2023-12-14

Understand the graphitization of lithium battery negative electrodes in 5 aspects

What is graphitization? The so-called graphitization refers to the transformation of non graphite carbon into graphite carbon with a three-dimensional regular ordered structure after high-temperature heat treatment. Originating from the carbon product industry, it is a necessary process for producing graphite electrodes. The graphitization process is aimed at improving the

2022-11-22

Introduce the use of silicon carbide

Silicon carbide has a wide range of uses in industry. Silicon carbide has high hardness and good thermal conductivity. It is a semiconductor that resists oxidation at high temperatures. Although it has many uses, it is not clear to those who have not been exposed to it.1. Application in non-ferrous metal smelting industryThe use of silicon carbide has the advantages of high temperature resistance, high strength, good thermal conductivity, and impact resistance. It is used as a high-temperature indirect heating material, such as solid tank distillation furnaces, rectifier furnaces, aluminum electrolytic cells, copper melting furnace linings, and zinc powder furnaces. Use arc plates, thermocouple protection tubes, etc.2. Application in steel industryTaking advantage of the corrosion resistance, thermal shock resistance, wear resistance, and good thermal conductivity of silicon carbide, it is used in the lining of large blast furnaces to increase the service life.3. Application in metall

2023-03-07

How to turn a graphite block into a carbon increase agent

How to turn graphite blocks into carbon increases Gentle blocks are indispensable in the production process of carbon and graphite products in the production process of carbon and graphite products. Equipment external forces to get rid of the adhesion between the molecular structure of the raw material and break the raw materials. Since then, everyone can divide them into rough, shattered, sophisticated, fine grinding, etc., but they can divide them according to the broken and boring size and their particles. The same industrial production has a broken specification for different industrial production.Today, as far as everyone is concerned, the three crushing levels in the production of graphite products can be divided into pre -fragmentation, medium crushing and fine grinding. The crushing in front of the burning furnace is generally broken up to 50-70mm on the large graphite block of 200mm. The medium crushing means that the particle size is broken after forging. At this moment, the

2023-11-14

Several physical and chemical indicators that need to be understood when selecting graphite materials

Graphite is an allotrope of elemental carbon, where each carbon atom is surrounded by three other carbon atoms (arranged in a honeycomb like pattern with multiple hexagons) that are covalently bonded to form covalent molecules. Due to its excellent properties, graphite is used to make many materials. Below are several physical and chemical indicators that need to be understood when selecting graphite materials:1. Average particle diameter of the materialThe average particle diameter of a material directly affects its discharge condition. The smaller the average particle size of the material, the more uniform the discharge of the material, the more stable the discharge condition, and the better the surface quality. For forging and die-casting molds with low surface and precision requirements, it is usually recommended to use materials with coarser particles; For electronic molds with high surface and precision requirements, it is recommended to use an average particle size of 4 μ Mater

2023-03-22

Let's talk about the basic characteristics of graphite

I. Special seismic resistance: Graphite's expansion gear is different, so the macro expansion coefficient is not large. In the case of sudden changes in temperature, graphite volume has not changed much; coupled with its good thermal conductivity, graphite resistance is excellent.Second, lubrication: The graphite layer is Van Der Waal Forces, which combines weak combination to make it lubricating. The lubrication of graphite depends on the size of the graphite scales. The larger the scales, the smaller the friction coefficient, the better the lubricity.Third, good chemical stability and resistance to erosion: Graphite has good chemical stability at room temperature, not subject to any strong acid, strong alkali and organic solvents; the carbon atom in the graphite layer is firm Combining, the surface of graphite phosphorus can be very low, not moisturizing by melting furnaces, and strong resistance to erosion. However, graphite is prone to oxidation in the air, and anti -oxidation mea

2023-04-03

Three processes Clean up graphite anode board

1. Preparation before work

Fluorine

Can expand graphite development

Graphite crystals have a hexagonal layer -shaped structure composed of carbon elements. The carbon atoms on the layer of flat plane are combined with powerful covalent bonds. Therefore, under appropriate conditions, a variety of chemicals such as acid, alkaline metals, and salt can be inserted into the graphite layer, and a new chemical phase -Graphite Intercities on compounds (referred to GIC). When this intervertebral compound is heated to an appropriate temperature, it can quickly decompose instantly, generating a large amount of gas, so that the graphite is expanded into a new substance of worm -shaped, that is, the expansion of the intervertebral compound of the expansion. graphite.The expansion graphite was first discovered by the German SChaufautl. In 1841, Schaufautl soaked natural graphite in a mixture of thick HNO3 and thick H2SO4. In 1963, he first applied for expanding graphite manufacturing technology patents and industrialized production in 1968.The above is some of the

2023-12-12

The main factors affecting the price of graphite molds are as follows

Will room temperature superconductivity become the next graphene

On July 22nd, a South Korean research team published a paper on the preprint website arXiv, claiming to have synthesized the world's first room temperature and atmospheric pressure superconductor, named LK-99.Superconductivity refers to superconductivity. Under normal temperature and pressure, almost all conductors have resistance, resulting in thermal energy loss during current conduction. Superconductors are materials that can conduct current with zero loss due to the disappearance of resistance, and have complete diamagnetism (internal magnetic induction strength is zero), with advantages such as stability, low loss, and fast transmission.Previously, superconducting materials needed to enter the superconducting state at lower temperatures. The keyword "room temperature superconductivity" mentioned by the Korean team in this paper refers to the phenomenon of superconductivity achieved under room temperature conditions. According to the standards of condensed matter physics