What materials are the positive and negative electrodes of lithium ion batteries?

The anode is aluminum foil and the cathode is graphite.

1. lithium cobaltate

As a cathode material, it has been used for the earliest time and still belongs to the mainstream cathode material in consumer electronic products. Compared with other cathode materials, lithium cobaltate has higher voltage in working process, stable voltage operation in charge and discharge process, high cycle performance, high conductivity, stable material, lithium ion battery and other processes.

2. Ternary cathode materials

Compared with lithium cobaltate, it has great advantages in thermal stability and low production cost, and can be the best substitute for lithium cobaltate. However, its density is low and its cycle performance needs to be improved. In this respect, it can be adjusted by improving the synthesis process and ion doping.

3. Lithium ferrous phosphate

It has good cycle performance and thermal stability when charging and discharging, and has strong safety guarantee during use. Moreover, the materials are green and environmentally friendly, and will not cause serious damage to the environment. At the same time, the price is relatively low. It is considered by China battery industry as the best material for producing large battery modules.

4. Lithium manganate

It has strong safety and overcharge resistance in application. Because China is rich in manganese resources, its price is low, it has little environmental pollution, is nontoxic and harmless, and its industrial preparation operation is relatively simple. However, in the process of charge and discharge, due to the unstable structure of spinel, Jahn-Teller effect is easy to appear, and the dissolution of manganese at high temperature is easy to reduce the capacity of lithium-ion batteries, so its application is also greatly limited.