1. Yes: Refers to the cathode material of the battery. Generally, the cathode material of lithium batteries is lithium lithium cobalt oxide.
Lithium batteries using lithium nickel cobalt manganese acid as the cathode material are usually called ternary lithium batteries, which are lower than lithium cobalt acid, have a slightly higher voltage, and a battery with a slightly lower average voltage (called the platform in the battery industry). The gram capacity is slightly higher but compressed Relatively low, the capacity of the same type of battery is slightly lower than that of the lithium cobalt acid battery.
3. The biggest feature of the ternary lithium battery is that the unit power is relatively large, which is the result of comparison with the lithium iron phosphate battery
4. However, an important disadvantage of ternary lithium batteries is their low ignition point at high temperatures. Therefore, the protection requirements for ternary lithium batteries are very high, in case an accident occurs.
Ternary lithium battery is a battery with balanced capacity, safety and reliability, and excellent overall performance. The important functions and advantages of these three metal elements are as follows:
CO3 +: Reduce the mixing of cations, stabilize the layered structure of the material, reduce impedance, increase conductivity, and improve circulation and efficiency.
Ni2+: It can increase the capacity of the material (it can increase the physical density of the material). However, since lithium and nickel have similar radii, too much nickel can also cause dislocation of lithium and nickel.
Mn4+: It can not only reduce the material cost, but also improve the safety and stability of the material. However, if the Mn content is too high, the spinel phase is likely to appear, destroying the layered structure, resulting in a decrease in capacitance and cycle attenuation.
The biggest advantage of high energy density is the ternary lithium battery. This platform is an important indicator of battery energy density and voltage. It determines the basic performance and cost of the battery. The higher the voltage platform, the greater the capacity of the concrete, the more the same volume. , Weight, and even the same ampere hour battery, the high-voltage platform ternary material lithium battery has a longer life.
The discharge voltage platform of single ternary lithium battery is as high as 3.7V, 3.2V, 2.3V. Therefore, from the perspective of energy density, ternary lithium batteries have an absolute advantage.
The ternary lithium battery has a 90% drop in summer at a low temperature of 0-5°C in winter, but it is not obvious. Further north, the decline is even greater.
