How much do you know about alkaline batteries?

Date:2020-08-08
Summary:

Alkaline batteries are successful high-capacity dry bat […]

Alkaline batteries are successful high-capacity dry batteries, and they are also one of the batteries with a cost-performance ratio. Alkaline batteries use manganese dioxide as the positive electrode, zinc as the negative electrode, and potassium hydroxide as the electrolyte. Its characteristics are better than those of carbon batteries, and the electric capacity is large. The chemical formula is: Zn+MnO2+H2O→Mn(OH)2+ZnO.
Alkaline batteries adopt the opposite electrode structure of ordinary batteries in structure, which increases the relative area between the positive and negative electrodes, and uses highly conductive potassium hydroxide solution instead of ammonium chloride and zinc chloride solutions. The change from flakes to granules increases the reaction area of the negative electrode. In addition, high-performance electrolytic manganese powder is used, so the electrical performance is greatly improved. Generally, alkaline batteries of the same type are the capacity and discharge time of ordinary batteries. 3-7 times higher than the low temperature performance. Alkaline batteries are more suitable for high-current continuous discharge and high working voltage applications, especially for cameras, flashlights, razors, electric toys, CDs Computer, high-power remote control, wireless mouse, keyboard, etc.