The Function And Problem Solving Of AT9 Ceramic Edge Coating On Positive Side Of Lithium Battery

Lithium battery positive electrode coating ceramic edge refers to the technology of coating a layer of ceramic material on the surface of the lithium battery positive electrode material. This ceramic material is generally zirconia ceramics, alumina ceramics and other inorganic ceramic materials, zirconia has excellent high temperature resistance and corrosion resistance, can effectively improve the thermal stability and safety of lithium batteries; Alumina has good mechanical strength and wear resistance, and can also effectively improve the cycle life and reliability of lithium batteries; The performance and safety of lithium battery can be effectively improved by coating ceramic edge in the manufacturing process of lithium battery positive electrode.

First, the role of lithium battery positive electrode coated ceramic edge

1. Improve battery performance stability: Ceramic edge can enhance the structural stability of the positive electrode material, so that it can withstand higher voltage and current, and improve the cycle life of the battery. In addition, the ceramic edge can also reduce the interaction between the cathode material and the electrolyte, avoid the loss of the electrolyte and the damage of the electrode surface, in order to improve the performance stability of the battery.

2. Improve battery energy density: Ceramic edge can increase the charge conduction capacity of the positive electrode material, reduce the internal resistance of the electrode, and improve the energy density of the battery. The ceramic edge can increase the specific surface area of the electrode, increase the reaction contact area of electrons and ions, promote the electrochemical reaction, and improve the energy density of the battery.

3. Improve battery safety: Ceramic edge has high thermal stability and corrosion resistance, which can effectively prevent the degradation and dissolution of the battery cathode material and reduce the risk of thermal runaway and combustion of the battery. Ceramic edge can also reduce the self-discharge rate of the battery, extend the life of the battery, and improve the safety performance of the battery.

Second, common problems such as crossing and other reasons and solutions are as follows:

1. Improper operation of the coater: Improper operation of the coater may lead to uneven coating or defects, resulting in the appearance of lines.

The solution is to strengthen the operation training and maintenance of the coater to ensure the normal operation of the coater.

2. Improper coating temperature: Too high or too low coating temperature may lead to uneven coating or defects.

The solution is to adjust the coating temperature to a suitable range.

3. Coating speed: coating speed is too fast or too slow may lead to uneven coating or defects.

The solution is to adjust the coating speed to a suitable range.

4. Coating thickness parameter setting related: coating thickness is too thin or too thick can make the coating uneven or defective.

The solution is to adjust the coating thickness to the appropriate range.

5. Coating material quality problems: coating material quality problems may lead to uneven coating or defects, resulting in the appearance of lines.

The solution is to choose reliable quality coating solution suppliers and manufacturers.

Third. Summary

The above talks about the role of positive electrode coating AT9 ceramic edge and problem solving measures, there are many problems in the lithium battery coating process, there are many reasons, the solution of the problem also needs to be adjusted and improved according to the specific situation.