Carbon electrodes include both oxidation and reduction types. Electronically pumped anodic electrodes are mainly used to control biological effects, while DC electrodes are used to improve the performance of steel (chromium-containing steel) or aluminum in terms of strength, elasticity, hardness, dimensional stability, and wear resistance. Electrodes of the same metal may result from passivation (eg demagnetization) of polarized electrodes. When a polarized metal electrode is demagnetized, a magnetic field tends to be distributed in the direction of the surrounding electric field. The existence of its magnetic field will not attract the demagnetized metal and be demagnetized. On the contrary, it can make the distance between the demagnetized contact wire and the metal larger, and the electronic pumping effect is more serious. It increases the time required for the current to be converted into heat, which is conducive to improving the heat utilization rate.

Electric current flows from the metal through a medium containing electrons and ions flow in

It should be the reason crystalline materials, positively charged metals can absorb positive charges

Oxidizing Metal Electrode: Covered by charges are positive charges, separated by shed electrons. Reducing metal electrode: The electrons that are not shed are equivalent to only negatively charged metal atoms or ions. Some media can form with negative charges, such as air, and some media, such as chloride graphite, cannot conduct electricity. It can be said that different types of electrodes of the same media have different conductivity. It is the crystal structure that distinguishes the different types of electrodes.

The difference in the dielectric constant of the medium

The difference in conductivity is not caused by small charges. If you want to use a certain material and a different kind of material, the reason should be that the crystals are different.

Recalling that sentence, the electronic pump cannot fire without reverse. In other words, the difference in charge in the material determines the difference in resistance value to a certain extent.