What factors determine the safety of lithium battery cathode materials?

What determines the safety of lithium battery cathode materials? ◆Cell Energy Density Each lithium battery cathode material has its theoretical energy density. When a cathode material is selected, the upper limit of the cell energy density is selected. The amount design of the positive electrode material and the tap density in the production process also have an impact on the energy density of the finished battery cell. ◆The types of cathode materials with different cell power densities determine the general range of lithium battery charge and discharge power. Some details of the material, as an auxiliary factor, will also affect the power characteristics. For example, the stability of the crystal structure of the cathode material, particle size, doping atoms, carbon coating process, material preparation method, etc. The above factors ultimately affect the power density of lithium batteries by affecting the ability of the cathode material to accommodate lithium ions and the patency of the deintercalation and insertion channels. ◆The cycle life of the battery cell has many factors that affect the cycle life of the lithium battery. Related to the positive electrode material, the important thing is the loss of the active material of the positive electrode material in the cycle, and the collapse of the material structure during the charging and discharging process. The positive electrode contains lithium ions. Attenuation of capacity. The impurity components in the cathode material, such as elemental iron and trivalent iron, will interact with the electrolyte, causing adverse side reactions or causing internal micro short circuits. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How to assemble lithium iron phosphate batteries for electric vehicles?