(1) High voltage: The operating voltage of the 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-H batteries.
(2) Large specific energy: the actual specific energy that can be achieved is about 555Wh/kg, that is, the material can reach a specific capacity of more than 150mAh/g (3 to 4 times that of Ni-Cd, and 2 to 3 times that of Ni-MH ), which is close to about 88% of its theoretical value.
(3) Long cycle life: generally more than 500 times, even more than 1000 times, lithium iron phosphate can reach more than 2000 times. For appliances with low current discharge, the life span of the battery will double the competitiveness of the appliance.
(4) Good safety performance: no pollution, no memory effect. As the predecessor of Li-ion lithium batteries, lithium metal easily forms dendrites and short-circuits, reducing its application field: Li-ion does not contain cadmium, lead, mercury and other elements that pollute the environment: some processes (such as sintered ) One of the major drawbacks 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 at room temperature after one month of storage is about 2%, which is much lower than 25-30% of Ni-Cd and 30-35% of Ni and MH.
(6) Fast charge and discharge: The capacity of 1C charging for 30 minutes can reach more than 80% of the nominal capacity, and now the ferrophosphorus battery can charge to 90% of the nominal capacity in 10 minutes.
(7) The working temperature range is high, and the working temperature is -25~45°C. With the improvement of the electrolyte and the positive electrode, it is expected to be widened to -40~70°C.