Sinolyte® TDT ‘s sulfate group can reduce itself by accepting electrons from the surface of the anode during charging, or it can react with the previously reduced polar solvent molecules to form a polymer film on the surface of the anode, which prevents the electrolyte from being under high pressure. The SEI film on the surface of the positive and negative electrodes has high stability and high conductivity. As a new electrolyte additive, it can make the battery have excellent storage stability, can improve the high and low temperature performance of the electrolyte, and can prevent PC molecules from intercalating into the graphite electrode, which can inhibit the decrease of the battery’s initial capacity, increase the initial discharge capacity, and reduce the high temperature The battery swells after being placed, which improves the discharge performance and cycle times of the battery.