From October 14th to 17th, the 15th National Symposium on New Carbon Materials was held in Shenzhen. At the meeting, Professor Liu Hongbo from the School of Materials Science and Engineering of Hunan University was awarded the "17th China Carbon Outstanding Achievement Award" in recognition of his outstanding contributions in the field of carbon materials.
Needle coke is a silver-white solid carbon material with metallic luster, which has obvious needle-like texture structure when observed under a microscope. Because of its low thermal expansion coefficient, high electrical conductivity, and high chemical stability, it is widely used in high-performance graphite electrode materials, lithium ion batteries, electrochemical capacitors and other fields.
At present, needle coke is mainly used to manufacture graphite electrodes for ultra-high power electric furnace steelmaking. This kind of electrode has high electrical conductivity, high mechanical strength, excellent thermal shock resistance and oxidation resistance. Graphite electrodes are made of needle coke as the main material and medium-temperature pitch as the binder, after forming, roasting, impregnating and graphitizing processes.
Oil-based needle coke is one of the new carbon materials that are currently receiving high attention. It is an important raw material for the production of graphite electrodes, battery negative electrodes and high-end carbon products. It has a wide and strong industrial demand.
High-density, high-strength, nuclear-grade high-purity graphite materials are planned to be used in the world's first fourth-generation nuclear power technology - high-temperature gas-cooled reactor commercial reactors; It is used to adjust the reactivity in the nuclear reactor when the nuclear power plant is initially installed; realize localization and ensure the safety of national nuclear energy.