Artificial graphite refers to graphite materials obtained by organic carbonization and then graphitization high temperature treatment. In a narrow sense, artificial graphite usually refers to block solid materials such as graphite electrodes and isostatic graphite, which are made by using carbonaceous raw materials with low impurity content as aggregates and coal tar as binders through processes such as batching, kneading, molding, carbonization and graphitization.
The degree of graphitization of industrially produced artificial graphite is usually less than 90%. Artificial graphite can be regarded as a multiphase material, including graphite phase converted from carbonaceous particles such as petroleum coke or asphalt coke, graphite phase converted from coal tar binder wrapped around the particles, pores formed by particle accumulation or coal tar binder after heat treatment, etc.
Application fields
Artificial graphite is widely used in various industrial fields due to its unique material properties. For example, in lithium-ion batteries, artificial graphite negative electrode materials have good cycle and safety performance. Although its process is complex and the price is high, it performs well in high-rate discharge and high-temperature environments.
In addition, artificial graphite is also used in carbon-carbon composite materials, graphite paper, carbon insulation soft felt and hard felt, etc.