The new development of overseas universities is that boron nitride coating can extend battery life and ensure battery safety

There are four different variants of boron nitride powder: Hexagonal Boron Nitride (HBN), Rhombic Boron Nitride (RBN), Cubic Boron Nitride (CBN) and Wurtzite Boron Nitride (WBN). The boron nitride that is usually produced has a graphite-type structure, which is commonly referred to as white graphite.

According to reports, improving battery energy storage capacity, extending battery life and ensuring safe battery operation are becoming more and more important. This also poses a challenge for us, because everyone is increasingly dependent on equipment that requires mobile devices and electric vehicles. equipment. Such energy. However, on April 22, 2019, an overseas university engineering team led by Yuan Yang, assistant professor of materials science and engineering, announced that it has developed a new method to stabilize by implanting boron nitride (BN) nano-coatings. Solid electrolyte in lithium metal batteries to extend battery life.

Currently, conventional lithium-ion batteries are widely used in daily life. Such batteries have low energy density, resulting in short lifespan, and may also cause short circuits or even fire due to the highly flammable liquid electrolyte inside the battery. The use of lithium metal instead of graphite anode in lithium-ion batteries will increase the energy density of the battery; theoretically, the charging capacity of lithium metal is nearly 10 times that of graphite. However, in the process of lithium plating, dendrites are easily formed. If the dendrites penetrate the separator in the middle of the battery, a short circuit may occur, which may cause potential safety hazards to the battery.

Most solid electrolytes are ceramics, so they are not flammable, eliminating safety hazards. In addition, the solid ceramic electrolyte has high mechanical strength and can actually inhibit the growth of lithium dendrites, so that the lithium metal can become the negative electrode coating of the battery. However, most solid electrolytes are unstable to lithium ions and are easily corroded by lithium metal and cannot be used in batteries.

In response to these challenges, the research team worked with Brookhaven National Laboratory and the City University of New York to deposit 5 to 10 nm boron nitride (BN) nano-films as a protective layer to isolate the electricity between the metal lithium and the ion conductor. contact. (Solid electrolyte), add a small amount of polymer or liquid electrolyte to penetrate the electrode/electrolyte interface.

Overview of boron nitride

Boron nitride industrial powder is a pure white ceramic material with a hexagonal crystal structure similar to graphite.Boron nitride can withstand temperatures exceeding 2,000°C,and depending on the grade,its dielectric strength is close to 1000 volts/mil.Boron nitride is hot-pressed in the form of billets,which can be easily processed into rods, bars,plates and even customized shapes .

Application of boron nitride

1.Release agent for metal forming and lubricant for metal drawing.

2.Special electrolysis and resistance materials in high temperature state.

3.High-temperature solid lubricants,extrusion anti-wear additives,additives for the production of ceramic composite materials,refractory materials and antioxidant additives,especially in the case of corrosion resistance of molten metals,heat-enhanced additives,high-temperature insulation materials.

4.Heat-sealing desiccant for transistors and additives for polymers such as plastic resins.

5.Pressed into various shapes of boron nitride products,which can be used as high temperature,high pressure,insulation and heat dissipation parts.

6.Thermal shielding materials in aerospace.

7.With the participation of catalysts,it can be converted into cubic boron nitride that is as hard as diamond after high temperature and high pressure treatment.

8.The structural materials of the atomic reactor.

9.Aircraft,rocket engine nozzle.

10.Insulator for high-voltage and high-frequency electricity and plasma arc.

11.Packaging materials to prevent neutron radiation.

12.The superhard material made by boron nitride processing can be made into high-speed cutting tools and drill bits for geological exploration and oil drilling.

13.Separation ring for continuous cast steel in metallurgy,flow slot for amorphous iron, release agent for continuous cast aluminum(various optical glass release agents)

14.Make all kinds of evaporation boats for capacitor film aluminum plating,picture tube aluminum plating,display aluminum plating, etc.

15.Various fresh-keeping aluminum-plated packaging bags,etc.

16.All kinds of laser anti-counterfeiting aluminum plating,brand hot stamping materials,all kinds of cigarette labels,beer labels,packaging boxes,cigarette packaging boxes,etc.

17.The filler used in cosmetics for lipstick is non-toxic,lubricating and shiny.

In terms of optical applications,due to the high hardness of the c-BN film and the high transmittance of the entire wavelength range from ultraviolet(from about 200 nm)to far infrared,it is suitable as a surface coating for some optical components, and is particularly suitable as Coating of window materials such as zinc selenide(ZnSe)and zinc sulfide(ZnS).In addition,it has good thermal shock resistance and hardness,and is expected to become an ideal window material for high-power lasers and detectors.

The price of boron nitride

The price of boron nitride will vary randomly with production costs,transportation costs, international conditions,and market supply and demand of boron nitride.Tanki New Materials Co. Ltd aims to help all industries and chemical wholesalers find high quality by providing a full set of customized services,Low-priced nanomaterials and chemicals.If you are looking for boron nitride,please feel free to send an inquiry to get the latest price of boron nitride.

Suppliers of Boron Nitride

As a global boron nitride supplier,Tanki New Materials Co.Ltd has extensive experience in the performance,application and cost-effective manufacturing of advanced and engineered materials.The company has successfully developed a series of powder materials(titanium nitride,nitride Silicon,titanium nitride,etc.)high-purity targets,functional ceramics and structural devices, and provide OEM services.