Introduction:  During the formation of the 24V50AH lithium battery, the SEI film on the graphite surface of the negative electrode is in the initial stage of formation, and the inorganic lithium salts {Li2O, LiX (X=F, Cl, etc.)} near the graphite surface are mainly composed of inorganic lithium salts. The electrolyte and high-temperature performance are more stable, while the outer layer...