Self-discharge influencing factors and control points

1. Raw material metal impurities 1. The influence mechanism of metal impurities In the battery: the metal impurities undergo chemical and electrochemical corrosion reactions and dissolve into the electrolyte: M→Mn++ne-; after that, Mn+ migrates to the negative electrode and metal deposition occurs: Mn++ne-→M; With the increase of time, metal dendrites continue to grow, and finally penetrate the diaphragm, leading to micro-short circuit of the positive and negative electrodes, continuously consuming electricity, and reducing the voltage. 2. The degree of influence of different types of metal shavings (1) The addition of different types of metal shavings to the positive electrode slurry can qualitatively sort the impact levels: Cuu003eZnu003eFeu003eFe2O3 (2) The addition of different types of metal shavings to the negative electrode slurry. The influence of metal impurities in the positive electrode slurry is not as great as that in the positive electrode slurry; among them, Cu and Zn have a significant effect on self-discharge; Fe and iron oxide have no significant effects. 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: Key Control of Metal Impurities