature was oxygen-doped boron oxide graphene. This graphene weighs 11.6% (weight capacity) and 60 g/L volume capacity.

The material's hydrogen weight was 14.77% in cold weather at -321 Fahrenheit.

The current US Department of Energy economic storage media goal is to store more hydrogen than 5.5% in weight and 40 grams of hydrogen per liter under moderate conditions. The ultimate target is 7.5% weight and 70 gram per liter.

Shahsavari explained that the hydrogen atoms adsorb on the undoped pillared Boron Nitride Graphene due to a weak van der Waals force. When the material has been doped with oxygen the atoms firmly bind to the mix and create a surface that is better for hydrogen. According to Shahsavari, this can be done under pressure, and then withdrawn when the pressure is released.

"Due to the nature of charge and interaction, adding oxygen to the substratum gives us a strong bond," said he. "Oxygen, and hydrogen have been known to share a strong chemical affinity."

Shahsavari explained that the combination between boron nitride and graphene, as well as the high electron mobility in graphene, makes this material a highly adaptable one for use.

Shahsavari explains that "we are looking for the best point" which is the perfect balance of surface area, weight and operating temperature, along with pressure and temperature. This is only possible through computational modeling. We can test many different changes very quickly. In just a couple of days, the experimenter is able to finish the work that would normally take months.

He said these structures are strong enough to easily surpass the requirements of Department of Energy. The hydrogen fuel tank, for example, can withstand up to 1,500 charging and discharging cycles.

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Knowing the interesting chemical elements boron B comes from afar

Boron has been a major name in the world of chemistry. There have been two Nobel Prizes in Chemistry for the work done on boron.

There are a few heat-resistant products on the market that have added boric acids to common glass. This means the glass will not expand or contract easily after joining.

Diamond is the hardest substance known to man. However, recent theories suggest wurtzite, an alternate form of boron, may be harder. However, the crystals for this compound have not been created yet.

Boron compounds have a number of interesting properties. They play a crucial role in polymer crosslinking, which gives plasticine a remarkable ability. It is soft and malleable when held in the hand but becomes hard and elastic if thrown against a surface.

Boric acid is a compound that contains boron and it's often used as a medicine or to kill insects. Boric Acid can be used in chemistry labs to disinfect eyes.
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Compound Name TiH2 Powder Titanium Hydride Application For Welding And Catalysts

The titanium hydride used in powder metallurgy and metal-ceramic sealing is also a source of hydrogen.

Titanium Hydride is very fragile and can be used for powdered titanium. The hydride is also used to weld. Thermal decomposition of titanium hydride precipitates new, ecological hydrogen and Titanium metal. This increases the strength and promotes welding.

PNNL's collaborators and PNNL discovered a method to get around this issue six years in advance. They additionally developed a low cost way of supplying material at a commercial scale. Instead of starting with molten Titanium, the team substituted titanium-hydride (TiH2) Powder.

In the last few years, another BE PM-Ti approach has been developed that allows for the production of BE components which are almost poreless at one time. This method uses vacuum sintering titanium hydride (TiH2) instead of Ti-steel powder. TiH2 powders will dehydrogenate during the entire sintering process at mild temperatures, before being sintered under vacuum at high temperature.

Current implant requirements include biocompatibility and bone-like mechanical properties. Porous Titanium can meet these needs if enough porosity is obtained, as well as large pores and interconnections that allow bone to grow. Porous components are created from TiH2 based feedstocks with space holders.

Tech Co., Ltd., a leading manufacturer of titanium hydroide (TiH2), has over 12 year experience in chemical product development and research. You can contact us by sending an inquiry if you are interested in high-quality Titanium hydride.

Newly 3000°C Ablative Ceramic Coating Successfully Developed - Multi-boron-containing Single-phase Carbide

Boron carbide is also known as black Diamond. It has the molecular form B4C. The powder is typically grayish. It is one the three hardest materials known (the other two being diamond and cubic boronnitride). It can be found in many industrial applications, including tank armor, head armor, and body armor. It has a Mohs toughness of 9.3. A large number of tests were conducted by the team of Academician Huang Boyun of Central South University’s National Laboratory of Powder Metallurgy to develop a new ceramic coating and composite materials that are resistant to 3000°C ablation. This discovery may pave a way for the development hypersonic cars.

According to Professor Xiong Xiang of the Institute of Powder Metallurgy of Central South University's Institute of Powder Metallurgy (IPM), hypersonic flight is defined as a flight speed that is at least 6120 kilometers per hour, or 5 times faster than the speed of the sound. With such high speeds, the flight between Beijing and New York could be completed in just 2 hours - provided the structural components can handle severe air friction as well as hot air impacts of 2000-3000 degrees Celsius. . Central South University has developed ceramic composites and coatings for ultra-high temperatures that provide better protection of the above components. The world's very first synthesis of a quaternary boron containing carbide, single-phase ultra high temperature ceramic material has been reported. The coating is a perfect "fusion", with carbon-carbon-materials. In the field of developing new materials, mixed materials are studied in binary compound system. The successful application of materials quaternary to hypersonic will be greatly facilitated by its development.

The novel ceramic coated modified carbon/carbon material is composed by a single-phase carbide of zirconium (quarterary), titanium (quaternary), carbon and boron (quaternary) elements with a stable carbide structural structure. Infiltration of a multiceramic phase is the main method for obtaining it. The ultra high temperature ceramic combines carbide's ability to adapt to high temperatures with the antioxidation properties provided by borides. This combination gives coatings and composites an excellent ablation and thermal shock resistance. The ceramic oxide can withstand an ultra-high temperature of 3000 degC and has low oxygen diffusion rates, self-healing properties at high temperatures, dense and gradient ceramic coatings, all of which make the ceramic a lighter material. Ablation loss rate.

"This ultra-high-temperature ceramic combines carbide's high temperature adaptability with boride's anti-oxidation properties, resulting in superior ablation and thermal shock resistance. This is essential for hypersonic cars." The promising candidates," said Xiong Xiang.

Nature Communications published the results of research conducted by the team on 15 June. The State Key Laboratory of Powder Metallurgy of Central South University was the first completion unit of this thesis. Zeng Yi and Professor Xiong Xiang are the first correspondents. First author is the doctor. The University of Manchester (UK), a partner unit of the University of Manchester, UK characterized the material and performed an analysis.

After publication, the article attracted a great deal of interest from the foreign media and academic circles. In the three days immediately following publication, this article was downloaded over 5,000-times, whereas other articles were only downloaded 300 to 900 times. The Daily Mail in Britain, The Economist in the United States and Public Machinery (Russia) have all covered the research. . According to the reviewer in Nature Newsletter: "The above results will ignite academic excitement and interest in applying quaternary materials in the field of hypersonics, because it represents a very promising system."

The team began working with Professor Chang Xiang in 2002 with the help of the National 863 and 973, as well as the National Natural Science Foundation. They were led by a Yangtze River scholar, Professor Chang Xiang. Find a new ultra high temperature ceramic coating that has excellent oxidation resistance, and resistance to ablation. During the research, dozens and hundreds of high temperature materials were screened, from silicon carbide through strontium carbide to zirconium and titanium carbides, zirconium and zirconium boreides, tantalum and tantalum carbide. It has taken 15 years to achieve the breakthrough of developing new ablation-resistant coatings in 3000 degC ultra high temperature environment.

Tech Co., Ltd., a professional Boride powder manufacturer, has over 12 years of experience in chemical product development and research. You can contact us by sending an inquiry if you are interested in high quality Boride powder.

Nano silver substitution trend is irreversible

Nanowires to replace infrared first
Due to the rapid growth of the display industry, as well the scarcity of indium, and the high processing costs of ITO films, industry leaders have been searching for alternatives, such as nanowires. Silver nanowires, among other alternatives, are the most advantageous due to their technology and maturity. Additionally, they are flexible and can be used to replace other materials that conduct electricity with flexible displays of east winds.

Nanosilver has the most important role in Nanosilver. Nanosilver has excellent antibacterial properties and is safe.

"Silver nanowires are being used to replace infrared touchscreen technology in large-scale applications. Du said, "The substitute is already obvious." "The large-size products made of silver nanowires are gaining customers' recognition.

Infrared is a popular touch control technology on the market for electronic whiteboards. Infrared transmitter tube and receiving tube is arranged on the raised border so that infrared optical networks are formed.

The next big flashpoint is 2020

The global smartphone market, with its huge population, has begun to slow. However, the small and mid-sized markets, due to their large base of users, are also vital for silver nanowires technology to become mainstream.

"The smartphone industry needs revolutionary innovation, whether it's facial recognition, the full screen or the hot AI feature," du said. "Whether it is facial recognition, a full-screen, or a hot AI feature, smartphone innovation needs to be revolutionary," du said.For the moment, foldable phones make sense. As screens get bigger, they become more difficult to handle. Foldable screens also offer a new market for product experiences and business model innovations.

The last step to breaking through nanowire

The technology of silver microwires is not widely used. The production, manufacture, storage, and patent of the silver nanowires is considered to be an important factor that limits their development.

It is not possible to replace ITO conductive film with silver nanowires. The future holds the biggest potential for completely new applications.

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What metal can withstand higher temperatures than tungsten

What metal is more resistant to heat than tungsten?

Among all metal elements, tungsten's melting point is the highest, at 3,422 (boiling points 5,930). No metal element is higher in melting point than the tungsten.

Tungsten is element number 74 in the VIB Group of Period 6. Each atom has the ability to form six metal bond.

There are elements that are more resistant to heat than tungsten. Solid carbon, for example, can be heated up to 3,627 degrees c. However, carbon does not have a fixed melting temperature (one atmosphere), because it sublimates between 3627 and 4330 degrees c.

Ta4HfC5 is the heat-resistant material that humans have produced so far. It has a melt point of 4215. It's made from tantalum carbide and hafnium carbide (melting point nearly 4000), both of which have higher melting points than tungsten.

The melting point of a material is dependent on its pressure. The higher the pressure the higher it will be. But when temperature and pressure go beyond critical levels the material becomes superfluid, losing its melting point.
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Molybdenum disulfide nanoelectromechanical system ultra-thin ultra-small ultra-low power consumption

As a two-dimensional typical material, graphene is widely used and highly sought by scientists and industry. What exactly is a 2-dimensional material? Simple, two-dimensional material is a non-nanoscale (between 1 and 100 nm) material in which electrons are able to move freely in two directions (planar movement). Examples of such materials include: graphene; boron nitride; transition metal compounds (disulfide); Molybdenum; tungsten diulfide; tungsten diilicide; black phosphorus.
2D materials can be used in a variety of fields. Combining the introductions of both authors, we can list examples such as: spintronics; printed electronics; flexible electronics; microelectronics; memory processors hyperlenses terahertz supercapacitors solar cells security labels. , quantum dots, sensors, semiconductor manufacturing, NFC, medical, etc.


Molybdenum diulfide, also known as MoS2, is a typical 2-dimensional material that deserves our attention. Molybdenum diulfide, which is composed of two atoms of molybdenum with one atom of sulfur, has only three atoms of thickness. The graphene thickness is similar to molybdenum, but graphene has no band gap. In this respect, the author introduced the fact that the US Department of Energy Berkeley Lab's research team has accurately measured band gap of semiconductor two-dimensional materials molybdenum. disulfide.


In addition, the molybdenum diulfide has an electron mobility that is 100 cm2 /vs. (ie. 100 electrons per centimeter square per volt), although it's much lower than crystal. The silicon has an electron transfer of 1400 cm2/vs but has a higher migration rate than ultra-thin semiconductors and amorphous silica.

Molybdenum diulfide, with its excellent semiconductor characteristics and small size and ultra-thinness, is ideal for transistors, flexible electronic devices, LEDs, Lasers, and Solar Cells.

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Tungsten Oxide Insulation Material Can Make The Sun Room Cool in Winter and Cool in Summer

What is tungsten oxide? Tungsten oxide has a molecular formula of WO3 and a molecular weight of 231.85.
It is a kind of tungstic anhydride, which is a tungstate product. Tungsten oxide includes tungsten trioxide and tungsten dioxide, and there is no tungsten dioxide product in actual industrial production. The tungsten trioxide salt is classified into tungstic acid, sodium tungstate, calcium tungstate, ammonium paratungstate, ammonium metatungstate and the like according to the content of tungsten trioxide.
Tungsten trioxide is a pale yellow triclinic powder crystal. When the temperature is higher than 740 deg C, it turns into an orange tetragonal crystal, and after cooling, it returns to its original state. Stable in air, melting point is 1473 deg C, boiling point is higher than 1750 deg C, relative density is 7.16.
Tungsten trioxide is the most stable one of tungsten oxides. It is insoluble in water and inorganic acids other than hydrofluoric acid. It is soluble in hot concentrated sodium hydroxide solution and ammonia to form soluble tungstate. When the temperature is higher than 650 deg C, it can be reduced by H2, and it can be reduced by C at 1000-1100 deg C to obtain tungsten powder.

Application of tungsten oxide transparent insulation material:
Smart home makes our home life more comfortable, safer and more convenient! It is also energy-saving and environmentally friendly, and it makes our life quite artistic. Therefore, it is not surprising that the smart sun room will appear. The so-called intelligence, one of them is to break the sun room in the summer like a "fire stove", winter like a "refrigerator". The role of this is transparent semiconductor materials, such as tungsten oxide transparent insulation materials, can make the sun room "warm in winter and cool in summer"! In my opinion, it is not the need to install air conditioning and floor heating equipment, it is the best way to solve the heat insulation of the sun room from the root.

Speaking of smart home, this concept has already penetrated our minds, and its application has spread all over the real life! Unfortunately, the author has not been able to live an intelligent life. As a result, the traditional home scene appeared: the author went out every time, and the result went halfway, suddenly remembered something - did I lock the door? Is the air conditioner off? If you don't go back and confirm, you can't live through this day. However, go back and be late for work! Switch to the smart home scenario, how about? ----After leaving the door to lock the door, set the home scene directly to the unmanned state, cut off all the power supply of the terminal block, and confirm the home status at any time through the mobile app. Therefore, the author can not help but sigh, smart home makes people feel at ease, it is so simple!
Switching to the smart sun room is also a similar scenario. Now, some sunrooms use Low-e glass. Some researchers conducted experiments on the near-infrared ray blocking rate and ultraviolet blocking rate of glass coated with nano-tungsten oxide coating, Low-e glass, glass with heat-insulating film, hollow tempered glass and single-sided glass, and found that: 1. The glass of the tungsten oxide nano-coating has an infrared blocking rate of 91%; the ultraviolet blocking rate is 91%. 2. Low-e glass, its infrared blocking rate is 62.8%; UV blocking rate is 56%. 3. The glass with heat-insulating film has an infrared blocking rate of 59%; the ultraviolet blocking rate is 99.7%. 4. Hollow tempered glass, the infrared blocking rate is 34.2%; the ultraviolet blocking rate is 23.5%. 5. Single-sided glass, the infrared blocking rate is 12.4%; the ultraviolet blocking rate is 13.5%.

It can be seen from the above data that the best effect of blocking infrared rays is single-sided glass with nano-tungsten oxide coating; while the effect of blocking ultraviolet rays is single-sided glass with thermal insulation film and with nano-tungsten oxide. Coated single sided glass. However, according to industry insiders, because ultraviolet light has a bactericidal function, and normal people need to take photos of the sun, it is not healthy to have a high UV blocking rate. It is well known that solar radiation provides an energy supply for every life activity on Earth. However, although infrared rays and ultraviolet rays in sunlight are good for the human body, everything is about the amount. Generally, the permeability ratio is about 10%, which is the most scientific. Therefore, from the perspective of energy saving and health, the use of nano-tungsten oxide coated insulating glass is the best.

That is to say, tungsten oxide transparent insulation material is two problems that need to be solved urgently for building energy-saving glass: 1. High transparency means high visible light transmittance and meets lighting requirements; 2. High barrier in the near-infrared band. This blocks the radiant energy of the sun and meets the requirements for reducing energy consumption.
Moreover, as an environmentally friendly water-based heat insulating material, the tungsten oxide transparent heat insulating material only needs to be painted with a thickness of several micrometers, so that it can enjoy the effect of "warm winter and cool summer" without opening the air conditioner. In addition, this kind of insulation material has excellent safety (if this kind of glass is broken, it will not drop a lot of glass slag), anti-aging, privacy protection, stain resistance, self-cleaning, anti-glare, anti-radiation and other functions. . Insulation materials of this type are also tungsten bronze, ITO, ATO, FTO and the like.
Tungsten oxide insulation is not a "black technology" product, but is a product of scientific and technological development. The author believes that in today's advocacy of "energy saving and emission reduction" and "taking the path of sustainable development", such transparent insulation materials will inevitably receive more and more attention.

Tech Co., Ltd is a professional tungsten oxide manufacturer with over 12 years experience in chemical products research and development. If you are looking for high quality tungsten oxide, please feel free to contact us and send an inquiry .

High Purity Germanium Sulfide GeS2 Powder CAS 12025-34-2, 99.99%

Germanium sulfide is a semiconductor material with the chemical formula GeS2. It has a certain solubility in water, easily soluble in hot alkali, and soluble in concentrated hydrochloric acid. Particle size: -100mesh
Purity: 99.99%

High Purity Molybdenum Boride MoB2 Powder CAS 12006-99-4, 99%

Molybdenum powder boride is a combination of molybdenum with boron. The molybdenum is boride has the chemical formula MoB2, and a molecular weight of 202.69. Purity: >99%
Particle size: 5- 10um

Metal Alloy 8.92g/Cm3 High Purity Polished Copper Plate

Copper products exhibit good electrical conductivity as well as thermal conductivity. They are also ductile, resistant to corrosion, and have a high wear resistance. They are widely used by the electricity, electronics and energy industries.

Metal Alloy High Density Tungsten Alloy Rod Grind Surface Tungsten Alloy Bar

Tungsten-nickel-copper/iron alloy is characterized by low thermal expansion, high density, radiation absorption and high thermal and electrical conductivity. It is widely utilized in the aerospace and medical industries.