Ternary lithium-ion battery refers to the lithium-ion battery whose cathode material is lithium nickel cobalt manganate or lithium nickel cobalt aluminate, and the proportion of these elements determines the battery's storage performance, charge discharge efficiency and stability. Now most of the ternary batteries on the market are matched at a recognized and stable ratio, so the safety is relatively guaranteed, but the performance is somewhat limited.

The characteristics of the ternary lithium-ion battery are high energy density and higher voltage. Therefore, the battery pack with the same weight has larger capacity, and the car can run farther and faster. However, its weakness is that its stability is poor. If there is an internal short circuit or the cathode material encounters water, there will be open flames. Therefore, 18650 batteries are generally protected by a steel shell.

It is precisely because ternary lithium materials have such potential safety hazards, so lithium ion battery manufacturers are also trying to prevent accidents. According to the characteristics of ternary lithium materials that are easy to be pyrolyzed, manufacturers will make a lot of efforts in the aspects of over charge protection (OVP), over discharge protection (UVP), over temperature protection (OTP), and over-current protection (OCP).

At present, people's pursuit of high endurance will not stop in a short time, which means that ternary lithium-ion batteries may still be the first choice of many new energy vehicles for a long time. Moreover, it can be seen from the trend in recent years that high nickel ternary materials have become the target of more manufacturers due to their greater advantages in specific energy.