Advantages and disadvantages of ternary lithium batteries

　　Triple lithium batteries have a relatively balanced capacity and safety factor, making them an excellent rechargeable battery with comprehensive performance. The important values, advantages, and disadvantages of the three chemical elements are as follows:

　　Co3: Reduce positive ion mixing clumps, stabilize the layered structure of raw materials, reduce impedance values, improve conductivity, and enhance cycling and rate performance.

　　Ni2: It can increase the capacity of raw materials (increase the volume energy density of raw materials), and due to the similar semi diameter of Li and Ni, excessive Ni may also cause lithium nickel segregation due to the texture formation with Li. The higher the concentration of nickel ions in the lithium layer, the more difficult it is to remove lithium from the layered structure, resulting in a decrease in electrochemical performance.

　　Mn4: Not only can it reduce raw material costs, but it can also improve the reliability and reliability of raw materials. However, too high Mn content can easily lead to the formation of spinel phases and damage the layered structure, resulting in reduced capacity and cycling loss.

　　High energy density is the biggest advantage of ternary lithium batteries, and voltage platform is an important factor in battery energy density, which determines the basic efficiency and cost of the battery. The larger the voltage platform, the more specific capacity it has. Therefore, for rechargeable batteries with the same volume, net weight, or even the same ampere hour, ternary lithium batteries with relatively high voltage platform have longer battery life. The discharge voltage platform of a single ternary lithium battery reaches 3.7V, while that of lithium iron phosphate is 3.2V, and that of lithium titanate is only 2.3V. Therefore, from the perspective of specific energy, ternary lithium batteries have significant advantages over lithium iron phosphate, lithium manganese oxide, or lithium titanate batteries.

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