What are the factors that affect the internal resistance of lithium batteries?

What factors affect the internal resistance of lithium batteries? 1. The influence of lithium battery manufacturing process on internal resistance 1) Too little conductive agent for positive electrode ingredients (the conductivity between materials is not good, because the conductivity of lithium cobalt itself is very poor) 2) Too much binder for positive electrode ingredients (Binders are generally polymer materials with strong insulating properties) 3) Too much binder in the negative electrode ingredients (binders are generally polymer materials with strong insulating properties) 4) The ingredients are unevenly dispersed 5) Ingredients When the binder solvent is not complete 6) The surface density of the coating drawing is too large 7) The compaction density is too large, and the roll is too solid 8) The positive electrode lug is not welded firmly, and there is a virtual welding 9) The battery storage environment is unreasonable 2. Lithium 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 ohmic internal resistance of lithium batteries. The level of craftsmanship, how the pole piece is made, whether the paint is average, and what the compaction density is. The level of craftsmanship in the production process of these batteries will also have a direct impact on the internal resistance of polarization. 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 post: What are the differences between polymer lithium batteries and liquid lithium batteries?