News
Carbon / carbon - silicon carbide composite material is carbon fiber reinforced carbon and silicon carbide ceramic matrix composite material , it appears in early 1980s as the thermal structure of materials with low density, good oxidation resistance, corrosion resistance, excellent high temperature mechanical properties and thermal physical properties, good self-lubricating performance and other advantages, it is a new high temperature structural materials and functional materials which can be used in the 1650℃. As the brake disk material , the carbon / carbon - silicon carbide composite material not only has the advantages such as carbon disk density is small, stable brake wear, the rate of weight loss is small and large heat capacity , but also it overcome the…
Graphite felt has good stability, the unit cost of large surface area, good permeability of the advantages of electrode materials used in direct methanol fuel cell flow, but because of its poor hydrophilicity, electrochemical activity is not high, which greatly limits its application. Therefore, we try to improve the electrochemical properties of carbon atoms by changing the electronic structure of carbon atoms. Although the nitrogen doped graphite felt has been reported sporadically, the research on the nitrogen doped graphite felt used as the cathode of direct flow methanol fuel cell is still in the blank. With the energy and environmental problems become more and more prominent, the research and development of green, pollution-free new energy has been attached great importance…
The raw material of spherical graphite is the high quality natural flake graphite, the advanced processing technology is adopted to modify the surface of graphite, it’s the graphite product which is in different fineness and the elliptical spherical shape. The spherical graphite processing, at first , we get the initial spherical graphite product by by coarse crushing, reconditioning, magnetic separation process from the dry fine graphite ore in graphite workshop, and then we get the spherical graphite (high purity)by high temperature purification in the workshop workshop . Spherical graphite material has good conductivity, high crystallinity, low cost, high theoretical lithium capacity and other characteristics, its charging and discharging potential is low and flat, it’s an important part of anode materials…
