Because it is difficult to use the negative electrode sheet alone to form lithium supplement, the method of directly spraying lithium powder on the negative electrode sheet has been proposed. Firstly, PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC is used to produce a stable lithium metal powder particles. The inner layer of the particles is lithium metal, and the outer layer is a protective layer with good lithium ion conductivity and electron conductivity.
In the process of prelithium, the PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC iron removal lithium powder is first dispersed in an organic solvent, and then the dispersion is sprayed on the negative electrode sheet, and then the residual organic solvent on the negative electrode sheet is dried, so as to complete the prelithium negative electrode sheet. Subsequent assembly work is consistent with the normal process.
During formation, PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC powder sprayed on the negative electrode will consume the formation of SEI film, so as to maximize the retention of lithium ions removed from the positive electrode, improve the capacity of the whole battery. Comparing the efficiency of negative silicon alloy and positive lithium cobalt acid battery, it can be seen that the efficiency has been improved significantly for the first time after the negative electrode is prelixified.
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