Briefly describe the capacity and safety aspects of ternary lithium-ion batteries

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 strengths of the three metal elements are as follows: Co3+: Eliminates cations and mixes 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 with 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 present a spinel phase and smash the layered layout, resulting in lower capacity and attenuation of recurrence. 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 the temperature in winter at a low temperature of 0-5 degrees in the summer. There is a decline, but it is not clear. Regions closer to the north will have more declines. The ternary materials of lithium-ion batteries have gradually grown to the ternary materials of lithium-ion batteries composed of high nickel with higher specific capacity. By optimizing the synthesis process, effective wrapping or doping, the material's recurrence and odds function can be improved, and the security can be improved while the charge-discharge cut-off voltage is increased, thereby obtaining a higher specific capacity. Over the years, the output of ternary materials has continued to increase. 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: Do you know what to pay attention to when designing lithium-ion battery casing?