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Reduce cation mixing occupation, stabilize the layered structure of the material, reduce impedance value, improve conductivity, and improve cycling and rate performance. It 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, excessive Ni can also lead to the mixing of lithium and nickel due to dislocation phenomenon 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 poor electrochemical performance.

Not only can it reduce material costs, but it can also improve the safety and stability of materials. However, excessive Mn content can easily lead to spinel phase and damage the layered structure, resulting in reduced capacity and cyclic decay.

High energy density is the advantage of ternary lithium batteries, and the voltage platform is an important indicator of battery energy density, which determines the basic efficiency and cost of the battery. The higher the voltage platform, the larger the specific capacity. Therefore, for batteries of the same volume, weight, and even the same ampere hour, ternary lithium batteries with higher voltage platforms have longer battery life. The discharge voltage platform of a single ternary lithium battery is as high as 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 energy density, ternary lithium batteries have an absolute advantage over lithium iron phosphate, lithium manganese oxide, or lithium titanate.

Poor safety and short cycle life are the main shortcomings of ternary lithium batteries, especially safety performance, which has been a major factor limiting their large-scale assembly and integration applications. A large number of actual tests have shown that large capacity ternary batteries are difficult to pass safety tests such as needle puncture and overcharging, which is why manganese elements are generally introduced more into large capacity batteries, and even mixed with lithium manganese oxide for use. The cycle life of 500 cycles is relatively lower than average in lithium batteries, so the main application areas of ternary lithium batteries are consumer electronics products such as 3C digital.

Ternary lithium batteries have high energy density and better cycling performance than normal lithium cobalt oxide. At present, with the continuous improvement of formula and structural perfection, the nominal voltage of the battery has reached 3.7V, and its capacity has reached or exceeded the level of lithium cobalt oxide batteries.

The ternary lithium-ion battery, abbreviated as the ternary lithium-ion battery, is an environmentally friendly battery that is widely used in various fields and is widely promoted in the market.

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