Due to the low energy density of lithium cobalt oxide batteries and the high energy density of nickel cadmium or nickel cobalt oxide batteries, the advantages of ternary lithium-ion batteries are: smaller size, higher capacity density, better low-temperature resistance, and better cycling performance, making them the mainstay of new energy passenger vehicles.

　　Ternary lithium-ion batteries have a high energy density and better cycling performance than normal lithium-ion batteries. Currently, with the continuous improvement of formula and structure, the nominal voltage of the battery has reached 3.7V, which has reached or exceeded the level of lithium-ion batteries in terms of capacity.

　　The important ternary material lithium-ion batteries include nickel diamond aluminate lithium-ion batteries, nickel diamond manganate lithium-ion batteries, etc. The high-temperature structure is unstable, leading to poor high-temperature safety. Moreover, high pH values can easily cause monomer bloating, leading to faults. Currently, the cost is not low.

　　Battery positive electrode: composed of trivalent elements such as fe2+, co32-, etc;

　　Negative electrode: Graphite is mainly used as the negative electrode material, and carbon fiber or silicon carbon composite negative electrodes can also be used;

　　Diaphragm: Generally, PE diaphragm is used;

　　Electrolyte: Organic solvents are generally used as solvents for electrolytes;

　　In terms of safety: Iron phosphate batteries have good safety, but there are issues with self discharge and low capacity. The advantage of ternary materials lies in their high specific energy and power performance, as well as good safety. It can store more electricity and maintain a longer usage time in the same volume, while the cost is relatively low and the production process is clean and environmentally friendly.

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