Lithium cobalt oxide battery is a secondary battery that uses lithium cobalt oxide as the positive electrode material. It has the characteristics of high energy density, high voltage platform, large capacity, long life, and good cycle performance, so it is widely used in various mobile electronic devices, power tools, electric vehicles and other fields.

The positive electrode material of lithium cobalt oxide battery is lithium cobalt oxide (LiCoO2), and the negative electrode material is generally graphite. During the charging and discharging process of the battery, LiCoO2 will release Li+ ions, which will move to the negative electrode graphite to complete the charge transfer. The voltage platform of lithium cobalt oxide batteries is generally around 3.7V.

Although lithium cobalt oxide batteries have the advantages of high energy density and long life, their disadvantages are also obvious, such as high price and certain safety risks. With the continuous development of new battery technology, some new materials such as lithium iron phosphate and ternary materials have gradually been applied, and the replacement of lithium cobalt oxide batteries has gradually become a research hotspot.