What are the influencing factors of the internal resistance of lithium batteries?

Factors affecting the internal resistance of lithium batteries From the above process, the factors affecting the internal resistance of the battery can be deduced. The external factor temperature and ambient temperature are important influencing factors of various resistances. In the case of lithium batteries, temperature affects the activity of electrochemical materials and directly determines the speed of electrochemical reactions and the speed of ion movement. Current or load demand, on the one hand, the magnitude of the current is directly related to the internal polarization resistance. The general trend is that the greater the current, the greater the internal polarization resistance. On the other hand, the thermal effect of current has an impact on the activity of electrochemical materials. The battery's own factors determine the degree of difficulty of the positive electrode material, negative electrode material, and lithium ion insertion and extraction, which determine the internal resistance of the material, which is part of the concentration polarization resistance. In the electrolyte, the movement rate of lithium ions in the electrolyte is affected by the conductivity of the electrolyte and is an important part of the electrochemical polarization resistance. The diaphragm, the diaphragm's own resistance, directly constitutes a part of the ohmic internal resistance, and at the same time it hinders the movement rate of lithium ions, and forms a part of the electrochemical polarization resistance. Current collector resistance, component connection resistance, is an important part of the battery's ohmic internal resistance. The level of craftsmanship, the production process of the pole piece, whether the coating is uniform, and the compaction density, the level of craftsmanship in the production process of these batteries will also have a direct impact on the polarization internal resistance. 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 article: What are the advantages of lithium batteries? What kind of applications does it have?