What are the structural differences between alkaline and acid batteries?

With the rapid development of industry information, the increase of electric appliance accelerates the expansion of dry cell market, and the shadow of dry cell is everywhere in our life. According to the acid-base property of electrolyte, dry cell can be divided into two kinds: acid zinc-manganese dry cell and alkaline zinc-manganese dry cell. The basic structure of the acid zn-mn dry battery was determined by French scientists. The outer shell of the battery is a zinc cylinder as a negative electrode, and a carbon rod and an electrolyte of manganese dioxide powder and amine chloride in the middle of the positive electrode. The structure of an alkaline zn-mn dry cell is the opposite of that of an acid zn-mn dry cell, with a negative electrode at the center made up of zinc powder and a mixture of a manganese dioxide and a potassium hydroxide solution, with the negative electrode enclosing the positive electrode in the middle, the potassium hydroxide is also an electrolyte, and the outermost layer is a steel shell. The reverse structure, as opposed to an acid battery, ensures that the manganese dioxide does not loosen when it is discharged because it is protected by a steel shell. It can be seen that the alkaline battery is actually an improvement on the acid battery, the acid battery takes the zinc barrel as the shell, and in the reflection process, if the zinc barrel is used too little, it is extremely easy to puncture the zinc barrel and leak water, too much zinc canisters can lead to waste, resulting in voltage instability and short storage time, while the alkaline battery shell only provides protection, because the negative electrode material from the zinc canister into zinc powder, but also increased the negative reaction surface area, the alkaline battery has more capacity. Since both alkaline and carbon batteries have a paste-like electrolyte, they are both dry cells. At present, acidic batteries have gradually come out of people's vision, while alkaline batteries have been widely used.