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There are five kinds of cathode materials: lithium cobaltate, lithium manganate, lithium nickel cobalt manganate, lithium iron phosphate, lithium nickel cobalt aluminate. The ternary cathode materials of lithium ion batteries account for a large proportion.
The ternary cathode material of lithium ion battery is used to reduce the cost of the material, improve the stability and layout invariability of the material. However, high manganese content will crush the layered layout of the material and lower the specific capacity of the material.
Because LiNi1/3Co1/3Mn1/3O2 has high specific capacity, good cycle performance, good thermal stability, and the value of manganese and nickel is lower than cobalt, it can greatly reduce the cost of the material, which is an ambitious cathode material for lithium-ion batteries. The ternary material of nickel, cobalt and manganese has the meaning of lithium nickel, lithium cobalt and lithium manganese.
Compared with lithium niobate, the energy density of the ternary material is deficient, but its invariance is greatly improved. Compared with lithium cobalt, the platform of ternary materials is slightly lower, and the maturity of materials is somewhat different, but the serenity and cyclicity, especially the feasibility of high charging voltage, are higher. Compared with lithium manganate, the tranquility of ternary aging is much lower, but the high-temperature function and energy density have great advantages.
At present, Sanyuan in the domestic market is generally the use scale of lithium cobaltate as an alternative to lithium manganate in the department. It may be mixed with lithium manganate and used in the low-end electronic consumer goods, and mixed with lithium manganate in the low-end power market.
What are the advantages of ternary cathode materials for lithium-ion batteries?
Ternary materials are known as the preferred materials for lithium-ion batteries because of their low value and unchanged functions, and lithium-ion batteries with ternary materials as the cathode have many advantages.
1. The ternary cathode material of lithium-ion battery is inexpensive and low cost
2. The cycle function is better than normal lithium cobalt
3. The capacity of gram is slightly higher than lithium cobalt
4. Balance between capacity and security
5. Good overcharge resistance and easy synthesis
6. When charging and discharging with large current, the polarization is small.
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