2023-06-05

Modified graphite

A new generation of lithium -ion battery negative materials with good graphite performance and low price1. High graphitization and stable structure.2. High capacity and stable charging and discharge.3. Good reversibility, which can effectively improve the utilization rate of positive and active substances.4. Good cycle stability.5. Good performance, safe and reliable.Modified graphite can be used for lithium -ion battery negative electrodes, ball -type modified graphite can be used as lubricant, and can be made into graphite modified polypropylene plastic, which is used to make zero, pipeboard, head, flang, flang, and take -off. Components (good corrosion resistance; small volume, light weight; high temperature resistance; non -toxicity, no scaling, non -polluting medium, can also be used for the food industry)

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

2023-09-25

graphite expansion graphite environmental materials

The effect of expanding graphite on water pollution has a large number of research results. In terms of governing oil and organic pollution in the control of water bodies, expansion graphite is far more effective and economical than ordinary activated carbon now. But expansion graphite is inconvenient to transport and needs to be prepared at the application site. The preparation, use, recycling, and regeneration of expansion graphite environmental protection materia

2023-06-20

The effect of battery specific graphite as negative electrode on the fast charging performance of lithium-ion power batteries

Since its inception, lithium-ion batteries have been widely used in multiple fields. At present, lithium-ion batteries are not only widely used in electronic products such as mobile phones, digital cameras, and tablets, but also in the application of car power supplies. Achieved certain breakthroughs; From the analysis of market economic demand for the future development of lithium-ion batteries, it can be seen that fast charging lithium-ion batteries will become an important research direction for lithium-ion batteries.In order to improve the fast charging performance of graphite negative electrode materials for batteries, a series of graphite negative electrode materials made of different coke materials were prepared through experiments. And particle size, polarization, and XRD tests were conducted, resulting in a lithium ion battery charge rate and charge rate. Loop testing and analysis of test results.Analysis of the fast charging mechanism of lithium-ion power batteries and the i

2024-04-23

Graphite, the imprint of time

Graphite is a mineral that has undergone the baptism of time. With its unique black color, it tells the story of billions of years. Each piece of graphite is like a heavy history book, recording the changes of the Earth and the traces of time. It witnesses the ups and downs of mountains and rivers, the rushing of rivers, as well as the proliferation of life and the rise of civilization.Graphite is not only a witness to history, but also a inheritor of civilization. From ancient writing tools to modern industrial materials, graphite has always accompanied the progress of human civilization. It provides endless convenience for people's production and life with its stable performance and excellent quality.Graphite is the imprint of time and the crystallization of human wisdom. It makes us feel the wonder and greatness of nature, and also makes us cherish and cherish this land more.

2023-10-16

Causes of impure expandable graphite powder

1. The purity of high-purity graphite in the selection of production raw materials is immediately related to the ash content of the selected raw materials under the same production conditions. Civil expandable graphite products have the following pattern: those with high ash content in raw materials also have high ash content in their products. Therefore, the ash content of petroleum coke selected for the production of nuclear high-purity graphite is specified in the mouth. Below 15%, although the boron composition is required, analysis will be conducted, and the specific data information is all in 0. 5pp. Below. The total ash content of the product was divided into 5 parts in ppm, with boron content in the parts. The thermal neutron absorption cross section of the LPPM is 3. Eight times three. 94 millibars.2. The high temperature quenching and tempering treatment and other halogenation solutions have a fundamental impact on the removal of ash, as well as whether or not halogenation s

2023-05-22

Artificial graphite characteristics

Crystal structureNatural graphite: Crystal development is relatively complete, the graphization of scales graphite is more than 98%, and the graphitization degree of natural micro -crystal graphite is usually below 93%.Artificial graphite: The degree of crystal development depends on raw materials and thermal treatment temperature. Generally speaking, the higher the thermal treatment temperature, the higher the graphite. The artificial graphite produced by industrial production is usually less than 90%.Organizational structureNatural scale graphite: It is a single crystal, which is simpler in the tissue structure. There are only shortcomings in crystalline learning (such as defects, wrong positions, errors, etc.). The grains of natural micro -crystal graphite are small, the clutter between the grains is arranged, and there is a hole after the removal of impurities, which shows the same sex in the macro.Artificial Graphite: It can be regarded as a variety of materials, including graphi

2023-07-19

What are the advantages of high pure graphite?

Simplified graphite is an inorganic non -metallic material. High -pure graphite is a common advantage in processing and manufacturing structure casting molds, exercise of high -pure metal, sintering mold, metal coating, and transmitting electron tube. High pure graphite has corrosion resistance, the substrate is uniform and small, delaying the degree of corrosion of the product. In addition, it also has high thermality. High -content fixed carbon ensures good thermal conductivity, shorten the dissolution time, and significantly reduces energy consumption. In particular, its quality stability, the manufacturing technology and quality assurance system of high -voltage molding methods fully ensure quality stability. If graphite molds and graphite processing products of various shapes and uses can be achieved in the metallurgical industry, graphite with accuracy and roughness can be processed. High -pure graphite is specially designed according to the conditions of rapid heating and fast

2023-04-21

What should be paid attention to when processing refractory materials with flake graphite?

Introduction to the use of expansion graphite

The expansion graphite was discovered in the early 1960s. Many countries like to use it to study, so that many unexpected results can be achieved. The so -called expansion can be increased by more? That's right, more than double or even double! It is new carbon material! Many people don't know much about expansion graphite!Graphite crystals are two -way large -molecular layer -like structures. The C atom in each plane is combined with the C -C co -price bond, and the layer is combined with weaker Van Dehua.The layered structure of graphite is very typical. Each layer is a carbon atomic layer. The carbon atom in the layer is a strong covalent bond with SP2 hybrid orbit, that is, 1 2S electronics and 2 2P electronic hybridization, etc. The hybrid track of the price is located on the same plane and forms σ bonds each other, while the two unsteady 2P electrons are perpendicular to the plane to form a two -key π. This layered structure of graphite makes a certain gap between layers. Theref