What are the fundamental advantages and disadvantages of ternary lithium-ion batteries?

The biggest feature of the ternary lithium-ion battery is that the unit power is relatively large, which is the efficiency compared with the lithium iron phosphate battery. However, a major disadvantage of ternary lithium-ion batteries is that they have a low ignition point when subjected to impact and high temperatures. Therefore, the care of ternary lithium-ion batteries is very demanding to prevent accidents. The ternary lithium-ion battery is balanced in terms of capacity and safety, and is a battery with excellent comprehensive functions. The important uses and advantages of the three metal elements are as follows: Co3+: Eliminates mixed cations to occupy the place, does not change the layered layout of the material, lowers the impedance value, improves the conductivity, and improves the cycle and efficiency functions. Ni2+: can increase the capacity of the material (increase the volume energy density of the material), and due to the similar radius of Li and Ni, too much Ni will also cause lithium and nickel to be mixed due to the dislocation phenomenon of Li, and the concentration of nickel ions in the lithium layer The larger the value, the more difficult it is to deintercalate lithium in the layered layout, resulting in poor electrochemical performance. Mn4+: Not only can the material cost be reduced, but also the security and stability of the material can be improved. However, an excessively high Mn content will easily show a spinel phase and smash the layered layout, which will reduce the capacity and attenuate the cycle. High energy density is the biggest advantage of ternary lithium-ion batteries, and the voltage platform is an important indicator of battery energy density. It determines the fundamental performance and cost of the battery. The higher the voltage platform, the larger the specific capacity, so the same volume, weight, and even The same ampere-hour battery, the ternary material lithium-ion battery with a higher voltage platform has a longer battery life. The ternary lithium-ion battery is about 90% of that in summer at a low temperature of 0-5 degrees in winter. There is a decline, but it is not clear. Regions closer to the north will have more declines. 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: How to delay the service life of lithium-ion battery electric vehicles?