The reason why the carbon electrode is fragile: because the air contains water, oil, etc., it is easy to corrode with the carbon electrode, resulting in a layer of sticky substance on the surface of the carbon electrode. The short life of carbon electrodes is mainly due to low carbon solubility and easy carbonization due to high temperature. In addition, lead-containing carbon electrodes are also easy to make carbon passivation electrodes. Lead has a high capacity but is prone to legalization, which is an important factor affecting its life.

This question is not very clear. The main reason for the brittleness of the carbon electrode is the low decarbonization efficiency of the water electrode. In addition, when the decarburization starts, a lot of water-soluble organic compound encounters the carbon electrode and is prone to carbonization. Moreover, since water-soluble organic matter is an active substance, if the carbon electrode material is not selected properly, water-soluble organic matter may also be a hidden factor affecting the decarbonization efficiency. Therefore, first, the selection of electrode materials should be good enough. Secondly, if the preprocessing is not in place, the adhesion of water-soluble organic matter on the surface of the electrode will lead to the failure of desulfurization and lead removal, and the deposition of difficult-to-remove metal ions on the carbon electrode will occur.

Therefore, in some laboratories, the pre-processing and desulfurization of electrodes are not in place, and the water-soluble organic matter is directly dissolved in water for desulfurization and deleading. This will lead to the failure of desulfurization and lead removal on the surface of the electrode, and a large number of particles will be deposited on the surface of the carbon electrode. If the liquid without water or crystal desulfurization and deleading is directly used, the entire carbon electrode may be corroded. Third, the failure of desulfurization and lead removal during dissolution is sometimes difficult to find in the flow field. Due to cost considerations, coarse particles may be chosen instead of fine particles.

However, if there is a problem with this carbon electrode product, it may become a fried electrode, and the electrode leak and explode together. I have a heavily fried electrode in my lab, which is still being repaired. In addition, the lifespan will be reduced. You can directly think about the impact of your environment on the long-term stability of the electrode, which will lead to a shortened lifespan.