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source:Industry News release time:2023-05-12 Hits: Popular:AG11 battery
1. Different materials
Nickel -metal hydride battery positive activity substances are NI (OH) 2 (referred to as NIO electrodes). The negative active substances are metal hydrogen, also known as hydrogen storage alloys (electrodes called hydrogen storage electrodes), electrolytic liquid hydroxide solution.
The active substances on the nickel cadmium battery are composed of nickel oxide powder and graphite powder. The main function of graphite is to enhance the conductivity. The active substances on the negative plate are composed of cadmium oxide powder and oxide powder. The function of iron oxide powder is to make cadmium oxide powder have high diffusion, prevent blocks, and increase the capacity of the plate.
Different classification
There are two types of nickel -metal hydride batteries: high -pressure nickel -metal hydride and low -pressure nickel -metalized batteries. It is a well -known battery. There is no other classification for nickel -cadmium batteries, and it is a very ideal DC battery.
3. Different charge and discharge requirements
Nickel -hydride batteries are more taboo over charging during use. Because excessive charging can easily lead to expansion, cause the active substances of the corresponding battery to be separated from and damage to the diaphragm, which will cause the conductive network to be destroyed and the battery Ohrhua Electrica.
The nickel -cadmium battery is better than nickel -metal hydride batteries that can resist overcharging and over -discharge. Can withstand a harsh environment.
Fourth, different life span
Nickel -hydride battery charging and discharge cycle life is longer than ordinary batteries, which can reach thousands of times. The nickel -cadmium battery can only provide more than 500 charging and discharge cycles. The service period of this type of battery equipment can be provided.
5. Different characteristics
Nickel -hydride batteries have a good ratio. Its mass ratio is 60A · H/Kg, which is 5 times that of cadmium nickel batteries.
6. Different memory effects
Due to the different battery technology, the memory effect of the nickel -metal hydride battery is very poor and the memory effect of the nickel -cadmium battery is very strong.
Seven, different capacity
The capacity of nickel -hydride batteries is generally higher than that of nickel -cadmium batteries. Nickel-hydride batteries are about 1600 ~ 2100mAh, while nickel-cadmium batteries are usually about 600-1000mAh.
8. Summary
The difference between nickel -metal hydride batteries and nickel -cadmium batteries is materials, classification, charging and discharge requirements, life, comparison characteristics, memory effects, capacity, etc.
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