Do you know why aluminum electrolytic capacitors fail?

　　The structure of aluminum electrolytic capacitor should also be mentioned.

The basic structure of the universal aluminum electrolytic capacitor is the structure of the foil type inverted wire type. The anodic oxidation is aluminum metal material foil. The material is the air oxide film Al2O3 of the valve metal material produced on the surface of the anodic oxidation metal material foil by photocatalysis. The negative electrode is the working electrolyte solution absorbed by the porous structure electrolytic paper.

　　It is widely understood that the capacitor is composed of two conductive plates placed side by side. The positive grade is aluminum (anodized foil), the positive intermediate material is not conductive aluminum oxide (anodized film), and the negative grade is lithium battery electrolyte.

　　The key reason for the failure of the electrolytic capacitor is that the electrolyte of the lithium battery has arrived. This lithium battery electrolyte will dissolve itself to form vapor, and will also produce chemical changes with the air oxide film to form vapor. Naturally, under all normal application conditions, this speed is very slow, otherwise it would simply be useless.

　　Therefore, the key to the service life of the electrolytic method is the lithium battery electrolyte. When the lithium battery electrolyte is gone, the capacitor will fail.