Nickel-cadmium batteries, lithium and nickel-metal hydride battery

Nickel-metal hydride and nickel cadmium batteries and differences:

Nickel-metal hydride and nickel cadmium battery voltage is 1.2V. But the nickel-metal hydride volume specific energy than nickel-cadmium batteries. According to different factors of production of battery technology, nickel-cadmium batteries have a strong memory effect, the nickel-metal hydride memory effect is very small. Contain heavy metals cadmium, nickel-cadmium batteries now prohibit the use of. However, due to the nickel-cadmium batteries, excellent high rate discharge performance, in a lot of power tools, Ni-MH battery can not replace the nickel-cadmium batteries. ROSH standard temporarily allow the nickel-cadmium batteries are used in the field of power tools.

Difference between lithium and nickel-hydrogen battery:

In the same volume, the lithium battery than the nickel-metal hydride battery capacity, so the call, long standby time than nickel-metal hydride battery, the price is also higher than the nickel-metal hydride batteries. Also, under normal circumstances, the nickel-metal hydride batteries can not be done with the use charge, convenience is greatly reduced.

The development of lithium-ion battery is lithium batteries, and further development of lithium-ion battery. Early lithium anode is a piece of pure lithium. This lithium is very easy to fire danger. On this basis, the development of lithium-ion battery. The lithium-ion battery anode is graphite. The ionic conductivity, lithium ion, rather than lithium. Security is greatly enhanced.
   The lithium-ion battery voltage of 3.7V. The volume ratio of energy higher than the nickel-metal hydride. Lithium-ion battery aluminum shell, steel, and flexible packaging. Market share in different areas. Some markets are common, such as mobile phones lithium.
    . The volume ratio of energy higher than the nickel-metal hydride. Lithium-ion battery aluminum shell, steel, and flexible packaging. Market share in different areas. Some markets are common, such as mobile phones lithium.
    But before disposable batteries and nickel-metal hydride battery voltage of 1.2 ~ 1.5V, the two series 2.4V Ni-MH battery;>, and so using lithium as a mobile power supply.
    Therefore, the nickel-metal hydride, nickel cadmium, lithium-ion battery in the respective fields can not be replaced by other battery.