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Lithium batteries refer to a wide range of categories, and those that use lithium materials can be called lithium batteries. According to the scientific name, what we usually refer to as lithium batteries should be called lithium-ion batteries/lithium secondary batteries, with corresponding negative electrode materials.

The positive electrode materials of lithium-ion batteries mainly include lithium cobalt oxide LiCoO2, lithium manganese oxide LiMn2O4, lithium nickel oxide LiCoxNiyMnzO2, ternary materials, lithium iron phosphate LiFePO4, etc. A ternary lithium battery is one that uses ternary materials as the positive electrode;

The main advantage of ternary lithium batteries is that their energy density is higher than other materials;

The positive electrode materials of ternary lithium batteries are further divided into NCA nickel cobalt aluminum and NCM nickel cobalt manganese;

Most of the ternary materials are NCM, and the ternary lithium battery we generally refer to is NCM. The representative foreign manufacturers of NCM are SDI and SKI, while in China, they mainly include Lishen, Huitong Tianxia, Bike, Wanxiang, and Delaunay. Tesla adopts the NCA18650 model, which has relatively strong NCA stability and strong cycling performance; However, during the production process, due to the fact that Al is an amphoteric metal that is not easily precipitated, there is a threshold in the process. Due to the low aluminum content in NCA, it is often referred to as a binary material.

The NCM product models for ternary materials range from 111 ternary (N: C: M=1:1:1) to 433532622811. As the nickel content increases, the energy density of the battery also increases accordingly.

After 30 years of development, lithium-ion batteries have significantly improved their performance in terms of specific energy and specific power, and have been successfully applied in automobiles. Due to the limitation of battery specific energy, the limited range of pure electric vehicles is a bottleneck that hinders their development. Foreign automakers have recently planned to focus on developing hybrid electric vehicles. At present, the main positive electrode materials used in lithium-ion batteries include lithium manganese oxide, lithium iron phosphate, lithium cobalt oxide, ternary materials, etc. Currently, the power type battery positive electrode mainly uses lithium iron phosphate and ternary materials. This article uses the same battery shell cover, negative electrode material, and internal structure design to produce batteries made of lithium iron phosphate and ternary positive electrode materials. The specific energy, specific power, cycling, high and low temperature characteristics of the two batteries are compared, and the performance differences between the two batteries are analyzed and compared.

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