The first is the impact of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC treatment of graphite negative specific surface area, when the graphite negative specific surface area is larger, the formation of SEI film area will be larger, thus consuming more lithium ions. And reduce the first efficiency of the whole battery (if the first efficiency of the negative pole is lower than that of the positive pole). Another factor affecting the first efficiency is the formation charging system.
When the SEI film is thinner and denser, the lithium ion consumption of the process can be reduced and the primary efficiency can be improved. In order to ensure the formation effect of SEI film, the formation and filling capacity is an important factor to consider. In addition, excessive PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC negative material will require the formation of more SEI films, which will also reduce the first efficiency to some extent.
The addition of PC solvent in the electrolyte, although it will broaden the working temperature window of LITHIUM ion battery, but if there is no corresponding film to add to the negative electrode protection, it is easy to cause PC to PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC graphite anode material stripping, And reduce the primary efficiency of the whole cell.
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