Comparison of life and safety performance of lithium iron phosphate battery and ternary lithium battery

The remaining capacity of the lithium iron phosphate battery is 84% u200bu200bafter 5000 cycles, and the remaining capacity of the ternary lithium battery is 66% after 3900 cycles. In terms of cycle life, the advantages of lithium iron phosphate batteries are more obvious. If the remaining capacity/initial capacityu003d80% is used as the end point of the test, the current 1C cycle life of the lithium iron phosphate battery laboratory is more than 3500 times, and some reach 5000 times, while the 1C cycle life of the ternary lithium battery laboratory is about 2500 times. In terms of cycle life, lithium iron phosphate batteries have a much longer true life than ternary lithium batteries. Under the same number of cycles, the remaining capacity of the lithium iron phosphate battery is much more than that of the ternary lithium battery. In addition to the large gap between the two batteries in terms of cycle life, the two are also different in terms of safety performance. The safety performance of lithium iron phosphate batteries and ternary lithium batteries are compared in terms of material systems. The analysis temperature of the positive electrode material of the lithium iron phosphate battery is about 700 degrees Celsius, and the analysis temperature of the positive electrode material of the ternary lithium battery is about 200 degrees Celsius. In the laboratory testing environment, short-circuited lithium iron phosphate battery cells will hardly have a fire. The ternary lithium battery is different and will be more prone to fire. Therefore, the ternary lithium battery has higher requirements for thermal management, and the lithium iron phosphate battery is more adaptable to temperature and safer. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.