With the rapid development of industrial information […]
With the rapid development of industrial information, the increase in electrical appliances has accelerated the expansion of the dry battery market, and the shadow of dry batteries is everywhere in life. According to the acid and alkaline properties of the electrolyte, dry batteries can be divided into the following two categories: acid zinc-manganese dry batteries and alkaline zinc-manganese dry batteries.The basic structure of the acid zinc-manganese dry battery was first determined by the French scientist Le Clancy, so it is also called the Le Clancy battery. The outer shell of this battery is a zinc cylinder as the negative electrode, and the positive electrode is a carbon in the middle. Rod and manganese dioxide powder, amine chloride electrolyte.
The structure of alkaline zinc-manganese dry battery is just opposite to that of acid zinc-manganese dry battery. The center of the battery is the negative electrode, which is composed of zinc powder;the positive electrode is a mixture of manganese dioxide and potassium hydroxide solution, and the negative electrode encloses the positive electrode. Electrolyte, the outermost layer is a steel shell.This reverse structure compared with acid batteries ensures that the expansion of manganese dioxide will not loosen itself due to the protection of the steel shell when the alkaline batteries are discharged.
It can be seen that the alkaline battery is actually an improvement to the acid battery. The acid battery uses a zinc cylinder as the outer shell. During the reflection process, if the zinc cylinder uses too little zinc, it is very easy for the zinc cylinder to pierce and leak water. Too many zinc cans will cause waste, which will result in unstable voltage and short storage time. The outer shell
of alkaline batteries only plays a protective role, because the negative electrode material changes from zinc cans to zinc powder, which also increases the negative reaction. The surface area allows
alkaline batteries to gain more capacity. Since the electrolytes of alkaline batteries and carbon batteries are paste-like, they are both dry batteries. At present, acid batteries have gradually come out of people's field of vision, while alkaline batteries have been widely used.