Nickel-cadmium battery

Nickel-cadmium battery is present in the negative cadmium (Cd) and sodium hydroxide (NaOH) in the hydroxide ion (OH-) generating hydroxide compounds, cadmium, and that this compound attached to the anode, and can also release e. E-flow along the wires to the  digital camera battereiscathode, with cathode nickel dioxide and sodium hydroxide solution in the water reaction, and then produce nickel hydroxide and the hydroxide ion, nickel hydroxide will be adsorbed on the anode, so that hydroxyl ions also Huitang to the sodium hydroxide solution, the resulting concentration of sodium hydroxide solution does not change over time wastage.

Nickel-cadmium batteries were the first used in mobile phones, laptop computers and other equipment, the battery type, which has excellent high-current discharge characteristics, resistance to over charge and discharge capability and easy maintenance. Nickel-cadmium batteries of the most fatal flaw is that in the charge-discharge process if not handled properly, there will be serious "memory effect", makes the service life shortened. The so-called "memory effect" is the battery in the charge before the battery power has not been completely exhausted, the battery capacity over time will cause the reduction Dell Inspiron E1705 battery，Dell Latitude D410 batteryof the battery charge and discharge process (discharging more obvious), would be very on-board battery is some of small bubbles, these bubbles accumulate and reduce the size of the battery plates also indirectly affect the battery capacity. Of course, we can control the charge and discharge reasonable way to reduce the "memory effect."

In addition, cadmium is toxic and, therefore, nickel-cadmium battery is not conducive to the ecological environment protection. Since traditional sintering process is extremely negative, cadmium and coarse grains, if the nickel-cadmium battery is fully discharged before they are re-charging, easy to gather Manifold Ershi grain cadmium battery discharge formed when the secondary discharge plateau. Discharge the battery will be stored in this platform and in the next cycle will end as a discharge, although the capacity of the battery itself, can make the battery discharge to a lower platform. In the subsequent discharge process in the battery will only remember the low volume. Similarly, every time you use, any one not fully discharge all will deepen this effect, so that the battery capacity becomes lower.

Nickel-cadmium battery cathode active material from the board of nickel oxide powder and graphite powder composition, graphite not participate in chemical reactions, whose main role is to enhance the conductivity. Negative electrode active material from the board of cadmium oxide powder and iron oxide powder composition, the role of iron oxide powder is to cadmium Dell Latitude D500 battery， Dell Latitude D505 battery oxide powder have a higher proliferation, prevent clotting, and increase the plate capacity. Active substances were wrapped in perforated steel, the compression molding was turned into positive and negative battery plate. Between plates of hard rubber insulation with alkali-stick or a hole PVC corrugated plates separated. Electrolyte is usually potassium hydroxide solution. Compared with other batteries, NiCd batteries self-discharge rate (ie, the battery loses charge when not in use rate) moderate. NiCd batteries in the use of process, if not completely discharge on another charge, discharge next time, you can not release all the power. For example, the release of 80% of the electricity and then fully charged, the battery will only emit 80% of the electricity. This is the so-called memory effect.

Finally talk about the packaging under the nickel-cadmium batteries, which contains retail use of the positive convex head plate, and assembly used in both positive Flat packaging, they in terms of volume, and there is no difference. In the charge back on the road is also similar with the nickel-metal hydride batteries. But one thing is different is that nickel-cadmium battery memory effect than Ni-MH battery should be obvious. Therefore, to ensure that life will not be affected, then they would pay attention to daily maintenance in the use of electricity before carrying it out completely without charge.