Due to the limitations of equipment and process, simply to prelithium and high cost transformation is not the preferred choice of battery factory, if you can use the battery factory familiar with the way to complete prelithium, the PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC promotion will be greatly enhanced. The following three - layer electrode method, the operation of the battery factory is simpler.
The core of the three-layer electrode method is the treatment of copper foil, compared with normal copper foil, the three-layer electrode method of copper foil is coated with the late formation of the required LITHIUM metal powder, by PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC iron removal, in order to protect lithium powder and air reaction, and coated with a protective layer; The negative electrode is applied directly to the protective coating. When the cell is finished filling the liquid, the protective layer will dissolve in the electrolyte, so that the lithium metal contact with the negative electrode, the lithium ion consumed in the formation of SEI film is replaced by lithium metal powder.
This method has no harsh requirements on the processing conditions of battery factory, but the stability of the protective layer in the electrode rewinding, rolling, cutting and other stations is a great challenge for the development of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC electrode materials. It is difficult to guarantee the bond of cathode material after lithium metal powder disappears.
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