What is an Alkaline Battery?

Alkaline batteries are also known as alkaline dry batteries, alkaline zinc-manganese batteries, and alkaline manganese batteries. They are the best-performing varieties of zinc-manganese batteries. Suitable for large discharge and long-term use. The internal resistance of the battery is low, so the current generated is larger than that of ordinary carbon batteries. Because these batteries do not contain mercury, they can be disposed of with domestic waste and do not need to be intentionally recycled.

Alkaline battery

Alkaline batteries are also called alkaline dry batteries.

Alkaline batteries are successful with high capacity

Many people in China are not familiar with alkaline batteries, but they have begun to occupy the market at an alarming rate. Its main advantage is its durable power, which is generally seven times that of ordinary batteries.

Rechargeable alkaline zinc-manganese battery (rechargeablealkaline zinc-manganese battery) An improved alkaline zinc-manganese battery that can be reused by charging, referred to as RAM. The structure and manufacturing process of this battery are basically the same as those of alkaline zinc-manganese batteries.

In order to achieve rechargeable, the battery is improved on the basis of alkaline zinc-manganese batteries: improve the structure of the positive electrode, increase the strength of the positive electrode ring or add additives such as binders to prevent the positive electrode from swelling during charging and discharging; Doping to improve the reversibility of manganese dioxide; Control the amount of zinc active material anode, control manganese dioxide can only be discharged with 1 electron; Improve the isolation layer to prevent zinc dendrites from penetrating the isolation layer when the battery is charged and short circuit .

The charge-discharge cycle performance of the rechargeable alkaline zinc-manganese battery is inferior to that of the traditional secondary battery, and the charge-discharge system has a great influence on the cycle life of the battery. The full charge and discharge cycle life is only about 50 times. Do not over discharge when using this type of battery. Shallow discharge can greatly increase the battery's cycle life. The discharge reaction of the battery is the same as that of the alkaline zinc-manganese primary battery. The reverse reaction of the discharge reaction occurs when charging:

MnOOH + Zn (OH) ₂ Zn + MnO ₂ + H ₂ O

Due to the short cycle life of the battery and its development constraints, there are only a few companies in the United States and Canada in large-scale production in the world. China also produces such batteries, but the production and export volume are small.

capacity

Alkaline batteries have a higher capacity than carbon batteries because they are used as cathodes.

Leaking electrolyte

Alkaline batteries that have been left for a long time will leak the electrolyte. Since the electrolyte is a corrosive alkaline substance, potassium hydroxide, it will irritate the eyes, the respiratory tract and the skin; the electrolyte will also attack metals and damage electronic parts, so The electrolyte leaked from the battery will also damage the products using the battery, especially the electronic products.

Do not charge alkaline batteries

Charging alkaline batteries can also cause batteries to leak

Alkaline batteries produced before 1996 may contain traces

In the first five months of 2013, the total domestic production of alkaline batteries was 255 million units, a decrease of 4.56% year-on-year, of which May production was 50.277 million units, a year-on-year decrease of 18.62%. The monthly output of alkaline batteries has always fluctuated greatly. Due to the decline in lithium battery prices, it is expected that the performance of the alkaline battery industry will not substantially improve.

Monthly output of domestic alkaline secondary batteries in 2008-2013 Unit: only / month ^[1]