Compare the performance of lithium iron phosphate batteries and ternary lithium batteries

Performance comparison between lithium iron phosphate battery and ternary lithium battery. In today's power lithium-ion battery market, there are important lithium iron phosphate batteries and ternary lithium batteries. Although both are secondary batteries, they can be charged and discharged repeatedly, but due to the difference in materials, they show a large performance difference in the final use level. Performance comparison between lithium iron phosphate battery and ternary lithium battery The so-called lithium iron phosphate battery refers to a lithium battery with lithium iron phosphate as the positive electrode material. The characteristic of this battery is that it does not contain noble metal elements such as cobalt. Because it contains no precious metals, lithium iron phosphate batteries can be compressed at a very low cost. Lithium iron phosphate battery has the advantages of high temperature resistance, strong safety and stability, low price, and good cycle performance. The ternary lithium battery is a lithium battery with nickel cobalt lithium manganate as the positive electrode material and graphite as the negative electrode material. Different from the lithium iron phosphate battery, the ternary lithium battery has a high voltage platform, which means that under the same size or weight, the ternary lithium battery has a higher specific energy and power. In addition, ternary lithium batteries also have great advantages in terms of charging rate and low temperature resistance. Lithium iron phosphate battery. JPG1. Comparison of energy density and range. Compared with lithium iron phosphate batteries, ternary lithium batteries have higher energy density and higher voltage, so a battery pack of the same weight has a larger capacity, and the car can run farther Faster. Tesla's charging range exceeds 400 kilometers. BAIC EV200 uses a ternary lithium battery from South Korea's SK company and has a theoretical cruising range of 200 kilometers, while its predecessor EV150 uses a lithium iron phosphate battery and has a cruising range of only 150 kilometers. In contrast, the energy density of my country's mainstream lithium iron phosphate batteries is only about 150Wh/kg. According to the analysis of domestic battery industry experts, the energy density of lithium iron phosphate battery packs is expected to reach 300Wh/kg in the next few years, and the hope is very slim. 2. Comparison of space occupancy Regarding bulky electric buses, the space footprint has less impact. But for household electric vehicles, space is more important. The low-energy density lithium iron phosphate battery occupies less space in the car, is heavier, and has a greater impact on battery life. Relatively speaking, the higher energy density ternary lithium battery solves the weight problem and saves the space of the family car. 3. Comparison of low-temperature discharge performance. When the two batteries are discharged at 55°C and 25°C, the discharge capacity is basically the same when the two batteries are discharged at a normal temperature of 25°C. At -20°C, ternary lithium batteries have obvious advantages over lithium iron phosphate batteries. my country has a vast territory and a complex climate. From the three northeastern provinces at the northernmost point to Hainan Island at the southernmost point, temperature changes are very abundant. In Beijing, for example. As an important market for electric vehicles, Beijing has a maximum temperature of around 40°C in summer and around -6°C or even lower in winter. This temperature range is obviously suitable for ternary lithium batteries with better performance at low temperatures. Lithium iron phosphate batteries attach importance to high temperature resistance, which is often very fragile in winter in Beijing. 4. Comparison of charging efficiency In addition to battery life, charging is also an important link in the actual use of electric vehicles. Ternary lithium batteries have great advantages over lithium iron phosphate batteries in terms of charging efficiency. When the ternary lithium battery and the lithium iron phosphate battery are charged less than 100ah, there is no significant difference in the constant current ratio. When the charge exceeds 100Ah, the constant current ratio of the lithium iron phosphate battery drops rapidly, and the charging efficiency drops rapidly. 5. Cost comparison Ternary batteries have more precious metals than lithium iron phosphate batteries, and the most important one is cobalt. In fact, in my country's lithium mines, iron oxide phosphate reserves are abundant, and the manufacture of lithium iron phosphate batteries has advantages. my country lacks cobalt ore, so it is difficult to manufacture ternary lithium batteries that must use cobalt. In the early stage, the development of lithium iron phosphate batteries is realistic. For example, in 2015, domestic mainstream battery manufacturers all processed lithium iron phosphate batteries. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Who will have a better development prospect for lithium batteries and nickel-metal hydride batteries in the future?