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Titanium Carbide overview and its application

Titanium Carbide: An Introduction The chemical formula of Titan carbide TiC is a gray, metal-like, solid with a cubic lattice. Its molecular weight (59.89) is also 59.89. The melting temperature of titanium carbide ranges from 3140+90degC to 4820degC. Its relative density is 4,93 and its hardness is higher than 9.
Titanium carbide, while insoluble in water is soluble with nitric acids and aqua regia. It is stable when the temperature is below 800. However, when the temperature is above 2000 it will be corroded.
Carbonized TiO2 or TiO2 powder is produced by heating TiO2 in an electric oven to 2300-2700degC.
Titanium carbide, which can be used as an abrasive and electrode for arc lights and hard alloys can also make it.
Titan carbide can be prepared in several different ways
Reduce carbothermic toxicity using a reduction method
The reaction temperature range for carbon black is between 1700 and 2100 degrees Celsius. The chemical reaction formula:

TiO2(s)+3C(s)=TiC(S)+2CO(g).

Direct Carbonization
Ti powder and carbon dust react to form TiC. The chemical formula of the reaction is: Ti(s),+C(s),=TiC. The application of this method will be limited because it's difficult to make sub-micron Ti powder. The reaction above takes between 5 and 20 hrs to complete. The reactants aggregate, and additional grinding is needed to obtain fine particles. Granular TiC powder. After ball milling, it is important to chemically purify the fine Powder to get a purer product.
Chemical vapor deposition
The method uses the reaction between TiCl4, and H2 and C. TiC The monofilament is soaked with crystals. The TiC produced by this method is subject to strict limitations on output, and in some cases even quality. It is important to be aware that the HCl in TiCl4 as well as its product can be highly corrosive.
Microwave method
Use microwave energy to heat nano-TiO2 and carbon as raw materials. The dielectric loss in the high frequency electric field is used to convert microwave energy to heat energy.
Blast impact method
Preparing the precursor requires mixing the titanium dioxide powder with the carbon powder in a specific proportion. The powder density is set at 1.5g/cm3, the outer cylinder is made of metal, and the laboratory placed inside. It is then placed in an airtight container made by yourself for the experiment. The detonation powder will be collected after the shockwave. After sieving the black powder, impurities like iron filings and large particles are removed. After soaking in aqua regia overnight, the black powder is turned brown. The powder is then placed into a muffle and calcined 400degC (400 minutes) for 400minutes to produce a silver-gray color.

High-temperature self-propagating synthesis
(SHS). SHS is derived by an exothermic process. When heated at the right temperature, fine-grained Ti Powder has a high degree of reactivity. The combustion wave produced after ignition will pass through Ti and the C reactants, and the reaction heat generated by Ti and the C will generate TiC. SHS has a reaction time of less than one second. The synthesis requires fine, high-purity Ti powder for the raw material and output is limited.
Reaction ball grinding technique
The reactive ball milling technique is a method that utilizes the chemical reactions between metal powder or alloys and other elements in the ball grinding process to create the required materials. Reactive ball milling is used mainly to produce nanocrystalline material. The high-energy mill is the primary equipment for nanomaterial preparation. The reaction ball grinding mechanism can be divided in two categories: the first is the mechanically induced high-temperature self-propagation reaction (SHS), while the second is the reaction ballmilling with no obvious exotherm and the reaction is slow.
Titan carbide - Uses
1. Use as an additive for metal bismuth and zinc melting crucibles and to prepare HDD large-capacity memories devices and wear-resistant semiconductor films.
2. This is an essential component of cemented carburide, which is used in the steelmaking process as a oxidizer.
3. As cermet it is known for its high hardness, corrosion-resistance, and thermal stability.
(aka. Technology Co. Ltd., a trusted global chemical supplier & manufacturer has over 12 years experience in providing super-high-quality chemicals and nanomaterials. The titanium carbid Please note that the products produced by our company are of high purity and have low impurity. Please. Contact us if necessary.

2023-08-09

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Is Iron Sulfide Soluble?

Iron sulfide is an insoluble chemical substance with the formula FeS. It is found naturally as the mineral pyrrhotite, troilite and in igneous rocks such as syenites and hematites. It is used as a pigment in hair dyes and ceramics and in glasses and bottles. It is also used in lubricants and anodes, to treat exhaust gases, and as an alloying agent to improve the machine ability of carbon, alloy and stainless steel castings. It is also known to have enzyme-like properties, which suggest a potential for use in biomedical applications.

Pyrophoric iron sulfide may form in vessels, storage tanks and pipelines that have been exposed to asphalt, aromatic tars, sour crude oil, and high-sulfur fuel oils. When the pyrophoric material comes into contact with oxygen, it will react to produce iron oxide, or rust, and sulfur dioxide (SO2). The resulting reaction is extremely exothermic and can cause fires and explosions. To prevent this, pyrophoric iron sulfide is usually kept wet or filled with an inert gas such as nitrogen to prevent the oxidizing reaction from occurring.

Whether or not iron sulfide is soluble depends on its physical and chemical characteristics, the temperature and pressure of the solvent, and the pH of the solution. The solubility of a substance is defined as the saturation concentration (Sc)—the number of moles of the solute that will dissolve in a given amount of solvent at a particular temperature and pressure. Sc values are determined by using X-ray diffraction techniques to measure the structure of the solute and the solvent. The Sc value for a solute will decrease as the concentration of the solute increases, but it will never reach zero.

2023-08-08

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How useful is the new MAX phase ceramics?

What is MAX phase? MAX phase (including Ti3SiC2, Ti2AlC , etc.) It is a newly developed machinable material. This material contains over fifty types of ternary carbides and nitrides. M represents a metal transition element; A represents an element of the main group; and X represents either nitrogen or carbon. The basic chemical equation can be written as M(n+1).AXn. Ti3SiC2 was the most studied.

How can MAX phase materials synthesized be?
The hot pressing method was used by the Drexel University, Drexel, in the United States to synthesize Ti3SiC2. This material has excellent properties. The unique nano-layered crystalline structure of this material gives it properties like self-lubrication, high toughness and conductivity. They can be used for high-temperature structure materials, electrode brush material, chemical anticorrosion material, and high temperature heating materials. In Japan, Europe and China, extensive research has been carried out on this material type since 1996.

Nb2Alc powder: introduction
This is a new type conductive ceramic material, Nb2Alc is one. This ceramic is composed of more than 60 ternary compounds or nitRIDEs. A is a group element, usually elements in the third or fourth group; X is carbon or nitrogen. Niobium Aluminum Carbide, or NBC, is a new ceramic material that combines metal and ceramic advantages. Nb2Alc has excellent mechanical characteristics at high temperature.

How is Nb2AlC produced?
1. Mix niobium, aluminum, and carbon powders and weigh them;
2. To obtain Nb2AlC powder, put the mixed powder in a graphite can, fill it with an inert gas and ignite it. After that, you will need to pulverize it, cool it, sieve it, and then dry it. The method provides a fast reaction time, a short synthesis period, low energy consumption and low costs, as well as high production efficiency. The Nb2Alc Ceramic Powder obtained by this invention can be applied in the aviation, electronics, nuclear, and aerospace industries.

Nb2AlC powder: Storage conditions
Group gathering can affect the dispersion and use the Nb2AlC Powder. The niobium aluminium carbide Nb2AlC should be kept in a vacuum-sealed package in a cool, dry place. Niobium aluminum carburide is not suitable for use. Expose the powder to air. In addition, avoid using Nb2AlC powder under stress.

Prices of MAX Phase Powder
(aka. Technology Co. Ltd., a trusted global chemical supplier & manufacturer has over 12 years experience in providing high-quality Nanomaterials and chemicals. Currently, we have developed a successful series of powdered materials. Our OEM service is also available. If you're looking for MAX phase Contact us for more information about powder. Please click here to order powder. Needed products Send us a request.

2023-08-08

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What are the Main Application Areas of Boron Carbide

What is Boron Carbide?

Boron carburide (also known as black diamand) is a substance that has the molecular formula B4C. It's a gray-black fine powder. It is among the three hardest substances known (the two others being diamond and cubic boron-nitride). Tank armor, bulletproof vests and a variety of industrial applications use it. Boron carbide absorbs a lot of neutrons but does not produce radioisotopes. This makes it an ideal neutron absorption material for nuclear power plants. Neutron absorbers are used to regulate the rate of nuclear fusion. Boron carbide, which is used in nuclear reactors, is mostly made into a controlled rod shape. But sometimes it's made into powder due to the increased surface area.

What are the main applications of Boron Carbide?

(1) The field is national defense. Bullet-proofing has been done with boron carbide ceramics since the 1960s. Comparing it to other materials, its characteristics are easy portability and high toughness. It is a key component of the lightweight armor used on armed helicopters as well as the bulletproof aircraft armor. The British used this material as a raw materials to manufacture armor that can protect against armor-piercing projectsiles.

(2) In terms of raw chemical materials. To increase the wear-resistance and strength of alloys, boron carbide is used as an alloy boronizing agent. This can be done by boronizing the metal surface and generating a thin layer iron boride.

(3) Wear-resistant field. Boron carbide ceramics are visible in a number of industrial nozzles. These include desander nozzles to remove rust and nozzles designed for high-pressure water gun cutting. They are often chosen by factories for their durability under extreme conditions, and cost-effectiveness. . It can also be used to avoid pollution due to abrasive waste during grinding. As a diamond abrasive substitute, boron carbide can be used to reduce the cost of processing various metals as well as jade glass.

(4) Nuclear energy. boron-carbide is commonly used as a neutron absorber in safety rods, control rods and other components. This helps to regulate the rate of nuclear fusion and ensure human safety.

(5) Aviation. The gyroscope in the navigational system of an aircraft is an essential component. Boron carbide can increase the life of this gyroscope by adding it to the material.

(aka. Technology Co. Ltd., a trusted global chemical materials supplier & manufacture with more than 12 years experience in providing super-high quality chemicals and Nanomaterials. The powder that we produce is of high purity with fine particles and low impurity. If you need lower, please call us.

2023-08-08

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Six classifications and applications of graphite

Graphite is classified into six categories and has many applications.
Graphite is abundant in my country, and it's widely distributed. However, many of the small and medium-sized mineral resources are found there. Private small graphite miners have operated in my country, and graphite products are of low added value. After many years of hard work, my country has invested in a large amount of money and technical and scientific personnel. The graphite reserves of my country have been used more efficiently after the reorganization and improvement of the graphite use. Graphite has been developed in my country as high-purity graphite.
1. High purity graphite
High-purity Graphite (carbon contents > 99.99%) can be used to stabilize military industrial pyrotechnics materials, advanced refractory material in the metallurgical sector, Chemical fertilizer catalysts, additives etc.
2. Isostatic Graphite
The graphite used to make isostatic graphite comes from high-purity material. It has a low coefficient of thermal expansion, good heat resistance and chemical resistance. In the past fifty years, isostatic graphite has become a world-first product. It has not only achieved great success in civil applications, but also holds a prominent position in cutting-edge national defense. This is a brand new material, which is also eye-catching. It is mainly used for the following aspects.
(1) Heater to heat polysilicon ingots
As a result of the global warming, the awareness among humans to protect the Earth has increased. More and more people now prefer natural energy that does not emit carbon dioxide. In this trend, solar cell technology has become a "darling" in the new age. The ingot heater that is used during the manufacturing process must be made out of graphite.
Nuclear fission (high temperature gas-cooled) reactor
In order to meet the requirements of graphite as a moderator for high-temperature nuclear reactors that use gas cooling, it must be resistant to deformation and radiation stress. Therefore, a modular high temperature gas cooled reactor has been proposed. Modern ultra-high temperature reactors are characterized by high power density at high temperature. This raises the bar for new graphite materials. They must be of good quality, low cost, have a high radiation damage tolerance and homogenize the product.
Nuclear fusion reactor.
Graphite's special properties also play an important role in nuclear fusion. It can greatly reduce the metal particles in the material's plasma, and therefore plays an important role in improving energy confinement. As nuclear fusion devices expand, graphite wall materials that have high mechanical and thermal strength are the best choice for the first material to face the plasma. These materials also show a good discharge pulsation effect. Because graphite is low in atomic numbers and has low radiation losses, it can be mixed with plasma to keep it stable.
(4) Electric discharge machining electrode.
In the electrodes for electric discharge machining, graphite electrodes offer many advantages. Although graphite is a good material, it has some drawbacks. For example, dust and wear can occur during cutting.
3. Expandable graphite
Also known as acidified or flake graphite. It is made from high-quality graphite. Expanded Graphite offers many advantages, such as high-temperature resistance, high-pressure resistance, good seal performance, and corrosion resistance for various media. It is a type of advanced seal material. It is mainly applied in the following areas.

(1) Environmental protection as a field.
The hydrophobicity and lipophilicity of expanded graphite allows it to selectively remove nonaqueous solutions in water. This feature is commonly used to remove slicks of oil from the sea surface. A large amount of oil can be absorbed by this product due to its molecular composition. It can be aggregated in blocks and float on water. After oil removal, it can also be recycled or reused. Expanded graphite, in addition to its selective adsorption, has an inhibitory impact on air pollution. This includes the adsorption and removal of carbon dioxide.
Sealing Material
The flexible graphite made of expanded graphite is used to seal materials.
4. Graphite fluoride
Graphite fluoride, a high-tech material with high-performance and high-efficiency, is currently being researched around the globe. It has excellent quality and performance, and is widely used as a functional material.

(1) It is used as a releaser.
Graphite-fluoride has a low surface energy, which makes it a good release agent for metal moulds.
Solid lubricants.
Fluorinated Graphite, with its low interlayer energy and low surface energy as well as good chemical and thermal properties, has outstanding lubricating characteristics and is ideal for harsh conditions like high temperature, pressure, corrosive materials and high load.
Batteries Raw Materials
It is very difficult to use fluorine in the active material of batteries that contain fluorine-lithium, because fluorine gas can be poisonous. Fluorinated Graphite is used for its excellent electrochemical properties when mixed with organic electrolytes. This makes it a popular material in the integrated circuit memory of cameras, computers and watches.
5. Colloidal graphite
One of the main features of colloidal graphite is its lubricity. The colloidal film of graphite has an excellent thermal insulation in the vertical direction. It is used widely in turbine propellers and hot steam cylinders. It is used to reduce static electricity in the electronics industry.
6. Graphene
Graphene has a hexagonal honeycomb-like lattice made of carbon atoms, and sp2 hybrid orbitals. This is a two-dimensional, one-atom thick material. It is the most durable and hard nanomaterial ever found.
The special arrangement of its atomic structure has made it widely used.
(1) According to ultra-thin Graphene (single layer graphene almost transparent; its molecules are tightly packed, so that even the smallest of helium atoms can't pass through), the strength is super strong, and it can be used in ultra-light armors, ultra thin and ultra light aircrafts, etc. .
(2) Its conductive atoms have a much higher speed than electrons that move in metal conductors. It can be made into graphene conductor agent.
The rapid movement electrons of this material, which is conductive, allows for its use in the future as a replacement for silicon, such as in curved mobiles, photon sensors, and supercomputers.
Researchers have found that bacteria cannot grow on graphene but human cells do not get damaged. Take advantage of it; graphene is great for bandages, packaging food, etc.

Tech Co., Ltd. is a professional manufacturer of graphite with more than 12 years' experience in research and development for chemical products. You can contact us to send an inquiry if you need high-quality graphite.

2023-08-08

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The Bayer Process-The Main Production Method of Alumina

Alumina Bauxite is an oxide of aluminum that is stable. It's also used in ceramics, material science and mining. The rapid development of our country’s electrolytic aluminium, ceramics industries, medicine, electronics and machinery will increase the demand for alumina.
There are a number of methods to extract alumina from ores, such as Bayer, soda-lime-sintering, combined Bayer and sintering, etc. The Bayer Process was the primary method of producing aluminum, accounting for approximately 95% the total world alumina output. Although the acid method made huge progress in the 1970s it was not used by industry.

Bayer process for producing alumina

The Austrian Bayer K.J. Bayer invented it in 1888. The principle is that caustic (NaOH ) solution is used to warm and dissolve the alumina in the bauxite, resulting in sodium aluminate. After the solution (red mud) is separated, the temperature of the mixture is lowered and aluminum hydroxide added as a crystal seed. After long stirring, sodium aluminate separated into aluminum hydroxide. Then, it washed off and calcined in a temperature range of 9501200. The alumina is obtained. Mother liquor is the solution that remains after the precipitation of aluminium hydroxide. This is recycled following evaporation.

Because gibbsite and diaspore are different in their crystalline structure, they will dissolve at different temperatures. The gibbsite-type bauxite dissolves at 125140°C, while the diaspore-type bauxite dissolves at 240260°C with lime (37%).

Bayer Process Alumina Products: Benefits

The Bayer Process is a modern process that has made major progresses in:

1. Equipment of large scale and continuous operation
2. Automation of production processes;
3. Energy-saving techniques such as fluidized roasting, high-pressure enhanced disolution and high pressure enhanced dissolution;
4. Production of sandy alumina for aluminum electrolysis, and the need for flue gas purification. Bayer's advantages

The economic effect of the Bayer Process is determined by the quality of the bauxite, mainly the SiO2 content in the ore, which is usually expressed by the aluminum-silicon ratio of the ore, that is, the weight ratio of the Al2O3 to the SiO2 content in the ore. Because in the dissolution process of the Bayer Process, SiO2 is transformed into sodalite-type hydrated sodium aluminosilicate (Na2O*Al2O3*1.7SiO2*nH2O), which is discharged along with the red mud. The Bayer Process will generate about 1 kg of Al2O3 for every kilogram of SiO2 present in the ore. This is followed by 0.8 kg of NaOH. The Bayer process has a worse economic effect the lower the aluminum-silicon bauxite ratio. The Bayer Process produced bauxite with an aluminum-silicon mixture greater than 8 until the late 1970s. In order to make the most of low-grade gibbsite bauxite and develop new energy-saving technology, research and development has been focused on how to utilize other types of low grade bauxite.

(aka. Technology Co. Ltd., a trusted global chemical supplier & manufacturer has over 12 years experience in providing super-high-quality chemicals and nanomaterials. The Aluminum Oxide The products produced by our company are high in purity, have fine particles and contain low impurities. Contact us if you have any questions.

2023-08-08

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Study on the requirement of organic primer for titanium dioxide in the plastics industry

As a white pigment filler of high quality, has many applications, including in plastic profiles, colormasterbatch, paints, emulsions paints, powders paints for paper making, cosmetics and chemical fibers. It can be used with both the solvent and water systems. The different application and application systems have additional requirements in selecting organic coatings agents. Traditional TMP and peg are no longer sufficient to meet these requirements. They also have some negative effects, like the bubble problem. In order to achieve an acceptable treatment effect for the application, it is important to use different organic treating agents according to the different USES (applications) of titanium dioxide. In addition to the different USES for titanium dioxide, there are also differences in titanium dioxide application performance requirements.
Plastics - Requirements on titanium dioxide
1. High viscosity extrusion/dispersion lubricant
As plastic products become stronger and cheaper, they add more color filler. However, as the resin proportion decreases and compatibility between components becomes more challenging, it can cause the surface to be rough and uneven in color. Consider the colormasterbatch that is commonly used in plastics: it's made by extrusion of titanium dioxide and granulation after being kneaded with high temperature organic resins such as polyethylene wax or high-pressure polyester. It is necessary to use the least amount of carrier resin to moisten the most titanium dioxide possible in order to achieve a high-concentration white masterbatch. This will avoid low resin compatibility when applied. In order to produce masterbatches, titanium dioxide must have excellent wettability on the surface and excellent lubrication. If not, it is difficult to granulate or disperse.

2. Temperature/weather Resistance
Before processing or forming, the vast majority of plastics products, regardless of their type, processing method or resin, must be in high-temperature melt with titanium dioxide and additives. Processing temperatures for plastics are around 200 degrees, or higher. The decomposition of some components at this temperature will cause pigment migration, porosity and a serious impact on the physical strength and surface quality of plastic products. Each component of the formula should have excellent temperature resistance. For plastics used outdoors or in a healthy light environment (such plastic films, electrical appliances, etc.) UV resistance should also be taken into consideration. In PVC products, a stabilizer containing lead is added. This type of stabiliser is easily reacted with other active chemical substances at high temperature and produces black substances. Lead stabilizers cannot react with organic coating agents on titanium dioxide surfaces.

3. Dry Powder Fluidity/Moisture Resistant
As more and factories adopt continuous production line for plastics, raw materials related to it (like resins, fillers or pigments) are also metering continuously using transmission belts. Imagine that the flow rate of titanium dioxide dry is low. The powder will then get stuck in the belt of the transmission or block the screen hole. This can lead to titanium dioxide not being accurately measured or added smoothly.

( Tech Co., Ltd. ) is an Titanium oxide professional manufacturer with 12 years' experience in chemical research and product development. Contact us to send an inquiry if you are interested in high-quality Titanium oxide.

2023-08-08

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Magnese Dioxide MnO2 Powder Properties And Applications

Manganese dioxide This inorganic compound has the chemical formula of MnO2, and is either a black amorphous or orthorhombic powder. Manganese dioxide can be used as a rust remover, an oxidant or in the preparation manganese sulfates.
Magnesium Dioxide Powder Properties
Manganese oxide is not soluble in water, weak acid or base, nitric acids and cold sulfuric acid. However, it can be dissolved in concentrated hydrochloric solution heated to produce chlorine gas.

Manganese dioxide is a compound with an octahedral crystal structure. The oxygen atoms on the corners are the manganese atoms. The manganese is in the octahedrons. The octahedrons form a chain by connecting them together. These chains, along with other chains, are placed on top to form a structure of voids. The octahedron may be either hexagonally or squarely packed.

Manganese dioxide, also known as amphoteric iron oxide, is a very stable black powdery solid at room temperature. At room temperature, it is a powdery black solid. It can also be used as a dry battery depolarizer. In the laboratory its oxidizing qualities are often used by HCl to produce chloride.

Magnesium Dioxide MnO2 powder applications
Manganese dioxide can be used to depolarize dry batteries. It is also used as an oxidant, catalyst, colorant, and deironing agent for the glass and enamel industries. Manganese dioxide can be used to make metallic manganese as well as special alloys, gasmasks and ferrites.

Manganese oxide can be used in rubber to increase viscosity, as well as in chemical experiments.

Laboratory Use
Manganese dioxide can be used as a catalyst for the breakdown of hydrogen peroxide in order to produce oxygen.
The MnO2 powder acts as a catalyst when potassium chlorate is heated to cause it to decompose, releasing oxygen.
Thermite reacts with manganese oxide and aluminum powder to form manganese.
MnO2 Powder is used for yellow glass, as a pigment.
When manganese oxide reacts with hydrochloric acid heated to a concentrated state, it produces chlorine.
When manganese oxide reacts with molten potassium hydroxide in the air, it produces potassium manganate.
Manganese oxide acts as an auto-catalyst in the decomposition of potassium permanganate.

Tech Co., Ltd. is a professional oxide powder We are a chemical product supplier with 12 years of experience. We accept payment by Credit Card, T/T (West Union), Paypal and T/T. The goods will be shipped to overseas customers via FedEx or DHL.

You can contact us for high quality Manganese Dioxide Powder. Contact us Send an inquiry.

2023-08-08

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Carbon-Coated Silicon Material: an Ideal Anode Material for Lithium Batteries

Problems Facing Silicon Carbon Material System

Silicon possesses an ultra-high theoretical capacity for lithium insertion, approximately ten times greater than carbon materials. It has many advantages, including a low price, abundant sources, and a platform that is similar to graphite. Silicon will, however, produce volume changes of >400% during the deintercalation process of lithium. This will lead to pulverization, loss of contact between the current collectors and the conductive agents, and rapid degradation of capacity. In addition, the SEI membrane on the silicon surface is unstable and severely limits the cycle life.
The lithium ions diffuse into the silicon particle, which reduces the active material's lithium insertion capability. Selecting nano-scale silicon particle can also reduce material powdering. This will improve capacity. Nanoparticles, however, are easily agglomerated, and they have little effect on the thickening SEI films. In the current silicon anode technologies, they are focusing on two key problems: "volume growth" and "conductivity", which occur during the charge-discharge process. As far as anodes are concerned, the carbon materials used in silicon anodes to form conductive and buffer layer are crucial.

The nanometerization process can enhance the performance of silicon anodes. To reduce the cost of manufacturing nano-silicon material and to stabilize the SEI film on the surface of silicon materials, a variety of materials with good intrinsic conductivity are used to combine with silicon. Carbon materials are among the materials that can both improve the conductivity on silicon-based anodes and stabilize the SEI films.

There is no carbon or silicon material that can simultaneously meet the needs of modern electronics for energy density and cycle lifetime. The fact that carbon is a member of the same chemical group as silicon, and has similar properties to both, makes it easy to recombine them. The composite material of silicon-carbon can be used to complement both the benefits and shortcomings of each material. It also allows for a material with a much higher gram and cycle capacity.

The reduction of particle size in the electrode material has the additional purpose of increasing the ionic rather than electronic conductivity. As the particle size is reduced, the diffusion path of lithium ions is also shortened. This allows the lithium ion to quickly participate in electrochemical reactions, during charge and discharge. For the enhancement of electronic conductivity there are two methods. One involves coatings of conductive material and the second is doping. This is done by producing mixed valences states to increase the intrinsic conductivity.

Carbon-Coated Silicone Material

Scientists developed a plan for using carbon to wrap silicone as a negative electrolyte material in lithium batteries. They did this by synthesizing the electrochemical characteristics of carbon and silica. In experiments, scientists found that silicon coated with carbon can boost the material's performance. Preparation methods for this material include hydrothermal method CVD, and coating carbon precursors to silicon particles. The array of nanowires were prepared by metal catalytically etching the silicon plate. They then coated the surface with carbon using carbon aerogel and Pyrolysis. The initial discharge capacity of this nanocomposite was 3,344mAh/g. After 40 cycles, the capacity was 1,326mAh/g. The material's excellent electrochemical performance is due to its good electronic conductivity, contact between silicon and carbon materials, and effective inhibition of volume expansion by the silicon materials.

The Development Prospects

The Carbon-coated Silicon material is an ideal anode material for lithium batteries. It combines high conductivity, stability and capacity of silicon with the advantages of carbon.

(aka. Technology Co. Ltd. (aka. Our silicon powder is high-purity, with fine particles and low impurity. If you need lower, please Contact us.

2023-08-08

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Catalyst Iron Carbide with Broad Application Prospects

Iron Carbide Features

Iron carbide has high conductivity and electrochemical performance. It is considered to be the next-generation of anode material for lithium-ion batteries. It is also characterized by high hardness and stability. This allows lithium-ion batteries be used in extreme conditions.

Transition Metal Carbide Nanostructures Attract Attention

The nanostructures of the transition metal carbides have received much attention in recent years. This is especially true for iron carbide nanomaterials due to their excellent stability, high catalytic efficiency, and good biocompatibility. Features: Has important applications in the fields such as nanomagnetism and Tropsch catalysis (Tropsch), electrochemical energy storage conversion, and medicine. However, the commonly used methods of preparation, such as the solid-phase reaction and sonochemical methods and sol-gel, are often agglomerated and have difficulty controlling phase.

Iron Carbide Catalyst: Application

Zhao Yujun and his team from Tianjin have made great progress using Fe5C2 catalysts in the DMO system to produce alcohol. The researchers developed an innovative hydrogen and mixed gas carbonization, and then obtained a relatively durable iron carbide catalyst mostly composed of Fe5C2 within a reaction atmospheric.

Further studies found that the DMO hydrogenation reaction route using Fe5C2 was different from that of copper-based catalysts, in part because Fe5C2 could selectively activate -OH on the intermediate product methylglycolate (MG), such that adding hydrogen produced methylacetate (MA) rather than ethylene glycol on copper-based cats. MA can be further hydrogenated on Fe5C2 with high selectivity to produce alcohol. Fe5C2 did not have significant CC bond-breaking activity. The higher reaction temperature (260 degrees Celsius) resulted in a 90% ethanol production, while the main by-products were MA. Fe5C2 catalysts are clearly superior to copper-based catalysts in terms of performance.

(aka. Technology Co. Ltd., a trusted global chemical materials supplier & manufacture with more than 12 years' experience, is a trusted source for super-high quality chemicals & Nanomaterials. Our Iron carbid has a high purity, fine particles and low impurity levels. If you need lower, please call us.

2023-08-07

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