news
-
MoreWhat is graphite？
Graphite material is mainly composed of polycrystalline graphite, which is an inorganic non-metallic material, but it is called semi-metal because of its good thermal and electrical conductivity. Graphite has higher thermal and electrical conductivity than some metals, and at the same time It has a much lower coefficient of thermal expansion than metals, a high melting point and chemical stability, which makes it of important value in engineering applications. Graphite has good corrosion resistance and does not react with any organic compounds.
2020-12-24 -
More
The Properties And Application of expanded graphite
Expanded graphite is an adsorbent with excellent performance, especially it has a loose porous structure and strong adsorption capacity for organic compounds. 1 g of expanded graphite can absorb 80 g of petroleum, so expanded graphite is designed to be a variety of industrial greases and Adsorbent for industrial oils.
2020-11-30 -
More
The structural composition and physical and chemical properties of graphite
Graphite is a transition type crystal between atomic crystals, metal crystals and molecular crystals. In the crystal, the carbon atoms in the same layer are sp2 hybridized to form a covalent bond. Each carbon atom is connected to three other carbon atoms. The six carbon atoms form a regular hexagonal ring on the same plane and stretch to form a sheet structure. . The carbon atoms in the same plane still have a p orbital each, they overlap each other, and the delocalized π-bonded electrons can move freely in the lattice and can be excited, so graphite has metallic luster, can conduct electricity and transfer heat. Due to the large distance between the layers and the small bonding force (Van der Waals force), each layer can slide, so the density of graphite is smaller than that of diamond, soft and smooth.
2020-11-11 -
More
Lithium-ion batteries may be replaced by durian
lithium-ion batteries are everywhere, they will age, and the environmental cost will be huge. Durian may become a new substitute.
2020-08-07 -
More
The application prospect of carbon nanotubes
Carbon nanotubes (CNTS) have the properties of being as hard as a diamond but very flexible, which can be stretched. At present, the critical factor for the strength of the enhanced fibers commonly used in the industry is the length-diameter ratio, which means the ratio of length to diameter. Typically, materials engineers want a rate of at least 20:1, while the proportion of carbon nanotubes is more than 1,000:1 usually.3. Prospect
2020-08-07 -
More
Three Derivatives of Graphite
The role of graphite is obvious, but in addition to graphite, we need to understand other derivatives, such as graphite powder, graphite anode, carbon nanotubes and so on.
2020-07-02