It can be distinguished from the nominal voltage. The voltage of a single nickel-metal hydride battery is 1.2 V, and the combined battery is an integral multiple of it;
Lithium batteries can have 3 V, 3.2 V or 3 .7 V depending on materials and processes. The combined battery voltage is an integer multiple of this.
Lithium battery
“Lithium battery” is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses non-ionic electrolyte solution. watery. Lithium metal batteries were first proposed and studied by Gilbert N. Lewis in 1912. In the 1970s, M. S. Whittingham proposed and began studying lithium-ion batteries. Since the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal are subject to very high environmental requirements. Therefore, the batterieslithium batteries have not been used for a long time. With the development of science and technology, lithium batteries have now become mainstream.
Nickel-metal hydride batteries
are synthesized from hydrogen ions and metallic nickel. They have 30% more power reserve than nickel-cadmium batteries. They are lighter and have a longer lifespan. than nickel-cadmium batteries. No pollution for the environment. The disadvantage of nickel-metal hydride batteries is that they are much more expensive than nickel-cadmium batteries and have poorer performance than lithium batteries.
1. The difference between lithium batteries and nickel-metal hydride batteries:
1. Under the same volume, lithium batteries have greater capacity than nickel-metal hydride batteries. . Consequently, its autonomy in conversation and standbyThe battery life is longer than that of nickel-metal hydride batteries, and its price is higher than that of nickel-metal hydride batteries. In addition, under normal circumstances, nickel-metal hydride batteries cannot be charged at any time, which greatly reduces their convenience.
2. The volume specific energy of lithium batteries is high. The working voltage of the lithium-ion battery is 3.7V, and its volume specific energy is higher than that of nickel metal hydride. Currently, lithium-ion batteries are available in aluminum shells, steel shells and flexible packaging. occupy the market in their respective fields.
3. Operating voltage standards are different. The working voltage of disposable batteries and nickel-metal hydride batteries is 1.2 to 1.5 V, and the two connected in series are 2.4 V to 3.0 V. Most devices areElectrical companies have already established this operating voltage standard. Such as a portable music player, radio, etc.
2. Similarities between lithium batteries and nickel metal hydride batteries:
Both can provide power easily and say goodbye to constraints, some are common in the market, such as cell phone lithium ; batteries.
Detailed information:
1. Advantages and disadvantages of lithium batteries:
1. Advantages: no memory effect, lightness. .
2. Disadvantages: high cost, low current, and intolerance to overload (compared to nickel metal hydride).
2. Advantages and disadvantages of nickel-metal hydride batteries:
Advantages: low price, strong versatility, high current, environmentally friendly and stable.
2. Disadvantages: high weight, short battery life.