2023-07-06

The research progress of battery material, new battery material

As the core component of new energy vehicles, the performance and stability directly affect the use of the vehicle. Therefore, the development of more secure and environmentally friendly battery materials has become an important research direction for the new energy vehicle industry. The battery is a wide range of energy sources, and now it has become one of the infrastructure of modern life. Compared with traditional batteries, modern batteries have better performance, longer life and smaller size. However, the improvement of this performance is inseparable from the progress of battery materials.1. Research on sodium ion battery materialThe sodium ion battery has become a new type of battery due to rich resources and low cost. The electrode material of the sodium ion battery is similar to the lithium battery, but the ion radius of the sodium ion battery is greater than lithium, which causes the transmission performance of the charge in the material to be greatly reduced. Therefore, t

2023-05-24

Cast iron graphite

The formation process of graphite in cast iron is called graphization process. The basic process formed by cast iron tissue is the formation of graphite in cast iron.The graphite type and size of the gray cast iron depends on the graphite branches and growth rate in the common crystal group. When the common crystal group stops growing, the graphite will stop. They are separated and not connected. Using scanning electron microscope to observe the complete graphite in the common crystal groupThe three -dimensional form indicates that they are connected to each other. Only on the gold phase grinding surface is isolated.The national standard has the following divisions of the graphics of cast iron graphite: type A fine sheet, B -shaped flower shape, C -shaped thick blockbuster, D -shaped dot, E has directional points, f spider -like or planetary. The longest (100 times, greater than 100mm is 100mm. It is called 100mm long). The shortest graphite is the shortest (100 times at 100 times, le

2023-05-17

High pure graphite

High pure graphite generally refers to graphite with carbon content of more than 99.99%. It can be divided into three types: coarse particle structure, fine particles structure, and ultra -fine particle structure in the tissue structure. In the furnace. The basic materials of the integrated circuit are mainly silicon single -crystal chips. The current growth process of silicon single crystal mainly adopts a direct pull (CZ) method. Other methods include the magnetic field direct pull method (MCZ), the area (FZ) method, and the double -yarm pull crystal method Law, the global electronic industry uses straight single -crystal silicon to account for 80% of the total amount of single crystal silicon. The graphite in the direct pull single crystal silicon furnace is consumables. Heating system. In 2005, China needed a straight silicon single -crystal furnace to use about 800 t.Another important purpose of high pure graphite is processed into various types, which are used to produce preciou

2023-02-08

Graphite flotation method

Floating is a commonly used and important mineral method. Graphite has good natural floating. Basically, all graphite can be purified by floating methods. In order to protect graphite scales, most of the graphite flotation uses multiple sections of processes. Graphite flotation collecting agents are generally used for kerosene, with a dosage of 100 to 200g/t. The foaming agent is generally used with pine or butad ether, and the amount is 50 to 250g/t.

What should I pay attention to when applying graphite machinery and equipment

1. Be careful when transporting or hanging. Do not drag and drag it on the ground. Do not pry up or use a galvanized steel wire rope to be tied immediately. Essence2. After the total installation, when welding or oxygen cutting of the steel case, it should be ensured that the safety of graphite and hydraulic sealing should be ensured (water can be injected in the shell), otherwise graphite should be removed.3. When connecting the external flanges, it is not forcibly installed. When the foot bolts are tight, the symmetry is symmetrical.4. The export and export valve of the opening and closing machine equipment should be slow to prevent the significant impact of raw materials.5. The application of materials, temperature and work pressure in applications should be strictly strictly in accordance with the requirements of the design plan.6. For the electric heater, when driving, you should first pass the raw material and pass the vapor; when used as a cooling or cooler, you should first pa

2023-10-17

How is expanded graphite produced?

Due to the fact that graphite is a non-polar material, it is difficult to intercalate with small polar organic or inorganic acids alone, so oxidants are usually required. The chemical oxidation method generally involves soaking natural flake graphite in a solution of oxidants and intercalators. Under the action of strong oxidants, graphite is oxidized, causing the neutral network of planar macromolecules in the graphite layer to become positively charged planar macromolecules. Due to the extrusion effect of isotropic positive charges between positively charged planar macromolecules, the spacing between graphite layers increases, and the intercalation agent is inserted between the graphite layers to form expanded graphite.Expanded graphite will rapidly shrink when heated at high temperatures, with shrinkage times reaching tens to hundreds or even thousands of times. The apparent volume of contracted graphite reaches 250-300 milliliters/gram or more. The shrunken graphite is in the shap

2023-02-22

Graph

Graphite is a raw material that is stable in physical properties, anti -corrosion, and drugs such as acid, alkali and other drugs that is not easy to produce reflected. It is common in the production of processed graphite board, graphite board, graphite anode board, graphite bipolar tablets and other products. Petrochemical equipment, mechanical engineering, electronic device industry chain, China nuclear industry and national defense security are all used in areasBecause graphite can be used to manufacture refractory insulation materials, conductive raw materials, metal composite materials, lubricating liquid, heat -resistant rubber seals, corrosion -resistant raw materials, insulation materials, raw materials, wear resistance and radiation -proof materials, etc.1. Fire. Graphite refractory insulation materials are mainly casting raw materials, magnesium carbon bricks and aluminum graphite refractory insulation materials.2. conductivity. There are also television series graphics card

2023-12-19

Rolling method of graphite plate

2023-07-21

Let's take a look at the use of battery -specific graphite in industrial applications

Battery -specific graphite has good chemical stability. The specially treated graphite has the characteristics of corrosion resistance, good thermal conductivity, and low penetration. Therefore, it is widely used in making heat exchangers, reaction tanks, condenser, combustion tower, absorbing tower, absorbing tower , Cooler, heater, filter, and pump equipment, are widely used in industrial departments such as petrochemical, wet metallurgical, acid -base production, synthetic fiber, papermaking, etc., which can save a large number of metal materials.It is a material for casting, casting, suppression, and high temperature metallurgy. Because of its low heat expansion coefficient, it is resistant to cold and hot, it can be used as a casting mold for glassware. After the graphite is used, the black metal can get accurate size, smooth surface, high finished product rate Casting, can be used without processing or machining, saving a lot of metals. In the powder metallurgical process that p

2023-08-02

Common preparation methods for expandable graphite

1. Chemical intercalation method: the initial raw material for preparation is high carbon flake graphite, and other chemical reagents such as concentrated sulfuric acid (more than 98%), hydrogen peroxide (more than 28%), Potassium permanganate, etc. use industrial grade reagents. The general steps for preparation are as follows: under appropriate temperature, hydrogen peroxide solution with different ratios, natural flake graphite and concentrated sulfuric acid are added in different procedures, and reacted for a certain time under constant agitation, and then washed with water to neutral, Centrifuge separation, dehydrate and vacuum dry at 60 ℃.2. Electrochemical method: Treating graphite powder in a strong acid electrolyte to produce expandable graphite, hydrolyzing, cleaning, and drying. As a strong acid, sulfuric acid or nitric acid is mainly used. This method produces expandable graphite with low sulfur content.3. Ultrasonic oxidation method: In the process of preparing expandable