What Is The Expansion Process Of Graphite Electrode?
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What is the expansion process of graphite electrode?
The gas in the internal battery is a major cause of swollen batteries. Whether the battery is in a normal circulation system, temperature circulation system, and maintained at high temperature, this will cause different levels of swelling gas. Graphite electrodes are mainly made of petroleum coke and needle coke as raw materials, asphalt mastic as a fusion agent, and are made by calcination, seasoning, kneading, pressing, baking, graphitization, and machining. They are conductors that heat and melt recycled waste in a medium frequency furnace by releasing electromagnetic energy in the form of arc. According to their quality standards, they can be divided into general power, high power and ultra-high power. Graphite electrodes mainly include general power graphite electrodes, anti-oxidation coated graphite electrodes, high power graphite electrodes and ultra-high power graphite electrodes.
Graphite rods are commonly used in the electric heating element of high-temperature vacuum furnaces. The maximum application temperature reaches 3000℃. They are easy to oxidize at high temperatures. Except for vacuum pumps, they can only be used in neutral or oxidizing atmospheres. Its linear expansion coefficient is small, thermal conductivity is large, and resistivity index is (8~13)×10-6Ω·m. Its process performance is better than that of SiC and MoSi2 rods. It is heat-resistant, extremely cold and polar heat-resistant, and its price is relatively affordable. Graphite block is a kind of synthetic graphite, and synthetic graphite is made by processes such as artificial heating of coke products. Generally, if it is purified to a high purity, or made into carbon fiber, the added value will be high. It has been proven that the characteristics that cause battery swelling are caused by the dissolution of lithium battery electrolyte. There are two conditions for the dissolution of lithium battery electrolyte. The electrolyte is a residue, metal residue such as water and electrolyte solvent gas. The other is that the photocatalytic dialog box of the electrolyte is too low, causing the dissolution during the battery charging process. The solvent obtained after the electrolyte EC and DEC, such as electrons, will generate oxygen radicals, which are the direct result of radical reactions to generate low-melting nitrogen compounds, lipids, ethers, and CO2.
