Graphite electrode sheet is the simplest graphite material with a density of only more than 500 g/cm3. The most notable features of graphite materials are excellent melting point, ultra-low moisture absorption, and ultra-fast volatilization. A sufficiently dense graphite material burns without smoking. It has the following characteristics: ①It is high performance, and it is high performance when the graphite block is less than one kilogram. Generally, it is only 250g/cm3, and it is as high as 560g/cm3 when it is greater than a kilogram; ②It is low thermal conductivity, which means that heat cannot be lost in the form of heat conduction, so it can be used as a heat transfer medium.

③It is an ultra-low melting point, which means that the material will not expand significantly after the melting point passes.  ④ It is ultra-fast volatilization, and it is almost impossible to see obvious color changes when graphite burns.  ⑤It is not easy to process, not easy to cut, the tool wears very fast, and the blade is easy to blunt. Graphite electrode sheets have the above characteristics, and are currently the most used and widely used. Common manufacturing methods in graphite electrode sheets include electrode method and solution method. The electrode method refers to the continuous reduction of carriers by coolant to separate doping, so this method requires cooling technology related to strong ion pairs and ion conductance.

The solution method is another main manufacturing method of graphite electrode sheets other than the electrode method. It does not need to make the electrode sheet ion conductance particularly large, as long as the electrode sheet does not fall off. The characteristics of graphite electrodes mainly depend on the doped substances in the electrode materials. As long as the doping does not affect the carrier mobility of the electrodes, it has little to do with the chemical properties of the monomers. Therefore, graphite powder + high-purity water can be used as coolant in the manufacture of ordinary graphite electrodes, and its theoretical monomer concentration can reach up to 1mol/cm3. Ionic conductivity can be reduced to below 1mol/cm3 by using high-purity water.