What are the advantages of lithium-ion batteries?
1) High voltage
The working voltage of single battery is as high as 3.7-3.8V (3.2V for lithium iron phosphate), which is 3 times that of Ni-Cd and Ni-MH batteries.
2) Larger than energy
The actual specific energy that can be achieved is about 555Wh/kg, that is, the material can reach a specific capacity above 150mAh/g (3-4 times Ni-Cd, 2-3 times Ni-MH), which is close to its theoretical value. About 88%.
3) Long cycle life
Generally, it can reach more than 500 times, or even more than 1000 times, and for lithium iron phosphate, it can reach 8000 times. For electrical appliances with low current discharge, the battery life will double the competitiveness of electrical appliances.
4) Good safety performance
New lithium ion battery
New lithium ion battery
No pollution, no memory effect. As the predecessor of Li-ion, the lithium battery has a short circuit due to the easy formation of dendrites, which reduces its application fields: Li-ion does not contain cadmium, lead, mercury and other elements that pollute the environment; some processes (such as sintering) A major drawback of Ni-Cd batteries is the "memory effect", which severely restricts the use of batteries, but Li-ion does not have this problem at all.
5) Small self-discharge
The self-discharge rate of fully charged Li-ion stored at room temperature for 1 month is about 2%, which is much lower than 25-30% of Ni-Cd and 30-35% of Ni-MH.
6) Fast charging
The capacity of 1C charging in 30 minutes can reach more than 80% of the nominal capacity, and the ferrophosphorus battery can be charged to 90% of the nominal capacity in 10 minutes.
7) Working temperature
The working temperature is -25~45°C. With the improvement of electrolyte and positive electrode, it is expected to expand to -40~70°C.
