In 1996, the University of Texas found that phosphate could be used as a cathode material for rechargeable lithium batteries. Lithium phosphate has good electrochemical performance and low resistance. This is achieved through nano phosphate cathode materials. The main advantages are high rated current and long cycle life; Good thermal stability, enhanced safety and tolerance to abuse.

　　If it is kept under high voltage for a long time, lithium phosphate is more resistant to all charging conditions and has less stress than other lithium ion systems. The disadvantage is that the low nominal voltage of 3.2V battery makes the specific energy lower than that of cobalt doped lithium ion battery. For most batteries, low temperature will reduce performance, and higher storage temperature will shorten service life, including lithium phosphate. Lithium phosphate has higher self discharge than other lithium-ion batteries, which may cause aging and bring about balance problems. Although it can be compensated by selecting high-quality batteries or using advanced battery management systems, both of these methods increase the cost of the battery pack. The battery life is very sensitive to impurities in the manufacturing process, and can not withstand water doping. Due to the presence of water impurities, some batteries have a minimum life of only 50 cycles. The properties of lithium phosphate are summarized.

Read recommendations:

603450 1200mAh 3.7V

Chemical pollution of lithium battery

What is the purpose of lithium-ion battery pack formation?

3.7v 18650 battery pack

2200mah 18650 battery