Explanation

The utility model relates to an alkaline secondary cell, wherein the negative active material is spongy cadmium, and the positive active material is nickel hydroxide without hydroxySS. The electrolyte is a potassium hydroxide aqueous solution. Nickel cadmium battery has the advantages of long cycle life, good high current performance, strong overcharge resistance, economy and durability. Small sealed cylindrical and button nickel-cadmium battery are the first secondary cell used in various portable electronic devices such as recorders and mobile phones. The shape of the unsealed nickel-cadmium battery is mostly rectangular, and the rated capacity is large (up to 1000A-h). Mainly used in computer uninterrupted power supply, power supply for power station control systems, and emergency power supply for elevator operation. The main disadvantage of nickel cadmium battery is that it has serious memory effect. In addition, it is easy to cause nickel cadmium pollution in the production and use process. Not conducive to the protection of the ecological environment. With the gradual expansion of the application fields of Li ion battery and nickel hydrogen batteries, the application fields of nickel cadmium batteries are gradually shrinking.

Classification